2010 Edition Synopsis w Exec Summary - ALL SECTIONS

HSB Global Standards – Code Services

Technical Service Bulletin

2010 Edition ASME Boiler & Pressure Vessel Code

Synopsis

All ASME B&PV Code Sections

Codes and Standards Group

November 2010

HSB Code Services ASME Boiler and Pressure Vessel Code

2010 Edition Synopsis – Executive Summary

2010 ASME Code Edition Synopsis The 2010 Edition of the ASME Boiler and Pressure Vessel Code was published on July 1, 2010, and includes revisions, additions and errata approved in 2009/2010 by the ASME B&PV Standards Committee. The mandatory implementation date for the 2010 Edition is six months from the date of publication, or January 1, 2011. As always, the 2010 Edition may be optionally implemented upon receipt. Nearly 500 changes are itemized in this Synopsis. Many of these changes are the result of new technology and/or at the request of Certificate Holders like you. This Synopsis also includes a selection of Code Cases that have been newly approved or revised between May 2009 and February 2010. Many of the Cases listed in our Synopsis have not yet been published in hard copy by ASME but are scheduled to be published in an upcoming Supplement, or can be obtained from ASME prior to publication. Please contact the Home Office Staff for further assistance. This Synopsis was prepared by the HSB Global Standards Code & Standards Staff to provide insights into the intent of these changes, and their potential impact on Code users. Each item that passed the ASME B&PV Standards Committee for the 2010 Edition was entered into the database, the Synopsis “Subject” and “Description” were created by HSB CT personnel involved with the cognizant Code Section Standards Committee, and each entry was verified that it made it into publication. Commentary on revisions represents HSB CT's opinion of the changes, and is not intended to be an official interpretation of the ASME Code. Every effort was made to accurately describe the addenda changes. However, we caution Code users to always refer to the actual Code rules that apply and to use this document as a supplementary tool to the Code. Please contact HSB CT’s Codes & Standards Group if further background information is desired on any of the revisions or Code Cases published. The following Executive Summary highlights the more noteworthy revisions. We hope you find this information helpful. If you need further clarification, please contact your Inspector, Supervisor, or the Codes & Standards Staff. Thomas P. Pastor, P.E. Vice President, Codes & Standards HSB Global Standards

Any questions or comments on this document may be directed to:

Thomas P. Pastor 860-722-5615 [email protected] (all non-nuclear Sections) Jay Cameron 860-722-5653 [email protected] (all non-nuclear Sections) Bob Wielgoszinski 860-755-5064 [email protected] (Sections I & IV) Alex Garbolevsky 860-722-5098 [email protected] (Sections III, V) Wil LaRochelle 860-722-5662 [email protected] (Section III) Sandy Babka 860-722-5197 [email protected] (Sections VIII & X) Nino Olivares 860-722-5661 [email protected] (Sections VIII, IX & XII) Paul Fisher 630-955-5660 [email protected] (Section XI) Jay Vattappilly 860-722-5392 [email protected] (Sections I & VIII)



TABLE OF CONTENTS

EXECUTIVE SUMMARY .................................................................................E-1 through E-17

GENERAL CODE REVISIONS .............................................................................................. E-1

SECTION I – POWER BOILERS .................................................................................................1

SECTION II – MATERIALS ........................................................................................................8

SECTION III, DIVISION 1 – RULES FOR CONSTRUCTION OF NUCLEAR FACILITY COMPONENTS (including Subsection NCA – General Requirements for Divisions 1 and 2) .....................17

SECTION III, DIVISION 2 – CODE FOR CONCRETE REACTOR VESSELS AND CONTAINMENTS ...............................................................................................................26

SECTION III, DIVISION 3 – CONTAINMENT SYSTEMS FOR STORAGE AND TRANSPORT PACKAGINGS OF SPENT NUCLEAR FUEL AND HIGH LEVEL RADIOACTIVE MATERIAL AND WASTE .......................................................................27

SECTION IV – HEATING BOILERS ........................................................................................30

SECTION V – NONDESTRUCTIVE EXAMINATION ...........................................................34

SECTION VIII, DIVISION 1– PRESSURE VESSELS ............................................................37

SECTION VIII, DIVISION 2 – PRESSURE VESSELS - ALTERNATIVE RULES ..............50

SECTION VIII, DIVISION 3 – ALT. RULES FOR HIGH PRESSURE VESSELS ...............61

SECTION IX – WELDING AND BRAZING QUALIFICATIONS ..........................................68

SECTION X – FIBER-REINFORCED PLASTIC PRESSURE VESSELS ...............................77

SECTION XI – RULES FOR INSERVICE INSPECTION OF NUCLEAR POWER PLANT COMPONENTS ......................................................................................................79 SECTION XII – RULES FOR CONSTRUCTION AND CONTINUED SERVICE OF TRANSPORT TANKS ...........................................................................................................84



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General Code Revisions 2010 Edition 2010 Edition changes are noted with a “(10)” in the margin of the Code Book. List of Sections The second paragraph below “Interpretations ” was revised to state that Interpretations are now posted in January and July on the ASME website. The sentence describing annual distribution in July with the issuance of the Code edition and subsequent Addenda has been removed. Foreword In the 9th paragraph, the last sentence was revised by removing the words “annually in Addenda to the Code” and replacing them with “in updates to the Code”. The next Addenda for the Boiler and Pressure Vessel Code Sections will be issued in July 2011. The Addenda will “look” like a new Edition as it will be printed in a white-paged book format. The 2011 Addenda will also be the last one published. In 2013 the next new Edition of the Code will be issued. Subsequent Code Editions will be published every two (2) years thereafter without intervening Addenda. Statement of Policy on the Use of Code Symbols and Code Authorization in Advertising (1) Added 3rd paragraph, new last sentence: “An ASME corporate logo shall not be used by any organization other than ASME.” (2) Deleted previous 5th paragraph: “The ASME logo, which is the cloverleaf with the letters ASME within, shall not be used by any organization other than ASME.” Code Revisions by Sections Section I UT in lieu of RT With the incorporation of Case 2235-7, PW-11 and Table PW-11 were revised to allow either radiographic or ultrasonic testing methods unless Table PW-11 restricts the volumetric examination to one method. Several paragraphs are also revised throughout the book to change reference from radiographic examination to volumetric examination. The new Mandatory Appendix (VII) adopted by Section V Article 4 specifically to cover the techniques for “workmanship-based acceptance criteria” is also referenced in PW-52.1 with the existing acceptance/rejection standards specified in Section I being retained.



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MTR for Pressure Parts Section I never clearly addressed the subject of material test reports (MTR) for pressure parts. The Code changes (PG-5.1 & A-302.4) along with the Intent Interpretation (I-10-04) clarifies that Material Test Reports for pressure parts are required to be obtained when so stated in the individual material specifications in Section II.

Cold Forming of CSEF Steels A new paragraph PG-20 has been introduced to Section I establishing rules on post-forming heat treatment of creep strength enhanced ferritic (CSEF) steels if certain cold-forming strain limits are exceeded. Grade 91 and 92 are included in this action.

Carbon Steel Materials and Table PG-26 The previous Note 3 of Table PG-26, read “Carbon steel pipes and tubes are exempt from the requirements of PG-26 and Table PG-26.” This potentially misled some Code users to conclude that longitudinal welds in other carbon steel product forms required application of weld strength reduction factors (WSRFs), even though none were provided in Table PG-26. Note 3 is now revised to make it consistent with the original intent of exempting all carbon steel materials from weld strength reduction factors.

Section II, Parts A, B & C Twelve (12) SA-, sixteen (16) SB-, and three (3) SFA-specifications were updated. Section II, Part A On page xxxvi, as has been the practice for a few years, ASME is providing notification of pending specification removals. The 2010 Edition is listing SA-557 and SA-731 as candidates for removal since they were discontinued by ASTM in 1995. If a Manufacturer still has a current need for these material specifications, they should contact HSB CT and ASME as soon as possible. Five (5) new base materials were added: Ti alloy R56323, Grade 28 for Section VIII, Division 1 (Code Case 2425-2); SA-213-310HCbN/S31042 for Section I (Code Case 2115); SA-299 Grades A and B for Sections I, VIII, Division 1 and XII (Code Case 2364); UNS S17400 for Section VIII, Division 2 (Code Case 2277); and S32550 for Section VIII, Division 2 (Code Case 2068-3). Section II, Part D Table 5B The following materials’ allowable stress lines for Section VIII, Division 2 were revised as noted: - SB-171-C71500: For 500-700°F, increased up to 1.7 ksi.

- Titanium alloys R50400, R52400, R52402 and R53400: REDUCED by up to a maximum of 66%.



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Subpart 3 External Pressure Chart NFN-9 was extended to 1650°F (900°C) for Alloy 800H (UNS N08810). Section III “Accreditation” vs. “Authorization” A change in terminology has taken place throughout Section III eliminating the term “Accreditation” in reference to ASME Certificates. All ASME N-Type Certificates will now be issued as “Authorizations” (with or without stamps) with the exception of the new Quality Assurance Program Certificate which replaces the current Certificate of Accreditation (Corporate). ASME began issuing the new certificates in August 2010 after the Code was published. Table NCA-7200-1 - Incorporation of NQA-1 2008, 2009(a) Addenda Table NCA-7000-2 was revised to adopt the ASME NQA-1 2008, 2009(a) addenda. This change does not appear to make significant changes to the current requirements; however, the 2008 Edition of NQA-1 has been reformatted to incorporate all of the previous Supplements into the body of the Requirements. One area that should be looked at for possible revision to QA Programs is the Design Software Verification in Requirement 3, Paragraph 800. NCA-3900 - Addition of Polyethylene Piping Requirement Section III incorporated Code Case N-755 into NCA-3900 which provides the rules for the qualification of nonmetallic manufacturers, constituent suppliers and material organizations (MOs) in the supply chain for polyethylene source material and piping material. Previously, the Committee on Nuclear Certification ruled that fabricators welding polyethylene piping could be accredited under the current rules of NCA. THIS IS A SIGNIFICANT CHANGE IN THE CURRENT RULES FOR MATERIAL ORGANIZATIONS. Section IV Aluminum Boiler Revisions When Part HA was developed for Section IV for Cast Aluminum Boilers, it was the intent to mirror many of the cast iron boiler requirements or include “cast aluminum” where “cast iron” was referenced in such places as nameplate, marking, data reports, etc. These changes were accidentally omitted when aluminum boilers were incorporated. Several items were opened to make these changes where needed. In most cases it was just an addition of “cast aluminum” to the existing text but several areas were revised in order to separate cast iron and cast aluminum from the previously worded “cast boilers”. Affected text includes HG-100(a), HG-530, HG-540.2, HG-540.4, HG-540.5 and Nonmandatory Appendix K.



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New Mandatory Appendix 7 This major revision updates the rules governing mass production of Section IV boilers, water heaters, and storage tanks specified in HG-515.4(b) and HLW-600.3(d) respectively. It is recognized that in a high-volume manufacturing environment it is impracticable for the Authorized Inspector (AI) to fulfill each of his/her required duties. In these situations, and under the purview of ASME, the Manufacturer then takes on some of the inspection responsibilities that would normally be carried out by the AI. The previous rules for multiple duplicate construction in HG-515.4(b) and HLW-600.3(d) were very thin on detail, and over the years several Interpretations were published to clarify the intent of these rules. The primary goal of this revision was to bring into Section IV those clarifications and also to expand the level of detail on how to address mass production of boilers, water heaters, and/or storage tanks. These expanded rules are found in a new Mandatory Appendix 7. Below is a summary of the major changes and clarifications:

1. The term "multiple duplicate vessels" was replaced by "mass produced vessels". This simple change eliminates much of the confusion concerning when the rules of HG-515.4(b) and HLW-600.3(d) are applicable, since some people thought that the construction of two or more duplicate or identical vessels qualified for HG-515.4(b) and HLW-600.3(d) construction. The intent of the Code is that the rules of HG-515.4(b) and HLW-600.3(d) only apply in a construction environment where the volume or pace of fabrication is so large that it is impracticable for the AI to perform all of his or her required duties.

2. Boilers and HLW-stamped vessels constructed under the provisions of HG-515.4(b) and HLW-600.3(d) shall be identical, except for differences in fitting sizes and locations, shell lengths, and the location and configuration of non-pressure attachments.

3. There is no size limitation on mass-produced items.

4. The most significant clarification concerns the amount of inspection time required

by the Authorized Inspection Agency (AIA) during mass production. A minimum of one full-time (40 hours per week) Inspector shall be present during mass production operations. For production less than 40 hours per week, the AI shall be present at all times. When mass production during multiple shifts takes place, the required AI presence beyond the full-time requirement shall be a matter of agreement between the AIA of Record and the Manufacturer. THESE REVISIONS SHOULD BE CAREFULLY REVIEWED BY HG-515.4(b) and HLW-600.3(d) MANUFACTURERS AND THEIR AUTHORIZED INSPECTION AGENCIES.

5. Appendix 7 now contains a list of responsibilities for both the AI as well as the Manufacturer, as provided in his Inspection and Quality Control Procedure.



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6. The inspection and quality control procedures governing mass produced vessels and any revisions thereto shall be accepted by the AIA, legal jurisdiction, and ASME Designee.

Section V T-434.1.7 and T-434.3. The requirements for piping weld calibration block curvature and thickness tolerances, where none were previously provided for, were revised to more closely align with those for non-piping (vessel) weld calibration blocks. An aligning Code Case 2638 - "Alternative Piping Calibration Blocks" - was also adopted for implementation. Article 4, Mandatory Appendix Fig. III-434.2.1(a) On thin material, or thick material broken down into multiple examination zones, the indication from one reflector may affect indication of another if all of the holes are machined on the same face (side) of the calibration block. Article 4, Mandatory Appendix III, Figure III-434.2.1(a) - General Note (c) was revised to allow side drilled holes to be machined on opposite faces (sides) of the block when the indication from one hole affects the indication from another. Article 4 Mandatory Appendices VII and VIII Mandatory Appendix VII for workmanship-based acceptance criteria and Mandatory Appendix VIII for fracture mechanics-based acceptance criteria for ultrasonic examination (UT) procedural requirements when UT is allowed in lieu of radiography were adopted. Workmanship-based acceptance criteria are standards for acceptance of a weld based on the characterization of imperfections by type (i.e - crack, incomplete fusion, incomplete penetration or inclusion) and size (i.e.- length). Fracture mechanics-based acceptance criteria are standards for acceptance of a weld based on the characterization of imperfections by location (i.e - surface or subsurface) and size (i.e. - length or through wall height). Article 4 Mandatory Appendix IX Widespread, successful usage of Code Case 2235 to permit ultrasonic examination in lieu of radiography resulted in its incorporation into Section I and Section VIII, Divisions 1 and 2. The ultrasonic procedure qualification requirements of Code Case 2235 have been added to Section V Article 4 as new Mandatory Appendix IX.

T-675.3, T-676.1 & Table T-662 Liquid Penetrant Interpretation Times Previous Code wording could have been interpreted as establishing total minimum liquid penetrant development time of 20 min rather than 10 min, (the 10 min from T-675.3 and the table plus the 10 min from T-676.1). T-676.1 was revised to clearly indicate a 10 minute interpretation time and it was removed from Table T-662. The maximum interpretation time was clarified as 60 min. In Table T-662 the "Developer Dwell" column was deleted.



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Article 7 and Added Mandatory Appendix IV Changes were made to Article 7 to implement "blue light" examinations. "Fluorescent excitation" was added as a term to include methods other than “black light” (ultraviolet). Mandatory Appendix IV was added to Article 7 for allowing an alternate method of obtaining fluorescent magnetic particle indications using methods other than "black light". Section VIII, Division 1 UG-19(a)(2) - Mean Metal Temperature Design- Section VIII, Division 1 permits the design of common elements of vessels made up of two or more chambers to be based on differential pressure acting on the common element, as well as an mean wall temperature. Detailed rules addressing differential pressure design as well as mean metal temperature design were added to the Code in the 2006 Addenda. The version of paragraph UG-19(a)(2) addressing mean metal temperature design resulted from some final “wordsmithing” that took place during the balloting of this item. Upon later review of this paragraph, as well as the Intent interpretation that was published, it was determined that the previous words could use some clarity. In UG-19(a)(2) it previously stated: “When mean metal temperature design is used, the maximum design temperature of one of its adjacent chambers shall not exceed the maximum common element design temperature determined in accordance with UG-20(a).” This is wrong, because it suggests that the mean wall temperature of the common element can never be less than the maximum design temperature of one of the chambers. The only way this could be true is if the maximum design temperature of both chambers is identical. The paragraph was revised to read: “When mean metal temperature design is used, the maximum common element design temperature determined in accordance with UG-20(a) may be less than the greater of the maximum design temperatures of its adjacent chambers; however, it shall not be less than the lower of the maximum design temperatures of its adjacent chambers.” Interpretation: Vlll-1-04-68 Subject: Section VIII, Division 1 (2001 Edition, 2003 Addenda); Appendix 23 Date Issued: July 26, 2005 Question (1): A shell-and-tube heat exchanger utilizes tubes that fall under the scope and other provisions of Appendix 23 of Section VIII, Division 1. As permitted by UG-20(a), the tubes in the heat exchanger are designed based on the maximum mean metal temperature (taken through the tube wall at any point in the bundle and not along the tube length) that is expected under operating conditions. Is it the intent of the Code that the Appendix 23 rules can be applied if the heat exchanger is operated such that the tube design temperature so determined is within the maximum limits of the Appendix, but is less than the greater of the design temperatures of the shell side and tube side?



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• Tubes – SB-359 Mean wall design temperature = 145°F, based on heat transfer calculations

• Therefore, Appendix 23 may be used to establish maximum allowable external working pressure

Reply (1): Yes, provided either the shell side or tube side maximum design temperature does not exceed the tube design temperature. Question (2): If the reply to Question (1) is yes, shall the tube design temperature as described above be shown separately on the Manufacturer's Data Report and vessel nameplate? Reply (2): Yes. UG-19(a)(3) Example Here is an example of a U-tube heat exchanger whereby heat transfer takes place between the shell side and tube side fluids. The shell side fluid enters the heat exchanger at 300°F and exits at 240°F. The tube side fluid enters at 90°F and exits at 120°F. If one were designing this heat exchanger based on the maximum design temperatures from either chamber, then the tubes would be designed based on a maximum temperature of 300°F. However UG-20(a) permits the design temperature to be based on mean metal temperature (through the thickness) expected under operating conditions. The mean metal temperature shall be determined by computation or by measurement from equipment in service under equivalent operating conditions. Note: Nonmandatory Appendix C provides guidance on obtaining the operating temperature of vessel walls in service. If the designer of this heat exchanger wishes, he can reduce the maximum design temperature for the common elements (tubes and tubesheet) based on a mean wall temperature calculated from a heat transfer analysis, or perhaps based on previous operational experience. Depending upon the fluid flow in each of the chambers, it is possible that the mean wall temperature of the tubes would be significantly less than the actual temperature on the shell side of 300°F. In this example the SB-359 tubes can be designed for 145°F. One reason he may want to take advantage of a mean wall design temperature, would be to make use of Appendix 23 which provides an alternative



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ta

tb1, tb2

procedure for establishing the maximum allowable external working pressure for heat exchanger tubes. Appendix 23 rules are based on an actual external proof test, and often result in a much higher external pressure rating than one would achieve by direct calculations per UG-28. However Appendix 23 limits copper tubes to a maximum design temperature of 150°F. So unless one takes advantage of establishing the actual mean wall temperature in operation for this heat exchanger, the designer would not be able to make use of Appendix 23 rules. UG-45 Nozzle Neck Sizing Rules Paragraph UG-45 is often considered one of the more difficult code paragraphs to understand. UG-45 establishes the minimum required thickness for nozzle necks and inspection openings, and what often challenges code users is the fact that the thickness of a nozzle neck is not only a function of pressure and other loads acting on it, but also consideration of the thickness of the shell or head into which the nozzle is installed, as well as the minimum thickness of standard wall pipe. Paragraph UG-45 has been presented in a couple of different formats over the years, but in the 2007 Edition of Section VIII, Division 2 the nozzle neck sizing rules were presented in a simpler form making use of mathematical min/max expressions instead of excessive text. UG-45 Example: P = 500 psi T = 200F Material Shell SA-516-70 S = 20 ksi Shell OD = 60 in Shell Nominal Thickness = 0.875 in Nozzle SA-106 B S = 17.1 ksi Nozzle NPS 8 No Corrosion Allowance ta = 500 (8.625/2)/(17,100 + 0.4(500)) = 0.125 in. Nozzle tb1 = 500(29.125)/(20000-0.6(500)) = .739 in Shell tb2 = 0.0 tb3 = 0.282 in Min thickness of standard wall pipe tb = min[tb3 , max(tb1 , tb2 )] = min [0.282, max (0.739, 0.0)] = 0.282 in tUG-45= max ( ta, tb) = max (0.125, 0.282) = 0.282 in If using pipe, nom. Thickness > 0.282 / 0.875 = 0.322 in Select Schedule 40

ta = nozzle required thickness tb1 = shell/head required thickness for internal pressure tb2 = shell/head required thickness for external pressure tb3 = min wall thickness of pipe from Table UG-45



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UW-2(c) – Use of Electric Resistance Welded (ERW) Pipe as the Shell in an Unfired Steam Boiler If a Manufacturer wishes to use ERW pipe as the shell of an unfired steam boiler under the rules of Section VIII, Division 1 UW-2(c), there are no prohibitions against such use. However, a reasonably strong case can be made against such use by carefully assembling selected Interpretations, on the basis of the ERW weld seam being classified as a Category A weld joint, and the premise that radiography of ERW weld seams is not acceptable. After much debate, it was decided to align Section VIII rules for use of ERW pipe in an unfired steam boiler with the limitations specified in Section I, PG-9.5. This revision removes an inconsistency that has existed between Section I and Section VIII when a Section VIII vessel is used on a Section I (“E” stamped) electric boiler. Prior to this revision, a Section VIII Manufacturer could not use ERW pipe for the shell of a Section I electric boiler, even though it would be permitted under Section I rules. Revised UW-2(c) Paragraph

(c) Unfired steam boilers with design pressures exceeding 50 psi (343 kPa) shall satisfy all of the following requirements:

(1) All joints of Category A (see UW- 3) shall be in accordance with Type No. (1) of Table UW-12, and all joints in Category B shall be in accordance with Type No. (1) or No. (2) of Table UW-12.

(2) All butt welded joints shall be fully radiographed except under the provisions of UW-11(a)(4) and except for ERW pipe weld seams. When using ERW pipe as the shell of an unfired steam boiler, its thickness shall not exceed ½ inch (13 mm), its diameter shall not exceed 24 inches (DN 600), and the ERW weld shall be completed using high frequency (HFI) welding.

(3) When fabricated of carbon or low alloy steel, such vessels shall be postweld heat treated.

(4) See also U-1(g), UG-16(b), and UG-125(b) for additional requirements.

UHA-44(d), UNF-79 – Postfabrication Heat Treatment Due to Straining In this revision post fabrication heat treatment is now mandatory for cold formed swages, flares and upsets in pipe and tube for the alloys and design temperatures listed in Table UHA-44 and Table UNF-79. The equations to estimate the strain for pipe swages, flares and upsets have been deleted. Similar changes were made to the rules in Part 6 of Section VIII, Division 2. The following is background material behind this rule change.

Background1- In the metallurgical context, cold forming is the language used for forming below the recrystallization temperature. In the context of austenitic materials, it generally means forming at temperatures below about 1000°F (540°C).



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Prior to the adoption of the PG-19 rules for cold formed austenitic material in 1998, there were two competing approaches. The first approach was to require forming trials on representative heats of material from the lots being used for fabrication and to base the decision on whether to perform post-forming heat treatment on an increase in hardness. An increase of 10 points on the Rockwell B scale, or an as-formed hardness in excess of 95 Rockwell B, were considered as appropriate criteria. The second approach was to use simple equations to estimate the forming strains and require post-forming heat treatment when the calculated strains exceeded certain critical values for simple tube or pipe bends, cylinders formed from plate, or spherical or dished heads (15 or 20% at design temperatures below 1250°F (650°C) or 10% at higher design temperatures -see Table PG-19). For swages, flares, and upsets, the strain limits were arbitrarily set at one-half those for the “simply calculated” configurations previously enumerated, with the belief that this was sufficiently conservative. The second approach was ultimately the one adopted for PG-19 because of the appeal of determining the need for heat treatment based on calculation without the need for forming trials on production material. In estimating forming strains, swages, flares, and upsets represent a particular challenge because there are strains in multiple directions and the sequence of forming and equipment applied actually determines the strain history at each point in the formed fitting. Thus, objects having the same initial and final shape might, in truth, follow different strain histories and have different degrees of cold work. Nevertheless, the equations to estimate strains were adopted based on “before” and “after” dimensions using the assumption of constant volume commonly applied for plastic deformation. The limit of one-half strain versus simply bent configurations was thought to compensate for these simplifications. A recent failure after only 100 hours in service has occurred in a cold worked swage for a superheater made with SA-213 TP321H austenitic stainless steel tubing. One swage severed completely and many suffered extensive cracking. While not heat treated after forming, the swage apparently does modestly violate the strain limits established in PG-19 that should have triggered heat treatment, but the amount of the violation wasn’t “horrendous” and the question arises as to whether a similar swage which “just meets” the PG-19 rules might fail similarly. In recent memory, a similar failure occurred in three days in a swage of TP310HCbN and another example has been cited for short time failure in a TP347H swage that received inadequate solution treatment temperature. The experience stated by the four major US boiler companies and two major offshore boiler companies who participated in the meeting of the Subgroup on Materials (SC I) on December 15, 2004 was that their practice predating the PG-19 rules was to perform post-forming heat treatments on all swages, flares, and upsets, and that mostly they had continued to do so regardless of the potential relief offered in PG-19. The one exception was the recent failure after 100 hours previously cited by an offshore boiler company in which the intent was to follow PG-19, albeit it appears it wasn’t followed to the “letter of the law.” The affected offshore boiler company viewed this issue as an urgent matter and



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sent a representative to the Subgroup on Materials meeting on December 15, 2004 to present their perspective on a need for Code revision. Two considerations mainly support the proposed Code revision. First, it appears that making heat treatment mandatory for swages, flares, and upsets will not pose an economic hardship or be a barrier to existing industry practices. Second, the calculational approach to strain estimation does not appear to work well for these “redundantly formed” configurations and it would take substantial experimentation to establish truly safe limits. Reversion to hardness testing was considered as an alternative but was not supported by the Subgroup on Materials (SC I). 1Background material taken from ASME Section I Record 04-1670 Explanation. Appendix 2 – Bolt Spacing Correction Factor It is a well known fact that if too few bolts are used on a flange it is possible to develop secondary bending stresses in between the bolts that would lead to non-uniform compression on the gasket. Excessive bolt spacing can result in a flange that is more prone to leakage. The well-known Taylor Forge Bulletin 502 “Modern Flange Design” contained an equation to calculate maximum bolt spacing as well as an equation to adjust the design moment when the bolt spacing exceeded a certain limit. Many companies invoke these rules as part of their internal specifications, but there has always been resistance within ASME Section VIII to add these rules to Appendix 2. Many committee members argued that “if it’s not broke, don’t fix it”, meaning that the Appendix 2 flange design rules have been in the book now for over 45 years without this bolt spacing correction factor, so they fail to see the need to add it at this time. However from an engineering point of view, it is hard to ignore the presence of this additional stress on the flange and potential for leakage of the joint. With the current provision in UG-99(g), leakage is a Code issue for flanged joints, and the spacing limitation is appropriate. The compromise that was reached during the balloting of this item was that the bolt spacing and correction factor rules would be introduced into Appendix 2, but they would only become mandatory when the vessel is designated for lethal service, or when the user or his designated agent specifies the use of these rules. Case 2651 - Rules for the Design of Electric Immersion Heater Element Support Plates The current rules for reinforcement of multiple openings in flat covers used to support electric element heaters result in greater thicknesses than rules consistent with those in Part UHX. Flanged electric immersion heaters consist of tubular electric heating elements typically mounted in multiple penetrations in ASME B16.5 blind flanges. Under the current Code rules and interpretations, a flanged electric immersion heater element support plate is not considered a tubesheet but rather an unstayed flat head or cover. Therefore, the rules in Part UHX are not applicable and the cover thickness requirements are calculated using the formulas and rules in UG-34 and UG-39. For multiple penetrations, the rules in UG-39(d)(2) require the value under the square root sign in formula UG-34 (c)(2), Formula (2) to be doubled for both operating and bolting



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calculations. This causes the thickness to be unnecessarily greater than that computed using the Part UHX methodology. Typically blind flanges are used for the electric immersion heater element support plate. However it is not uncommon for a manufacturer to be forced to use the next higher class of blind flange in order to achieve the minimum thickness requirements for both operating and bolting as calculated by UG-34 and UG-39. Moreover the required thicknesses as determined by these rules are typically 20% to 30% thicker than similar calculations for heat exchanger tubesheets subjected to the same pressure and temperature. The Subgroup on Heat Transfer Equipment of Section VIII developed special rules for the design of immersion heater element support plates, based upon the rules in UHX-12 for U-tube tubesheets. These new rules will be published in a Mandatory Appendix in VIII-1 in the 2011 Addenda. An early implementation Code Case, Case 2651, has been approved for use, effective June 25, 2010. Note that some minor revisions were made to this Case, and Revision 1 (Case 2651-1) was approved for use on September 8, 2010. Section VIII, Division 3 Composite Reinforced Pressure Vessels (CRPV) Section VIII, Division 3 has adopted two Code Cases (2390 and 2579) which allowed for the use of Composite Reinforced Pressure Vessels (CRPV) in high pressure hydrogen service. Several new Articles and paragraphs have been added to address the special requirements for design, testing, marking, etc. for these types of vessels. There was one technical change during the incorporation. The prohibition of truck transport from Case 2579 was eliminated. The Committee felt that if the transport loads were properly addressed then there was no reason to prohibit these vessels from over-the-road transport. Section IX Introduction – Volumetric NDE Qualification of Welders and Welding Operators using ultrasonic examination (UT) has been added to Section IX. The third paragraph of the Introduction, "Performance Qualifications", was revised to include "volumetric NDE" of a test coupon or initial production weld to permit qualification of welders and welding operators by ultrasonic (UT) examinations on test welds in material 1/2 inch (13 mm) thick or greater in lieu of radiography or mechanical testing. This change incorporates the requirements of Code Case 2326 and is reflected in revised paragraphs in Section IX Articles I and III.



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QW-191 and QW-191.2 – Volumetric NDE QW-191 has been retitled "Volumetric NDE". Ultrasonic Examination requirements were added to QW-191.2. These changes incorporate the requirements of Code Case 2326 as explained in the “Introduction”.

Article 4 – Addition of P-No. 10H Duplex Stainless Steels Duplex (austenitic/ferritic) stainless steels solution annealed after welding were not specifically mentioned in Section IX. From a metallurgical standpoint, it would seem logical that they would be handled in the same manner as austenitic stainless steels that are solution annealed after welding, based upon the fact that the detrimental metallurgical characteristics in the heat affected zone (HAZ) would be eliminated by the solution heat treatment. As a result of an Interpretation, "P-No. 10H" materials were added to paragraphs QW-403.6, QW-406.3, QW-407.4, QW-409.1 & QW-410.9. QW-409.1 (c) - Heat Input Determination Waveform controlled power source technology (See item below on Nonmandatory Appendix H) allows infinite adjustment of the output waveform characteristics to control features such as droplet shape, penetration, wetting, and bead shape. When using these new power sources the previously existing heat input formula does not take into account waveform shape, phase shifts or other synergistic changes. Supplementary essential variable QW-409.1 was therefore revised with the addition of "(c)" to address heat input determination using instantaneous energy or power measurements.

QW/QB-422 - ISO 15608 Group Numbers A column was added to QW/QB-422 to identify the corresponding material group numbers according to ISO/TR 15608:2005 - "Welding - Guidelines for a metallic materials grouping system" and is consistent with the assignments found in ISO/TR 20173:2008 - "Grouping systems for materials — American materials". This ISO 15608 Group listing is provided as a convenience and is for information only. Section IX does not refer to the ISO 15608 groupings as a basis for establishing the range of base metals qualified for either procedure or performance qualification. NOTE: This addition does not appear in either the "Summary of Changes" or "List of Changes in Record Number Order" printed in the 2010 Edition.

QW/QB-492 – Machine Welding As a result of Interpretation IX-07-11, the following phrase was added to the definition of machine welding: "or adjusted under the welding operator's direction". A person who makes adjustments to the welding equipment settings, under the supervision and control of the welder or welding operator performing the weld, need not be a qualified welder or welding operator under QW-301.2.

QB-452.1 – Sectioning Test Specimens QB-141.1 states in part: “Sectioning tests are also a substitute for the peel test when the peel test is impractical to perform…” Although QB-452.1 stated two (2) peel tests are required, it did not clearly indicate that an equal number of sectioning tests may be substituted. The addition of references to Section(ing) test specimens in the rightmost



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column of QB-452.1 and a modification to NOTE (1) clarified these requirements and reinforced the applicability of QB-141.4.

Nonmandatory Appendix B Suggested Forms QW-484A/B (WPQR / WOPQR) The welder and welding operator performance qualification suggested forms were revised to include a block to indicate "or UT". The change was made to reflect Section IX allowance of "volumetric NDE" (either radiography (RT) or UT) of a test coupon or initial production weld to permit qualification of welders and welding operators.

New Nonmandatory Appendix H - Waveform Controlled Welding Advances in microprocessor controls and welding power source technology have resulted in the ability to develop waveforms that improve control of arc characteristics for pulsed welding. The characteristics selected by the welder or welding operator are no longer limited to amperage, voltage or wire feed speed, as in traditional welding power sources. Widespread use of waveform controlled power sources has resulted in the need to review traditional methods of measuring heat input and specifying welding variables for applicability to this new technology. Work performed by several equipment manufacturers and research organizations has shown significant error in the actual power (current, voltage) produced by a waveform controlled power source in measurements obtained using conventional DC or RMS amperage and voltage meters compared to that measured by high frequency sampling methods that account for changes in the wave shape. The error can be on the order of 20% and be in a non-conservative direction. When qualifying a new welding procedure using waveform controlled welding, the instantaneous energy or power range is used in lieu of the amperage and voltage ranges to determine the heat input per QW-409.1(c). When qualifying a new procedure using nonwaveform controlled welding, either the current (amperage) and voltage is recorded and heat input determined using the methods of QW-409.1(a) or QW-409.1(b), or the instantaneous energy or power is recorded and the heat input determined by the method in QW-409.1(c). Welding procedures previously qualified by nonwaveform controlled welding and heat input determined by QW-409.1(a) may continue to be used for waveform controlled welding provided they are amended to require heat input determination for production welds using the methods of QW-409.1(c). Welding procedures previously qualified using nonwaveform controlled welding and heat input determined by QW-401.9(b) continue to be applicable for waveform controlled welding without changes to the heat input determination method. Methods are described in Nonmandatory Appendix H to: (1) determine if the heat input of a waveform controlled production weld meets the heat input range of a welding procedure qualified with nonwaveform controlled welding with heat input determined using QW-409.1(a); and (2) determine if the heat input of a nonwaveform controlled production weld meets the heat input range of a welding procedure qualified with waveform controlled welding with heat input determined using QW-409.1(c).



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Separate performance qualifications are not required for waveform controlled welding; however, it is recognized that a welder or welding operator may require instruction on the proper use of the equipment. The extent of such instruction is left to the discretion of the Manufacturer. Section X Appendix 8 - Class III Vessel Added A Class III vessel for filament wound vessels with polar boss openings for up to 15000 psi [103.4 MPa] has been added. This addition is an incorporation of a Code Case (as Appendix 8) in order to meet the needs for the future storage of hydrogen gas for motor vehicle use. Most of these high pressure cases have been adopted by Section VIII, Div. 3 but because Division 3 does not have rules for all composite construction, it was necessary for Section X to adopt the case. With the inclusion of the new Appendix, the scope of Section X was increased to the maximum pressure of 15000 psi [103.4 MPa] There were also several paragraphs that were revised to accommodate the new vessel class (e.g. hydrostatic test pressure ratio, hold time for the hydrostatic test and the addition of acoustic emission examination for all vessels. RT-330 - Deletion of 5% Limit for Volumetric Expansion The original requirement was for the volumetric expansion of production vessels to be within 5% of the value recorded in the Qualification Test Report and the Procedure Specification. In 2007, RT-330.2 was added which deleted the lower limit for vessels with less than 120 gallons capacity. The reasoning then was that for small vessels the accuracy of the measurements was often insufficient to determine if a vessel was rejected or accepted. A lower volumetric expansion indicates the production vessel is stronger than the prototype used for qualification testing. Therefore, the deletion of the volumetric expansion lower limit does not affect the integrity of the vessel. This revision to RT-330 makes the volumetric expansion requirements the same for all production vessels. “Assembler” and “UV Stamp” Since safety relief devices for Section X vessels are required to comply with Section IV or Section VIII, Division 1, it was decided that references to "Assembler", "UV Stamp" and a Certificate of Authorization for the UV stamp were not necessary and thus were deleted. Section XI

IWA-1400(n)(2) Table IWA-1600-1 was previously changed to refer to NQA-1, 1994 Edition. With the introduction of this edition, NQA-1 was reorganized such that "Part I" contains the Basic and Supplementary Requirements. Previous references to Part II and Part III have been deleted.



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IWA-2410 IWA-2410 was revised to address Preservice Inspection (PSI), initial and successive Inservice Inspection (ISI) for a new nuclear power plant receiving a Combined Operating License (COL) under US 10CFR52 by removing the reference to US 10CFR50,Section 50.55a. This change should also benefit Owners using Section XI outside the USA.

IWA-4411(h) Reference to stress corrosion cracking (SCC) was deleted to make wording consistent with prior changes to Nonmandatory Appendix Q, and to clarify that when Appendix Q is used, all of its requirements become mandatory and the provisions of IWA-4520 and IWA-4530 do not apply. Nonmandatory Appendix Q previously only addressed weld overlays for SCC. Code Case N 504-2 and Appendix Q were determined to be appropriate for addressing defects for fatigue cracking as well as SCC.

IWB-1220 Listed components are exempt from volumetric and surface examinations. Visual examinations VT-1 and VT-3 are now exempted as well based upon IWF-1230 and intent Interpretation XI-1-86-45.

IWB/C/D/F-2430 The criteria of Code Case N-586-1 and Interpretation XI-1-98-41 have been added. Code Case N-586-1 allowed additional examinations to be limited to those welds, areas, parts or supports that are subject to the same apparent or root cause and degradation mechanism as the flaws or relevant conditions originally detected. Application of the Code Case required the performance of an engineering evaluation to determine these factors. Interpretation XI-1-98-41 stated that additional examinations may be limited to the method that originally detected the subject flaws or relevant conditions.

Nonmandatory Appendix B Nonmandatory Appendix B - "Forms" contained Forms NIS-BA "Record of Welding Operator Qualification Test for Tube Welding by Explosives" and NIS-BB "Example of Tube Examination Report" (dated 10/06). There was no reference to either Form in Section XI or that they were being used in Section XI applications; therefore, this Appendix was deleted in its entirety.

Code Case N-778 Approved Code Case N-778 for Alternative Requirements for Preparation and Submittal of Plans, Schedules, and Preservice and Inservice Inspection Summary Reports. (Applicability: Section XI 1989 Edition through the 2007 Edition with the 2009 Addenda.) was developed to eliminate the Section XI requirement that licensees submit ISI plans, schedules, and preservice and inservice inspection summary reports to the regulatory and enforcement authorities having jurisdiction at the plant site. This was essentially a regulatory requirement and intended to be removed from the Code. Owners were required by ASME to submit these documents to the regulatory and enforcement authorities, regardless of whether these authorities needed or even wanted this documentation. Should the regulatory and enforcement authorities wish to continue receiving these



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documents, these authorities should specify this in the applicable regulations governing the Owner’s plant site. In parallel to this Code Case, complementary revisions were made to IWA-1400(c) and IWA-6240. Section XII Modal Appendix 1 - Fatigue Evaluation Exemptions Current design requirements in Section XII for MC331 cargo tanks require consideration of cyclic loads due to both dynamic loads during highway transit and full pressure cycles during the tank vessel service life due to filling and emptying of lading. This revision provides some exemptions of certain MC331 cargo tanks from fatigue analysis requirements based on construction material, size and lading restrictions. These revisions will now exempt a large proportion of tank vessels in this category. New Mandatory Appendix XVI – Local Thin Areas (LTA) in Cylindrical Shells and in Spherical Segments of Shells This new Appendix is an adoption of Appendix 32 from Section VIII, Division 1. The Appendix contains rules that permit a local thin area (LTA) in a shell or head with no reduction in MAWP. LTA's in pressure vessels are small local areas in the shell or head that have a thickness less than the nominal thickness, and in some cases, less than the required thickness. The transport industry felt that a similar rule as Appendix 32 in Section VIII, Div. 1 was needed.

Synopsis of the 2010 Edition to the ASME BPV CodeHSB Code Services

Tuesday, November 1 6, 2010 Page 1

9th & 11th Paragraphs Revision Elimination of Addenda - ASME took action in late 2009 to eliminate issuance of Addenda to the Boiler and Pressure Vessel Code. These revisions to the 9th and 11th paragraphs in the Foreword eliminated any reference to Addenda to the Code, except for the paragraph contained in the "List of Sections". The final Addenda to the Boiler and Pressure Vessel Code will be published in July 2011 .

Figure PG-58.3.1(b) Revision Editorial Correction to Reference - "PG-68.1" was corrected to "PG-68.3" in Figure PG-58.3.1(b)

PG-5.1, A-302.4 Revision Requirements for material test reports for pressure parts - Except in PG-77.4 (material test reports (MTR) for plates under certain special heat treatment conditions) and in PG-105.4 (which makes reference to A-302.4 regarding the required material certifications or material test reports, although it is not stated when such certifications or reports are required ) , Section I never clearly addressed the subject of material test reports for pressure parts. This Code change along with the Intent Interpretation (I-10-04) clarifies that Material Test Reports for pressure parts are required to be obtained when so stated in the individual material specifications in Section II.

PG-5.6 Revision PG-5.6, P-No.15E, Group 1 Materials - The title to PG-5.6 was changed to "P-No. 15E, Group 1 Materials". PG-5.6 is now divided into two subparagraphs; PG-5.6.1 provides rules for components without welds, and PG-5.6.2 provides rules for components with welds. For components containing welds of matching composition, the original intent was to adopt the same temperature limits contained in Table PW-39 based on the nickel + manganese content of the weld metal. However, the previous wording of the final paragraph of PG-5.6 did not require consideration of Table PW-39 until the temperature of 1470°F (800°C) is exceeded. This action corrects that error, by changing the limiting temperature to 1425°F (775°C) as it currently exists in Table PW-39.

PG-8.2.2, PG-9.2, PG-9.1.2

Revision Corrections / Revisions to PG-8.2.2, PG-9.1.2, PG-9.2 - As PG-8.2.2 made reference to the whole title of the SA-278 specification, containing the words "temperatures up to 650°F (345°C)", Section I Certificate Holders have been puzzled by the conflicting apparent permission of the use of SA-278 up to 650°F (345°C) and the subsequent limitation to 450°F (230°C) stated towards the end of the paragraph. The title of SA-278 is deleted as part of this action to eliminate the confusion. PG-9.1.2 is revised to state "Chromium" instead of "Chrome" in the title of SB-167, SB-407, SB-423, SB-515, SB-516, and SB-517. Nickel-Chromium-Cobalt-Molybdenum Alloy is added to the title of SB-167 in PG-9.1.2 and PG-9.2 which was incorporated from Code Case 1956 in the 2003 Addenda. PG-9.2 is revised to delete N 06625 and replace it with Nickel-Chromium-Molybdenum-Columbium Alloy in the title for SB-443, SB-444, and SB-446. PG-9.2 is revised to add Nickel to the title of SB-462.

Code Book: I

Part:

Subpart/Table: Foreword

Paragraph Type Subject - Description

Subpart/Table: Part PG




PG-9.1 Revision Adoption of EN 10216-2:2002 for use in PG-9.1 - EN 10216-2:2002 ( Seamless Steel Tubes for Pressure Purposes - Part 2: Technical Delivery Conditions for Non-alloy and Alloy Steel Tubes with Specified Elevated Temperature Properties) is now added to PG-9.1. This allows Manufacturers to use the grades P235GH, P265GH, 16Mo3, 13CrMo4-5, and 10CrMo9-10 for PG-9.1 applications. Section IX has also added these grades; HOWEVER, THE PROPOSAL (Record 01-632) TO ADD THIS MATERIAL SPECIFICATION AND THE SPECIFIC GRADES TO SECTIONII PARTS A & D IS NOT YET BOARD APPROVED. THEREFORE, USE OF THIS MATERIAL FOR PRESSURE PARTS IS CURRENTLY PROHIBITED UNTIL SECTION II MAKES CONCURRENT CHANGES BY ADOPTING THESE MATERIAL GRADES.

PG-9.1 Addition Adoption of ASME SA/EN 10222-2 - SA/EN 10222-2 [Steel Forgings for Pressure Purposes-Part 2: Ferritic and Martensitic Steels with Specified Elevated Temperature Properties] has been added to PG-9.1. Allowable stress lines are added to Section II Part D to facilitate use of steel forgings of carbon steel , 1Cr-0.5Mo, 2.25Cr-1Mo, and 9Cr-1Mo-V steel made to this specification.

PG-20, Table PG-20 Addition Cold Forming of CSEF Steels Grade 91 and 92 - New paragraph PG-20 and new Table PG-20 are introduced to Section I establishing rules on post-forming heat treatment of creep strength enhanced ferritic steels (CSEF) if certain cold-forming strain limits are exceeded. Grade 91 and 92 are the materials affected by this change.

NOTE: THERE IS A TYPOGRAPHICAL ERROR IN NOTE (2) OF THE TABLE. THE REFERENCE TO "425 deg. F." SHOULD BE "1425 deg. F." THIS WILL BE CORRECTED IN THE NEXT PUBLICATION AS ERRATA.

PG-20, Table PG-20 Revision Cold Forming of CSEF Steels Grade 92 - As part of the Incorporation of Code Case 2179-7 (9Cr-2W material, K92460) to Section I, rules governing the maximum amount of cold work permitted without post-forming heat treatment havebeen introduced to Section I. The intent of these rules is to insure that the material will have the desired level of creep strength following completion of all processing.Grades 92 is added to Table PG-20 as a part of this action.

PG-27, PG-29 Addition Added References to Appendix IV - The word "Shells" was inserted into the heading of PG-27.2.2 and paragraphs PG-27.1, PG-29.1.1. and PG-29.1.11 were amended making reference to new Mandatory Appendix IV which incorporate LocalThin Areas (LTA) in Cylindrical Shells and Local Thin Areas in Segments of Heads from Code Cases 2330-1 and 2331 -1, respectively.

PG-27.4 Revision Notes of PG-27.4 - Each of the notes in PG-27.4 has been now assigned an individual corresponding subparagraph number for consistency with the ASME style guide.

PG-29 Revision Diameter of Head - The words “diameter of the shell” in PG-29.5, 29.7, 29.12 & 29.13 never indicated whether it is the inside or outside diameter of the shell although PG-29.2 seems to indicate that it is the outside diameter. The proposed revision clarifies that it is the outside diameter of the head that needs to be used inthose instances in PG-29 where it makes reference to the words” diameter of the shell”. The revised words are also consistent with the words in Section VIII Division.1, paragraph UG-32(j).



PG-38.1 Revision Revision to PG-38.1 - PG-38.1 makes reference to PG-36.2 (the limit of reinforcement measured parallel to the vessel wall ) and PG-36.3 ( the limit of reinforcement normal to the vessel wall) while establishing whether or not adjacent openings require consideration as multiple openings. Only the limit parallel to the vessel wall is relevant in this consideration, so the reference to PG-36.3 is deleted.

PG-44.2 Revision Materials for Yoke - This revision permits handhole yokes to be made of SA-278 cast iron.

PG-47.1 Revision Synchronization of Staybolts - The revision adds requirement for synchronization of staybolt threads.

PG-52.6 Revision Clarification of Pitch Dimension - The last sentence of PG-52.6 was revised to clarify that pitch is determined at the mean radius of the cylinder. This revision alsomakes it clear that physical measurement of pitch on the pressure part is not necessary and the same can be determined geometrically at the design stage.

PG-58 Errata Code Jurisdictional Limits for Piping - As a result of this errata, Boiler External Piping (BEP) is now represented with solid bold lines and the Non Boiler External Piping (NBEP) is represented with broken bold lines consistently in Figure PG-58.3.1(a), (b), (c), Figure PG-58.3.2 and Figure PG-58.3.3.

PG-67, A-356 Revision Pressure relief valve capacity requirements - A new paragraph (PG-67.2.7) is added to address the following condition. When the boiler is arranged with steam generating surface downstream of superheater section in the gas path, the steam generated (when all valves are blowing) due to the shifting of heat capacity from superheater section to the downstream components can exceed the maximum steaming capacity defined at the MAWP of the boiler. Also, the P-7 Data Report andaccompanying A-356 "Guide for Completing", lines 17 and 21, were updated to make them consistent with the new rules.

PG-69.2.3 Revision Relieving capacities for pressures more than 3200 psi - PG-69.2.3 is revised by adding rules to calculate pressure relief valve relieving capacities for pressures greater than 3200 psig (22.1 MPa). A new table (Table PG-69.2.3) is also added providing values for supercritical correction factor Ksc as a part of this action.

PG-73.4.3 Revision Capacity Certification Interval - Revised the Pressure Relief Device Certification Interval from five (5) years to six (6) years so that it better synchronizes with the ASME three (3) year QC Audit Schedule.

PG-110, A-356 Revision Supercritical Steam Service Addressed - PG-110(e)(1) and (e)(2) and A-356 Note 17 were editorially revised to includes reference to supercritical steam service in accordance with PG-69.2.3.



PG-112.2.4 Revision Form P 3-A - A new paragraph was added to make clear that Form P-3A is not to be used to document a portion of a complete boiler. It was never intended that thisform be used for anything other than a Master Data Report for a complete boiler system. Any use of the P-3A as a partial Data Report, or to document only a part of a boiler system is not permitted. This Form is typically used when an Engineering-Contractor ( "S" stamp holder) who does not have fabricating facilities, but provides design and takes overall responsibility for field assembled boilers. However, it is not uncommon for some EC's to take responsibility for only a part of an entire boiler system (e.g. design and assembly of feedwater or main steam systems only). In this case the EC should use a P-4 Partial Data Report to document this partial responsibility. IT SHOULD BE NOTED THAT THIS CHANGE WAS PRINTED AS PARAGRAPH PG-112.2.4. THIS IS AN ERROR. THE ADDED PARAGRAPH SHOULD BE MADE PART OF PG-112.2.3 AND NOT HAVE A NEW PARAGRAPH REFERENCE. SO THIS WILL BE CORRECTED IN THE NEXT PUBLICATION AS ERRATA ALONG WITH RENUMBERING THE SUBSEQUENT CLAUSES.

Table PG-19 Addition Addition of 310HCbN, UNS S31042 in Table PG-19 - Austenitic stainless steel 310HCbN, UNS S31042 is added to Table PG-19. This material was previously acceptable for Section I applications via Code Case 2115-3 which will now be annulled. Through separate actions, allowable stresses for this material are added to Section II Part.D and it is also now listed in QW/QB-422 of Section IX.

Table PG-19 Addition Table PG-19, Alloy 230 and Alloy 617 - Alloy 230 and Alloy 617 have already been adopted into Section II, Part D for Section I use but the rules for Post Cold-Forming Strain Limits and Heat-Treatment Requirements in PG-19 were not concurrently updated to include these Nickel Base Alloys. This action updates Table PG-19 to provide appropriate post cold-forming rules which are consistent with other alloys in Table PG-19.

Table PG-26 Revision Carbon Steel Materials and Table PG-26 - During the development of weld strength reduction factors (WSRF), the project team had agreed to drop carbon steel materials from Table PG-26 as a compromise in view of the successful performance history of carbon steel boilers. The previous Note 3 of Table PG-26, read “Carbon steel pipes and tubes are exempt from the requirements of PG-26 and Table PG-26.” This could potentially mislead Code users to conclude that longitudinal welds in other carbon steel product forms require application of WSRFs, even though none are currently provided in Table PG-26. This action cleans up Note 3 to make it consistent with the original intent of exempting all carbon steel materials from weld strength reduction factors. An Intent Interpretationwas also approved to be published as a part of this action but somehow missed the 2010 Edition. In addition, Note 4 is editorially corrected by changing the word "pipe" to "component",

Table PG-26 Addition Table PG-26, C-Mo & C-1/2Mo Steels - A new phrase is added to Table PG-26 Note 7 to address C -1/2Mo steels prohibiting these steels above 850 deg. F. (454 deg. C.) when containing a longitudinal seam. This basically clarifies the intent of Note 8 in 2009 Edition of Table PG-26 by means of revising that note and re-numbering it to Note 7. In addition note numbers are swapped between the old Notes 7 & 8 such that Cr-Mo steels are now correctly dealt with in Notes 8 & 9.



Various Paragraphs Errata Errata - This action corrects several typographical errors throughout the Code book. All of them are not listed here, but to name a few; (1) Corrected the spelling of "pressure" in the penultimate sentence of PG-67.1; (2) Corrected the spelling of "relief" in PG-69.1.5, (3) Corrected the spelling of "Main Steam" in Figure PG-58.3.1(a); (4) Corrected "Connection" to "Convection" in Figure PG-58.3.3. (5) (5) The title previously deleted from A-70 is now correctly inserted above A-71; (6) The previous PW-39.1 reference "Table PW-39.1" has been corrected to "Table PW-39".(7) PMB-21.1.1 - SA 234 :"Fillings" corrected to "Fittings"

PW-11 and Various Paragraphs

Revision Ultrasonic Examination for Section I Construction - This item originated from Record 05-190 which was the incorporation of Code Case 2235-7 into Section I to permit the usage of UT in lieu of RT. PW-11 AND TABLE PW-11 ARE REVISED TONOW ALLOW EITHER RADIOGRAPHIC OR ULTRASONIC TESTING METHODS UNLESS TABLE PW-11 RESTRICTS THE VOLUMETRIC EXAMINATION TO ONE SPECIFIC METHOD. Several paragraphs are also revised throughout the book, (e.g. PG-11.3.3), to change reference from radiographic examination to volumetric examination where appropriate. Definitions for "volumetric examination" and "nondestructive examination (NDE)" were added to PW-11.2 and definitions for "UT" and "RT" were deleted. The new Mandatory Appendix (VII) adopted by Section V Article 4 to specifically cover the techniques for 'workmanship based acceptance criteria' is also referenced in PW-52.1 with the existing acceptance -rejection standards specified in Section I being retained.

PW-16.7 Addition Fillet Weld Leg Size for Nozzle Attachment Welds - This action recognizes and makes it clear that for radial nozzles, if a constant fillet weld leg size is maintained around the circumference of the nozzle, the throat of the fillet weld is reduced at thecircumferential plane of the shell at the shell-to-nozzle joint. PW-16.7 (a) addresses all fillet welds of all nozzles in Fig. PW-16.1 within the size limitations of PG-32.3.2. PW-16.7 (b) addresses the cover fillet welds in Fig. PW-16.1 of those nozzles that are attached by full penetration welds and exceed the size limitations of PG-32.3.2.PW-16.7(c) lastly addresses about cover fillet welds of extra large openings approaching the shell diameter where the nozzles are attached by full penetration welds.

In all the above three situations, the fillet weld leg size (meeting the minimum throat dimensions) is to be determined at the plane passing through the longitudinal axis of the cylindrical shell. In addition, a special note is also added inPW-16.7(c) to clarify the fillet weld can transition to a complete groove weld without cover fillet while approaching the circumferential plane for extra large nozzles.

PW-28.5 Revision Welder Qualification Requirements - PW-28.5 has been a source of confusion formany years with regards to qualification of welders for work on boiler external piping and boiler proper piping. PW-28.4 clearly provides the rules regarding boilerproper piping and PG-109.1 provides rules for work on boiler external piping. The deletion of PW-28.5 eliminates any confusion over these separate requirements. The word "DELETED" is inserted in the text as a placeholder.

Subpart/Table: Part PW




PW-39.8, Table PW-39 Revision Capacitor Discharge Welding - This action eliminates any possible confusion that may arise regarding the text of PW-39.8 and the notes of Table PW-39 in termsof which one takes precedence. The Notes (where applicable) of Table PW-39 addressing capacitor discharge welding of thermocouples now make reference to PW-39.8 in all instances, consistently.

PW-51, PW-52 Revision Paragraph Heading Changes - PW-51 and PW-52 heading titles have been changed from "Acceptance Standards for Radiography" and " Acceptance Standards for Ultrasonic Examination" to "Radiographic Examination " and "Ultrasonic Examination", respectively.

Table PW-39 Revision P-No.15E Group 1 - Note 2 of Table PW-39, P-No. 15E Group 1 is editorially corrected to "P-No. 15E Group 1" instead of "P-No. 5B Group 2".

Table PW-39.1 Revision Minimum Holding Time - SI Units - The minimum holding time values listed in Table PW-39.1 in metric [SI] units are deleted since they were about 15% smaller than the US Customary values. Note 1 of Table PW-39.1 is now revised to offer guidance for the US Customary to Metric Unit conversion.

PEB-2.4 Revision Immersion Electric Resistance Elements - Pipe immersion type resistance heating elements have been added.

PEB-2.5, A-370 Addition Field Assembly of Electric Boilers - Paragraph PEB-2.5 was added to the scope of Part PEB permitting the field assembly of electric boilers. Also the Form P-2A is revised by adding the field assembly compliance block to the Data Report. A-370 Item 3 Description for "E" Code Symbol Stamp, line 2 now reads: "2. Design of electric boilers at the above location only and assembly of electric boilers at field sites controlled by the above location."

Mandatory Appendix IV Addition Mandatory Appendix IV - A new Mandatory Appendix IV is added to incorporate Code Cases 2330-1 and 2331 -1 into Section I. These Code Cases deal with the acceptable local thin areas on the inside or outside surface of spherical segmentsof heads (such as hemispherical heads and the spherical portion of torispherical and ellipsoidal heads) under pressure on the concave side and in cylindrical shells . The word "Shells" is inserted into the heading of PG-27.2.2. Paragraphs PG-27, PG-29 and A-317 are also amended making reference to Appendix IV.

Mandatory Appendix IV Revision Revised Definition of "C". - "C", the projected circumferential length of the Local Thin Area (LTA), was defined in Code Case 2331-1 in terms of L , the projected axial length of the LTA. This unnecessarily restricts the projected circumferential length to 2 times the actual projected axial length (2L) instead of the permitted axial length. Mandatory Appendix IV corrects this by defining "C"as 2 times the permitted maximum projected axial length or 2[sqrt (R x t)].

Subpart/Table: Part PEB


Subpart/Table: Mandatory Appendices




A-317.1 Revision Added "Shells" - Paragraph A-317.1 was amended to add the word "shells" to the list of items with which the minimum required thickness can be calculated by the formula.

Table A-360 Revision Update to Reference Standards - Section I has adopted ASME16.5-2009 in the 2010 Edition.

Table A-360 Revision ASME B16.25 - A cautionary note (Note 4) is added to A-360 against the ASME B16.25 standard to point out to the user that machining to the "C" dimension from Tables 1 and I-1 of B16.25 could result in wall thickness less than specified minimum wall thickness. This is because some of the pipe specifications allow more generous tolerance (for example -1%) as opposed to what B16.25 permits.

2056-1 Revision Annul Code Case 2056-1 - Code Case 2056 -1 for SA-333 Grade 6 carbon steel seamless or welded carbon steel pipe was annulled because it was incorporated in the 2007 Addenda as a revision to PG-9.1 and Table 1A of Section II, Part D in US Customary and Metric units to a temperature of 700 deg. F. (371 deg. C.). Impact testing is required for SA-333 Grade 6 at -50 deg. F. (-45 deg. C.). While Section I currently has no explicit rules regarding impact testing and fracture toughness, there are situations in which a User or Manufacturer imposes fracture toughness requirements and inclusion of this piping material in Section I facilitates compliance with such requirements.

2330-1, 2331-1 Revision Annul Code Cases 2330 -1 and 2331-1 - Code Cases 2330-1 and 2331 -1 dealing with the acceptable local thin areas on the inside or outside surface of spherical segments of heads (such as hemispherical heads and the spherical portion of torispherical and ellipsoidal heads) under pressure on the concave sideand in cylindrical shells, respectively, have been incorporated into new Section I Mandatory Appendix IV.

2632 Addition Use of Alloy UNS N06625 Grade 1 - New Code Case 2632 allows use of alloy UNS N06625 Grade 1 in the manufacture of products for use to 1200 °F (649°C) using material in specifications SB- 443 and SB-704.Section II Part D 2008 addenda provided allowable stress values for UNS N06625 Gr. 1 for Section I construction up to 1100°F. Data to 1200°F (649°C) was developed for Section VIII and is the source of the allowable stresses in this Code Case.

Subpart/Table: NonMandatory Appendices


Subpart/Table: Code Cases





SA-106 Revision Adoption of ASTM A 106/A 106M-08 - The updated specification permits NDE as an alternative to hydrostatic testing at the option of the material manufacturer and prohibiting supply of pipe that has failed either the hydrostatic test or the NDE when "NH" pipe has been ordered. Deleted flattening test requirement. A Supplementary Requirement for tighter chemistry and heat treatment for pipe for HF Acid Alkylation Service was added at the request of the petrochemical industry.

SA-213 Revision Adoption of ASTM A213/A213M-08 - Updated specification. Added H Grade heat treatment requirements in para. 6.2 and editorial correction of "TZZ" to "T36" in Table 5.

SA-307 Revision Adoption of ASTM Specification A 307-07b as ASME SA-307 - Updated specification.

SA-320 Revision Revised the exemption from impact testing - Austenitic stainless steels that are solution treated in the finished condition (Class 1A) are also exempt from impact testing for temperatures above -325°F (-200°C). Also, published a parallel Intent Interpretation: II-A-07-16.

SA-414 Revision Adoption of ASTM A414/A414M-07 - Maximum 0.30% Si added to Table 1.

SA-449 Revision Adoption of ASTM A 449-07b - Major changes: (1) added hex cap screws to scope,(2) removed 3 radial lines for marking - required to mark "A 449" instead , (3) all fasteners must meet the hardness requirements of Table 2; (4) studs and cap screws were added to para. 6.4.

SA-540 Revision Adoption of ASTM A540/A540M-06 - Table 2 metric values' conversion changed from “soft” to “hard” in material diameter and corresponding tensile and yield values. Grade B23, Class 2 metric impact test note revised from Note 2 to Note 4 for the largest diameter.

SA-556 Errata Correct the Unit Designation in SA-556/SA-556M - Changed "ft [mm]" to "ft [m]" in Table 4

SA-568 Revision Adoption of ASTM Specification A 568/A 568M-07a - Hot-rolled carbon and high-strength low-alloy (HSLA) steel sheet thickness range minimum lowered from .044” [1.2 mm] to .027” [0.7 mm].

SA-790 Revision Adoption of ASTM A790/A790M-08 - (1) Added Rockwell hardness requirement forUNS S39274., (2) Sulfur content corrected for UNS 32808 in Table 2.

Code Book: II

Part: A



Subpart/Table:




SA/EN 10028-3 Revision Adoption of EN 10028-3: 2003 - Note that only this edition (2003) of SA/EN 10028-3 is permitted - See Table ED-2 Normalized rolling not permitted for Grades P460XX (Section VIII, Division 2 Code Case 2594). Carbon, manganese, phosphorus,sulfur and nitrogen contents were lowered for for various grades. Yield and tensile strengths are provided for 150-200 mm. Thickness breaks for properties were revised.


Code Case 2612 Addition Permit the use of non-destructive electric test for SB-444 - ASTM B444-06 added non-destructive electric inspection requirements as an alternative to hydrostatic testing at the option of the material manufacturer. This specification was published in the 2010 Edition, but this Code Case was approved on September 8, 2009 allowing earlier use.

SB-166 Revision Adoption of ASTM B 166-08 - Clarified that hardness tests were required only for certain grades and product forms. Increased tensile and yield strengths of N06693. Added new grade UNS N06696.Added UNS N06617 heat treatment requirements and certification made mandatory.

SB-209 Revision Revision to UTS for UNS A95254 H112 @ 0.500-2.000 in. - Tensile strength revised from "32 ksi" to "30 ksi".

SB-221 Errata Errata to Table 2 of SB-221 - Corrected the brackets and alignment in SB-221 Table 2 to clarify the mechanical property requirements.

SB-265 Revision Adoption of ASTM B 265-09a e1 - Chemistry Table 2 was reformatted for improved utility. "Other Elements" replaced "Residual Elements" and notes were editorially revised and reorganized. Revised Grade 25 hydrogen from 0.0125 to 0.015 and AI from 5.6-6.5 to 5.5-6.75. Changed Grade 29 hydrogen from 0.015 to 0.0125. Specified thickness was corrected from 0.02 to 0.012 In Table 9. Change diameter to radius in 6.3 and Table 1. Clarified test details in 6.3, S1.3, S1.4, and S1.5. Expanded to cover all ASTM Grades and reformatted grade list in S1.4.

Part: B





Subpart/Table:




SB-338 Revision Adoption of ASTM B 338-09 - Chemistry Table 1 was reformatted for improved utility. "Other Elements" replaced "Residual Elements" and notes were editorially revised and reorganized.

SB-348 Revision Adoption of ASTM B 348-09 - Chemistry Table 1 was reformatted for improved utility. "Other Elements" replaced "Residual Elements" and notes were editorially revised and reorganized. Changed H in Gr. 25 from 0.0125 to 0.015. Changed H in Gr. 29 from 0.015 to 0.0125 . Grade 3 unacceptable in ASTM B348-05 only due to error in ultimate tensile strength (UTS).

SB-367 Revision Adoption of ASTM B 367-09 - Grade designations for Ti-Pd alloys changed. Minorchemistry and mechanical property changes.

SB-381 Revision Adoption of ASTM B 381-09 - Updated specification.

SB-395 Revision Adoption of ASTM B 395/B 395M-08 - General rewrite of the specification. Editorialcorrections were made to Section 7 and Table 7. Certification and test reports were made mandatory.

SB-444 Revision Adoption of ASTM B 444-06 - Added NDE instead of hydrostatic testing at the option of the material manufacturer. Certification and test reports have been made mandatory. See also entry for Code Case 2612.

SB-861 Revision Adoption of ASTM B861-09 - Updated specification. Para. 4.1.10 was editorially revised.

SB-862 Revision Adoption of ASTM B 862-09 - Updated specification.

SB-956 Revision Adoption of ASTM B 956-07e2 - Editorially corrected 8.3 from "C19400" to "C19200". Certification and test reports have been made mandatory.


Part: C





SFA-5.12 Revision SFA-5.12/SFA-5.12M - AWS A5.12/A5.12M:2009 (ISO 6848:2004 MOD), "Specification for Tungsten and Oxide Dispersed Tungsten Electrodes for Arc Welding and Cutting" was adopted as SFA-5.12/SFA-5.12M. The revision is a restructuring of the previous version and includes the following changes: (1) Clause 5 - "Certification" was deleted; (2) Table 1 - "Chemical Composition" was restructured. UNS Numbers were deleted, ISO 6484 Classifications were added as well as new Classifications "EWZr-8 (WZr8) and (WTh30); (3) "Units of Measure and Rounding-Off Procedure" were moved to Clause 1 and Clause 9, respectively; (4) "Summary of Test" was moved from Clause 7 to "Clause 3 - Classification"; (5) "Table 2 - Standard Sizes and Lengths" was restructured and "Standard Sizes" was moved from Clause 11 to Clause 8; (6) Previous Clause 14 "Electrode Identification" was moved to Clause 7; (7) "Packaging" (Clause 15) and "Marking of Packages" (Clause 16) was moved to Clause 11; (8) Precautionary Warning information was deleted from the text. The reader is referred to ANSI Z49.1 for further information .The previous "for information only" "Annex" is now "Annex A - Conditions of Use" and "Annex B - Analytical Methods" and remain "for information only". (1) Annex A Tables A1 and A2 have been added to show suitability of current supply type and approximate current ranges depending upon electrode diameter, respectively. (2) Annex B includes a "Safety Note on Health Aspects on the Use of Thoriated Tungsten Electrodes". Thoria is a low-level radioactive material.

SFA-5.29 Revision SFA-5.29 /SFA-5.29M - AWS A5.29/A5.29M:2010 , "Specification for Low-Alloy SteelElectrodes for Flux Cored Arc Welding" was adopted as SFA-5.29/SFA-5.29M. Changes from the previous specification were minor and editorial in nature. The most noticeable change was the deletion of the "General Notes" from "Fig. 4 - FilletWeld Test Assembly".

SFA-5.30 Revision SFA-5.30/SFA-5.30M - AWS A5.30/A5.30M:2010 , "Specification for Consumable Inserts" was adopted as SFA-5.30/SFA-5.30M. (1) Numerous changes from the previous specification were made to chemical composition ranges in Tables 1, 2, 3 and 4, as well as addition of Notes to Table 4; (2) Table 5 Metric [SI] dimensions were changed to match appropriate nominal sizes and overlap; (3) Table 5 and 6 US Customary units were changed from inch designation to NPS for pipe sizes.; (4) Table 6 and 7: Metric [SI] dimensions changed from "mm" designation to DN pipe sizes; schedule numbers were added to many diameters; Corrected mm [SI] conversion for 2.22 in (from 58.4 to 56.4 mm); Increased ID diameters for NPS 12 schedule 5S, NPS 14 and 16 schedule 10S; Changed ID dimension for NPS 1 schedule 5S from “1.185” to “1.186”; Changed note a from “Class 3, Style E insert rings” to “Class 3 Style R insert rings; (5) Figure 1: Removed dimensions from Class 5 inserts and replaced with “Dimensions and tolerances, see Table 8”.; Added wording for references, rounding, retest, etc… to bring it up to current AWS standard wording; (6) Clause 10: Replaced “Class 3, Rectangular-Shaped Cross-Section” with “Class 3, Solid Ring Inserts”; (7) Clause 14: Added requirement that “Style A inserts shall be suitably marked at intervals of not less than 5 in [125 mm]; (8) Clause 16: Required packages to be marked with shape and style, and required number of pieces be reported on package (previous requirement was net weight).

Subpart/Table:





Copper alloys Revision Revision to Add Copper Tempers - Added H00, H01, H02, H03, and H 04 tempersto SB-152 UNS C10200; H04 temper to SB-152 UNS C10400 in Table 1B; and H00, H01, H02, H03, and H04 tempers to SB-152 UNS C12300 in Table U.

R56323 Addition Added Ti alloy R56323 - Incorporated Code Case 2425 -2 allowing use of wroughtGrade 28 titanium alloy to 600°F in ASME Section VIII, Division 1 construction. Thisgrade (Ti 3Al-2.5V-0.1Ru) is mechanically the same as Grade 9 (Ti 3Al-2.5V). Additions were made to Tables 1B, U, Y-1 and physical properties tables.

S20100 and S30100 Revision Revised Grouping of S20100 and S30100 Materials - Changed sort order for 17Cr-4Ni-6Mn (UNS S20100) and 17Cr-7Ni (UNS S30100) stress lines in Section II, Part D Tables 1A, U, and Y-1. Amended the sort-order guidance in Section II, Part D "Guideline on Locating Materials in Stress Tables, and in Tables of Mechanical and Physical Properties". These are Cr-Ni austenitic stainless steels and are grouped with similar materials.

S31277 Revision Deletion of SA-312 and SA-479 UNS S31277 Stress Lines - Deleted stress lines in Tables 1A, U, and Y-1 since UNS S31277 is not in those material specifications .

SA-213-310HCbN/S310 42

Addition Addition of SA-213-310HCbN/S31042 - Updated Tables 1A, U and Y-1. This is for the incorporation of Code Case 2115 for Section I

SA-240-S32304 Revision Nominal Composition for SA-240-S32304 - Editorially revised the nominal composition for SA-240-S32304 to "23Cr-4Ni-Mo-Cu-N" to be consistent with otherproduct forms of S32304 in Tables 1A, 5A, U and Y-1.

SA-299 Grades A & B Revision Added SA-299 Grades A and B - This action incorporated Code Case 2364 for SA-299 Grades A and B up to 800°F (427°C) for Section I applications , up to 1000°F (538°C) for Section VIII, Division 1 applications, and up to 650°F (343°C) for Section XII applications. Stress values were added to Tables 1A, U and Y-1.

SA-645 Grade A Revision Added Grade A designation - The 2005 Edition of ASTM A 645 changed the designation of the 5% Ni steel to A 645 Grade A, and added a new 5-1/2% Ni steel as Grade B. Tables 1A, 5A, U and Y-1 were revised.

SA/EN 10028-3 Addition Increased thickness for SA/EN 10028-3 P275NH - Stress lines added for P275NH at 4-6" (100-150 mm) and 6-10" (150-250 mm) to Tables 1A, and Y-1. Section XII use is limited to thinnest thickness.

Part: D



Subpart/Table: All Tables




Tables 1A to 2B Revision Clarified Sec. III Classes TC and SC and "T"-Notes - Revised the title of Tables 2A and 2B to clarify that they cover "Section III, Div. 1, Class 1 and Section III, Div. 3, Classes TC and SC". In Tables 1A and 1B, made reference in time-dependent "T"-Notes listing to the General Note that explains the italics.

Note G35 Revision Deletion of Note G35 and addition of General Notes - Deleted specific Note in Table 1A referring to Appendix A for various carbon steels within the stress allowable tables and replaced with a General Note. The General Note reads : "The properties of steels are influenced by the processing history, heat treatment, melting practice, and level of residual elements, see Appendix A for more information."

Note H3 Revision Deletion of Note H3 from Table 1A - Deleted minimum PWHT Note H3 for variousproduct forms of Grade 91 - this is covered by the construction Codes.

Note H4 Revision Deleted Note H4 - Heat Treatment Requirements of Table 1A on the SA-995 1 B stress line were revised and the reference to Note H4 was deleted. Note H4 was likewise deleted from Table 1A as it addressed the ferrite content of this duplex stainless steel, but offered no value.

Notes G7 and G8 Revision Deletion of Notes G7 and G8; replaced with Note G32 - Embrittlement notes wereconsolidated.

SA/GB 6654 16MnR Errata Size Breaks for SA/GB 6654 16MnR - The lower limit size breaks for SA/GB 6654 16MnR is an inclusive dimension and is changed to "< =".

N06230 Revision Correct UNS N06230 Allowable Stress Values - The metric [SI] stress values were adjusted as much as 2 MPa up or down.

N06617 Revision Correct Table 1B to add T-Notes and Italics - Added indications of time-dependent properties at 1200/1250 °F (650/675 °C)

Note W16 Revision Addition of Note to Table 1B to Better Identify EPC's - Note (16) was added to Table 1B to identify the intended External Pressure Chart (EPC) depending on the weld filler metal used and material thickness for aluminum alloys referencing both EPC's NFA-12 and NFA-13.

SB-163-N02200 Revision External Pressure Chart for "Stress-Relieved" - Reassigned external pressure chart for "Stress-Relieved" SB-163-N02200 seamless tube from NFN-2 to NFN-25

SB-466-C71500-O60 Revision Editorial correction to the minimum tensile strength - Changed minimum tensile strength from "50 ksi" to "52 ksi". Since the allowable stresses are yield strength controlled, they do not change. The correct tensile strength value for SB-466 appears in Section IX Table QW/QB-422.

Subpart/Table: Table 1A


Subpart/Table: Table 1B




Note E1 Revision Deletion of Note E1 and its reference - This note was for Section VIII, Div. 2 applicability, which is now published in Table 5B

SA-449 Revision Adoption of ASTM A 449-07b - Since the updated specification added Type 3, Type1 was added in the "Type/Grade" column in Table 3 for SA-449 to limit use to that type

SA-574-G41400 Revision Deletion of a duplicate stress line - Also editorially revised nominal composition to 1Cr-1/5Mo

Note G15 Revision Deletion of Note G15 - Deleted specific Note in Table 5A referring to Appendix A for various carbon steels within the stress allowable tables and replaced with General Note (e).

S17400 Addition Addition of S17400 - Incorporated Code Case 2277 for Section VIII, Division 2 construction.

S32550 Addition Addition of S32550 Section VIII, Division 2 construction - This action incorporates Code Case 2068-3 for Section VIII, Division 2 construction.

SA-612 Errata Correction of P-No. - SA-612 listing was corrected from "P-No.1" to "P-No.10C", as is published in Table 1A and in Section IX, QW/QB-422 (the official P-No. source)

Copper Alloys Revision Various Corrections to Copper Alloy Entries - SB-169-C61400: revised size break from "t <= 2" to "1/2 < t <= 2" and added new stress line for "t <=1/2".SB-171-C70600: corrected size break to read "t <= 5".SB-171-C71500: corrected allowable stress values at 500-700°F (up to 1.7 ksi increase).

Note W4 Revision Addition of Note to Table 5B to Better Identify EPC's - Note W4 was added to Table5B to identify the intended External Pressure Chart (EPC) depending on the weld filler metal used and material thickness for aluminum alloys referencing both EPC's NFA-12 and NFA-13.

Titanium alloys Errata Errors in Ti alloy allowable stress lines - Revised allowable stress lines for the titanium alloys R50400, R52400, R52402 and R 53400. NOTE: THE ALLOWABLE STRESSES WERE REDUCED UP TO A MAXIMUM OF 66%.



Subpart/Table: Table 3


Subpart/Table: Table 5A






SA-705 Gr. 631 Revision Nominal composition editorial correction - Revised "17Cr-4Ni-1Al" to "17Cr-7Ni-1Al" and amended sort order

Table TCD Revision Remove interpolated values from footnotes 5 and 6 - Remove interpolated thermal diffusivity (TD) values for 5Cr and 9Cr alloys , and added Section II, Part D Appendix A, A-120 on the influence of magnetic transition on physical properties.

Table TE-1 Revision Thermal Expansion Values 8% & 9% Ni Steels - Provided coefficients of thermal expansion values up to 550°C in Table TE-1 in the Metric [SI] Section II. Part D.

Table TE-1 Revision Thermal Expansion Values Stainless Steel Group 3 - Provided coefficients of thermal expansion values up to 825°C in the Metric [SI] Section II, Part D.

Table TE-1 Revision Revised values for ductile cast iron - US Customary and Metric [SI] Section II, Part D were affected. Missing "Coefficient A" values were provided and metric [SI] values were reduced to correspond to US Customary values and available data. "Coefficient C" values were revised.

Table TE-1 Revision Removed Note (5) - Note (5) for 17-4PH, was incorrect and is deleted.

Table TE-1 Revision Coefficient of Thermal Expansion Values for 17-4/H1150 - Provided coefficients ofthermal expansion values up to 550°C in the Metric [SI] Section II, Part D.

Table TE-3 Revision Revised values for C1XXXX - This series was revised in the US Customary and Metric [SI] Section II, Part D to provide missing "Coefficent A" values..

Table TE-4 Revision "Coefficient A" values - The "Coefficient A" values for various alloys were added or expanded in significant digits in Table TE-4 in the US Customary Section II, Part D.

Table TE-4 Revision New coefficient of thermal expansion values - Revised coefficient of thermal expansion values for N04400 and N 04405 were provided .

Table TM-1 Revision Modulus of Elasticity - High-Si Stainless Steels - Published modulus of elasticity data for high-silicon stainless steels as Material Group I

Table TM-1 Revision Modulus of Elasticity - High-Mo Stainless Steels - Published modulus of elasticityvalues for high-Mo stainless steels as Material Group J

Table TM-1 Revision Modulus of Elasticity - Duplex Stainless Steels - Values were assigned as Group H

Table TM-5 Revision Modulus of Elasticity Values for Zr Alloys - Corrected modulus of elasticity values for Zr alloys in Table TM-5 and added a note on anisotropy. Added A-454 on anisotropy to Appendix A.

Tables TE-4, TCD and TM-4

Revision Physical property data for N06686 - Added modulus of elasticity and thermal expansion values for N06686, which are the same as for N06059

Subpart/Table: Table Y-1


Subpart/Table: Subpart 2




NFN-9 Revision Extend External Pressure Chart to1650°F for Alloy 800H - External Pressure Chartcurves for Alloy 800H were extended from 1100°F to 1650°F.

NFN-23 Revision Table NFN-23 and Figure NFN-23 - Provided corrected Table NFN-23 and Figure NFN-23 in both Metric [SI] and US Customary Section II, Part D.

Notes to Figures Revision Revised Notes to Figures of Subpart 3 - Former Notes (14), (8), (9), (10), and (13)were renumbered as (1), (5), (6), (7), (8), and (9), respectively, and corresponding cross-references were revised.

Subpart/Table: Subpart 3





NCA-1223, NCA-3900, NCA-4100, and NCA-7100

Revision Qualification of MOs supping polyethylene piping material - Revised NCA-1223, NCA-3900, NCA-4100 , NCA-7100 for qualification of material organizations (MOs) in the supply chain for polyethylene piping material. Rules for the qualification of Polyethylene Material Suppliers have been added to NCA-3970. Table NCA-7100-2 was revised to include Plastic Pipe Institute Standards TR-3 and TR-4. THESE ARE MAJOR CHANGES INCORPORATING THE RULES OF CODE CASE N-755 TO PROVIDE RULES FOR POLYETHYLENE SOURCE MATERIAL AND PIPING MATERIAL

NCA-3820(a) Revision QSC Holder and qualified source material - For clarification NCA-3820(a) was revised to add "(QSC)" after first mention of Quality System Certificate and add a sentence stating the accredited Material Organization that maintains an ASME Quality System Certificate is also known as aQuality System Certificate (QSC) Holder.

NCA-3855.2(b) Revision Revised NCA-3855.2(b) - Added the word “qualified” between "NCA-3855.5", and “source material”.

NCA-3862.1(d) Revision NCA-3862.1(d) Material Certification - Revised NCA-3862 .1(d) Material Certification to clarify the various requirements for reporting heat treatment details which differ based on the requirements of the material specification and the material type. NCA 3862.1(d) Material Certifications have different minimum heat treatment detail reporting requirements based on both the stated heat treatment parameters of the material specification and the material type, i.e., carbon steel vs stainless and nickel alloys

NCA-4100 Revision Incorporate NQA-1 2008 Edition - Revised NCA-4110, NCA-4120 and NCA-4134 to update the reference from NQA-1 1994 to NQA-1 2008 Edition. The new reference removes the distinctions between "Basic" and "Supplementary" requirements. Year identifier was deleted in these paragraphs and added to table NCA-7100-2.

NCA-4133 Revision Deleted paragraph NCA-4133 - Paragraph NCA-4133 was deleted as it was verbatim with NCA-4131 .

Code Book: III

Part: NCA



Subpart/Table:




NCA-5125(b) Revision ANI Supervisor Audits of Material Supply Activities - Revised NCA-5125 (b) to require ANI Supervisor Audits of N and NV Certificate Holders if the material they supply or manufacture is replacement material intended exclusively for incorporation into items originally manufactured or fabricated and furnished by the N or NV Certificate Holder under their certificate. The N or NV Certificate Holder is not required to have "Material Organization' (MO) included within the Scope of the Certificate of Authorization.

NCA-9200 Revision NCA-9200 Glossary - Revised NCA-9200 Glossary definitions for: "approved supplier", "Certificate Holder", "Material Organization", and "source material ". Added definitions for: "QSC (Quality System Certificate) Holder", "unqualified source material" , and "source material". Also added were numerous definitions associated with Polyethylene Material Organizations (NCA-3970 ).

NCA Headers Errata Errata - Revise NCA Header Pages. - The errata corrects the header on the published pages to indicate it applies to Divisions 1 and 2. Previously it indicated Division 1 only.

NCA (various) Revision Changed terminology "Accredited / Accreditation" - The terminology used by ASMEwas not consistent with the ISO/IEC documents . In order for ASME to align itself with the ISO/IEC the terms "certified", "certification" "authorized" and "authorization" shall be used to describe authorizations that were previously described as accredited or accreditation.

Table NCA-4134.17-2 Errata Corrected various items in Subsection NCA by errata. - Deleted reference to NCA-4121 in item #6 of the Table.

Table NCA-7100-2 Revision Updated Entries - (1) Table NCA-7100 -2 was revised to update the reference to NQA-1 by correcting its title and to include NQA-1a 2009 Addenda. This Addenda removes the distinctions of "Basic" and "Supplementary" Requirements ; (2) AddedPlastic Pipe Institute Standards TR-3 and TR-4




Appendix V Revision Changed terminology "Accredited / Accreditation" - The terminology used by ASMEwas not consistent with the ISO/IEC documents . In order for ASME to align itself with the ISO/IEC the terms "certified", "certification" "authorized" and "authorization" shall be used to describe authorizations that were previously described as accredited or accreditation.

V-1000 Revision Allowable tensile strength - Revised Appendix V Table V-1000 Note 16 to read "Allowable tensile strength from ASME Code, Section II, Part D."

Table of Contents Errata Changed Table of Contents by errata - Corrected reference from "WC-3000" to "WC-3200" in Appendix XIII title for Division 3

Appendix CC Revision Alternative Rules for Linear Piping Supports - Appendix CC is the Non-Mandatory Appendix of “Alternative Rules for Linear Piping Supports”, is referred to in ANSI/AISC N690-1994. The ANSI/AISC N690 was superseded and added to Supplement 2. Revised Non -Mandatory Appendix CC to include reference to supplement 2 of ANSI/AISC N690.

Appendix CC Errata Corrected punctuation - Paragraph CC-1111 punctuation was corrected.

Appendix XXIII, Table B1

Errata Removed reference to Subsection CB - The reference was deleted since Subsection CB was removed in the 1995 Addenda.

Code Book: III-1

Part: Appendices





Subpart/Table: Nonmandatory Appendices


Subpart/Table:




N-779 Errata Corrected Code Case N-779 by errata . - Several published errors were corrected.


Figure NB-3224-1 Errata Corrected Note (5) - The reference to "Subpart 2" was corrected to "Subpart 1"

NB-3228.1 Revision Corrected NB-3228.1 Section II note numbers - "Note (2)" references in paragraph NB-3228.1 were incorrect. They have been changed to "Note (G7) in Table A1" and "Note (G1) in Table B2".

NB-3643 Revision Corrected definitions in NB-3643.3(a) - This resolves the nomenclature discrepancies found in Figure NB-3643 and adds the definitions for "r [sub 1]", "r [sub 2]", "r [sub 3]", "r [sub p ]", and "L [sub 1]" to NB-3643.3 (a). The definitions for "r[sub 1]", "r [sub 2]", "r [sub 3]", "r [sub p]", and "L [sub 1]" are found in NB-3683.1 (a).

NB-3672.5 Revision Specifying E [sub c] as the modulus of elasticity - This clarifies the requirement byspecifying "E [sub c]" as the modulus of elasticity at room temperature.

NB-3674 Revision Aligned NB-3674 pipe support terminology with NCA-9200. - The glossary of terms in NCA-9200 refers to items that support piping as “pipe supports.” The previous term “pipe supporting elements” in NB-3674 was changed to "pipe supports".

NB-3686.2, Figure NB-3686.2-1

Revision Editorial Correction, Flexibility Factors for Curved Pipe - Clarified integral limits of "theta nom" for curved pipe; corrected Figure NB-3686.2-1. The integral limits to the theta nom equations for curved pipe appear to be zero to alpha; this is not mathematically correct because alpha is a variable, not a constant.

Part: Code Cases



Part: NB



Subpart/Table: Article NB-3000




NB-4321 Revision Changed terminology "Accredited / Accreditation" - The terminology used by ASMEwas not consistent with the ISO/IEC documents . In order for ASME to align itself with the ISO/IEC the terms "certified", "certification" "authorized" and "authorization" shall be used to describe authorizations that were previously described as accredited or accreditation.

NB-4622 Revision Temper Bead Welding - Revised NB-4622.7, NB-4622.9, NB-4622.10 and NB-4622.11 to incorporate the Temper Bead Welding qualification rules in SectionIX (QW-290) to replace the previous qualification requirements.


NC-3262.1 Revision Updated the reference to ASME B16.5 - In May and June 1977 an action was made to adopt ASME B16.34-1977 and to update the reference to ASME B16.5 from 1968 to 1977. A specific group of tables in ASME B16.5 was referenced in NC-3262.1, and the Tables were renumbered in ASME B16.5-1973. This oversightintroduced an error in NC-3262.1 in the Winter 1977 Addenda. The errata to NC-3262.1, is retroactive to the Winter 1977 Addenda.

NC-3332.2 (c) Errata Errata - Under the definition of t [sub n], "K1" was corrected to "K [sub 1]".

NC-3674 Revision Aligned NC-3674 pipe support terminology with NCA-9200. - The glossary of terms in NCA-9200 refers to items that support piping as “pipe supports.” The term “pipe supporting elements” previously used in NC-3674 was changed to "pipe supports".

NC-3940 Revision Alternate Rules for Axial Compressive Membrane Stresses - Revised NC-3940 toincorporate Code Case N-530 for Alternate Rules for Axial Compressive Membrane Stresses.

Subpart/Table: Article NB-4000


Part: NC



Subpart/Table: Article NC-3000





ND-2510 Errata Corrected Reference - "NC-3513" has been corrected to "ND-3513".

ND-3643.1 Errata Corrected References - In subparagraph (c), "(1) through (4)" was corrected to "(1) through (5)"; In subparagraph (c)(4), "(a), (b), or (c)" was corrected to "(a) or (b)".

ND-3674 Revision Aligned ND-3674 pipe support terminology with NCA-9200. - The glossary of terms in NCA-9200 refers to items that support piping as “pipe supports.” The term “pipe supporting elements” previously used in ND-3674 was changed to "pipe supports".

ND-3900 Revision Alternate Rules for Axial Compressive Membrane Stresses - Revised ND-3940 toincorporate Code Case N-530 for Alternate Rules for Axial Compressive Membrane Stresses.

ND-4321 Revision Changed terminology "Accredited / Accreditation" - The terminology used by ASMEwas not consistent with the ISO/IEC documents . In order for ASME to align itself with the ISO/IEC the terms "certified", "certification" "authorized" and "authorization" shall be used to describe authorizations that were previously described as accredited or accreditation.

Part: ND



Subpart/Table: Article ND-2000









NE-3334.2 Revision Limits of reinforcement - The limits of reinforcement normal to the vessel wall are given in Para. NE-3334.2(a), (b) and (c). This change revised Para (a) to bring the limits of reinforcement for nozzles of the type shown in Figure NE-3334 -2.1 sketches (a), (b), (d) and (e) into agreement with the limits given in Para. (c). Previously, Para. (c) set the reinforcement limit normal to the vessel wall at the greater of 0.5 sqrt {(r [sub m] X t [sub n] + t [sub e]} or (2.5t [sub n] + t [sub e ]) provided a reinforcing pad or and insert plate is used, but Para (a) restricts this limit to "0.5 sqrt {(r [sub m] X t [sub n]} + 0.5 r [sub 2]" and does not include the other limit of 2.5t [sub n].


NF-1132 Revision Jurisdiction for bolts connecting supports - NF-1132(e) and (f) were revised to clarify Subsection NF jurisdictional boundary for bolts to building structure.

Part: NE



Subpart/Table: Article NE-3000


Part: NF



Subpart/Table: Article NF-1000




Various Errata Errata changes in Section III Subsection NF - (1) Changed K [sub m] to K[sub s ] in Table NF-3312.1(b)-1 line 1; (2) Revised Note 2 of NF-1242

NF-4321 Revision Changed terminology "Accredited / Accreditation" - The terminology used by ASMEwas not consistent with the ISO/IEC documents . In order for ASME to align itself with the ISO/IEC the terms "certified", "certification" "authorized" and "authorization" shall be used to describe authorizations that were previously described as accredited or accreditation.

NF-8000 Revision Changed terminology "Accredited / Accreditation" - The terminology used by ASMEwas not consistent with the ISO/IEC documents. In order for the society to align itself with the ISO/IEC the terms "certified", "certification" "authorized" and "authorization" shall be used to describe authorizations that were previously described as accredited or accreditation.


Various Errata Errata changes in Section III Subsection NG - (1) Changed reference NG-3213.32to NG-3213.22 in Paragraphs NG-3224 & NG-3224 .1; (2) Deleted reference to Tables 2C and 4 in NG-2121, NG-2571.2, and Figure NG-3221-1 note (9);







Part: NG



Subpart/Table: Article NG-3000





Various Errata Errata changes in Section III Subsection NH - (1) Corrected Table 1-14.10 C-1 in title from "ERNiCrFe2" to "ENiCrFe 2"; (2) Changed reference from "Stress Report NCA-3350" to "Design Report NCA-3550" in T-1714 .

Part: NH



Subpart/Table: Article NH-3000





Figure CC-4542.9-1 Revision Figure Redesignated. - Previous "Figure CC-4542-1" ("Fillet and Socket Weld Dimensions") has been editorially redesignated as "Figure CC-4542 .9-1" and its cross-references revised.

Table CC-4542.8.1-1 Revision Table Redesignated. - Previous "Table CC-4542-1" ("Maximum Thicknesses Permitted") has been editorially redesignated as "Table CC-4542.8.1-1" and its cross-references revised.

Code Book: III-2

Part: CC



Subpart/Table: CC-4000





WA-3820 Revision Changed terminology "Accredited / Accreditation" - The terminology used by ASMEwas not consistent with the ISO/IEC documents . In order for ASME to align itself with the ISO/IEC the terms "certified", "certification" "authorized" and "authorization" shall be used to describe authorizations that were previously described as accredited or accreditation.

WA-4110, WA-4120, andTable WA-7100-2

Revision NQA-1, 2008 Edition 2009 Addenda, - This revision incorporates NQA-1, 2008 Edition with the 2009 Addenda, into Division 3 in WA-4110, WA-4120, and Table WA-7100-2

WA-9200 Revision WA-9200 Glossary - Revised definition for "source material". Added definition for "qualified source material".

WB-4320 Revision Changed terminology "Accredited / Accreditation" - The terminology used by ASMEwas not consistent with the ISO/IEC documents . In order for ASME to align itself with the ISO/IEC the terms "certified", "certification" "authorized" and "authorization" shall be used to describe authorizations that were previously described as accredited or accreditation.

Code Book: III-3

Part: WA



Subpart/Table: WA-3000






Part: WB

Subpart/Table: WB-4000




WB-5111 Revision Requirement for leak testing - Removed the requirement for leak testing to be performed in accordance with Section V, Article 10, T-1030

WB-6710(b) Revision Allowable leakage rate - This changes the allowable leakage rate from that specified in “Section V, Article 10, Appendix IV or V”, to as “defined in the Design Specification” with reference to ANSI N14.5 for leakage rate determination .

WC-2432.2 (c) Errata Corrected Paragraph reference - "NCA-3867" was changed to "NCA-3862.1".





Part: WC

Subpart/Table: WC-2000




Various Revision Editorial changes - Several changes to Section III, Div. 3, Article WC-3000 :WC-3111 - Corrected grammar in first sentenceWC-3111(b) - Wording added to provide guidance for impact loads that are applied to storage containmentsWC-3111(e) - Wording added to clarify loading list; Spelling of "earthquake" correctedWC-3112.3 - Spelling of "conjunction" corrected.WC-3112.4 - Clarified wording related to applicable materials where bolting material is not limited to the P numbers listed in Table WC-4622.1-1WC-3112.4(b) and (c)- WC-3112.4(b) design requirements were moved to WC-3200 [specifically WC-3211.2(c)]. WC-3112 .4(c) was deleted since these requirements are already located in WC-3200.WC-3133.4(b)- Definitions for two variables, "D" and "h" were added and the definition of "R" clarified in support of Table 3133 .4-1.WC-3211.1(b)- Footnote added to clarify use of Division 3 terminology within Section III Division 1 appendix. Reference to footnote also added.Revise WC-3211.2(c) to include the requirements of WC-3112.4(b) and create WC-3211.2(d).WC-3217.2 - Reference to footnote added to clarify use of Division 3 terminology within Section III Division 1 appendix.WC-3217.3 - Heading changed from "Definitions" to avoid confusion with the Definitions in Appendix XIII. Also, incorporated two corrections to the grammar in the first paragraph.WC-3219.1, WC-3224.6, WC-3225 .2, WC-3251.1 - Updated footnote numbering because additional footnote is included in this proposal. Updated number = Old number + 1

WC-5111 Revision Requirement for leak testing - Removed the requirement for leak testing to be performed in accordance with Section V, Article 10, T-1030.

WC-6710(c) and WC-6720(c)

Revision Allowable leakage rate - This changes the allowable leakage rate from that specified in “Section V, Article 10, Appendix IV or V”, to as “defined in the Design Specification” with reference to ANSI N14.5 for leakage rate determination .










Figure HG-530.3 Errata Revised Figure HG-530.3 by Errata - This nameplate is for hot water boilers only. Reference to steam data was deleted, and the subsequent Notes were renumbered 1 through 4.

HG-100 Revision Update to HG-100(a) - Revised Scope of Section IV (HG-100) to include referenceto requirements in Part HA in order to refer the user to the additional requirements for cast aluminum boilers.

HG-307.4 Errata Equations corrected by Errata - The following corrections to equations and paragraphs were made in the 2010 Edition:- HG-307.4 equation (6) - corrected the "t [sub s ]" in the denominator to be "t [sub h]".- HG-307.4(f) - the "2r" dimension has been corrected to be "2t [sub r]"

HG-312.4, HG-312.7 andHG-321.8

Revision Paragraph and Figure references revised - References to Figures in paragraphs HG-312.4, HG-312.7 and HG-312.8 have been revised to match up with the corresponding Figures.

HG-360.1 Revision Clarified and added alternate methods of cutting tube holes. - Revised HG-360.1 to allow cutting of tube holes by drilling, punching, punching and shaving, laser, thermal, plasma-arc or high pressure water jet. The paragraph previously limited making tube holes by drilling or punching. This revision provides for the newest technologies in metal cutting, such as laser and high pressure water. Also, it nowprovides much more detail for cutting such holes.

HG-400.2(g) Revision Editorial Revision to HG-400.2(g) - In paragraph HG-400.2(g), the reference in thelast sentence was changed from "HG-400.2(a)" to "HG-400.2(c)".

HG-401.3 Revision Certification interval of PRVs changed to 6 years. - The Certification interval required for Manufacturers of HV stamped pressure relief valves has been revised to 6 years from the previous requirement of 5 years. This is so the interval better synchronizes to coincide with the ASME 3 year audit cycle.

HG-515.4(b) Revision Rules for Mass-Production of Boilers and Water Heaters - Revised subparagraph(b) to reference the new Appendix 7 for mass produced boilers and HLW stamped vessels. See entry for Appendix 7 for the details.

Code Book: IV

Part:



Subpart/Table: Part HG




HG-530 Revision Marking requirements for HA boilers revised - Paragraph has been revised to separate the marking requirements of cast iron and aluminum boilers. It is now permissible to etch the required information in lieu of the previous requirement of only casting into each section as well as the end and intermediate cored sections. Stamping on the sections is also permitted for aluminum boilers as well as cast or etched. In lieu of casting, etching or stamping all of the required data directly on the sections, aluminum boilers may also have an attached nonferrous nameplate which contains Manufacturer's name, MAWP, and material specification. Also, Footnotes have been renumbered. There was no Footnote (2) and Footnote (3) has been added. Title and Note revised for Figures HG-530.4, HG-530.5, HG-530.7 and HG-530.8 to be consistent with the paragraph HG-530.2 changes. Added Figure HG-530.6 and renumbered subsequent Figures.

HG-540.2 Revision Revised length of authorization for HA boilers - When Part HA was added, the intent to make the requirements the same as those for cast iron boilers. This revision changes the length of time that a Certificate of Authorization is valid from 3 years to 1 year to be consistent with cast iron boilers.

HG-540.4 Revision Revised to add aluminum boiler references - The last two sentences of HG-540.4have been revised to indicate that the quality control system requirements of Appendix F are not required for cast aluminum boilers but rather the requirements of Article 5 in that Part must be met.

HG-540.5 Revision Clarifies that annual review shall be done by ASME Designee. - When Part HA was added to the book the intent was to make the requirements for the annual review and renewal of the Certificate of Authorization to be the same as those for cast iron boilers. The revision to the first paragraph clarifies this requirement. Thelast paragraph has been revised to state that the requirements for a written description or checklist of the quality control system in accordance with the requirements of Part HA is also required.

HG-611 and HG-612 Revision Added electronic temperature and pressure indicators. - The revision to paragraphs HG-611 and HG-612 clarifies that electronic pressure sensor and electronic temperature sensor are permitted instead of the traditional mechanical pressure gages and thermometers that are currently used. Subparagraph HG-611(c) was added to include these gages and subparagraph (c) was renumbered as (d). Subparagraphs (a) and (b) were added to HG-612.

HG-716 Revision Corrected metric value in HG-716(a)(1) - The metric equivalent for boiler input rating of 400,000 Btu/hr was revised from "115 kW" to "117 kW".

Figure HW-701.3 Revision Added sketch (e-2) for Flat Heads to Shells - Added sketch (e-2) to Figure HW-701.3 permitting smaller weld sizes for flat heads attached to shells when supported by tubes or stays . This revision incorporates Code Case 2623. Also, revised title of sketch (e-1) to depict Unstayed Flat Head.

Subpart/Table: Part HF




Figure HW-701.3 Revision Fillet weld in sketch (e) revised - Fig. HW-701.3 sketch (e) required a minimum 2t[sub s ] weld depth for attaching a flat head to shell when the weld is full penetration through the shell thickness. This was probably based on a similar requirement in Section VIII, Div. 1 for flat head attachments. This condition could result in overly conservative fillet weld sizes, especially for a flat head supported by tubes or stays . To provide some relief from this large fillet weld, a new sketch (e-2) was added which provides for smaller fillets when the head is Two new figures (e-1) and (e-2) have replaced the sketch (e). These sketches separate the minimum weld requirements for flat heads or tubesheets that are stayed. The minimum size of fillet weld is the smaller of 0.25 inch, 0.25t [sub h] or 0.25t [sub s ],so a smaller fillet weld is now permitted while still maintaining a full penetration weld.

HF-301.2 Revision Aluminum added to HF-301.2 - Added "aluminum " to the list of nonferrous materials that can be used for plate. Also, confirms a minimum thickness of 1/8" (3 mm). Use of this material was allowed only by Code Case 2501 , which is scheduled to be annulled.

HW-713(c) Errata Reference corrected by Errata - In paragraph HW-713(c) the previous reference to"HG-346(c)" was corrected to "HG-346.3".

Table HF-300.1 Errata Table Notes corrected by Errata - Note 18 has been changed to correctly refer to HF-204.2 and HF-204.3.

Table HF-300.2 Revision Note (9) deleted from Table HF-300.2 - Note (9) was erroneously added in previous Addenda. Along with the published stress values, at temperature , the Note specifying 200°F (93°C) was not needed, so it was deleted and subsequent notes were renumbered.

HLW-600(d) Revision Rules for Mass-Production of Boilers and Water Heaters - Revised subparagraph(d) to reference HG-514.3(b) for mass produced boilers and HLW stamped vessels. See entry for Appendix 7 for the details.

Appendix 2, Table 2-100 Revision Updated Reference Standards in Section IV - The reference standards listed in Table 2-100 were very outdated. The latest edition of the ASME B16 referenced standards is now listed. Also, ASME B16.28 was removed since in was incorporated into the latest edition of ASME B16.9.

Subpart/Table: Part HLW


Subpart/Table: Appendices




Appendix 7 Revision Rules for Mass-Production of Boilers and Water Heaters - This MAJOR REVISIONupdates the rules governing mass production of Section IV boilers, water heaters, and storage tanks specified in HG-515.4(b) and HLW-600.3(d), respectively. It is recognized that in a high-volume manufacturing environment it is impracticable for the Authorized Inspector to fulfill each of his/her required duties. In these situations, and under the purview of ASME, the Manufacturer then takes on some of the inspection responsibilities that would normally be carried out by the AI. The previous rules for multiple duplicate construction in HG-515.4(b) and HLW-600.3(d) were very thin on detail, and over the years several Interpretations were published to clarify the intent of these rules. The primary goal of this revision was to bring into Section IV those clarifications and also to expand the level of detail on how to address mass production of boilers, water heaters, and/or storage tanks. These expanded rules are found in a new Mandatory Appendix 7. THESE REVISIONS SHOULD BE CAREFULLY REVIEWED BY HG-515.4(b) and HLW-600.3(d) MANUFACTURERS AND THEIR AIAs. A DETAILED DESCRIPTION OF THE CHANGES CAN BE FOUND IN THE "EXECUTIVE SUMMARY" OF THIS SYNOPSIS.

Nonmandatory Appendix K

Revision Words "and cast aluminum" added to Appendix K - The words "and cast aluminum" have been added to the description of Certificates of Authorization for items 1, 2, 3, 4, 6, 7 to address an accidental omission when Part HA was added to the Code book.

Case 2382-3 Revision Intent Interpretaion and change to fillet radii - When Part HA was developed, Part HC was used as a guide with the intent of rewording sections applicable to cast iron requirements to those applicable to cast aluminum requirements. Paragraph HC-320 was used as a template for with the radius requirement erroneously staying at one times the thickness of the thinner sections being joined when the intent was one-half times. HA-303 was corrected in the 209 Addenda but the change did not occur in this Case at the same time.

Case 2501 Addition Revision to Code Case 2501 - A new paragraph was added to provide for a general minimum thickness as well as a minimum in the bends. The Case also adds a protection from mechanical damage warning. Also, the allowable stress values were changed at 250 °F, 300 °F, 100 °C, 125 °C and 150 °C.

Case 2603 Addition UNS S32101 permitted . - New Case allows the use of UNS S32101 duplex (ferritic-austenitic) stainless steel from SA-240, SA-790 and SA-789 in the construction of unlined corrosion resistant Part HLW water heaters and storage tanks.






Article 12 Revision Revised Article 12 and Mandatory Appendix I - Due to new developments in acoustic emission (AE) examinations, the AE Working Group solicited input from experts in the industry which resulted in several changes to Article 12 and its Mandatory Appendix I. The following paragraphs were revised: T-1220.1, T-1221, T-1223.2, T-1224.2, T-1230, T-1243.1, T-1243.2, T-1243 .5, T-1244 .1, T-1244.3.2, T-1291, T-1292 and Mandatory Appendix I-1291 .

Article 17, T-1710(a) Revision Revised T-1710(a) - Deleted the words "and equipment" from T-1710 (a) to make it consistent with similar Articles in Section V.

Article 1, T-180 Revision Revised T-180 - Article 1, T-180 referred users to the referencing Code Section foracceptance standards for the NDE methods contained in Section V. However, Section V Article 10 contains acceptance standards for most leak test techniques, and evaluation criteria for acoustic emission techniques are contained in Section VArticles 11 and 12. The revision clarifies that some acceptance criteria are indeed found in Section V.

Article 4, Appendices VII& VIII

Revision Adopted Article 4 Mandatory Appendices VII and VIII - Mandatory Appendix VII for workmanship-based acceptance criteria and Mandatory Appendix VIII for fracture mechanics-based acceptance criteria for ultrasonic examination (UT) procedural requirements when UT is allowed in lieu of radiography were adopted. Workmanship-based acceptance criteria are standards for acceptance of a weld based on the characterization of imperfections by type (i .e - crack, incomplete fusion, incomplete penetration or inclusion) and size (i.e.- length). Fracture mechanics-based acceptance criteria are standards for acceptance of a weld based on the characterization of imperfections by location (i.e - surface or subsurface) and size (i.e. - length or through wall height).

Article 4, Appendix D-473

Revision Revised Article 4, Nonmandatory Appendix D-473. - The first sentence of Nonmandatory Appendix D-473 was incomplete. Revised second sentence for clarity and revised title to "Flaw Sizing Techniques to Be Qualified and Demonstrated".Revised last sentence when the technique used is an amplitude technique.

Code Book: V

Part:



Subpart/Table: Subsection A




Article 4, Appendix III, Figure III-434.2.1(a)

Revision Revised Article 4, Mandatory Appendix Figure III-434.2.1(a) - On thin material, or thick material broken down into multiple examination zones, the indication from one reflector may affect indication of another if all of the holes are machined on thesame face (side) of the calibration block.Article 4, Mandatory Appendix III, Figure III-434.2.1(a) - General Note (c) was revised to allow side drilled holes to be machined on opposite faces (sides) of the block when the indication from one hole affects the indication from another.

Article 4, Appendix IX Revision Added Article 4 Mandatory Appendix IX - Widespread, successful usage of Code Case 2235 to permit ultrasonic examination in lieu of radiography resulted in an interest in incorporating the Code Case into Section I and Section VIII, Divisions 1 and 2. To facilitate incorporation, the ultrasonic procedure qualification requirements of Code Case 2235 have been added to Section V Article 4 as new Mandatory Appendix IX.

Article 4, Appendix O Revision Added Article 4 Nonmandatory Appendix O - Added Article 4 Nonmandatory Appendix O "Time of Flight Diffraction (TOFD) Technique General Examination Configurations" for frequency selection , probe size, probe refracted angles and probe center spacing for typical welds. This Appendix provides the user recommended parameters which should yield optimized results in many cases. Applications for thick welds (more than 3 inch (75 mm)) using multiple TOFD probe pairs are included.

Article 4, Appendix VI Revision Added Appendix VI - E-Scan and S-Scan Techniques - Article 4, Mandatory Appendix VI was added to bring the E-Scan and S-Scan phased array linear scanning technique requirements of Code Cases 2599 and 2600 into the Code.

Article 4, T-420 Revision Added References in T-420 to Mandatory Appendices III and IV - The references were added to be consistent with the practice for each Article to provide appropriate references to its Appendices.

Article 4, T-434.1.7, T-434.3

Revision Revised T-434.1.7 and T-434.3. - For non -piping components and welds, curvature and thickness tolerance variations are allowed. With this revision, the same tolerance variations were afforded to piping calibration block design considerations. Similar allowances to piping calibration block design have been established to more closely align the requirements for non-piping and piping components and welds.The requirements for piping weld calibration block curvature and thickness tolerances, where none were previously provided for, wererevised to more closely align with those for non-piping (vessel) weld calibration blocks. An aligning Code Case 2638 - "Alternative Piping Calibration Blocks" - wasalso adopted for implementation.

Article 4, T-472, T-491.2 Revision Added References to Nonmandatory Appendices D, I, K and L . - (1) Article 4; T-472 and T-491.2 - Added references to Nonmandatory Appendices D, I, and K;(2) Article 4, Mandatory Appendix III; III-486 - Added reference to Nonmandatory Appendix L.

Article 4, T-474 Revision Revised T-474 - Clarifies that reflectors both parallel and transverse to the weld axis are required to be detected by non-distance amplitude techniques .

Article 5, Appendix II-531.4(b)

Revision Revised Article 5 Mandatory Appendix II-531.4(b) - The requirement for circumferential notches or cracks in calibration blocks was eliminated, A technical change was inadvertently added for nozzle examination calibration blocks requiring the placement of circumferential notches or cracks within the nozzle innerradii examination volume. The committee concluded there was no rationale to add this requirement and has revised Article 5, Mandatory Appendix II to be consistent with the requirements for ultrasonic examination of nozzle inner radii in the 2001 Edition of Section V prior to reformatting Article 4 and Article 5.



Article 6, T-675.3 Revision Revised T-675.3 - Added title "Developing Time" to T-675.3 to be consistent with other titled paragraphs.

Article 6, T-675.3, T-676.1, Table T-662

Revision Revised T-675.3, T-676.1 & Table T-662 Interpretation Times - The first sentence of T-676.1 previously stated: “Final interpretation shall be made within 10 to 60 minafter the requirements of T-675.3 are satisfied”. T-675.3 stated in the last sentence“The minimum developing time shall be as required in Table T-672.” Table T-672 had a 10 min time required for all materials. The previous wording could have been interpreted that the total minimum development time was 20 min rather than 10 min, (the 10 min from T-675.3 and the table plus the 10 min from T-676.1). T-676.1 was revised to clearly indicate a 10 minute interpretation time and it was removed from Table T-662. The maximum interpretation time was clarified as 60 min. In Table T-662 the "Developer Dwell" column was deleted. Changes were also made to add "Brazed and Welded" to "Carbide Tipped Forms" and delete "(all forms)" from "Wrought Materials".

Article 7, Appendix IV Revision Revised Article 7 and Added Mandatory Appendix IV - Article 7 was revised to implement "blue light" examinations . Changes were made to T-761.2, and T-765.3to change "black" to "fluorescent excitation". Changes were also made to T -777.2 to add "Black Light" to title. T-777.3 was added to make rules for examination with alternate lighting. Mandatory Appendix IV was added to Article 7 for allowing an alternate method of obtaining fluorescent magnetic particle indications using methods other than "black light".The appendix was developed to qualify the use new generic light sources other than "black light" ( ultraviolet).

Article 7, T-720 Revision Revised T-720 Description of MT Method - Carified the capability of the magnetic particle (MT) method as described in T-720 to detect subsurface defects.

Article 24 Revision Adopted ASTM D 1552-07 as SD-1552. - ASTM D 1552-07, "Standard Test Method for Sulfur in Petroleum Products (High-Temperature Method)" was adoptedas SD-1552 to replace ASTM D 1552-03.

Article 24 Revision Adopted ASTM D 129-00 (R 20056) as SD-129 - ASTM D 129-00 (R 2005 ) "Standard Test Method for Sulfur in Petroleum Products (Bomb Method) was adopted as SD-129. Replaced SD -129 (ASTM D 129-00).

Article 29 Revision Adopted ASTM E1211-07 as SE-1211 - ASTM E1211-07, "Standard Practice for Leak Detection and Location Using Surface-Mounted Acoustic Emission Sensors" was adopted as SE-1211 to replace ASTM E1211-02.

Code Case 2275 Revision Annulled Code Case 2275 - Code Case 2275 "Evaluation of Nonrelevant and Geometric Reflectors" is more than 12 years old and no longer necessary due to changes in Section V Articles 4 and 5. The Code Case was annulled on September 28, 2009 (Supplement 11).

Subpart/Table: Subsection B






9th & 11th Paragraphs Revision Elimination of Addenda - ASME took action in late 2009 to eliminate issuance of Addenda to the Boiler and Pressure Vessel Code. These revisions to the 9th and 11th paragraphs in the Foreword eliminated any reference to Addenda to the Code. Addenda will be published in July 2011 , and this will be the last Addenda published for the Boiler and Pressure Vessel Code.

Table of Contents Errata Errata - (1) In several locations in the "Part UHX" Table of Contents, the phrase " Thin-Walled" was replaced with "Bellows", and "Thick-Walled" was replaced with "Flanged-and-Flued or Flanged-Only".(2) In the Table of Contents listing for "Mandatory Appendices, Appendix 5", the phrase "Flanged and Flued or Flanged Only" was replaced with "Flanged-and-Flued or Flanged-Only".(3) In the Table of Contents listing for" Mandatory Appendices, Appendix 26", the phrase "Pressure Vessel and Heat Exchanger" was replaced with "Bellows ".

Table U-3 Errata Errata - The Year/Edition for ASNT CP-189 was corrected from "1995" to "2006 ". The Year/Edition for ASNT SNT-TC-1A was corrected from "2001 " to "2006 ".

Table U-3 Revision Updated Reference Standards - The following reference standards were updatedor deleted in Table U-3:ANSI/ASME B1.20.1 1983 (R2006 )(1)ASME B16.9 2007ASME B16.11 2005ASME B16.20 2007ASME QAI-1 2005ANSI/ASNT CP-189 1995ASTM E 8 DeletedASTM E 83 DeletedASTM E 140 2002-2007ASTM E 208 2006

Figure UG-118 Revision Corrections to Namplate Marking - The words "Pressure" and "Temperature" were placed within parentheses to clearly indicate that they are not required to be marked on the nameplate. Also the abbreviation "MAEWP" was added to the General Note, making the use ofthis abbreviation clearly acceptable for external pressure ratings when they apply.

Code Book: VIII-1

Part:



Subpart/Table: Introduction


Subpart/Table: Part UG




Figure UG-28.1, UG-33 Revision Line of Support for Cone-Cylinder Junction - Revised Fig. UG-28.1 and paragraphUG-33 to make the rules in UG-33 in line with the rules in UG-28 by clarifying that, when the cone-to-cylinder juncture is not a line-of-support, moment of inertia requirements in Appendix 1-8 need not be met provided the nominal thickness of the cone section is not less than the minimum required thickness of the adjacent cylindrical shell. When a knuckle is not provided, the reinforcement required by Appendix 1-8 shall be satisfied. When the cone-to-cylinder juncture, with or without a knuckle, is a line-of-support, rules in UG-33(f) shall be met, i.e., both moment of inertia and reinforcement requirements of Appendix 1-8 shall be met.

UG-11(c)(5) Revision Miscellaneous Parts - Fabrication Requirements - The purpose of this revision is to remind the Manufacturer that when purchasing miscellaneous parts with or without welding, these parts must satisfy all applicable fabrication requirements inthe Code. The specific example given in this addition to paragraph UG-11(c)(5) concerns the need to perform a treatment after cold forming of parts. Reference is made to paragraphs UCS-79(d), UNF-79(a)(1), UHA-44(a), and UHT-79(a)(1).

UG-16(b)(5)(d),Code Case 2626

Addition Removed 500 psi [3.5 MPa] limit for tubes in air cooled H/X - Paragraph UG-16(b)(5) provides an exemption from the 1/16 inch [1.5 mm] minimum thickness rule for tubes in air cooled and cooling tower heat exchangers. When this exemption was added to Section VIII, Division 1, a 500 psi [3.5 MPa] design pressure limit was imposed. This design pressure limit was a carryover from when this rule was originally published as a Code Case. Since there is no technical justification for this limit, the committee removed the 500 psi [3.5 MPa] limit from this paragraph and enabling Code Case 2626 was also approved.

UG-19(a), UG-116(j)(1), UG-120(b), UHX-19.2.1,UHX-19.3 Table W-3 Note 52

Revision Mean Metal Temperature Design for Common Elements in H/X - This revision clarifies rules concerning the design of common elements subject to differential pressure and mean metal temperature design.(1) The paragraph numbering for UG-19 was changed assigning UG-19(a)(1) to the paragraph titled " Common Elements"; subsequent paragraphs were renumbered.(2) In Paragraph UG-19(a)(3), the rule governing mean metal temperature design was corrected to state that when designing a common element based on mean metal temperature design, the design temperature must be less than the greater of the maximum design temperatures of its adjacent chambers; however it shall not be less than the lower of the maximum design temperatures of its adjacent chambers. (3) Restructured the marking requirements in UG-116(j)(1) for pressure chamberssubject to either differential pressure design or mean metal temperature design, or both. In addition the references back to paragraph UG-19 were revised.(4) Revised the instructions for recording differential pressure design and mean metal temperature design on the data report in paragraph UG-120(b).(5) Corrected the paragraph references in UHX-19.2.1, and removed "and/or" in UHX-19.3.(6) As part of this action, Interpretation VIII-1-04-68 was revised to be consistent with the clarification made to UG-19(a)(3).(7) Table W -3 Note 53 - Reference to "UG-19(a)(1)" and "UG-19(a)(2)" was corrected to 'UG-19(a)(2)" and "UG-19(a)(3)".



UG-36 Revision Discrepancy Between UG-36 & Appendix 1-10 - The rules in Appendix 1-10 “Alternative Method for Design of Reinforcement for Large Openings In Cylindrical Vessels Under Internal Pressure”, are based on the pressure-area method of calculation, similar to what is used in the current Section VIII, Division 2. This method of calculating reinforcement often results in a reduced amount of reinforcement for a given finished opening size. The problem being corrected with this revision is that when Appendix 1-10 was introduced into Section VIII, Division 1, the reference to this paragraph from UG-36 was written in a way that still also required the area replacement calculations of UG-37. That was not the intent, and once this problem was identified, an Intent Interpretation was approved and a revision made to this paragraph. As part of this revision, a introductory paragraph was added to Appendix 1-10 establishing the scope and applicability for applying these alternative reinforcement calculation method.

UG-45 Revision Simplification of Nozzle Sizing Rules - Paragraph UG-45 is often considered one of the more difficult Code paragraphs to understand. UG-45 establishes the minimum required thickness for nozzle necks and inspection openings, and what often challenges Code users is the fact that the thickness of a nozzle neck is not only a function of pressure and other loads acting on it, but also consideration of the thickness of the shell or head into which the nozzle is installed, as well as the minimum thickness of standard wall pipe. Paragraph UG-45 has been presented in a couple of different formats over the years, but in the 2007 Edition of Section VIII, Division 2 the nozzle neck sizing rules were presented in a simpler form making use of mathematical min/max expressions instead of excessive text. This revision to UG-45 duplicates the presentation utilized in Section VIII, Division2 for sizing nozzle necks. THIS REVISION IS STRICTLY A NEW PRESENTATION OF THE RULES; THERE ARE NO TECHNICAL CHANGES TO UG-45.

UG-79(a) Revision Forming Shell Sections and Heads - The first sentence of UG-79(a) was deleted because the committee considered the phrase "by any process that will not undulyimpair the physical properties of the material" to be ambiguous and unenforceable.

UG-80(b)(10), UG-80(c) Revision Tolerance on Pipe and Tube - The previous provision of UG-80(b)(10) provided a tolerance waiver for vessels under external pressure made from pipe. This paragraph allowed the use of pipe under external pressure if the tolerance satisfied the material specification but exceeded the tolerance of UG-80. This waiver did not apply to internal pressure or tube material. Paragraph UG-80(b)(10) was deleted and its provisions covered in new paragraph UG-80(c).UG-80(c) - This action will allow vessels and vessel components under internal or external pressure to be fabricated from pipe and tube product forms with permissible variations in diameter in accordance with the specified material specification if they exceed the requirements of UG-80. For example, when using SA-106 pipe for the shell of a vessel, the OD tolerance given in the pipe specification may be used in lieu of the out-of-roundness tolerances given in UG-80(a) and UG-80(b).



UG-99(b), UG-100(b) Revision Bolting material allowable stress calculation - In Section VIII, Division 1, the valueof the hydrostatic or pneumatic test pressure is not only a multiple of the MAWP stamped on the nameplate, but also considers all of the materials which make up the pressure vessel and more specifically the ratio of the material allowable stressat its test temperature to the allowable stress value at its design temperature (stress ratio). The lowest stress ratio (LSR) is then multiplied times the MAWP andthe test multiplier (1.3 for a hydrostatic test per UG-99) to determine the minimum test pressure. The change that took place in the 2010 Edition was to eliminate bolting from consideration as material in the determination of the LSR. This change was made since the allowable stress for many commonly used carbon steel and low alloy bolting materials (such as SA-193 Grade B7) does not change at temperatures less than 750°F, whereas the allowable stress does change for most plate and forging materials. The net result is that for many vessels with carbon and low alloy steel bolting, the bolting controls the test pressure and results in a test pressure that is lower than one that would be based on the plate and forging materials in the vessel. This means that the components fabricated from plate and forgings would not achieve the desired stress level during the hydrostatic test relative to its allowable stress at the design temperature. There is one exception concerning consideration of bolting in the determination of the LSR. If 1.3 times the LSR multiplied by the allowable stress of the bolt at its design temperature exceeds 90% of the bolt material specified minimum yield strength at the test temperature, then the bolting stress ratio must be considered in the determination of LSR. THIS IS A SIGNIFICANT CHANGE THAT WILL AFFECT THE HYDROSTATIC AND PNEUMATIC TEST PRESSURE FOR VESSELS UTILIZING CARBON AND LOW ALLOY STEEL BOLTING, AND WITH DESIGN TEMPERATURES GREATER THAN 650°F (345°C).

UG-101(j)(1) Revision Deleted Reference to ASTM E8 - As part of an overall effort to keep references to other standards and specifications up to date, the reference to ASTM E8 ("Tension Testing of Metallic Materials") was deleted from UG-101(j )(1), thereby relying on the accuracy of the reference specifications given in the applicable material specification.

UG-117(a)(3)(a), UG-117(f), Footnote 41, Appendix DD

Revision Mass Produced Vessels - When Appendix 35 (Rules for Mass Production of Pressure Vessels) was published in the 2008 Addenda, the term "multiple duplicate" was replaced with "mass produced". This revision replaces "multiple duplicate" with "mass produced" in three places in in UG-117, and in Appendix DD.

UG-129(a)(3), UG-129(a)(5)(a), UG-129(a)(5)(c), UG-129(a)(7), UG-129(h), UG-131(b)(2)

Revision Use of Metric Units on PRD Nameplates - These revisions incorporate the provisions of Case 2116-2 whereby rules were provided to solely use metric units on pressure relief device (PRD) nameplates . New paragraph UG-129(h) makes reference to paragraph U-4 which contains rules for addressing the use of alternate units. Also an editorial correction was made to UG-131(b)(2) where the alternate SI temperature listed for 125°F was corrected to 50°C. Note Case 2116 was scheduled to be annulled January 1, 2010.

UG-129(a)(8), UG-131(e)(1), UG-133(h), UG-136(a)(11), UG-136(c)(4)(b)(5)

Revision Incorporation of Code Case 1945-4 Restricted Lift Code Cases - This revision incorporates the provisions of Case 1945-4 which allows a valve manufacturer or assembler to restrict the lift of a safety valve to provide a capacity less than that given by the equations in UG-131(e)(2).



UG-133(g) Revision Prorated Relieving Capacity - UG-133(g) provides a method for determining the relieving capacity of a pressure relief device at pressures greater than 110% of its set pressure. However, the methodology applies only to compressible fluids where the flow capacity is linearly proportional to the absolute relieving pressure. The methodology is not appropriate for incompressible flow where the relieving capacity is proportional to the square root of the pressure drop across the valve. The paragraph was revised to limit prorating the relieving capacity to compressiblefluids.

UG-136(c)(3), UG-137(c)(3)

Revision Capacity Certification Interval - The pressure relief device certification interval wasrevised from five (5) to six (6) years in order to synchronize with the ASME three (3) year audit schedule.

UG-136(c)(4)(c) Revision Pressure Relief Valve Conversion Activity - The provisions of Case 2208 "Corrosion Resistant Coating of Pressure Relief Valves by Assemblers" were incorporated into Section VIII, Division 1 in the 2006 Addenda. When this took place, some of the requirements from the case were incorrectly incorporated into Section VIII, Division 1. The deletion of paragraphs UG-136(c)(4)(c) corrects this mistake.

UG-136(d)(2)(a), UG-136(d)(2)(d) & (e), UG-137(d)(2)(e)

Revision Pressure Tests of Pressure Relief Valves - Significant changes to the hydrostatic pressure test requirements of pressure relief valves were made in the 2007 Edition of Section VIII, Division 1. The intent of these changes was to expand the test requirement to include the valve shell exposed to the secondary or outlet pressure. However the words in UG-136(d)(2)(a) stated: The pressure containing parts of each valve shall be hydrostatic tested.....", which has been interpreted to mean that not only are the valve body, bonnet and cap required to be pressure tested, but also internal parts such as a disk, semi-nozzle, liner or piston. This was not the intent, and this revision to UG-136(d)(2)(a) clarifies that the hydrostatic test shall be performed on the pressure containing parts of the shell of each valve, where the valve shell is defined as parts such as the body, bonnet, and cap. Consistent with this change, paragraph UG-136(d)(2)(d) & (e) were deleted. Finally, a similar revision was made to UG-137(d)(2)(e) whereby it was clarified that for rupture disk devices, holder components fully contained within the holder are exempt from hydrostatic testing.

Figure UW-16.2 Revision Correct Reference in Fig. UW-16.2 - Fig. UW-16.2 contains details of fittings attached by either single fillet welds or groove welds in accordance with the rules given in UW-16(f). A reference in General Note at the bottom of the figure was corrected to read UW-16(f) instead of UW-16(f)(3)(a).

Subpart/Table: Part UW




UW-2 Revision ERW use in Unfired Steam Boilers - If a Manufacturer wishes to use electric resistance welded (ERW) pipe as the shell of an unfired steam boiler under the rules of Section VIII, Division 1 UW-2(c), there are no prohibitions against such use. However, one can make a reasonably strong case against such use by carefully assembling selected Interpretations, on the basis of the ERW weld seambeing classified as a Category A weld joint, and the premise that radiography of ERW weld seams is not acceptable. After much debate , it was decided to align Section VIII rules for use of ERW pipe in an unfired steam boiler with the limitations specified in PG-9.5 of Section I. This revision removes an inconsistency that has existed between Section I and Section VIII when a Section VIII vessel is used on a Section I (“E” stamped) electric boiler. Prior to this revision,a Section VIII Manufacturer could not use ERW pipe for the shell of a Section I electric boiler, even though it would be permitted under Section I rules. When ERW pipe is used as a shell for an unfired steam boiler, its thickness shall not exceed 1/2 inch (13 mm), its diameter shall not exceed 24 inches (DN 600), and the ERW weld shall be completed using high-frequency (HFI) welding.

UW-16(c)(2)(a), (b), (c), and (d)

Revision Nozzle Reinforcement Element Attachment Welds - On some vessels, the attachment weld of a reinforcing pad sometimes crosses a circumferential seam in the vessel. When this happens, the Manufacturer does not have the option to interrupt this attachment weld at the circumferential seam. The intent of the Code has always been that the reinforcement pad attachment welds be continuous around the entire circumference of the pad. To clarify this point in the Code, the word "continuous" was added to the phrase " fillet weld" in UW-16(c)(2)(a), (b), (c) and (d) .

UW-16(g)(2)(a), UW-16(g)(2)(b)(2), Figure UW-16.3

Revision Max Opening for Small Bolting Pad - UW-16(g)(2)(a) was revised to state that a bolting pad attached to a vessel by a fillet weld deposit from the outside only shall not have a diameter greater than 4 3/4 inches (120 mm).UW-16(g)(2)(b)(2) was revised to state that the maximum size of the opening in thevessel is limited to 1/4 inch (6 mm) less than the bolting pad diameter for those that are attached to the outside of the vessel.Figure UW-16.3 - This figure was revised to reflect the changes to the above paragraphs.

UW-20.7 Addition Tube-to-Tubesheet Welds in Clad Tubesheets - New paragraph UW-20.7 was added to provide rules for clad tubesheets when the tubes are to be strength welded to the cladding. The integral clad tubesheets must meet the shear strengthrequirements of SA-263 and the ultrasonic examination requirements of SA-263, Quality Level Class 1 when the tubes are to be full or partial strength welded to the cladding of integral clad tubesheets. These requirements would apply to integral clad tubesheets made up of any combination of clad and based materials, not justthose covered by SA-263. The shear strength test and ultrasonic examination are not required for weld metal overlay clad tubesheets.

UW-21(b) Revision ASME B16.5 Slip-On Flange Weld Details - The word "fillet" was deleted from UW-21(b) since ASME B16.5 slip-on flanges may be attached with either internal and external fillet welds, or a combination of fillet weld and groove weld.

UW-21(b), Figure UW-21 Errata Errata - (1) Figure UW-21 - In the definition of "x [sub min]", "1.4t [sub min]" was corrected to "1.4t [sub n]". Also, the dimension "t [sub n]" was added to Sketch (4).(2) UW-21(b) - The word "fillet" was deleted in the second line, since ASME B16.5 slip-on flanges can be attached using external fillet welds or partial groove welds.



UW-40(a), UW-40(a)(8) Revision Local Postweld Heat Treatment - Local postweld heat treatment rules have been in UW-40 since the 1998 Addenda. This revision adds a reference to Welding Research Council (WRC) Bulletin 452 "Recommended Practices for Local Heatingof Welds in Pressure Vessels" to UW-40(a). This WRC Bulletin provides recommendations regarding implementation and performance of local heat treating. Copies of the Bulletin can be purchased at: http://www.forengineers.org/index.html. In paragraph UW-40(a)(8), the terms "spots" or "bulls eye" were added to the first sentence.

Table UCS-23, Figure UCS-66

Revision Adoption of EN 10028-2: 2003 Grade P355GH - Grade P355GH has been adopted for use under SA/EN 10027-2. This material is considered a near equivalent to SA-516 Grade 70. Also the Notes to the Material Assignment Table for the Impact Test Exemption Curves were updated, assigning EN/SA 10028-2 Grade P355GH as rolled to Curve B, and if normalized to Curve D.

UCS-56(d)(2), Table UCS-56

Errata Errata - (1) Para. UCS-56(d)(2) - The temperature limit "250°F (120°C) " was corrected to "250°F (140°C)".(2) Table UCS-56 P-No. 10A, Note (4) - The heating rate 50°F (10°C)/hr was corrected to 50°F (28°C)/hr".(2) Table UCS-56 P-No. 10C, Note (4) - The heating rate 50°F (10°C)/hr was corrected to 50°F (28°C)/hr".(3) Table UCS-56 P-No. 10F, Note (2) - The heating rate 50°F (10°C)/hr was corrected to 50°F (28°C)/hr".

Table UNF-23.4 Revision Titanium Aluminum Vanadium Ruthenium Alloy - Incorporate Code Case 2425 -2 allowing use of wrought Grade 28 titanium alloy ["Titanium Aluminum Vanadium Ruthenium Alloy"] Ti-3Al-2.5V-0.1Ru, (UNS R56323) to 600°F

Subpart/Table: Part UCS


Subpart/Table: Part UNF




UNF -79(a)(2)(d), UNF -79(b), Table UNF -79, Figure UNF-79

Revision Deletion of Strain Eqs. for Tube & Pipe Flares - (1) UNF-79 contains requirements for post-fabrication heat treatment due to straining when pressure-retaining components manufactured austenitic alloys are cold formed and are intended for operation at elevated temperatures. Equations are provided for estimating the maximum strain in pipe or tube flares, swages , or upsets , and the strain limits are arbitrarily set at one half of these calculated strain values. This simple approach to estimating the strain has been brought into question recently due to some recent failures after only 100 hours of service of some austenitic stainless steel superheater tubing. The decision was made to delete the rules in UNF-79(a)(2)(d) and to require mandatory post-fabrication heat treatment for all tube and pipe flares, swages, and upsets that are cold formed and exceed the design temperature limits given in Table UNF-79.(2) General Note (b) concerning flares, swages and upsets was deleted from Table UNF-79.(3) Figure UNF-79, containing illustrations of flaring, swaging, and upsetting of tubing, was deleted.(4) UNF-79(b) was revised to state that for flares, swages, or upsets , heat treatment in accordance with Table UNF-79 shall apply, regardless of the amount of strain.

Table UHA-23 Revision Deleted Reference to SA-312 & SA-479 UNS S31277 - Reference to UNS S31277was deleted as it is no longer in the material specifications for SA-312 and SA-479.

Table UHA-44 Errata Errata - In Note (2) to Table UHA-44, the temperature limit " [250°F (120°C)]" wascorrected to "[250°F (140°C)]".

UHA-44(a)(2)(d), UHA-44(b), Table UHA-44, Figure UHA-44

Revision Deletion of Strain Equations for Tube & Pipe Flares - (1) UHA-44 contains requirements for post-fabrication heat treatment due to straining when pressure-retaining components manufactured austenitic alloys are cold formed and are intended for operation at elevated temperatures. Equations are provided for estimating the maximum strain in pipe or tube flares, swages , or upsets , and the strain limits are arbitrarily set at one half of these calculated strain values. This simple approach to estimating the strain has been brought into question recently due to some recent failures after only 100 hours of service of some austenitic stainless steel superheater tubing. The decision was made to delete the rules in UHA-44(a)(2)(d) and to require mandatory post-fabrication heat treatment for all tube and pipe flares, swages, and upsets that are cold formed and exceed the design temperature limits given in Table UHA-44.(2) General Note (b) concerning flares, swages and upsets was deleted from Table UHA-44.(3) Figure UHA-44, containing illustrations of flaring, swaging, and upsetting of tubing, was deleted.(4) UHA-44(b) was revised to state that for flares, swages, or upsets , heat treatment in accordance with Table UHA-44 shall apply, regardless of the amount of strain.

Subpart/Table: Part UHA




UHA-51(a)(4)(b), UHA-51(a)(4)(b)(2), UHA-51(a)(4)(b)(3), UHA-51(f)(4)(a) & (b)

Revision High Alloy Impact Test Requirements - (1) In UHA-51(a)(4)(b), the phrase " when the base metal, weld metal, or filler metal are unable ..." was corrected to: " when the base metal, weld metal, and heat affected zone are unable...". Note that "affected" is misspelled in the 2010 Edition.(2) UHA-51(a)(4)(b)(2) - "130 MPa sqrt (m)" was corrected to "132MPa sqrt (m)".(3)UHA-51(a)(4)(b)(3) - The phrase "each heat or lot of filler metal" was corrected to "each heat or lot of austenitic stainless steel filler metal".(4) UHA-51(f)(4)(a) & (b) - The sentence " Test coupons shall be prepared in accordance with Section II, Part C, SFA-5.4, A9.12." was corrected to read: "Test coupons shall be prepared in accordance with Section II, Part C, SFA-5.4, A9.3.5 utilizing the WPS to be used in production welding.".

UHT-6(b), UHT-17(b), UHT-18(c), Table UHT-23, UHT-28(b)

Revision SA-645 changed to SA-645 Grade A - The ASTM 2005 Edition of A 645/A 546M-05 changed the designation of the 5% Ni steel to Grade A and added a new 5½% Ni steel as Grade B. The update of SA-645 in Section II, Part A, requires the change of5Ni-¼Mo steel to SA-645 Grade A in Section II, Part D tables ; in Section VIII, Divisions 1 and 2; in Section IX, and in Section XII. SA-645 GRADE B HAS NOT YETBEEN ADOPTED BY ANY BPV CONSTRUCTION CODE.

Table ULT -23 Revision SA-645 changed to SA-645 Grade A - The ASTM 2005 Edition of A 645/A 546M-05 changed the designation of the 5% Ni steel to Grade A and added a new 5½% Ni steel as Grade B. The update of SA-645 in Section II, Part A, requires the change of5Ni-¼Mo steel to SA-645 Grade A in Section II, Part D tables ; in Section VIII, Divisions 1 and 2; in Section IX, and in Section XII. SA-645 GRADE B HAS NOT YETBEEN ADOPTED BY ANY BPV CONSTRUCTION CODE.

UHX-13 and UHX-14 Revision Maximum tube joint load comparison has been added. - Revisions to the fixed and floating tubesheet rules of UHX-13 and UHX-14 added requirements to compare the largest tube-to-tubesheet loads calculated per UHX to the maximum loads permitted per UW-20, UW-18(d) or Appendix A, as applicable. New paragraphs UHX-13.5.9(b) and UHX-14.5.9(b) were added.

Subpart/Table: Part UHT


Subpart/Table: Part ULT


Subpart/Table: Part UHX




UHX-13.5.12, UHX-13.7.1, UHX-13.7.2, UHX-14.5.11, UHX-14.8

Revision Added elastic-plastic rules for floating tubesheets - This action is to add elastic-plastic calculations for floating tubesheets in both Division 1 and Division 2by making the following changes:(1) Remove conditions of applicability listed in UHX-13.5.12, Option 3. Clarified reference to the conditions of applicability listed in UHX-13.7.2. (2) Replace "Young's modulus" with "Modulus of Elasticity" in UHX-13.7.1 in two places.(3) Add option 3 to UHX-14.5.11 to inform the reader about the elastic-plastic option for floating tubesheets.(4) Add in new paragraph UHX-14.8 to show the floating tubesheet elastic-plastic calculation procedure.

UHX-20 Revision Updated fixed tubesheet examples - The examples for fixed tubesheets have been updated for the UHX-13 procedure given in the 2008 Addenda.

UIG-7, UIG-29, UIG-95,UIG-97(c), UIG-121

Revision Corrections to Impregnated Graphite Rules - Numerous revisions were made to Part UIG, representing editorial changesas well corrections:Introduction - The word "shall" was replaced with "should" in three places since this paragraph is meant for information only.UIG-7 - ASTM references [ ASTM C-747 and C-769] for determining the modulus ofelasticity of graphite were added.UIG-29 - A rule was added to estimate the material yield strength from the tensile strength value determined in UIG-84. The material yield strength is needed to evaluate graphite tubes per UHX-14.5.9(b) calculations. UIG-95(a) - The word "inspected" was replaced with "examined" to reflect an activity carried out by the Manufacturer.UIG-95(c) - Editorial revisionUIG-95(d) - New paragraph adds examination requirements for cemented nozzles.UIG-121 - Records of visual examination were added to the list of documents required to be stored by the Manufacturer for five (5) years.

1-4(f)(1)(d) Revision Clarification of Units for Angles Phi and Beta - Added unit in radians to equations in Appendix 1, Paragraph 1-4(f)(1)(d)

1-7(b), 1-7(c) Revision Clarification of rules when Rn/R > 0.7 - This revision involves reformatting paragraph 1-7(b) to improve its clarity. The other change involved removing the reference to 1-7(c) in para. 1-7(b)(1)(c) since the requirements of 1-7(c) apply anytime Appendix 1-7 is applicable. Finally 1-7(c) was rewritten. This paragraph does not contain any mandatory requirements, but instead contains recommendations on what the Manufacturer should consider when fabricating a vessel containing large openings. The paragraph was editorially updated, and a recommendation to substitute MT or PT when RT cannot be performed was removed, since the appropriate NDE required for large openings should be based on service conditions and the specific application. The user and Manufacturer should agree on the extent of NDE that should be applied to the large opening.

Subpart/Table: Part UIG






1-10 Revision Discrepency Between UG-36 & Appendix 1-10 - The rules in Appendix 1-10 “Alternative Method for Design of Reinforcement for Large Openings In Cylindrical Vessels Under Internal Pressure”, are based on the pressure-area method of calculation, similar to what is used in the current Section VIII, Division 2. This method of calculating reinforcement often results in a reduced amount of reinforcement for a given finished opening size. The problem being corrected with this revision is that when 1-10 was introduced into Section VIII, Division 1, the reference to this paragraph from UG-36 was written in a way that still also requiredthe area replacement calculations of UG-37. That was not the intent, and once thisproblem was identified, an Intent Interpretation was approved and a revision madeto this paragraph. As part of this revision, a introductory paragraph was added to Appendix 1-10 establishing the scope and applicability for applying these alternative reinforcement calculation method.

12-2 Revision Certification Requirements for UT Examiners - Deleted the NDE personnel qualification and certification requirements for UT examiners from Appendix 12-2, and inserted a reference to those requirements in UW-54. This revisions restores consistency in Section VIII, Div.1 relative to the need to verify that an NDE examiner's qualifications meet Code requirements.

2-3 Revision Definition of Bolt Spacing - Revised the definition of the Bolt Spacing term (Bs) in Appendix 2, Paragraph 2-3 (Notation) to read: "The bolt spacing may be taken as the bolt circle circumference divided by the number of bolts or as the chord length between adjacent bolt locations."

2-3, 2-5, 2-6, 2-7 Revision Bolt Spacing Correction Factor - A check on bolt spacing and use of a correction factor based on Taylor Forge Bulletin 502 has been added to Section VIII, Div. 1. This check is required for vessels in lethal service (see UW-2(a)) or when specified by the user or his designated agent. The addition of the correction factor will ensure proper gasket compression when very few bolts are used to satisfy the Code requirement for bolt cross-sectional area. THIS IS A MAJOR CHANGE FOR VESSELS IN LETHAL SERVICE.

23-4 Revision Pressure Limitations for Copper and Titanium Tubes - Appendix 23 contains alternative rules to UG-8 and UG-28 for establishing the external pressure rating for tubes with integral helical fins based on a proof test. The rules in Appendix 23 were initially created from the incorporation of several Code Cases, which had set a limit on the maximum external pressure that could be established via the proof test. The Committee has concluded that there is no technical justification for thesepressure limits , and therefore the 700 psi limit on copper and copper alloy tubes, and the 3,500 psi pressure limit for titanium tubes have been deleted.

32-4 Revision Limit on LTA Size - Appendix 32 contains rules for accepting a local thin area (LTA) with no reduction in the MAWP for the vessel. The limit on the circumferential extent of the LTA was changed from "2L" to Sqrt[rt], which will allow greater variability in the size of the LTA, since this limit will no longer be tied to the axial length of the LTA.

Appendix 26, Various Paragraphs

Errata Errata - (1) Para. 26-14.1.1 - The spelling of "expansion" was corrected in the thirdsentence.(2) Para. 26-14.1.2(f) - The reference to "Figures 26-6.1 through 26-6.3" was corrected to "Figures 26-4 through 26-6".(3) Para. 26-14.1.2(m)(3) - In the Equation for P [sub si], the number " 1.02" was correct to " (pi -2); The result "183 psi" was corrected to "204 psi".(4) Para. 26-14.2.2(h) - The reference to "Figures 26-6.1 through 26-6.3" was corrected to "Figures 26-4 through 26-6".



A-1 through A-5 Revision Allowable Load on Tube-to-Tubesheet Joints - Appendix A was reviewed for clarification and improvements, and following revisions were adopted:1) Editorial changes in A-1 through A-52) Deletion of all Footnotes (1 through 3) and incorporation into Appendix A main text as applicable.3) Extensive rewording of A-2 definitions for clarification4) In A-4, tensile strength for tube material is to be obtained from the material test report.5) Added ratio for tensile strength of tube material taken from Table U in Section II , Part D at test temperature and room temperature. Ratio is applied to the acceptance standards in A-5.

Appendix DD Revision Reorder Listing of Scope Statements - Appendix DD contains a guide to information appearing on a certificate of authorization. The listing of sample Scopestatements for the "U", "UM", "UV" and "UD" stamps were completely revised.

Appendix JJ, Figure JJ-1.2-6

Revision Editorial Correction to Flow Chart - In the block for UHA-51(d)(3), the word "and" was replaced by "or" since impact testing is required when either of the conditions are satisfied.

Appendix KK, Forms U-DR-1, U-DR-2

Revision Editorial Changes to Forms - Additional check boxes were added to make it easier for the owner/user to specify if any additional UG-22 loadings apply to the pressure vessel.

Appendix W, U-1 & U-1A Forms, Note 43

Revision Documenting Nozzles on MDRs - The Table in the Manufacturer's Data Report (MDR) to list nozzles, inspection and safety valve openings has been revised for consistency all the data report forms. The column that was labeled "Flange Type" was changed to "Type", and the corresponding Note 43 revised to read: " Data entries with description acceptable to the Authorized Inspector. For all types of nozzles, ...". Also, a socket weld nozzle was added to the list nozzle descriptions.

Case 1945-4 Revision Annulment of Case 1945-4 Restricted Lift of Safety Valve - Case 1945-4 , which restricted lift of safety valves, was annulled with the incorporation of its provisions into Section VIII, Division 1, 2010 Edition.







Case 2651 Addition Electric Immersion Heater Element Support Plates - Immersion heaters, including flange immersion heaters, typically use a perforated ASME B16.5 blind flange to support the electric heater elements. Under current Section VIII, Division 1 rules, because the B16.5 blind flange is modified (penetrations for heating elements) the pressure/temperature rating from B16.5 cannot be used, and the thickness of this blind flange would then be calculated using the rules of VIII-1. Traditionally these calculations are performed using the rules of UG-34 (flat plate thickness) and UG-39 (reinforcement of openings in a flat plate). However it knownthat this calculation approach is conservative, and that the perforated plate behaves more like a U-tube tubesheet and should be calculated using the methodology of Part UHX. The Subgroup on Heat Transfer Equipment developed special rules for the design of immersion heater element support plates, based upon the rules in UHX-12 for U-tube tubesheets. These new rules will be published in a Mandatory Appendix in VIII-1 in the 2011 Addenda. An early implementation Code Case, Case 2651 , has been approved for use, effective June 25, 2010. Note that some minor revisions were made to this Case, and Revision 1 (Case 2651-1) was approved for use on September 8, 2010 .




2.4.2 Revision Editorial Revision - The phrase "sovereign government" was replaced with "jurisdiction".

2.C-3.1.d.1 Revision Maintenance of Repair Records - This revision clarifies what repairs need to be recorded and the records maintained. The requirement to maintain a record of any repair to material was changed to read as follows: " ...and a record of any repairs to pressure retaining material that require radiographic examination by the rules of this Division. "

Forms A-1, A-2 Revision Editorial Corrections to Data Report Forms - The following corrections were made to the Manufacturer's Data Report Forms:Form A-1 (front) - Labels under Line Items 5 and 12; corrected spelling of "date" and "wld".Form A-1 (back) - Line Item 45 the units "psi" were deleted.Form A-2 (front) - Labels under Line Items 4,5 and 13 revised to correct typographical errors; spelling of "date" and "wld".Form A-2 (back) -Line Item 45 revised to note "part " rather than "pressure vessel".

Table 2.D.3 Revision UT In Lieu of RT - Section VIII, Division 2 permits both RT and UT for volumetric examination. This revision corrects data report forms A-1 and A-2 by replacing the phrase "Radiographic treatment" with " Nondestructive Examination" on Lines 15 and 16 of Form A1 and Lines 16 and 17 of Form A-2.

Code Book: VIII-2

Part:



Subpart/Table: Part 2


Subpart/Table: Annex 2.C


Subpart/Table: Annex 2.D




Table 2.H.1, Note 2 Revision Update Safety Valve Scope Statements - Additional UV Code Symbol Stamp scope statements were added to Table 2.H.1, Note 2 (Scope Descriptions 4., 5., and 6.) covering both manufacture and assembly of pressure relief valves at the location listed on the certificate, and also the manufacture of pressure relief devices.

3.11.2.2(a) Revision Mandatory Impact Testing for Thick Plates - The MDMT below which impact testing is mandatory for governing thickness greater than 100 mm (4 in.) was changed from 32°C (90°F) to 43°C (110°F). This change was necessary to obtain agreement between the observed behavior of the materials and the asymptotic limit of Curve A.

3.11.4.3 Errata Errata - (1) Para. 3.11.4.3.a.2 - The reference to "paragraph (a)" was corrected to "paragraph (1)".(2) Para. 3.11.4.3.a.3 - The phrase "Those types having a carbon content not exceeding ...." was corrected to "Those types having a carbon content exceeding ....".

3.2.6.1 Errata Errata - (1) Para. 3.2.6.1 - The paragraph Title was corrected to: "Certificate of Compliance and Material Test Report".

3.3.6.2 Revision Weld Metal Overlay Cladding - The current wording of paragraph 3.3.6.2 suggeststhat weld metal overlay cladding must meet the referenced specifications for clad plate in Section II. However, the referenced clad plate specifications are not applicable to weld overlay clad plate. The revisions made to 3.3.6.2 clarify the distinction between corrosion resistance integral cladding and weld metal overlay cladding and results in requirements that are identical to what was previously published in the 2004 Edition of Section VIII, Div. 2, and similar wording in Section VIII, Div. 1, UCL-23(c).

3.6.3.3.b & c Revision Editorial Revision - The phrase "approximate frequency" was corrected to "appropriate frequency" in paragraphs 3.6.3.3.b and .c .

Table 3.A.3 Addition Addition of SA-240 Type 255 - Material SA-240 Type 255 (UNS32550) was added for Division 2 construction via the incorporation of Case 2068-2. This material is already listed in Section IX as P-No, 10H, Gr-No. 1.

Table 3.A.3 Addition Addition of Type 630 (17Cr-4Ni-4Cu) Material - The following materials were added for Division 2 construction via the incorporation of Case 2277:(1) SA-693 Type 630 (UNS S17400) Plate, Sheet & Strip(2) SA-705 Type 630 (UNS S17400) Forgings(3) SA-564 Type 630 (UNS S17400) Bar

Subpart/Table: Annex 2.H




Subpart/Table: Annex 3.A




Table 3.A.6, Table 4.4.1 Revision Clean up references. - The Title to Table 3.A.6 was corrected from " Nonferrous Alloys " to " Nickel and Nickel Alloys ". Also references to Tables 3.A.1 through 7 were added to Table 4.4.1.

3.D.3, 3.D.6, Table 3.D.2 Revision Development of Stress Strain Curve - Several sentences were added to the last paragraph of 3.D.3 clarifying that the development of the stress strain curve shouldbe based on the use of true ultimate tensile strength at true ultimate tensile strain. An equation (3.D.13) was added for the calculation of the true ultimate tensile stress at true ultimate tensile strain. With the addition of Equation (3.D.13) the remaining Equations in the Chapter required renumbering. The variables "K" and "sigma [sub uts,t]" were added to the Nomenclature (3.D.6). The Heading "C [sub css]" was replaced by "K [sub css]" in Table 3.D.2.

3.F.1.2 Revision Correction to Design Fatigue Curve Equations - The variable, "C sub [us ]", which is a conversion factor to address when the units of stress is in ksi or MPa, was incorrectly used for both the smooth bar design fatigue curve equations and the weld joint design fatigue curve equations. The following revisions were made:(1) Equation 3.F.1: Corrected(2) Equation 3.F.2: Corrected(3) Inserted a new Equation 3.F.3 to define variable "Y".(4) Equation 3.F.7 (Renumbered to Eqn 3.F.8): Replaced variable "C [sub us]" with variable "C [sub usm]".(5) Paragraph 3.F.3 Nomenclature: Added variable "C [sub usm]" and definition and added variable "Y" and definition(6) Tables 3.F.11 and 3.F.11M: Corrected variable "deltaS [sub range]" to "deltaS [sub ess,k]" in Notes.

4.1.2.d.3 Revision Removed 500 psi [3.5 MPa] limit for tubes in air cooled H/X - Paragraph 4.1.2 provides an exemption from the 1/16 inch [1.5 mm] minimum thickness rule for tubes in air cooled and cooling tower heat exchangers. When this exemption was added to Section VIII, Division 2 a 500 psi [3.5 MPa] design pressure limit was imposed. This design pressure limit was a carryover from when this rule was originally published as a Code Case. Since there is no technical justification for this limit, the committee removed the 500 psi [3.5 MPa] limit from this paragraph and enabling Code Case 2626, was also approved.

Subpart/Table: Annex 3.D


Subpart/Table: Annex 3.F


Subpart/Table: Part 4.1




4.1.8.2, 4.18.14.3 Revision Mean Metal Temperature Design for Common Elements in H/X - This revision clarifies rules concerning the design of common elements subject to differential pressure and mean metal temperature design. Following is a summary of the changes:(1) The Title to paragraph 4.1.8.2 was changed from "Common Elements" to "Common Element Design". Also the rules describing the design of a common element for a differential pressure or mean metal temperature was editorially improved.(2) In paragraph 4.1.8.2.b, the the rule governing mean metal temperature design was corrected to state that when designing a common element based on mean metal temperature design, the design temperature must be less than the greater of the maximum design temperatures of its adjacent chambers; however it shall not be less than the lower of the maximum design temperatures of its adjacent chambers. (3) In 4.18.14.3, the reference to "4.1.8.1" was corrected to "4.1.8.2".

Table 4.1.1 Revision Addition of wave action in loads to be considered - Paragraph 1.2.1.2 b includes "Pressure vessels installed in ocean-going ships , barges, and other floating craft or used for motor vehicle or rail freight", in the Scope of of Section VIII, Division 2. However, this load was not assigned a Design Load Parameter. The revision to Table 4.1.1 assigned loads resulting from wave action to a "Design Load Parameter = L (Live Load)".

4.2.5.5.c.4 Revision Nozzle Reinforcement Pad Attachment Welds - On some vessels, the attachment weld of a reinforcing pad sometimes crosses a circumferential seam in the vessel. When this happens, the Manufacturer does not have the option to interrupt this attachment weld at the circumferential seam. The intent of the Code has always been that the reinforcement pad attachment welds be continuous around the entire circumference of the pad. To clarify this point, the word "continuous " was added to the phrase "attached by welds " in the second line of 4.2.5.5.c.4

Tables 4.2.10, 4.2.11, 4.2.13, & 4.2.14, 4.13.13

Revision Revise Nozzle Corner Radius Requirements - Nozzle inside corner radius requirements were revised to match Section VIII, Div. 1. The inside corner radius must be greater than or equal to the minimum of 1/4t and 3mm (0.125 in). The definitions for "r [sub 1]" and "r [sub 3]" were corrected in the Nomenclature in 4.13.13.





4.3, 4.4 Revision Corrections to Cone-to-Cylinder Junction Rules - These corrections bring the newcone-to-cylinder rules to be consistent with Code Case 2286 . One major change is the statement that if a stiffening ring is added to a cone-to-cylinder junction , then the junction must be designed per Part 5.(1) 4.3.11.4.f, 4.3.11.5.f, 4.2.12.2.e - Rules revised to allow calculating the higher allowable compressive stress at a cone-cylinder junction as provided in Code Case 2286 .(2) Eq. 4.3.54, 4.3.55, 4.3.67, 4.3.68 - Corrected variables.(3) 4.3.13 - Variables "sigma [sub theta(a)(m)]" and "sigma [sub sam ]" deleted in the Nomenclature.(4) 4.4.13.2 - The existing rules permitting the use of a stiffener at a cone-cylinder junction have been deleted and replaced with a requirement that if a stiffening ring is used in the cone-cylinder junction area defined in Figure 4.3.9, the design shall be per Part 5.(5) 4.4.7 - Eq. 4.4.55 was corrected; the "F [sub he]/F [sub y]" ratio was "flipped" in the denominator term for the calculation of "F [sub ic ]".THIS IS A MAJOR CHANGE THAT SHOULD BE CAREFULLY REVIEWED BY MANUFACTURERS.

4.3.13 Revision Define Variables in Nomenclature - Variable "P sub [a]", maximum allowable internal pressure of a torispherical head, was added to the Nomenclature . The definitions for variables "P [sub ac]", "P [sub ak]", "P [sub ck]", and "P [sub eth ]" were corrected, and the variable, "P [sub ah]", deleted.

Tables 4.3.5 through 4.3.8 Revision Corrections to Cone-to-Cylinder Equations - The following revisions were made to the calculation procedures for cone-to-cylinder junctions:(1) Table 4.3.5 and Table 4.3.6: Replaced curve -fit coefficients MsN and QN(2) Table 4.3.7 and 4.3.8: Corrected errata(3) Table 4.3.7: Corrected equations for "phi [sub kj]", "phi [sub ks]", and "phi [sub ke]"(4) Table 4.3.8: Corrected equations for "phi [sub ks]", and "phi [sub ke]"

4.4.12.2 Errata Errata - (1) Para. 4.4.12.2.d - The word "shall" was corrected to "shell" in the first line.(2) Para. 4.4.12.2.i.3 - The reference to " 4.12.2.c" was corrected to " 4.4.12.2.c; the reference to "4.12.2.h.3" was corrected to "4.4.12.2.c".

4.4.12.2.i.3 Revision Correct Paragraph References - In 4.4.12.2.i.3 the reference to "4.12.2.c" was corrected to "4.4.12.2.c", and the reference to "4.12.2.h.3" corrected to "4.4.12.2.h.3".

4.4.15 Revision Correction to Variable Definitions - The definitions for variables "R", "R[sub L ]", "R[sub S]", and "Z[sub c]" were corrected and a new variable "R[sub m]" added. All of these variable are associated with cone-to-cylinder calculations.

Figure 4.4.3 Revision Correction to Figure - The variables associated with a large stiffening ring which acts as a bulkhead, "A [sub L]"," I [sub L]", and "Z [sub L]", were corrected on Sketch (a-1).







4.5.4.1, Table 4.5.2 Revision Nozzle Neck Thickness Calculation - In 4.5.4.1, a sentence was added to the end of the paragraph reminding the designer that when specified, corrosion allowance shall be added to the minimum nozzle neck thickness as given in Table 4.5.2. Table 4.5.2 was revised by expanding the listing of nominal size pipe and the corresponding minimum wall thickness, to be consistent with the Table published in Section VIII, Div. 1.

4.6.3.1, 4.6.4.3 Revision Z-Factor for Flat Head Equation - An oversight in the 2007 Edition was corrected by adding the 2.5 limit on the Z-factor in para. 4.6.3.1. Also Table references in para. 4.6.4.3.d, e, and f were corrected.

4.6.5 Revision Correction to Nomenclature - The reference to "Table 4.16.8" was corrected to "Table 4.16.6" for the variable "h [sub G]".

4.12.1 Revision Correction to Nomenclature - For variable delta, the reference to "Table 4.12.4" was corrected to "Table 4.12.14".

4.1.6.4 Revision Correction to Equation(4.11.4) - In the calculation of "F [sub p ]", the expression was corrected to be the minimum of two terms, and not the maximum.

4.15.3.3.c.1, 4.15.3.3.c.2, 4.15.6

Revision Use of Joint Efficiency for Girth Weld on Horizontal Vessel - In the calculations of longitudinal stress in a horizontal vessel supported on saddles, the acceptance criteria was corrected from "S" to "SE", introducing the joint efficiency. Also, in 4.15.3.3.c.2, the reference to paragraph "4.15.3.3.c.1" was corrected to "4.15.3.3.a or 4.15.3.3.b". The variable, "E", was added to the Nomenclature in 4.15.6.











4.16.7.2, 4.16.12, Tables 4.16.10 and 4.16.11

Revision Flange Bolt Spacing Correction Factor - This revision introduces a bolt spacing correction factor "B [sub SC]" into the flange design rules. This check on the maximum bolt spacing is only required when specified by the user or his designated agent. Further when a limit on the bolt spacing is specified and a correction factor applied to the flange moment, "M [sub o]", the correction factor, "B [sub SC]", is set equal to 1.0 when carrying out the flange rigidity check in Step 10.The variables, "a", "B [sub s]", "B [sub smax]", and "B [sub SC]" , related to the bolt space correction factor, were added to the Nomenclature in 4.16.12. In Table 4.16.10 equations for calculating the flange rigidity were added for reverse type flanges (integral and loose type). Finally, Table 4.16.11 was added containing the equations to calculate the bolt spacing factors.

4.16..6.1.c.2 Revision Editorial Correction - The paragraph number was corrected in 4.16.6.1.c.2.

4.17.6, Fig. 4.17.1, Sketch(d)

Revision Correction to Nomenclature and Figure - In the Nomenclature for the design rulesfor clamp connections, 4.17.6, the variable "N" was defined twice . The entry where "N " was defined as the gasket contact with was deleted. Sketch (d) of Figure 4.17.1 was corrected to reflect a clamp connection utilizing a low seating load gasket. Also the spelling of "section" was corrected in Note (1).

4.18.8 and 4.18.9 Revision Maximum tube joint load comparison has been added. - Revisions to the fixed and floating tubesheet rules of 4.18.8 and 4.18.9 added requirements to compare the largest tube-to-tubesheet loads calculated per 4.18 to the maximum loads permitted per 4.18.10, 4.1.1.2 or Annex 4.C, as applicable.

4.18.8.4.k, 4.18.8.6.b, 4.18.8.6, 4.18.9.4.k, 4.19.9.6

Revision Added elastic-plastic rules for floating tubesheets - This action added elastic-plastic calculations for floating tubesheets by making the following changes:(1) Removed conditions of applicability listed in 4.18.8.4.k, Option 3. Clarified reference to the conditions of applicability listed in 4.18.8.6.b. (2) Replaced "Young's modulus" with "Modulus of Elasticity" in 4.18.8.6 in two places.(3) Added option 3 to 4.18.9.4.k to inform the reader about the elastic-plastic optionfor floating tubesheets.(4) Added new paragraph in 4.18.9.6 to show the floating tubesheet elastic-plasticcalculation procedure.









Various Paragraphs Errata Errata - (1) Para. 4.18.7.5.3.b.3.i - Variable "S [sub PSs]" corrected to "S [sub PS,s], Variable "S [sub PSc]" corrected to "S [sub PS,c], "component" corrected to "components".(2) Para. 4.18.7.5.3.b.ii - Variable "S [sub PSs]" corrected to "S [sub PS,s].(3) Para. 4.18.7.5.3.b.iii - Variable "S [sub PSc]" corrected to "S [sub PS,c] and spelling of "channel" corrected.(4) Para. 4.18.8.4.i.6.iv - added word "If" to beginning a sentence.(5) Para. 4.18.8.4.k.2 - Added, after word "cylindrical" in line 1.(6) Para. 4.18.8.5.c.5 - Variable "S [sub sb,1] to "S [sub s ,b,1]".(7) Para. 4.18.8.8.2 - Correct spelling for "integral".(8) Para. 4.18.8.8.3.b - Paragraph subheadings corrected to " 1), 2), and 3) "(9) Para. 4.18.8.8.3.b.3.i - Variable "S [sub PSs ]" corrected to "S [sub PS,s], Variable "S [sub PSc]" corrected to "S [sub PS,c]".(10) Para. 4.18.8.8.3.b.3.ii - Variable "S [sub PSs]" corrected to "S [sub PS,s]".(11) Para. 4.18.8.8.3.d.1 - Correct numbering " i) changed to 1)".(12) Para. 4.18.8.8.3.d.1 - Correct numbering " ii) changed to 2)", and "Configurations a, e, and f" changed to "Configuration a". (13) Para. 4.18.9.5 - Moved this paragraph to 4.18.9.7(14) Para. 4.18.9.7.2 - Corrected spelling for "integral".(15) Para. 4.18.9.7.3.b.i - Variable "S [sub PSs]" corrected to "S [sub PS,s]", Variable "S [sub PSc]" corrected to "S [subPS,c].(16) Para. 4.18.9.7.3.b.ii - Variable "S [sub PSs]" corrected to "S [sub PS,s]".(17) Para. 4.18.9.7.3.b.iii - Variable "S [sub PSc]" corrected to "S [sub PS,c]".(18) Para. 4.18.9.7.3.d. - Correct paragraph numbering "iii" to "1)", "i" to "2)".(19) Nomenclature - Variable "S [sub sb,1]" corrected to "S [sub s ,b,1]".(20) Table 4.18.4 - "<" corrected to "< =" in 2 places; "when" replaced by "as", "0 to X [sub a]" replaced by "0 --> X [sub a ]".

4.19.2.e, 4.19.2.f, 4.19.3.1.h,

Revision Bellows operating in the creep range - The previous rule in 4.19.2.e that states: "The design temperatures shall not be in the range where the time-dependent properties govern the allowable stress." was deleted, and the design temperaturelimit set to 425°C (800°F) for all materials. This provision also clarifies in 4.19.3.1.h that the material properties at the operating level temperature may be used for the fatigue analysis.





4.C.1.5.b.1, 4.C.6 Revision Allowable Load on Tube-to-Tubesheet Joints - These revisions to Annex 4.C weremade to keep these rules for the allowable load on tube-to-tubesheet joints consistent with those published in Appendix A of Section VIII, Division 1. A summary of the major changes follows:(1) 4.C.1.5.b.1 - Clarified that it is the operating temperature of the tube-to-tubesheet joint that must be within the tube and tubesheet time independent properties as provided in Annex 2.A.(2) 4.C.6 - Nomenclature - In the definition for "f [sub e]" the phrase "the required holding power" was changed to "sufficient residual interface pressure between thetube and hole for joint strength".(3) 4.C.6 - Nomenclature - revised definition of "k", whereby k= 1.0 four loads due to thermally-induced or pressure plus thermally-induced axial forces on welded only joints, and k=2.0 four loads due to thermally-induced or pressure plus thermally-induced axial forces on all other tube-to-tubesheet joints.(4) 4.C.6- Nomenclature - The definition of "S [sub T]" was changed from "specifiedminimum tensile strength" to "tensile strength from the material test report".(5) 4.C.6 - Nomenclature - Definitions were provided for "S [sub u]" and "S [sub ua]".

5.5.2.4.e Errata Errata - (1) Para. 5.5.2.4.e - In the Equation (5.19), the variable "p" was corrected to "P".

5.5.3.2.e, 5.5.4.2.g, 5.5.5.2.g

Revision Correct Paragraph References - In paragraphs 5.5.3.2.e and 5.5.4.2.g the reference to "Annex 3.F" was corrected to "Annex 3.F., paragraph 3.F1". In paragraph 5.5.5.2.g the reference to "Annex 3.F" was corrected to "Annex 3.F", paragraph 3. F.2".

Table 5.11 Revision Correct Fatigue Strength Reduction Factors - In Table 5.11, the fatigue strength reduction factor for a partial penetration weld, Surface Condition = Root, Quality Levels 2 and 6, was changed from "1.5" to "NA". For a fillet weld, Surface Condition = Root, Quality Level = 6, the fatigue strength reduction factor was changed from "3.0" to "NA".

5.A.7 Revision Correction to Nomenclature - Add variable "sigma [sub s ]" and definition.

Subpart/Table: Annex 4.C




Subpart/Table: Annex 5.A




Figure 5.F.1, Figure 5.F.2 Revision Corrected Figure Titles - Deleted "For Accelerated Tests" in the title to Figure 5.F.1and added "For Accelerated Tests" in the title to Figure 5.F.2.

6.4.3.8 Revision Examples of Local Postweld Heat Treatment - Local postweld heat treatment is addressed in paragraph 6.4.3.8. The first sentence was revised by adding some examples for local area heating such as "spot or bull's-eye local heating".

6.5.5.1.b Revision PWHT of Clad and Lined Weldments - The cautionary note concerning possible implications following improper post of the treatment was deleted since this subject is already addressed in Section II, Part D Appendix A, A-350.

Table 6.1, Figure 6.6 Revision Deletion of Strain Eqs. for Tube & Pipe Flares - Paragraph 6..1.2.4.c requires thatheat treatment in accordance with Table 6.2 be applied regardless of the amount of calculated strain for flares, swages, or upsets. However Table 6.1 contained equations to estimate the amount of strain in tube or pipe flares, swages or upsets. These equations were deleted from the table. Figure 6.6 depicting cold forming operations for flaring, swaging and upsetting of tubing was deleted.

7.5.5.1, 7.5.5.2, 7.5.5.3, Table 7.8

Revision UT In Lieu of RT - In the 2010 Edition, Section V incorporated several provisions from Code Case 2235-9, "Use of Ultrasonic Examination in Lieu of Radiography". Section V added Mandatory Appendix IX to Article 4 for Procedure Qualification Requirements for Flaw Sizing and Categorization, and Mandatory Appendices VII and VIII to Article 4 for UT Examination Requirements for Workmanship Based Acceptance Criteria and Fracture Mechanics Acceptance Criteria. As a result of these changes to Section V, a reference to new Appendices VIII and IX in Section Vwas added to 7.5.5.1, and any corresponding requirements related to flaw sizing and categorization and fracture mechanics based acceptance criteria were removed from paragraphs 7.5.5.1 through 7.5.5.3. In Table 7.8, the reference to paragraph 7.5.5.4 was changed to paragraph 7.5.5.2 in Note (4). Manufacturers should note that as part of the incorporation of Case 2235 -9 into Section V, some technical changes were made to the rules as they relate to the number of flaws that must be present in a mock-up for thick welds, and the introduction of an intermediate sized flaw for material with thickness greater than 1 in. (25mm). ONCE CASE 2235-9 IS ANNULLED, MANUFACTURERS SHOULD CAREFULLY REVIEW THE SECTION V UT REQUIREMENTS IN APPENDICES VIII AND IX.

Figures 7.16 and 7.17 Addition Partial Penetration and Fillet Weld Dimensions - Figures 7.16 and 7.17 were added to address an oversight from the initial publication of the 2007 Edition where a reference to these Figures exists in Table 7.2. These Figures define the dimension "a", which represents the leg dimension for a fillet weld, or the depth of a partial penetration weld.

Subpart/Table: Annex 5.F








8.1.2.d Revision Safety Precuation Added for Pneumatic Test - The current statement addressing safety concerns when conducting pneumatic tests was revised, and a reference to ASME PCC-2, Article 5.1, Appendix III " Safe Distance Calculations for Pneumatic Pressure Test" and Appendix II "Stored Energy Calculations for Pneumatic Pressure Test" were added.

8.1.3.2.d, 8.1.3.4 Revision Deleted Rules for Glass Lined Vessels - Paragraphs 8.1.3.2.d and 8.1.3.4 provide special rules for conducting pressure tests of glass lined vessels. However, unlike Section VIII, Division 1, Section VIII, Division 2 does not contain thecomplete set of fabrication rules for glass lined vessels. Therefore, these two paragraphs where deleted.






Article KG-5 Revision Added Article KG-5 for Composite Reinforced Pressure Vessels - The addition of Article 5 is an incorporation of two Code Cases (2390 and 2579). The additon of the new Article and supporting paragraphs thoughout Division 3 now permit Composite Reinforced Pressure Vessels (CRPV).

KG-141 Revision Update Reference Standards - Section X has been added to paragraph KG-141 and the following reference standards were added, updated or deleted in Table KG-141:ASME B16.9 2007 updatedASME B16.11 2005 updatedASME B16.20 2007 updatedASME QAI-1 2005 updatedASTM SI-9 Deleted deletedASTM E 140 2002-2007 updatedASTM E 399 2006e2 updatedASTM E 647 2008 updatedASTM E 1290 2007e1 updatedASTM E 1820 2008 updatedASTM E 1823 2007a updatedANSI/ASNT CP-189 2006 updatedSNT-TC-1A 2006 updatedASTM D 445 1995 (R2001 ) addedASTM D 1045-95 2001 addedASTM D 1652 1997 addedASTM D 2196 1999 addedASTM D 2290 2000 addedASTM D 2343 1995 addedASTM D 2344/2344M 2000 addedASTM D 2583 1995 (R2001 ) addedASTM D 2584 1994 addedASTM D 2471 1999 addedASTM D 3171 1999 addedASTM D 4018 1999 (R2004 ) added

Code Book: VIII-3

Part:



Subpart/Table: Part KG




KG-311.16 Revision Added paragraph for CRPV UDS requirements - This revision is part of an incorporation of two Code Cases (2390 and 2579). The changes now permit Composite Reinforced Pressure Vessels (CRPV) as Article KG-5. Paragraph KG-311.16 was added to account for some additional requirements needed on theUser's Design Specification (UDS) for these types of vessels.

Table KG-141 Errata Errata - The 2006 Edition/Year of ASNT CP-189 and SNT-TC-1A were adopted in the 2009 Addenda, however due to a publishing oversight, this change was not made in Table KG-141. This was corrected as Errata in the 2010 Edition. The Year/Edition for ASNT CP-189 was corrected from 2001 to 2006. The Year /Edition for ASNT SNT-TC-1A was corrected from 2001 to 2006.

Article KM -5 Revision Added Article KM-5 for Composite Reinforced Pressure Vessels - The addition of Article KM-5 is an incorporation of two Code Cases (2390 and 2579). The new Article addresses laminate material requirements for Composite Reinforced Pressure Vessels (CRPV).

KM-201.2(e) Revision Added definition for thickness of specific forging shapes - A definition for the nominal thickness of round, hexagonal, and octagonal solid forging has been added.

KM-211.2 and Table KM-211

Revision UNS numbers added as reference and Table deleted - Table KM-211 was intended to list precipitation and age hardened materials that have been air quenched after aging where the datum point used may be T/4 diameter or thickness from a heat treated end. The Table was not adequately descriptive. TheTable has been deleted and the references to the Table have been revised to refer to Tables KHA-1 and KHA-1M for these materials. Also, rather than referencing ASME Specification Number and Type/Grade in para. KM-211.2(b), the applicable UNS numbers are now referenced instead.

KM-232 Revision Reference to Section II added. - Reference to Section II has been added for consistency with other references throughout this Division.

KM-307.1 and KM-307.2

Revision Deleted reference to "ANSI" - References to "ANSI" and "American National Standard" have been revised to ASME in paragraph KM-307.1 and removed from paragraph KM-307.2.

KM-400(c)(2), Tables KCS-1 and KCS-1M

Revision Reference to Table U-2 deleted - The reference to Table U-2 in Section II has been deleted in paragraph KM-400(c)(2). The change also includes the incorporation of Section II, Part D, Table U-2 (Customary and Metric) into Tables KCS-1 and KCS-1M.

Table KCS-1 and KCS-1M

Revision Added Note 23 for actual measured yield strength - The current Note 10 for Table KCS-1 and KCS-1M restricts the use of SA-723 Class 4 material only when used as a inner layer in a vessel whose design meets the leak-before-burst criteria of KD-141. SA-723 Class 3 material is permitted for use on applications for all pressure retaining parts. However, it was determined that in practice, the actual product yield strengths of SA-723 Class 3 sometimes fall in the Class 4 range. The new Note 23 restricts the use of Class 3 when the actual yield strength is higher than 160 ksi (1100 MPa)

Subpart/Table: Part KM




Table KCS-1 and KCS-1M

Revision Added Notes 24 through 28 - The change deletes references to Table U-2 in Section II, Part D but this Table also referenced SA-241 and SA-242 wire materialswhich are acceptable for use in Division 3 vessels, but were not listed in Tables KCS-1 and KCS-1M. This revision adds these materials to Tables KCS-1 and KCS-1M and Notes 24 through 28 which correspond to these materials.

Table KCS-1M, KHA-1M, KNF -1M

Revision Maximum Design Temperature revised in the Metric Tables - The original Maximum Design Temperatures in the Metric [SI] Tables were based on a "hard " conversion from the US Customary units. The conversion should be instead a more exact, or "soft", one.

Table KHA-1 and KHA-1M

Revision Nominal composition editorial correction - Revised "17Cr-4Ni-1Al" to "17Cr-7Ni-1Al" for SA-705 Type 631 (UNS S17700) in Tables KHA-1 and KHA-1M.

Article KD-10 Revision Removed "transport and storage" terms - High pressure vessels for hydrogen service are used in many applications other than transport and storage. The removal of these terms will require KD-10 to be used in any hydrogen service. These changes essentially remove a "loophole" that Manufacturers were using to exempt process vessels from the requirements of KD-10. - Title removed "transport and storage"- KD-1000(a) - revised to required KD-10 for all vessels in hydrogen service. - KD-1000(b) - Upper temperature limit established as 200°F (95°C) for both nonwelded and welded vessels. This change makes KD-10 mandatory for vessels under this temperature and optional for those operating above this temperature.- KD-1001(a) was deleted. Paragraph renumbered.- KD-1010(a) and (b) were deleted as a result of the change in KD-4 that made API579-1/ASME FFS-1 applicable for the definition of crack depth. Paragraph renumbered.- KD-1052 - removed the word "gaseous".

Article KD-13 Revision Added Article KD-13 - Special Design Requirements for CRPV - The addition of Article 13 is an incorporation of two Code Cases (2390 and 2579). The additon of the new Article and supporting paragraphs thoughout Division 3 now permit Composite Reinforced Pressure Vessels (CRPV).

Figs . KD-1130 and KD-1131

Revision Internal blend radii revised - Figures have been revised to allow the minimum internal blend radius to be a function of the inside diameter, DH, or thickness of the nozzle, t [sub n.] This revision brings the definitions in line with Nonmandatory Appendix J.

KD-101 Revision KD-101 Note Deleted - ASME has discontinued the publication and distribution of HPS-2003. KD-101 had a Note referring to this document that has been deleted.

KD-200(f) Revision Moved cautionary Note from KD-220 to KD-200(f) - New paragraph KD-200(f) wasin KD-220. It has been removed from KD-220 and added as KD-200(f) to caution the designer about possible dimensional changes when applying the equations inKD-221 and also when performing elastic- plastic analyses per KD -230.

KD-322(d)(3) Errata Reference paragraph corrected. - Paragraph has been revised to correct the previous reference to KD-616(c). It now refers to KD-627(c).

Subpart/Table: Part KD




KD-401(c) Revision Critical crack depth definition corrected for consistency. - The 2008 Addenda had changed Paragraph KD-412. Critical crack size is calculated using API 579-1/ASME FFS-1 in KD-212; however, paragraph KD-401(c) still had the old definition of critical crack size.

KD-440 Revision Last sentence in first paragraph of KD-400 has been deleted. - ASME has discontinued the publication and distribution of HPS-2003. The last sentence of the first paragraph of KD-440 was deleted since the Nonmandatory Appendix B that was referenced has been deleted.

KD-601(b) Errata Paragraph reference corrected - The 2008 Addenda had renumbered several paragraphs. This revision corrects the reference to KD-250 instead of the incorrectreference to KD-260.

KD-627(d) Revision Deleted reference to "ANSI" - References to "ANSI" has been revised to "ASME" in paragraph KD-627(d).

KD-932.3 Revision Equation (3) "delta s bar" definition revised. - The definition for delta s (bar) in equation (3) was revised because it was not clear whether the relative standard deviation needed to be expressed as a percentage or as a decimal. Also, it was not clear that one relative standard deviation must be determined for each tested level of stress amplitude and that "delta s bar" is the average of those relative standard deviations. According to KD-932.1(c) fatigue tests shall be made at no less than four levels of stress amplitude.

KD-1041, KD-1045, KD-1047, KD-1048, KD-1053 and KD-1056

Revision K [sub IH] - Threshold Stress Intensity Value - As a result of threshold stress intensity value, K[sub IH], tests, several paragraphs of Article KD-10 have been revised to improve the specified test method. The improved test method will resultin more reliable K[sub IH] data which are used in the fracture mechanics design of the vessels. The tests indicated that for high K[sub IH] materials, for constant displacement test method, a high level of K[sub IAPP] (Initial Applied Elastic StressIntensity Factor) is needed to force the crack growth in pressurized hydrogen gas. Ifcrack growth does not occur at K[sub IAPP] then K[sub IH ]is defined as 0.5 X K[sub IAPP]. The following changes have been made in Article KD-10:- KD-1041(c) revision specifies that K[sub IH] = 0.5 X K[sub IAPP] for constant displacement method without crack growth- Added new paragraph (a)(2) to KD-1045 and new Table for the recommended K[sub IAPP] values as a function of material Yield Strength (YS) for some ferritic steels.- KD-1045(b)(1) revised to indicate that K[sub IH ]= 0.5 X K[sub IAPP].- KD-1045(b)(2) revised to increase the allowable limit of "a/W" from 0.65 to 0.95 toincrease specimen’s usability. - KD-1047 revised to indicate that K[sub IH] = 0.5 X K[sub IAPP] for no crack growth at K[sub IAPP] and paragraph restructured.- KD-1048 revised for clarity- KD-1053(a) for thickness limitations has been deleted and paragraphs renumbered.- KD-1056 "R–ratio" revised.

KD-1043(d) Revision Reference to SA-370 added. - Reference to SA-370 instead of A 370 has been added for consistency with other references throughout this Division.

Table KD-231.3 Revision Load factors for global criteria revised - The load case factors for global criteria inTable KD-231.3 were modified to be consistent with the load factors in Section VIII,Division 2. The factors in Section VIII, Division 3 were derived by reducing all of the Div. 2 factors by the ratio 1.8/2.4 to account for the difference in the basic design margin.



Article KF-12 Revision Added Article KF-12 for CRPV - The additional Article addresses special fabrication requirements for Composite Reinforced Pressure Vessels (CRPV)

KR-164 Addition Added PRD requirements for CRPV - Alternative pressure relief device (PRD) set pressure requirements to address the new CRPV in transport service have been added.

KR-346(b) Revision Certification interval of PRDs changed to 6 years. - The Certification interval required for Manufacturers or Assemblers of UV3 stamped pressure relief devices (PRD) has been revised to 6 years from 5 previously listed . This is to synchronize the interval to better coincide with the ASME 3 year QC audit cycle.

Article KE-5 Revision Added Article KE-5 for Composite Reinforced Pressure Vessels - The addition of Article 5 is an incorporation of two Code Cases (2390 and 2579). The addition of the new Article and supporting paragraphs throughout Division 3 now address additional examination requirements for Composite Reinforced Pressure Vessels (CRPV).

KE-233 and KE-400 Revision Permits liquid penetrant in lieu of magnetic particle NDE. - A second paragraph was added to KE-233 and KE-400 has been revised to allow the use liquid penetrant (PT) examination when the use of wet magnetic particle (MT) examination may not be capable of finding relevant surface defects. An example ofthis is a vessel constructed with internal threads. A longitudinal MT examination cannot be conducted in the threaded area to find indications in the circumferential direction which is where the cracks will initiate.

Article KT-5 Revision Added Article KT-5 for Composite Reinforced Pressure Vessels - The addition of Article 5 is an incorporation of two Code Cases (2390 and 2579). The new Article addresses additional testing requirements for Composite Reinforced Pressure Vessels (CRPV).

Subpart/Table: Part KF


Subpart/Table: Part KR


Subpart/Table: Part KE


Subpart/Table: Part KT




KS-150, KS-270, KS-303,KS-321, KS-322

Revision Added paragraphs for Composite Reinforced Pressure Vessels - With the inclusion of Composite Reinforced Pressure Vessels (CRPV) to Division 3, new paragraphs were needed to address special requirements for stamping (KS-150),Manufacturer's Certificates (KS-270), Manufacturer's Data Reports (KS-303), Manufacturer's Construction Records to be Supplied with CRPV (KS-321), and Retention of Data Reports (KS-322).

Appendix 2 Errata Rules for electronic certification of welding documents - Appendix 2, 2-125 - This paragraph was inadvertently not published in Division 3 when the rules for electronic certification of welding documents were adopted in the 2006 Addenda.

Appendix A, A-100 Revision Revised A-100(d) - Revision adds a Form K-3 Manufacturer's Data Report Supplementary Sheet reference.

Appendix A, Table A-100.3, Forms CRPV-1A and CRPV-2A

Revision Added Forms and preparation guide for CRPV - With the inclusion of Composite Reinforced Pressure Vessels (CRPV) to Division 3, two new Manufacturer's Data Reports forms and instructions for preparing them have been added to Division 3.

Appendix B Revision Appendix B has been deleted - ASME has discontinued the publication and distribution of HPS-2003 . Nonmandatory Appendix B has been removed.

Appendix D Revision Revised for clarity - Paragraph D-500 and Table D-500 were both awkwardly worded. The revision and renumbering cleans up the wording of the paragraph and Table.

Appendix I, I-100 Revision Reference revised. - In paragraph I-100, the reference revised to "Appendix X" was corrected to "Appendix 7".

Appendix J, J-110 Errata Equation and paragraph references corrected - The 2008 Addenda had renumbered several paragraphs and equations. This revision corrects the reference to KD-250 instead of the incorrect reference to KD-260 in J-110. Also, the reference to "equation (4)" was changed to "equation (3)".

Subpart/Table: Part KS








Case 2564 Revision Revisions to Paragraph 3.1(b) - Paragraph 3.1(b) has been revised to account for the fact that equivalent plastic strain is a positive-definite quantity. So, "averaging" and "linearizing" equivalent plastic strain does not necessarily result in "membrane" and "bending" strains. The first strain limit in the Code Case (0.2 % plastic strain) is intended to be a membrane strain limit, whereas the 2% strain limit is intended to be associated with bending. The revisions apply only to these two strain limits. This revision was published in Supplement 11 of the 2007 Edition Code Cases.






Introduction Revision UT Qualification of Welders and Welding Operators - The third paragraph of "Performance Qualifications" was revised to include "volumetric NDE" of a test coupon or initial production weld to permit qualification of welders and welding operators by ultrasonic (UT) examinations on test welds in material 1/2 inch (13 mm) thick or greater in lieu of radiography or mechanical testing. This change incorporates the requirements of Code Case 2326 and is reflected in revised paragraphs in Section IX Articles I and III. THIS IS A SIGNIFICANT NEW OPTION TO MANUFACTURERS FOR THE QUALIFICATION OF WELDERS AND WELDING OPERATORS.

Procedure Qualifications Errata Code Edition Corrected - In the last sentence describing Temper Bead Welding, the Code Edition reference was corrected from "2007 " to "2004 ".

Welding and Brazing Data Errata Code Addenda Reference Corrected - The previous reference to "2008" Addendain the 5th paragraph of "Welding and Brazing Data" was corrected to "2009 ".

QW-100.3 Errata Referenced Paragraph Corrected - The previous reference to "QW-420.1" in the penultimate paragraph was corrected to "QW-420".

Code Book: IX

Part:



Subpart/Table: Introduction


Subpart/Table: Article I




QW-142, QW-143, QW-191

Revision UT Qualification of Welders and Welding Operators - The subject paragraphs were revised to permit qualification of welders and welding operators by ultrasonic(UT) examinations on test welds in material 1/2 inch (13 mm) thick or greater in lieu of radiography or mechanical testing. QW-191 has been retitled "Volumetric NDE". Ultrasonic Examination requirements were added to QW-191.2. These changes incorporate the requirements of Code Case 2326.Ultrasonic examinations for welder and welding operator qualification must be performed using a written procedure verified by the Manufacturer to be in compliance with Section V, T-150, and to the requirements of Section V, Article 4 for methods, procedures and qualifications. UT Examiners shall be qualified in accordance with their employer's Written Practice, which shall meet all applicable requirements of SNT-TC-1A or ACCP or CP-189 as stated in QW-191.2.2. RT examination method and personnel qualification requirements are unchanged from the previous Code Edition.

In a significant change from previous requirements, the volumetric examination acceptance criteria for performance qualifications for a given NDE method when using either test coupons or first production welds are the same and are found in QW-191.2.2 (RT) and QW-191.2.3 (UT). RT acceptance criteria for the qualification of welding operators using first production welds no longer refer to the Construction Code.

THIS CHANGE PROVIDES A SIGNIFICANT NEW OPTION TO MANUFACTURERS FOR THE QUALIFICATION OF WELDERS AND WELDING OPERATORS.

QW-252 Errata Deleted Essential Variable QW-403.13 - Reference to the previously deleted QW-403.13 was removed from QW-252.

QW-300.1, QW-300.2, QW-304, QW-305 and QW-321.3

Revision UT Qualification of Welders and Welding Operators - The subject paragraphs were revised to include the term "volumetric NDE" of a test coupon or initial production weld to permit qualification of welders and welding operators by ultrasonic (UT) examinations on test welds in material 1/2 inch (13 mm) thick or greater in lieu of radiography. or mechanical testing. This change incorporates the requirements of Code Case 2326 and is reflected in revised paragraphs in Section IX Introduction and Article I. Note: When a welder or welding operator attempts to qualify by volumetric examination and an immediate retest of a qualification coupon is required (QW-321.3) the immediate retest shall be by the same volumetric examination method as the initial (failed) test.

THIS REVISION PROVIDES A SIGNIFICANT NEW OPTION TO MANUFACTURERS FOR THE QUALIFICATION OF WELDERS AND WELDING OPERATORS.

Subpart/Table: Article II


Subpart/Table: Article III




QW-302.1 Revision Deleted Reference to Figure QW-463.2(h) - QW-302.1 describes the specimens necessary for groove weld performance qualification. Groove weld test specimen locations are shown in Figures QW-463.2(a) through QW-463.2(g). Figure QW-463.2(h) shows the location of fracture specimens and macroetch specimens. Since the latter specimens are used for fillet weld performance qualification rather than groove weld performance qualification, the previous reference to Figure QW-463.2(h) in the second sentence of QW-302.1 was deleted,

Figure QW-463.2(h) Revision Revised Caption to Figure QW-463.2(h) - The previous caption of Figure QW-463.2(h) referred to the position as “5f.” The current terminology for this fillet weld position uses a capitalized “F.” The caption was corrected to read “5F.”

Figures QW-462.4(a), QW-462.4(b) and QW-462.5(e)

Revision Clarification of Figures - Figures QW-462.4 (a) and (b) and QW-462.5 (e) were revised to remove all dashed lines other than the lines where cuts are to be made to remove test specimens. The previous inclusion of hidden three- dimensional lines created confusion as to where the cuts were to be made.

QW-403.18 Errata Referenced Paragraph Corrected - The previous reference to "QW-420.2" was corrected to "QW-420".

QW-403.6, QW-406.3, QW-407.4, QW-409.1 & QW-410.9

Revision Added P-No. 10H Duplex Stainless Steels - Duplex (austenitic/ferritic) stainless steels solution annealed after welding were not specifically mentioned in Section IX. From a metallurgical standpoint, it would seem logical that they would be handled in the same manner as austenitic stainless steels that are solution annealed after welding, based upon the fact that the detrimental metallurgical characteristics in the heat affected zone (HAZ) would be eliminated by the solution heat treatment. As a result of an Interpretation, "P-No. 10H" materials were added to the referenced Code paragraphs.

QW-409.26 Revision Heat Input Determination - Special Process - Revised special process essential variable QW-409.26 by adding the last sentence: "The increase may be measured by the methods of QW-409.1". to address heat input determination using instantaneous energy or power measurements. THIS IS A SIGNIFICANT CHANGE FOR THOSE MANUFACTURERS USING WAVEFORM CONTROLLED POWER SOURCE TECHNOLOGY FOR SPECIAL PROCESS WELDING.

QW-409.29 Revision Heat Input Determination - Temper Bead Welding - Temper Bead Welding Procedure (QW-290.4) essential variable QW-409.29 was revised to address heat input determination using instantaneous energy or power measurements by reference to QW-409.1.THIS IS A SIGNIFICANT CHANGE FOR THOSE MANUFACTURERS USING WAVEFORM CONTROLLED POWER SOURCE TECHNOLOGY IN TEMPER BEAD WELDING.

QW-409.8 Revision Added Waveform Controlled Welding - Nonessential variable QW-409.8 was revised by adding "or waveform controlled welding" and a reference to new "Nonmandatory Appendix H - Waveform Controlled Welding".THIS CHANGE WILL BE OF SPECIAL INTEREST TO THOSE MANUFACTURERS USING WAVEFORM CONTROLLED POWER SOURCE TECHNOLOGY FOR WELDING.

QW-420 Errata Year Corrected - In the 6th paragraph of QW-420, "2008" was corrected to "2009 ".

Subpart/Table: Article IV




QW-420.1 Revision Added Miniimum Specified Tensile Strength Caveat - Revised QW-420.1 to require procedure qualification be done only with materials that have a minimum specified tensile strength value.

QW-451.1 Revision Revised QW-451.1 and Note (3) - (1) Removed previous references to Note (3) from "T" and "t" columns in QW-451.1 for thicknesses over 6 inches (150 mm); (2) added PAW welding process to revised Note (3).

QW-452.5 Revision QW-452.5 Clarification - Revised QW-452.5 as follows: (1) Added reference to a new NOTE (1) in the text of the first column heading under "Tee fillet"; (2) Revised the text on the first line, second column to read "3/16 (5) or greater", deleting reference to 3/8 in. (10 mm) implied maximum test coupon thickness. ; (3) Added new NOTE (1), which states: "test coupon prepared as shown in QW-462.4(b) for plate or QW-462.4(c) for pipe." as additional guidance. Previous NOTE (1) is now designated as NOTE (2).

QW-482 Addition Revised Electrical Characteristics Table - (1) Columns for specifying "Wire Feed Speed (Range)" and "Energy or Power (Range)" were added to "Electrical Characteristics" listed in the table on the back of Suggested Form QW-482 (WPS); (2) ",or power or energy range," was added to the note directly beneath the table. These changes were a consequence of the addition or modification of variables associated with the addition of "Waveform Controlled Welding" to Section IX.

QW-483 Addition Revised Electrical Characteristics Block - A line for "Heat Input" was added to "Electrical Characteristics" listed in the block on the front of Suggested Form QW-483 (PQR). This change was a consequence of the addition or modification of variables associated with the addition of "Waveform Controlled Welding" to SectionIX.

QW/QB-422 Revision Deleted ASTM A 148, A 521 and A 668 - All previously assigned "S-No" materials in QW/QB-422 were reviewed to ensure that those with questionable weldability were not subsequently assigned P-Numbers . Based on Section IX Committee criteria, the following three ASTM material specifications were deleted from QW/QB-422: (1) A 148, "High-strength castings designed for structural use"; (2) A521, "Carbon steel die forgings, annealed normalized and tempered"; (3) A 668, "High-strength, large-diameter carbon steel forgings".

QW/QB-422 Revision SB-169 UNS C61400 Stress Lines - For SB-169 UNS C61400, two (2) stress lines were added for Min. Spec. Tensiles 72 (495) and 70 (485) ( = 1/2 in. [ = 13 mm]) and (1/2 in. - 2 in. [13 mm - 51 mm]) and one (1) revised for Min. Spec. Tensile 65 (450). (> 2 in. - 5 in. [> 51mm - 127mm])

QW/QB-422 Addition Increased thickness for SA/EN 10028-3:2003 P275NH - Lines were added for SA/EN 10028-3:2003 P275NH at 4-6" (100-150 mm) and 6-10" (150-200 mm).

QW/QB-422 Errata SA-537, A 633 and SA-592 Entries - The "Product Form" lines for SA-537 Cl . 1 and Cl.2 and A 633 Grades C and D for plate > 2 1/2 in. - 4 in. (64 mm - 102 mm), and SA-592 Grades F and E for forgings > 2 1 /2 in. - 4 in. (64 mm - 102 mm) were corrected by adding ", incl." after the entries. The lower-case letters "a" and "b" in the previous entries for A 633 under "Type or Grade " were deleted.

QW/QB-422 Errata SA-688 Entries - The lower-case letters "a", "b" and "c" in the previous entries for SA-688 under "Type or Grade" were deleted.

QW/QB-422 Errata SA-738 Entries - (1) SA-738 Grade B thickness range was deleted from the "Product Form"; (2) "incl." was added to the first line entry in the "Product Form" of SA-738 Grade C ," thickness range.



QW/QB-422 Errata SB-366 Entries - (1) "Nominal Composition" previous entries of SB-366 "99Ni" and "99Ni-Low C " were corrected to "99.0Ni" and "99.0Ni-Low C ", respectively; (2) SB-366 UNS No. N08330 previous "Nominal Composition" entry of "35Ni-19Cr-1.25Sl" WAS corrected to "35Ni-19Cr-1.25Si".

QW/QB-422 Revision Deleted Minimum Tensile Strength Values - The "Minimum Tensile Strength" entries for ASTM A 269, A 513, A 519, A 707, and A 890 were deleted .

QW/QB-422 Revision Changes to A 403 - (1) "A403" S34565 was changed to "SA-403"; (2) Brazing P-No.102 was added; and (3) material assigned to ISO 15608 Group "8.3".

QW/QB-422 Addition ISO 15608 Group Numbers - A column was added to QW/QB-422 to identify the corresponding material group numbers according to ISO/TR 15608:2005 - "Welding - Guidelines for a metallic materials grouping system" and is consistent with the assignments found in ISO/TR 20173:2008 - "Grouping systems for materials — American materials".THIS ISO 15608 GROUP LISTING IS PROVIDED AS A CONVENIENCE AND IS FOR INFORMATION ONLY. SECTION IX DOES NOT REFER TO THE ISO 15608 GROUPINGS AS A BASIS FOR ESTABLISHING THE RANGE OF BASE METAL QUALIFIED FOR EITHER PROCEDURE OR PERFORMANCE QUALIFICATION. NOTE: THIS ADDITION DOES NOT APPEAR IN EITHER THE "SUMMARY OF CHANGES" OR "LIST OF CHANGES IN RECORD NUMBER ORDER" PRINTED IN THE 2010 EDITION.

QW/QB-422 and Appendix D

Addition Added UNS S32205 as P-No. 10H Material - As the result of the incorporation of Code Case N-741, QW/QB-422 and Appendix D were revised to include UNS S32205 for material specifications SA-182, SA-240, SA-479, SA-789, SA-790 and SA-815 as P-No. 10H material. The corresponding ASTM "A" Specification numbers for these grades were deleted. Also, "A 182" Grade F 60 Specification number was changed to "SA-182.


Addition Added SA/EN 10028-2:2003 13CrMoSi5-5+QT as P-No. 4 Group 1 - ASME SectionVIII, Division 2 requested SA/EN 10028-2:2003 material 13CrMoSi5-5+QT for use in welded construction to a maximum temperature of 570°C. The material was added to QW/QB-422 and Appendix D as P-No. 4 Group 1.


Revision Revised Entries for SA-299 Grades A and B - As a result of the incorporation of Code Case 2364, QW/QB-422 and Appendix D were revised to include SA-299 Grade B as P-No. 1 Group 3 material and SA-299 Grade A as P-No. 1 Group 2.


Revision Reassigments from P-No. 5B Group 2 to P-No. 15E Group 1 - Deleted A 217 C12A, A 356 12A and A691 9Cr, Class 2 as P-No. 5B Group 2 materials and reassigned them to P-No.15E Group 1 in QW/QB-422 and Appendix D. When the Standards Committee approved the reassignment of P-No. 5B Group 2 materials to P-No. 15E Group 1, the reassignment of the ASTM materials used by Codes such as B31 was missed.


Addition Assigned EN 10028-4 Nickel Alloy Steels as P-No. 11A Group 1 - SA/EN 10028-4 Grades X7Ni9 and X8Ni9 were added to QW/QB-422 and Appendix D and assigned as P-No. 11A Group 1 materials. These EN grades are essentially equivalent to ASME SA-553.


Addition Assigned P-Nos. to Several SA/EN Materials - SA/EN 10025-2 S235JR carbon steel plate and SA/EN 10217-1 P235TR2 ERW tubing were assigned as P-No.1 Group No. 1; and SA/EN 10088-2 X6CrNiMoTi 17-12-2 stainless steel plate, sheet and strip was assigned as as P-No. 8 Group 1.




Addition SA/EN 10216-2 P-Number Assignments - SA/EN 10216-2:2002 Grades P235GH,P265GH, 16Mo3, 13CrMo4-5, 10CrMo9-10 and X10CrMoVNb9-1 were assigned as P-No. 1 Group 1, P-No. 1 Group 1, P-No. 3 Group 1, P-No. 4 Group 1, P-No. 5A Group 1 and P-No. 15E Group 1 materials , respectively. NOTE: THESE MATERIAL GRADES ARE NOT YET LISTED IN SECTION II, PARTS A AND D.


Addition Added SA-213 310HCbN (UNS S31042) - Incorporated SA-213 310HCbN (UNS S31042) from Code Case 2115 -3 as P-No. 8 Group No. 3 materials .


Addition Incorporated UNS S34565 Materials - 24Cr-17Ni-6Mn-4.5Mo-N, UNS S34555, Austenitic Stainless Steel Forgings, Bar, Fittings, Welded and Seamless Pipe and Tube, Plate, Sheet, and Strip materials from Code Case 2146 were incorporated as P-No. 8 Group No. 4.


Addition Assigned P-Nos. to SA/EN 10222-2 - Included SA/EN 10222-2 Grades P280GH, P305GH, 13CrMo4-5, 11CrMo9-10 and X10CrMoVNb9-1 in QW/QB-422 and Appendix D and assigned P-No. 1 Group 1, P-No. 1 Group 2, P-No. 4 Group 1, P-No. 5A Group 1 and P-No. 15E Group 1, respectively, to these materials .


Revision Added SA-645 Grade A - ASTM A 645/A 546M-05 changed the designation of the 5% Ni steel to Grade A. This material is designated as P-No. 11A Group No. 2.


Addition Assigned P-No. to SA/EN 10028-2, Grade P355GH - Added SA/EN 10028-2, Grade P355GH and assigned P-No. 1 Group 2 to this material.This material may be considered as a near equivalent to SA-516 Grade 70.


Addition Added SA-841 Grade A, Class 1 and Grade B. Class 2 - SA-841 Grade A, Class 1 and Grade B, Class 2 were added to QW/QB-422 and Appendix D by incorporation of Code Case 2130-4, as P-No. 1 Group 2 and P-No. 1 Group 3 materials , respectively.


Addition Added P-No. Listings for Various ASTM Materials - Welding P-Nos. were assigned in QW/QB-422 and Appendix D for the following ASTM Materials as shown: A 199 T5 (Welding P-No. 5B Group 1) , A 199 T9 (P-No. 5B Group 1) , A 199T11 (P-No. 4 Group 1), A 199 T21 (P-No. 5A Group 1), A 199 T22 (P-No. 5A Group 1), A 234 WP5 Cl.1, A 234 WP5 Cl.3 (P-No. 5B Group 1), A 234 WP9 Cl.3(P-No. 5B Group 1) , A 234 WP11 Cl .3 (P-No. 4 Group 1), A 234 WP12 Cl.2 (P-No. 4 Group 1),A 234 WP22 Cl.3 (P-No. 5A Group 1) , A 234 WP9 Cl.1 (P-No. 5B Group 1), and A 691 91 (P-No. 15E Group 1). See QW/QB-422 entries for corresponding brazing P-Nos.


Revision Added UNS No. R56323 Alloy - SB-265, SB-338, SB-348, SB-363, SB-381, SB-861, and SB-862 Ti 3Al-2.5V-0.1Ru Grade 28 wrought titanium alloy (UNS No. R56323) were added as a result of the incorporation of Code Case 2425 -2. The alloy was assigned to P-No. 53 (welding) and P-No. 115 (brazing).


Revision SA/AS 1548 Grade Designations - (1) The previously listed grade designation of "5-490" for SA/AS 1548 has been deleted. and (2) the previously listed grade designations "7-430", "7-460" and "7-490" have been changed to grades "PT430" [welding P-No. 1 Group No. 1 / brazing P-No. 101], "PT460" [welding P-No. 1 Group No. 1 / brazing P-No. 101] and "PT490" [welding P-No. 1 Group No. 2 / brazing P-No. 101], respectively.

QW/QB-492 Revision Welding Operator - The comma in previous definition heading "welding, operator" is incorrect and was removed for clarity to correctly read "welding operator".



QW/QB-492 Revision Revised Definition of "Machine Welding" - As a result of Interpretation IX-07-11, the following phrase was added to the definition of machine welding: "or adjusted under the welding operator's direction". A person who makes adjustments to the welding equipment settings, under the supervision and control of the welder or welding operator performing the weld, need not be a qualified welder or welding operator under QW-301.2.

QW/QB-492 Addition Waveform Controlled Welding Related Definitions - Definitions for "instantaneouspower or energy" and "waveform controlled welding" were added.

QB-451.3 Revision Workmanship Coupons - Regular lap joint procedure qualification may be supplemented with additional workmanship test coupons for the purpose of expanding the thickness range qualified for materials that are not readily available for use as standard procedure qualification test coupons. Note (4) was added to QB-451.3 referring to QB-451.5.

QB-452.1 Revision Sectioning Tests Clarification - QB-141.1 states in part : “Sectioning tests are alsoa substitute for the peel test when the peel test is impractical to perform…” Although QB-452.1 stated two (2) peel tests are required, it did not clearly indicate that an equal number of sectioning tests may be substituted. The addition of references to Section(ing) test specimens in the rightmost column of QB-452.1 and a modification to NOTE (1) clarified these requirements and reinforced the applicability of QB-141.4.

QW-484A & QW-484B Revision Added UT Examination - The welder and welding operator performance qualification suggested forms QW-484A and QW-484B were revised to include a block to indicate "or UT". The change was made to reflect Section IX allowance of "volumetric NDE" (either radiographic (RT) or ultrasonic (UT)) of a test coupon or initial production weld to permit qualification of welders and welding operators.

Appendix E Errata Corrected AWS Designation of one SWPS - Shielded Metal Arc Welding SWPS Designation B2.1.1-023-94 (R05) was corrected from the previous addenda to B2.1.8-023-94 (R05).

Subpart/Table: Article XIV


Subpart/Table: Appendix B


Subpart/Table: Appendix E




Appendix H Addition Waveform Controlled Welding - New Appendix - New Nonmandatory Appendix H -Advances in microprocessor controls and welding power source technology have resulted in the ability to develop waveforms that improve control of arc characteristics for pulsed welding. The characteristics selected by the welder or welding operator are no longer limited to amperage, voltage or wire feed speed, as in traditional welding power sources. Widespread use of waveform controlled power sources has resulted in the need to review traditional methods of measuring heat input and specifying welding variables for applicability to this new technology. Work performed by several equipment manufacturers and research organizations has shown significant error in the actual power (current, voltage ) produced by a waveform controlled power source in measurements obtained using conventional DC or RMS amperage and voltage meters compared to that measured by high frequency sampling methods that account for changes in the wave shape. The error can be on the order of 20% and be in a non-conservative direction.

When qualifying a new welding procedure using waveform controlled welding, the instantaneous energy or power range is used in lieu of the amperage and voltage ranges to determine the heat input per QW-409.1(c). When qualifying a new procedure using nonwaveform controlled welding, either the current (amperage) and voltage is recorded and heat input determined using the methods of QW-409.1(a) or QW-409.1(b), or the instantaneous energy or power is recorded and the heat input determined by the method in QW-409.1(c).

WELDING PROCEDURES PREVIOUSLY QUALIFIED BY NONWAVEFORM CONTROLLED WELDING AND HEAT INPUT DETERMINED BY QW-409.1(a) MAY CONTINUE TO BE USED FOR WAVEFORM CONTROLLED WELDING PROVIDED THEY ARE AMENDED TO REQUIRE HEAT INPUT DETERMINATION FOR PRODUCTION WELDS USING THE METHODS OF QW-409.1(c). WELDING PROCEDURES PREVIOUSLY QUALIFIED USING NONWAVEFORM CONTROLLED WELDING AND HEAT INPUT DETERMINED BY QW-409.1(b) CONTINUE TO BE APPLICABLE FOR WAVEFORM CONTROLLED WELDING WITHOUT CHANGES TO THE HEAT INPUT DETERMINATION METHOD

Methods are described in Nonmandatory Appendix H to: (1) determine if the heat input of a waveform controlled production weld meets the heat input range of a welding procedure qualified with nonwaveform controlled welding with heat input determined using QW-409.1(a); and (2) determine if the heat input of a nonwaveform controlled production weld meets the heat input range of a welding procedure qualified with waveform controlled welding with heat input determined using QW-409.1(c).

Separate performance qualifications are not required for waveform controlled welding; however, it is recognized that a welder or welding operator may require instruction on the proper use of the equipment. The extent of such instruction is leftto the discretion of the manufacturer.

THIS APPENDIX WILL BE OF SPECIAL INTEREST TO THOSE MANUFACTURERS USING WAVEFORM CONTROLLED POWER SOURCE TECHNOLOGY.

Subpart/Table:




Index Errata Corrected Index Entries - (1) Changed reference for "S-Numbers" to "QW-420"; (2) Changed last reference for "Tests - macro-examination" to "QW-192.1.4".




RG-100, RG-110, RS-110and Figure RS-132.1

Revision Add Class III filament wound vessels for use up to 15000 psi - A Class III filamentwound vessel with polar boss openings for use up to 15000 psi (103.4 MPa) was added as Mandatory Appendix 8. As part of the action several paragraphs, Figuresand Forms [RG-100(b)(3)(a), RG-100(b)(9), RG-111(c), RS-100(a), RS-110 and Figure RS-132.1, CPV-1 and CPV-2] were revised to add the Class III reference, limitations and requirements.

RG-323 Revision Deletion of references to assembly of UV stamp and Assembler - Safety Relief Devices are required to comply with Section IV or Section VIII, Division 1 per paragraph RR-112. It was deemed unnecessary to include references to the "Assembler", "UV Stamp" and the Certificate of Authorization for the UV stamp in this Code Section and they were deleted..

RD-1010 and RD-1020 Errata Paragraph re-designation and reference change - Paragraphs RD-1020 .1 and RD-1020.2 have been editorially re-designated as RD-1020(a) and (b), respectively. RD-1010(c) reference to RD-1020 subparagraphs were revised accordingly.

RT-330 Revision 5% lower limit for volumetric expansion has been deleted. - The 2007 Edition deleted the lower limit of 5% of the value recorded in the Qualification Test Report and Procedure Specification for volumetric expansion for small vessels by adding RT-330.2. The Committee felt that this lower limit could be deleted for all vessels. RT-330.1 has been deleted and RT-330.2 revised into one paragraph.

RT-520 Errata Paragraph Re-designated. - Paragraph RT-521 was editorially re-designated as RT-520.

Code Book: X

Part:



Subpart/Table: Part RG


Subpart/Table: Part RD


Subpart/Table: Part RT




Appendix 1 Revision Deletion of references to assembly of UV stamp and Assembler - Safety Relief Devices are required to comply with Section IV or Section VIII, Division 1 per paragraph RR-112. It was deemed unnecessary to include references to the "Assembler", "UV Stamp" and the Certificate of Authorization for the UV stamp in this Code Section and they were deleted..

Appendix 8 Addition New Appendix for Class III vessels for use up to 15000 psi - In order to meet requirements for small high pressure storage tanks for use in hydrogen powered motor vehicles a Code Case was required to add a fully wrapped composite vessel with polar boss openings for pressure up to 15000 psi (103.4 MPa). Other Code book Sections did not address a high pressure composite vessel, so Section X adopted the Case as Mandatory Appendix 8.

Appendix AG Revision Deletion of references to assembly of UV stamp and Assembler - Safety Relief Devices are required to comply with Section IV or Section VIII, Division 1 per paragraph RR-112. It was deemed unnecessary to include references to the "Assembler", "UV Stamp" and the Certificate of Authorization for the UV stamp in this Code Section and they were deleted..

Appendix AJ Revision Table Q-1 and Form titles updated - "Year" and "Revision" columns in Table Q-1 and the subtitles of the Forms had not been kept up to date with the revisions made to the Forms in Appendix AJ over the past few years. This revision makes the Table information and Form subtitles current with the latest revisions of the Forms.

Subpart/Table: Appendices




IWA-1400(c) Revision Revised IWA-1400(c) - The revised paragraph requires that the Owner be responsible for the preparation of plans, schedules, and preservice and inservice inspection summary reports, and for submitting these documents to the enforcement and regulatory authorities having jurisdiction at the plant site, if required by these authorities.

IWA-1400(n)(2) Revision Revised Reference to NQA-1 Part I - Table IWA-1600-1 was previously changed torefer to NQA-1 1994 Edition. With the introduction of this edition, NQA-1 was reorganized such that "Part I" contains the Basic and Supplementary Requirements. Previous references to "Part II" and "Part III" have been deleted and the reference in IWA-1400(n)(2) revised.

IWA-2410 Revision Revised IWA-2410 to Address PSI and ISI - IWA-2410 was revised to address Preservice Inspection (PSI), initial and successive Inservice Inspection (ISI) for a new nuclear power plant receiving a Combined Operating License (COL) under US 10CFR52 by removing the reference to US 10CFR50, Section 50.55a. This change should also benefit Owners using Section XI outside the USA.

IWA-4131 through 4133 Revision Revised IWA-4131.1, 4132 and 4133 - (1) IWA-4131 .1 and IWA-4133 were revisedto clearly indicate the three permitted means of installing mechanical clamps; (2) IWA-4131.1 and IWA-4132 were revised to clarify the actions required when an alternative requirement is selected.

IWA-4180 Revision Reinstated IWA-4180 - IWA-4180 was incorporated into IWA-4311, IWA-6330 and IWA-6350 as part of the changes made for the 2003 Addenda. The Committee later discovered this inadvertently reduced the scope of IWA-4180. This reduction in scope resulted in cases where Design Specifications or Design Reports could be changed and not be required to receive the review and certification required by the Owner's Requirements and Construction Code (e.g. Changing the Construction Code Edition for a replacement item). This was not the intent of the previous action. In order to preserve the intent of maintaining these records currentfor all changes, IWA-4180 was reinstated, IWA-4311(e) was deleted (and incorporated into IWA-4180 ). Also, IWA-6340 and IWA-6350 were revised to move retention of records and reports of repair/replacement activities into the more appropriate paragraph (from IWA-6340(d) to IWA-6350(c)).

IWA-4411(h) Revision Revised IWA-4411(h) - Use of Nonmandatory Appendix Q - Reference to stress corrosion cracking (SCC) was deleted to make IWA-4411 (h) consistent with prior changes to Nonmandatory Appendix Q, and to clarify that when Appendix Q is used, all of its requirements become mandatory and the provisions of IWA-4520 and IWA-4530 do not apply. Nonmandatory Appendix Q previously only addressed weld overlays for stress corrosion cracking (SCC). Code Case N 504-2 and Appendix Q were determined to be appropriate for addressing defects for fatigue cracking as well as SCC.

IWA-4461.4.2 Revision Deleted IWA-4461.4.2 - The US Nuclear Regulatory Commission considered the evaluation requirements of IWA-4461.4.2 for leaving a surface of a thermal cutting process without subsequent mechanical processing to be insufficient. No strong argument could be presented to retain the section so it was deleted and IWA-4461was restructured to eliminate subparagraphs.

Code Book: XI

Part: Div. 1

Subpart/Table: IWA




IWA-4666.2(a) Errata Errata - IWA-4666.2(a) - Corrected by errata "Article 4" to "Article 5" in IWA-4666.2(a).

IWA-4722 andIWA-4725.2.1(a)(6)

Revision Deleted IWA-4722 and IWA-4725.2.1(a)(6) - Rules for explosive tube plugging and explosive sleeving have been deleted. These techniques have been infrequently used and future use is not anticipated, so the subject paragraphs were deleted..

IWA-6240 Revision Revised IWA-6240 - The paragraph was revised to require only that preservice and inservice inspection summary reports be completed within the timeframes specified in IWA-6240. Requirements addressing submittal of these documents were revised to be consistent with the changes to IWA-1400(c).

IWB-1220 Revision Revised IWB-1220 to Exempt VT -1 and VT-3 - IWB-1220 exempts listed components from volumetric and surface examinations. Visual examinations VT -1 and VT-3 were exempted as well based upon IWF-1230 and intent Interpretation XI-1-86-45.

IWB-2430 Revision Added Criteria for Performance of Alternative Examinations - This revision incorporates the criteria of Code Case N-586-1 and Interpretation XI-1-98-41. Code Case N-586-1 allowed additional examinations to be limited to those welds, areas, parts or supports that are subject to the same apparent or root cause and degradation mechanism as the flaws or relevant conditions originally detected. Application of the Code Case required the performance of an engineering evaluation to determine these factors. Interpretation XI-1-98-41 stated that additional examinations may be limited to the method that originally detected the subject flaws or relevant conditions.

Various Errata Errata - Editorial Corrections - Corrected text and format errors by errata to the following: Table IWB-3518-2 Notes, and Table IWB-2500-1.

IWC-2430 Revision Added Criteria for Performance of Alternative Examinations - This revision incorporates the criteria of Code Case N-586-1 and Interpretation XI-1-98-41. Code Case N-586-1 allowed additional examinations to be limited to those welds, areas, parts or supports that are subject to the same apparent or root cause and degradation mechanism as the flaws or relevant conditions originally detected. Application of the Code Case required the performance of an engineering evaluation to determine these factors. Interpretation XI-1-98-41 stated that additional examinations may be limited to the method that originally detected the subject flaws or relevant conditions.

Subpart/Table: IWB


Subpart/Table: IWC




IWD-2430 Revision Added Criteria for Performance of Alternative Examinations - This revision incorporates the criteria of Code Case N-586-1 and Interpretation XI-1-98-41. Code Case N-586-1 allowed additional examinations to be limited to those welds, areas, parts or supports that are subject to the same apparent or root cause and degradation mechanism as the flaws or relevant conditions originally detected. Application of the Code Case required the performance of an engineering evaluation to determine these factors. Interpretation XI-1-98-41 stated that additional examinations may be limited to the method that originally detected the subject flaws or relevant conditions.

Subsection IWE Revision Removed Imprecise Wording - Affected items include IWE-1232; 2310 (b)&(c); 2311; 2312; Table IWE-2500-1, E-A, Note: (1)&(1)(d); Table IWE-2500-1, E-C, Note: (2); IWE-3511; IWE-3513; and IWE-3521.

IWF-2430 Revision Added Criteria for Performance of Alternative Examinations - This revision incorporates the criteria of Code Case N-586-1 and Interpretation XI-1-98-41. Code Case N-586-1 allowed additional examinations to be limited to those welds, areas, parts or supports that are subject to the same apparent or root cause and degradation mechanism as the flaws or relevant conditions originally detected. Application of the Code Case required the performance of an engineering evaluation to determine these factors. Interpretation XI-1-98-41 stated that additional examinations may be limited to the method that originally detected the subject flaws or relevant conditions.

Subsection IWL Revision Removed Imprecise Wording - Affected items include IWL-1220; 2220.2; 2230 ; 2310; 2421; 2510; 3111; 3211 ; 4120; 4180; 4220; 5210; 5260; and IWL-5300 .

Table IWL-2525-1 Errata Errata - Table IWL-2525-1 Note (3) - Corrected Note (3) by errata "1NNaOH" to "One Normal (1N) NaOH", and "1NH2SO4" to "One Normal (1N) NH2SO4"

Subpart/Table: IWD


Subpart/Table: IWE


Subpart/Table: IWF


Subpart/Table: IWL




I-2400 Revision Revised I-2400 UT Examination Requirements - UT examination references wererevised for welds and materials to Section V Article 4 and Article 5, respectively. This reflects changes to the layout of Section V made in 2002.

Mandatory Appendix II Revision Revised Mandatory Appendix II - "Owner's Report for Inservice Inspection", Form NIS-2 (Block 8), and the "Guide for Completing Form NIS-2" (Item 22) were revisedto clarify the entries required when preparing NIS-2 Reports . Requirements to record temperature and pressure have been removed as was "test pressure" and "temperature" blanks on Form NIS-2.

Mandatory Appendix VIII

Errata Errata - Editorial Corrections - Corrected text and format errors by errata to the Mandatory Appendix VIII.

C-8520 Revision Added Article C-8520 - IGSCC - Piping flaw evaluation in Nonmandatory AppendixC requires flaw growth due to stress corrosion cracking (SCC) to be included. SCC growth rates in austenitic steels exposed to boiling water reactor (BWR) water environments were not defined. Intergranular SCC growth equations and applicable radiation and environmental validity limits for use of the equations were added.

G-3100 and G-4100 Errata Errata - G-3100 and G-4100 - Replaced "normal, upset" with "Level A and Level B Service Limits" in paragraphs G-3100 (General Requirements - Piping, Pumps, and Valves) and G-4100 (General Requirements - Bolting).

Nonmandatory Appendix B

Revision Deleted Nonmandatory Appendix B - Nonmandatory Appendix B - "Forms" contained Forms NIS-BA "Record of Welding Operator Qualification Test for Tube Welding by Explosives" and NIS-BB "Example of Tube Examination Report" (dated 10/06). There was no reference to either Form in Section XI or that they were being used in Section XI applications; therefore, this Appendix was deleted in its entirety.

Nonmandatory Appendix C

Errata Errata - Nonmandatory Appendix C - Numerous subscripts to Nonmandatory Appendix C - "Evaluation of Flaws in Piping" were corrected by errata.

N-513-3 Errata Errata - Figure 1 (b) - Extended line for "R" in Figure 1(b) with arrow point to meet horizontal line in the cross-hatched region to properly indicate mid-wall radius. This item was corrected in the 2007 Edition of "Code Cases: Nuclear Components" (Supplement 11).









N-778 Addition Approved Code Case N-778 - "Alternative Requirements for Preparation and Submittal of Plans, Schedules, and Preservice and Inservice Inspection Summary Reports". (Applicability: Section XI 1989 Edition through the 2007 Edition with the 2009 Addenda.) was approved. This Code Case was developed to eliminate the Section XI requirement that licensees submit ISI plans, schedules , and preservice and inservice inspection summary reports to the regulatory and enforcement authorities having jurisdiction at the plant site. The requirement to submit plans and schedules is essentially a regulatory requirement and intended to be removedfrom the Code. Owners were required by ASME to submit these documents to the regulatory and enforcement authorities, regardless of whether these authorities needed or even wanted this documentation. Should the regulatory and enforcement authorities wish to continue receiving these documents, these authorities should specify this in the applicable regulations governing the Owner’s plant site. In parallel to this Code Case, complementary revisions were made to IWA-1400(c) and IWA-6240.

Interpretations Errata Interpretation XI-1-86-30R-2E - This item originally appeared in Volume 56. The words "1992 Edition With the" were added by errata to the Subject line. The Subjectline now reads: "IWF-2430, IWF-2420(b), IWF-3000, and Code Cases N-491, N-491-1 [-2430, -2420(b), and -3000]; Visual Examination of Supports and Corrective Measures (1980 Edition and Later Addenda and Editions Through the 1992 Edition With the 1993 Addenda)". The Question and Reply were unchanged.

Interpretations Errata Errata - Interpretation XI-1-07-39 (Vol. 59) - The word "Nonmandatory" previously in Questions (1) and (2) was replaced with "10CFR50".


Subpart/Table:


Part:






Table TM-130.2-1 Revision Revised SA-299 in the Table to be Grade specific - TableTM-130.2-1 was revised to make the SA-299 listing specific to Grades A and B

Table TM-130.2-6, TM -260.3 and TF-740(e)

Revision Grade A designation added to listings of SA-645 - The Grade A designation has been added to any listing for SA-645. The 2005 Edition of A 645 changed the designation of the 5% Ni steel to Grade A and added a new Grade B. NOTE: SECTION XII HAS NOT YET ADOPTED GRADE B.

TR-210.3(c) Revision PRD Certification interval changed to 6 years. - The Certification interval required for Manufacturers or Assemblers of "TV" stamped pressure relief devices (PRD) has been revised to 6 years from 5 previously listed. This is to better synchronize with the 3 year ASME QC Audit cycle.

Appendix 1, 1-2.3(a) Errata Equation exponent corrected - The exponent for variable A was corrected from ".082" to "0.82".

Appendix 1, 1-3.10 Revision Reference to NBIC Welding Method revised - When the National Board InspectionCode (NBIC) was restructured in 2007, the paragraph reference to "Welding Method 2" became incorrect. This revision corrects the reference.

Appendix 1, 1-3.11.1 and 1-3.11.2

Revision Referenced corrected to match new Appendix III nomenclature - Paragraphs 1-3.11.1(e)(4)(b), 1-3.11.1(f)(3)(b), and 1-3.11.2 all refer to Appendix XIII for reference steel; however the current Appendix XIII contains different nomenclature. This revision corrects these paragraphs to match the Appendix.

Appendix 1, 1-3.5.1(g)(1)(b)

Errata SI Minimum Thickness Unit Corrected. - The SI unit for minimum thickness for aluminum vessel has been editorially corrected from "6.86 m" to "6.86 mm".

Code Book: XII

Part:



Subpart/Table: Part TM


Subpart/Table: Part TR


Subpart/Table: Modal Appendices




Appendix 1, 1-3.5.1(i)(1),(4) and (5)

Revision Exemptions from fatigue evaluations added for MC 331 Tanks - Paragraph 1-3.5.1(i)(4) and (5) have been added to provide some exemption rules from design consideration of cyclic loads for MC 331 Tanks. Paragraph 1-3.5.1(i)(1) was revised to add the new subparagraph references.

Appendix VIII Errata Para. VIII2, Figures VIII2-1 and VIII2-4 corrected by errata - The variable "I[sub a]" has been corrected to "L[sub a]" in paragraph VIII2(b). The S[sub a ] equation has been corrected in paragraph VIII2(c)(2). The denominator should have been "L[sub b] squared". Figure VIII2-1 sketch (f) now references "Case 3(c)". The Moment of Inertia equations in Figures VIII-4 (a) and (b) were corrected.

Appendix XVI Revision Appendix for Local Thin Areas added. - New Mandatory Appendix XVI has been added to address rules that permit a local thin area (LTA) in a shell or head with no reduction in MAWP. LTAs in pressure vessels are small local areas in the shellor head that have a thickness less than the nominal thickness, and in some cases, less than the required thickness. The transport industry felt that a similar rule as Appendix 32 in Section VIII, Div. 1 was needed. These rules can be very useful late in fabrication if an LTA is found, it may be possible to leave it as is thereby eliminating the need to build up the thickness with weld metal, and resulting PWHT, NDE, and pressure test issues. MANUFACTURERS SHOULD FAMILIARIZE THEMSELVES WITH THESE RULES BEFORE USING THEM.

Appendix E Revision E10 requires full pressure test of fully assembled tank - The previous paragraph E10 only recommended a leak test. It was decided that in the interest of public safety the fully assembled tank should be given a full pressure test of 130% of design pressure instead of 90% of MAWP. Guidance was also added for leak testing for the vacuum-jacketed parts of the tank.

Appendix E Revision Mandatory language removed - Appendix E is nonmandatory but when it was added to the Code it contained mandatory words such as "must", "shall", etc. The revision changes the words to be consistent with a Nonmandatory Appendix (e.g. "may, "should", etc). The revisions are in paragraphs E2(a) and (b), E3(f)(1) and (f)(2), E4(a) and (a)(2), E6(b), all of E9 and E11.

Appendix H Revision Deleted and renumbered paragraph headers - There were several placeholder headers (H5 through H13) that have been deleted. The header and subparagraphdesignators for paragraph H4 were revised to be able to expand H 4 when new categories of cargo tanks are added in the future, e.g. Subheader H 4.1 "Category 400 Cargo Tanks" was added with this revision Paragraph H14 was renumbered to H5.

Appendix H Revision Mandatory language removed - Appendix H is nonmandatory but when it was added to the Code it contained mandatory words such as "must", "shall", etc. The revision changes the words to be consistent with a Nonmandatory Appendix (e.g. "may, "should", etc).



Subpart/Table: NonMandatory Appendices


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