ASME IX Interpretation-Part4

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Standard Designation: BPV Section IX

Edition/Addenda:

Para./Fig./Table No:

Subject Description: Section IX, QW-214

Date Issued: 06/09/1982

Record Number: BC-81-309

Interpretation Number : IX-82-21

Question(s) and Reply(ies): Question: Is it required that the entire bend test specimen for procedure

qualification of overlay (QW-214) be covered with overlay weld metal?

Reply: No.


Edition/Addenda:


Subject Description: Section IX, 1974 Edition, QW-403.6




Question(s) and Reply(ies): Question: If the thickness of the test plate or pipe is more than 5/8 in. and

QW-403.6 is specified as a Supplementary Essential Variable, what is the

minimum thickness qualified?

Reply: When QW-403.6 is required as a Supplementary Essential Variable

for notch toughness, the minimum thickness qualified when the test plate or

pipe is greater than 5/8 in. is 5/8 in. The minimum thickness specified in

QW-451 is the minimum thickness qualified, except when QW-403.6 is

listed as a Supplementary Essential Variable.


Edition/Addenda:


Subject Description: Section IX, QW-422, A-Numbers vs. AWS Requirements




Question(s) and Reply(ies): Question: Prior to the Winter 1976 Addenda of Section IX, the E8018-C3

electrodes met the A-No. 12 category of QW-442. What is the A-Number

category for this electrode in the revised QW-442 A-Numbers?

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Reply: All E8018-C3 electrodes now meet the requirements for A-No. 10 in

QW-442. This was also true in 1976.


Edition/Addenda:


Subject Description: Section IX, QW-201.1 and QW-201.2




Question(s) and Reply(ies): Question (1): Is it the intent of QW-201.1 to list on the Welding Procedure

Specification each essential and nonessential variable required for each

process whether the variable is applicable for that particular process or not?

Reply (1): It is the intent of QW-201.1 as stated: "The WPS information

may be presented in any form, written or tabular, to fit the needs of each

manufacturer or contractor as long as every essential and nonessential

variable required of the appropriate welding process or processes (QW-252

through QW-281) is included."

Question (2): Do the requirements of QW-201.2 on the Procedure

Qualification Record require a similar enumeration?

Reply (2): The requirements of QW-201.2 call for the Procedure

Qualification Record to document the essential variables of the applicable

process or processes required by QW-252 through QW-281.


Edition/Addenda:






Question(s) and Reply(ies): Question: Is it the intent of the Code, QW-305, that if a man qualifies using

a semi-automatic process (submerged arc), is he also qualified using

automatic submerged arc where the arc is positioned via a fully motorizedmanipulator?

Reply: It is the intent of the Code that welding operators would be governed

by the requirements of QW-305 which would cover all automatic processes.

Semi-automatic submerged arc process, which would be performed by a

welder, would need to comply with the requirements of QW-304 and QW-

354.


Edition/Addenda:


Subject Description: Section IX, Summer Addenda, QW-202.2

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Question(s) and Reply(ies): Question (1): Is there a limit on the minimum depth of deposited metal for

repair or build-up welding? Does this override the minimum limits listed in

Table QW-451.1?

Reply (1): If you limit the weld layers to ½ in. or less in thickness, then the

minimum limits of QW-451.1 are overridden as far as weld metal thickness

is concerned. New work has been done on QW-451.1 which will help

clarify this item.

Question (2): Does qualification on test plates/material less than 3 in. thick

allow repair and build-up welding on base material of thickness up to 2t,

with a depth of deposited metal being limited to a maximum of 2t?

Reply (2): Yes.

Question (3): Does qualification on test plates/material 3 in. thick or greaterallow repair and build-up welding on base material of any thickness, the

depth of the deposited metal is limited to a maximum of 2t?

Reply (3): Yes.

Question (4): Is it permissible to perform repairs deeper than 6 in. using for

qualification plate with a thickness of at least one-half the depth of the

repair?

Reply (4): Yes.

Question (5): Is it correct to assume that the thickness of the material being

repaired refers to the location where the repair is being made?

Reply (5): Yes.


Edition/Addenda:


Subject Description: Section IX, QB-402.1 and QB-402.2 Material Qualification




Question(s) and Reply(ies): Question: QB-402.1 and QB-402.2 are Essential Variables for procedure

and performance qualification, respectively, which indicate that a change

from a base metal listed under one P-Number in QB-422 to a base metal

listed under another P-Number or to any other base metal require

requalification. Can a procedure which is qualified using ASME SB-12

Alloy 122 be used for the brazing of ASME SB-42 Alloy 122 (P-No. 107)

material? Can a procedure which is qualified with ASME SB-466 Alloy 706

(similar to P-No. 107 material, SB-111 Alloy 706) be used to qualify a

brazing procedure for joining SB-12 Alloy 122 (similar to P-No. 107

material, SB-42 Alloy 122)?

Reply: The answer to both questions presented is in the affirmative that

qualification with Alloy 122 or Alloy 706, both included in P-No. 107, will

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qualify all other product forms of that same alloy. The Committee

recognizes that the P-Number tables of the Brazing Section of Section IX

need revision and updating to cover the other product forms for alloys now

listed. The precedent of permitting other product forms of similar chemistry

materials has been well established in all the book sections of the Code in

their General Requirements paragraphs on materials.


Edition/Addenda:


Subject Description: Section IX, QW-404.4




Question(s) and Reply(ies): Question: In the 1977 Edition of Section IX, QW-404.4 stated "A change

from one F-Number in QW-432 to any other F-Number or to any other fillermetal not listed in QW-432, except if otherwise allowed in QW-310." Using

the provision of QW-310.4(a), does a welding procedure qualified with an

F-Number up to and including F-No. 4 qualify welding procedures for the

same or lower F-Number, all other essential variables being the same?

Reply: No. The reference to QW-310 in QW-404.4 was recognized as not

being appropriate as the variable is only for procedure qualification and not

for performance qualification. The last phrase of QW-404.4 has

subsequently been eliminated to prevent such reasoning in the application

of this variable.


Edition/Addenda:






Question(s) and Reply(ies): Question: Do the results of a fillet weld fracture test of QW-182 which has

inclusions and gas pockets meet the requirements of Section IX provided

the sum of these imperfections does not exceed 3/4 in.?

Reply: Yes.


Edition/Addenda:






Question(s) and Reply(ies):

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Question: Is the change from one proprietary brand name filler metal to

another of the same range of chemical analysis specified in the WPS

considered a change of essential variable QW-404.4 (A change from one

F-Number in QW-432 to any other F-Number or to any other filler metal

not listed in QW-432)?

Reply: No.


Edition/Addenda:


Subject Description: Section IX, Welder Qualification




Question(s) and Reply(ies): Question: Does a groove in a procedure test coupon of thickness T have to

be filled completely with weld metal to meet the requirements of Section IX

for a groove weld procedure test coupon?

Reply: No.


Edition/Addenda:



Date Issued: 01/20/1981Record Number: BC-80-630


Question(s) and Reply(ies): Question (1): A welding procedure is qualified on a base material with a

thickness of 1.125 in. Two welding processes are used. The deposited weld

metal thickness for each process is GMAW Short Circuiting Transfer Mode

0.125 in., SAW 1 in. What is the maximum base metal thickness qualified

by this combination procedure?

Reply (1): 1.2375 in. maximum. See QW-200.4 and QW-403.10.

Question (2): A welding procedure is qualified on a base material thicknessof 0.280 in. using the GMAW Short Circuiting Transfer Mode. A second

welding procedure is qualified on a base material thickness of 1.500 in. by

the GTAW and SAW processes. A new WPS is written using these two

procedures, using GMAW Short Circuiting Transfer Mode for the first layer

with SAW balance. What is the maximum base metal thickness qualified by

combining these two procedures?



Edition/Addenda:


Subject Description: Section IX, Multiprocess Thickness Ranges

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Question(s) and Reply(ies): Question (1): When using individually a process that was qualified in

combination with another process, what benefit is gained by stating a base

metal thickness range that is greater than the deposited weld metal thickness

range allowed?

Reply (1): The thicker base metal thickness range is primarily needed for

combination process welds wherein both base metal and deposited weld

metal thickness ranges must be qualified. But the thicker base metal range

may also be used when welding base metals of dissimilar thicknesses or for

partial penetration groove welds wherein the base metal thickness is greater

than the weld groove preparation and, therefore, is greater than the

deposited weld metal thickness.

Question (2): A new WPS is to be written utilizing a multiprocess

procedure GTAW-SAW qualified in combination, and a single procedure

qualified by itself. The multiprocess procedure was qualified using a basemetal thickness of 1½ in. The single process procedure was qualified on a

base material with a thickness of ½ in. by the GMAW-S (short circuiting

process). The new WPS will use the GMAW-S process for the root pass and

SAW balance. What is the maximum base metal thickness that can be

welded using this combination of processes?



Edition/Addenda:


Subject Description: Section IX, QW-282.4(f)




Question(s) and Reply(ies): Question: In reference to hard facing weld metal overlay essential variable

QW-282.4(f), does the phrase "... beyond the range specified" refer to the

current range specified in the Procedure Qualification Record (PQR) or the

Welding Procedure Specification (WPS)?

Reply: The range referred to above is that which is listed on the WPS.

Supporting PQR's must be within the specified range.


Edition/Addenda:






Question(s) and Reply(ies):

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Question (1): A welder was performance qualified with the manual SMAW

process and the semiautomatic SAW process on January 1, 1980. He

welded using the SMAW process on January 15, 1980. Must he weld using

the semiautomatic SAW process on or before April 15, 1980 to remain

qualified with the semi-automatic SAW?

Reply (1): If there is no additional welding after the SMAW on January 15,

1980, the SMAW qualification will expire on April 16. Since the welder isno longer employed on some other welding process, his semiautomatic

SAW qualification will also expire on April 16.

Question (2): A welder was qualified with SMAW and semiautomatic SAW

on January 1, 1980. He welds using SMAW on March 15, 1980 and May

15, 1980. Must he weld using semiautomatic SAW after July 1?

Reply (2): Yes.


Edition/Addenda:






Question(s) and Reply(ies): Question (1): Can a contractor who has developed, qualified, and

maintained his welding procedure specification and has qualified his

welders to these qualified WPS's then place the welders' qualification test

papers into a pool of qualified welders maintained by an organized group

(in this case, the National Certified Pipe Welding Bureau) for all member

contractors to use?

Reply (1): Section IX does not recognize or address any organized group

with regard to welder qualification. Section IX is explicit that each

Manufacturer shall certify that welders have been qualified in accordance

with one of his qualified welding procedures specifications in accordance

with the requirements of Section IX.

Question (2): Are the organized group and all its member contractors in

compliance with Section IX if they use these welders described in Question

(1), without qualifying them?

Reply (2): No.


Edition/Addenda:


Subject Description: Section IX, Qualification of Small Diameter Pipe




Question(s) and Reply(ies): Question: May procedure qualification for fillet welded socket joints less

than 3/4 in. in diameter be conducted on the test specimen prescribed for

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performance qualification, with testing as required for performance

qualification?

Reply: No. QW-202.2 requires procedure qualification for fillet welds only

to be in accordance with QW-180. QW-181.1 refers to QW-462.4(a) as the

only acceptable way to qualify such procedures.


Edition/Addenda:






Question(s) and Reply(ies): Question: May a Certificate Holder subcontract qualification of his welders

to a testing laboratory under the following conditions? (a) the Certificate

Holder will have specific individuals identified in the testing laboratory to

oversee, supervise, and control the qualification test coupons being made;

(b) the identified individual (at the test lab) would be compensated

separately for his services; (c) the welders will weld to the Certificate

Holder's procedures; and (d) the performance qualification test coupons will

be tested using the Certificate Holder's established criteria.

Reply: No.


Edition/Addenda:Para./Fig./Table No:





Question(s) and Reply(ies): Question: A 2 in. NPS pipe is to be welded, without backing, to a flange to

build a nozzle for a Section VIII vessel. The assembly is placed in a

positioner and rotated in such a manner that the entire weld is made in the

1G position (maximum 15 deg. off horizontal). Does the welder have to be

qualified for small pipe diameter less than 2-7/8 in. O.D. per QW-303.3 andQW-452.3?

Reply: In the example cited above, the welder would have to be qualified

for small diameter pipe (less than 2-7/8 in. O.D.).


Edition/Addenda:





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Question(s) and Reply(ies): Question (1): Do the small diameter qualification requirements of QW-

452.3 apply to welders who weld small diameter (less than 2-7/8 in. O.D.)

drill through bosses or weld pads that will later be drilled out to form a

branch connection to a pressure component?

Reply (1): Yes.

Question (2): If the answer to the above question is yes, how is the wall

thickness determined and what tests are to be performed on the test coupon?

Reply (2): The wall thickness is not a consideration. Refer to QW-452.3 for

requirements based on deposited weld metal thickness.


Edition/Addenda:






Question(s) and Reply(ies): Question (1): A procedure qualification groove weld test is conducted on 2

in. thick base metal. A root pass of 1/8 in. is deposited with GTAW, and the

balance is filled with SMAW. The coupon is sectioned and meets the

acceptance criteria for the required testing. Is this procedure qualified for a

base metal thickness of 3/16 in. through 8 in.?

Reply (1): Yes, provided the thickness ranges for deposited weld metal areobserved. However, for a procedure consisting of only GTAW, the range of

base metal thickness is 1/16 in. through 8 in. with 1/16 in. through 1/4 in. of

deposited weld metal.

Question (2): Is the procedure described in Question (1) qualified for

deposited 1/4 in. of GTAW and 7-3/4 in. of SMAW on 8 in. thick base

metal?

Reply (2): Yes.

Question (3): May the PQR described in Question (1) be used to support a

procedure consisting only of SMAW for both base metal and deposited

weld metal ranges of 3/16 in. through 8 in.?

Reply (3): Yes.

Question (4): May the PQR described in Question (1) be used to support a

procedure consisting only of GTAW for both base metal and deposited weld

metal ranges of 1/16 in. through 1/4 in.?

Reply (4): Yes.


Edition/Addenda:


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Question(s) and Reply(ies): Question: A recent weld test using dissimilar materials SA-516 Gr. 70 to A

238 Gr. 9 was given a postweld heat treatment at 1350°F for 6 hr to meet

the requirements of application for ANSI B31.1, ANSI B31.3, Section VIII,

and welded fittings SA-234 Grade P9. While the tension tests were

acceptable with this heat treatment, the side bends failed with a brittle type

fracture at the interface of the A 387 Gr. 9 plate and weld deposit, with no

visible weld defects. During welding the test coupons were maintained at

400-600F and allowed to cool after welding beneath an insulating blanket.

Since QW-163 does permit cracking if not the result of slag inclusions or

other internal defects, would the side bends be acceptable despite the

complete fracture?

Reply: No.


Edition/Addenda:


Subject Description: Section IX, Repair Welding




Question(s) and Reply(ies): Question: Is it necessary to make full thickness butt welds in thick test

materials to qualify for minor surface repair, overlay, or buildup welding onthick parts?

Reply: The Summer 1980 Addenda to Section IX revised QW-202.3. This

paragraph states in part, "The upper limit for base metal and deposited weld

metal shall be in accordance with QW-451, except qualification on 1½ in.

thick base metal will permit welding on unlimited thickness." There is a

conflict between QW-202.3 and QW-202.2 in both the Summer and Winter

1980 Addenda that is applicable to this matter. QW-202.3 is correct and

reference to the 3 in. thick base metal in QW-202.2 should be ignored.

Corrections to these paragraphs will be made by Errata in the Summer 1981

Addenda.


Edition/Addenda:






Question(s) and Reply(ies): Question: Is a welding operator who is qualified to weld to a WPS in one process and position qualified to weld to any other WPS in this same

process in all positions?

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Reply: Yes.


Edition/Addenda:


Subject Description: Section IX, QW-403.11Date Issued: 03/12/1981



Question(s) and Reply(ies): Question: When using either SMAW or GTAW, does welding with F-No. 5

(A-No. 8), F-No. 6 (A-No.8), or F-No. 43 filler materials on a P-No. 5 to

P-No. 5 base material (with 3% maximum chromium content), also qualify

for welding with the following base metals (using the same welding process

and filler materials): P-No. 4 to P-No. 5, P-No. 4 to P-No. 4, P-No. 1 to

P-No. 5, P-No. 1 to P-No. 4, and P-No. 1 to P-No.l?

Reply: QW-403.11 allows a procedure qualified with P-No. 1,3, 4 or 5 (3%

maximum chromium content) base metal welded to itself to qualify for that

P-Number base metal welded to each of the lower P-Number base metals.

Therefore, for the example cited above, the following base metal

combinations are qualified (using the.same welding process and filler

materials): P-No. 5 to P-No. 5, P-No. 4 to P-No. 5, P-No. 3 to P-No. 5, and

P-No. 1 to P-No. 5.


Edition/Addenda:






Question(s) and Reply(ies): Question: In QW-163, is the total amount of defect allowed on the surface

of one bend strap a total of 1/8 in.?

Reply: There may be any number of defects as long as any one defect does

not exceed 1/8 in.


Edition/Addenda:






Question(s) and Reply(ies): Question: For SMAW, SAW, GMAW, GTAW, and PAW welding processes, QW-403.11 and QW-403.12 state that for P-Nos. 1,3, 4, and 5

(of 3% maximum nominal chromium content) a procedure qualification test

with one P-Number metal shall also qualify for that P-Number metal

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welded to each of the lower P-Number metals (i.e., P-No. 5 to P-No. 5 also

qualifies P-No. 5 to P-No. 4, P-No. 5 to P-No. 3, and P-No. 5 to P-No. 1).

Does this also mean that a procedure qualification test with one P-Number

to a lower P-Number (e.g., P-No. 5 to P-No. 4) will also qualify that

P-Number to lower P-Numbers (e.g., P-No. 5 to P-No. 3 or P-No. 5 to

P-No. 1 )?

Reply: No.


Edition/Addenda:






Question(s) and Reply(ies): Question: Is a welder qualified with backing for SMAW also qualified to

weld flare bevel groove welds, tee fillet welds, and partial penetration

groove welds?

Reply: Yes.


Edition/Addenda:


Subject Description: Section IX, Thickness Qualification




Question(s) and Reply(ies): Question (1): Is a right angle joint between a piece of 3/4 in. thick material

and a 2 in. thick material where there is a "J" preparation in the 3/4 in. piece

considered a groove weld?

Reply (1): Yes.

Question (2): What is the minimum thickness of test plate that will qualify a

3/4 in. to 2 in. dissimilar thickness groove weld?

Reply (2): 1 in.; QW-202.4 contains qualification requirements for joints

between dissimilar base metal thicknesses.


Edition/Addenda:






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Question(s) and Reply(ies): Question: Is it required by QW-409.8 to list a voltage range on welding

procedure specifications written for manual SMAW and GTAW?

Reply: Yes.


Edition/Addenda:






Question(s) and Reply(ies): Question: A welder has not used a specific process for a period of 3 months

or more, but during that 3 month period has taken and passed a performance

qualification test with a different process. Would this welder's qualification

on the first process be extended to 6 months?

Reply: Yes.


Edition/Addenda:






Question(s) and Reply(ies): Question: Do welding procedures have to be qualified for each different

heat treatment to comply with QW-407 for nonferrous materials of P-Nos.

41,42, 43, 44, and 45?

Reply: Yes.


Edition/Addenda:

Para./Fig./Table No:Subject Description: Section IX, Qualification of an Autogenous Seal Weld




Question(s) and Reply(ies): Question:Will the following course of action provide an acceptable method

of qualifying an autogenous weld: (a) fuse the root of a groove weld using

the GTAW process with no filler metal added; (b) complete welding of the

joint with the addition of filler metal; (c) perform all required mechanical

testing; and (d) modify the WPS based on the PQR developed as a result of

(c), eliminating all but the fused GTAW root pass from the actual production weld?

Reply: Yes, provided that the applicable thickness ranges are not violated.

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Edition/Addenda:


Subject Description: Section IX, QB-422




Question(s) and Reply(ies): Question (1): Why are the P-Number groupings in QB-422 changed from

time to time, including elimination of some alloys?

Reply (1): P-Number groupings in QB-422 am changed periodically for a

number of reasons. These reasons include additions or deletions of alloy

types in SA/SB specifications, occasional determinations that certain alloy

types are not brazable, and infrequently, alloys are inadvertently eliminated

as part of the editing and printing process.

Question (2): Can materials that have been eliminated from the P-No. 107

grouping in the Summer 1980 Addenda of Section IX be used?

Reply (2): Materials that have been eliminated from the P-Number

groupings cannot be used unless a Code Case is approved or Errata is

published which permits their use to the Section IX Edition and Addenda

from which they were removed. Alloys C 120, C 122, and C 142 (SB-75)

were inadvertently dropped from P-No. 107 in the 1980 Edition, Summer

1980 Addenda and action is presently in progress to restore them in QB-

422.

Question (3): Are Alloys C122 (SB-75) and C102 (SB-42) in the temper

drawn condition acceptable when only annealed properties are shown in

QB-422?

Reply (3): Copper alloys in the temper drawn condition are acceptable for

use. Annealed properties are shown in the P-No. 107 grouping because

temper drawn material will be annealed during the brazing operation.


Edition/Addenda:






Question(s) and Reply(ies): Question (1): In accordance with QW-322, may qualifications of a welding

operator in a specific process be continuously extended by welding as a

qualified welder in the same welding process (e.g., SAW, GMAW,

FCAW)?

Reply (1): No.

Question (2): In accordance with QW-322, may the qualifications of a

welder in a specific process be continuously extended by welding as a

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qualified welding operator in the same welding process (e.g., SAW,

GMAW, FCAW)?

Reply (2): No.

Question (3): In accordance with QW-322, may both the expired welder and

welding operator qualifications of an employee in a specific welding

process (e.g., SAW, GMAW, FCAW) be re-established if the employeesuccessfully makes only one test joint using all the variables of the previous

welder test joint for the specific welding process (e.g., SAW, GMAW,

FCAW)?

Reply (3): The previous welder qualifications are reinstated, but not the

welding operator qualifications.

Question (4): In accordance with QW-322, may both the expired welder and

welding operator qualifications of an employee in a specific welding

process (e.g. SAW, GMAW, FCAW) be re-established if the employee

successfully makes only one test joint using all the variables of the previous

welding operator test joint for the welding process (e.g., SAW, GMAW,FCAW)?

Reply (4): No.


Edition/Addenda:






Question(s) and Reply(ies): Question (1): Two welders have been qualified for a thickness of deposited

weld metal from 1/16 in. to 3/4 in. for a particular welding process. A third

welder is qualified for a deposited weld metal thickness of 3/16 in. to 1 in.

for the same welding process. A 1 in. thick pipe is to be welded in

production, using a single vee butt joint, with the same process for which

the welders are qualified. Is it permissible for each of the first two welders

to deposit 1/2 in. of weld metal to complete the weld?

Reply (1): Yes.

Question (2): Using the same welders and joint configuration as given in

Question (1), one of the welders qualified for a deposited weld metal

thickness range of 1/16 in. to 3/4 in. deposits the root pass. The welder

qualified for 3/16 in. to 1 in. deposited weld metal thickness range

completes the weld. Is a third welder required to deposit the weld

reinforcement, or is it permissible for the welder who completed the weld to

deposit the reinforcement?

Reply (2): The welder who completed the weld may deposit the weld

reinforcement.


Edition/Addenda:

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Question(s) and Reply(ies): Question: Does qualification of a welding procedure using 1½ in. thick plate qualify for welding up to 8 in. even when notch toughness is a

criteria?

Reply: Yes, except as further limited by QW-451.


Edition/Addenda:






Question(s) and Reply(ies): Question (1): For manual GTAW when notch toughness is a consideration,

QW-409.1 requires requalification of a WPS if there is an increase in the

heat input during production. Does this mean that WPS must be qualified

using constant monitoring devices to establish the voltage, amperage, and

travel speed at any point in time?

Reply (1): No. Constant monitoring devices to establish the voltage,

amperage, and travel speed at any point in time are not required in order to

meet the requirements of QW-409.1 for manual GTAW.

Question (2): For manual GTAW when notch toughness is a consideration,

QW-409.1 requires requalification of a WPS if there is an increase in the

heat input during production. For a multipass weld, must the maximum heat

input be established for each pass by constant monitoring during WPS

qualification?

Reply (2): No. Constant monitoring to establish maximum heat input for

each pass on multiple pass welds is not required during WPS qualification

in order to meet the requirements of QW-409.1 for manual GTAW.

Question (3): For manual GTAW when notch toughness is a consideration,QW-409.1 requires requalification of a WPS if there is an increase in heat

input during production. Is it required that an average heat input be obtained

for the full thickness of the test coupon to establish a maximum? If it is not

required, is it permissible?

Reply (3): No. Average heat input is not required to be established for the

full thickness of the test coupon to establish a maximum in order to meet

the requirements of QW-409.1 for manual GTAW. It is permissible to

establish average heat input during procedure qualification as it is

permissible to take any additional data desired by those performing the

procedure qualification.

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Question (4): If QW-409.1 does not require that average heat input be

determined, how is the heat input established for multiple pass procedure

qualification? Must it be established for each pass?

Reply (4): QW-409.1 requires requalification when an increase in heat input

occurs over that qualified. Maximum heat input is established during

procedure qualification by determination of the maximum amperage and

voltage in combination with the least travel speed, or, alternatively, themaximum volume of weld metal deposited per unit length of weld. Heat

input is not required to be determined for each pass.

Question (5): QW-410.7 requires requalification of a WPS when there is a

change in the width, frequency, or dwell time of oscillation. Does Section

IX prohibit the use of manual GTAW when notch toughness is a

requirements since QW-410.7 cannot be complied with?

Reply (5): No. Section IX does not prohibit the use of manual GTAW when

notch toughness is a requirement. The Summer 1980 Addenda to Section IX

is clear that the supplementary essential variable QW-410.7 applies only to

machine or automatic welding.

Question (6): Does QW-410.7 apply to the stringer bead technique or just to

the weave bead technique?

Reply (6): QW-410.7 applies only to machine or automatic welding where

there is a change in width, frequency, or dwell time of oscillation. The

stringer bead technique in machine or automatic welding can be viewed as a

special case of the weave bead technique where frequency and dwell time

of oscillation are at or near zero.

Question (7): The stringer bead technique is defined in Section IX as a

"type of weld bead made without appreciable weaving motion." Industry

practice seems to consider "appreciable" to be no more than two and one-

half times the diameter of the filler wire. Does Section IX agree with this

definition of "appreciable" and, if not, what does Section IX consider as

"appreciable"?

Reply (7): It is not appropriate to redefine or further define stringer bead

technique in the context of manual GTAW and the supplementary essential

variable QW-410.7. The supplementary essential variable QW-410.7

applies only to a change in width frequency or dwell time of oscillation for

machine or automatic welding. Section IX does not establish or endorse

what may or may not be industry practice.


Edition/Addenda:


Subject Description: Section IX, PWHT




Question(s) and Reply(ies): Question (1): A Manufacturer's WPS to weld P-No. 4 to P-No. 4 metals

specifies a minimum preheat temperature of 150°C (302°F) with PWHT at593°C (1099°F) to 650°C (1202 °F). The supporting PQR to this WPS

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shows PWHT was performed at 700° C (1292°F) to 720°C (1328°F). Does

the PWHT of the PQR support this WPS?

Reply (1): Yes. However, the WPS must be modified to include the range of

the PQR.

Question (2): When qualifying a WPS, a welded tensile test specimen of

SA-106 Gr. A (48,000 psi UTS) failed at 45,600 psi, which is 95% of theUTS of the pipe. The UTS of the failed specimen conforms to QW-153(d).

May this WPS be used to weld P-No. 1 to P-No. 1 metals using 70,000 psi

filler metal which is other than the A-Number and F-Number shown on the

PQR?

Reply (2): No. See QW-404.4.


Edition/Addenda:






Question(s) and Reply(ies): Question (1): Is "full pipe thickness" of QW-151.2(a) defined as that

thickness which results from the machining (within standard commercial

tolerances) required by QW-462.1(b)?

Reply (1): No. Full pipe thickness is the thickness before machining.

Question (2): Is the 3/4 in. dimension of QW-462.1(b) a minimum or arecommendation? If it is a minimum, is there a maximum? If it is a

recommendation, is there a tolerance at which the size becomes

unresponsive to the requirements of Section IX?

Reply (2): The 3/4 in. dimension is a recommendation. It is not intended to

be a minimum or maximum. As little material as necessary should be

machined to obtain parallel surfaces for testing.


Edition/Addenda:


Subject Description: Section IX, Procedure Qualification Variables




Question(s) and Reply(ies): Question (1): On the WPS, is it necessary to specify the Group Number

after the P-Number?

Reply (1): The Group Number must be listed after the P-Number when the

referencing book Section specifies impact test requirements for notchtoughness applications.

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Question (2): On QW-482, is it necessary to specify the pipe diameter

range?

Reply (2): No.

Question (3): On the WPS and PQR, is it necessary to specify or record the

minimum preheat, maximum interpass, and preheat maintenance

temperatures for materials not requiring heat treatment?

Reply (3): The Code requires all variables listed in QW-250 (by process) be

listed on the WPS, and, therefore, preheat (not less than 100F below the

PQR) shall be listed on the WPS, the preheat maintenance shall be

described (or "none" if not required) on the WPS, and the interpass

temperature (not more than 100F above the PQR) shall be listed on the

WPS when impact tests are required for notch toughness applications. The

Code requires all essential variables listed in QW-250 (by process) be listed

on the PQR, and, therefore, the actual interpass temperature shall be

recorded on the PQR when impact tests are required for notch toughness

applications.

Question (4): On the WPS and PQR, is it necessary to specify or record the

PWHT on materials when the Code does not require heat treatment?

Reply (4): When the Code does not require PWHT, the WPS and PQR

would list PWHT as not applicable.

Question (5): On QW-482 and QW-483, does travel speed pertain only to

automatic welding?

Reply (5): Travel speed is only a variable in some applications of the

supplementary essential variable QW-409.1. When the QW-409.1(a) is

employed, the travel speed is an essential variable which must be recorded

on the PQR and controlled in production within the parameters of the heat

input formula of QW-409.1(a) manual, semiautomatic, machine, and

automatic welding applications.


Edition/Addenda:


Subject Description: Section IX, Welding Positions and Thickness Qualifications




Question(s) and Reply(ies): Question (1): When applying QW-405.2 where notch toughness is required,

what positions are qualified by the welding procedure qualification test?

Reply (1): When applying QW-405.2, any position not involving the

vertical uphill progression will qualify for all positions, except those

involving the vertical uphill progression. Any position involving the vertical

uphill progression win qualify for all positions, including those involving

the vertical uphill progression. For example, qualification on a test coupon

in the 2G position will qualify 4G and 5G downhill, but not 3G uphill.

Qualification on a test coupon in 3G uphill progression will qualify 4G, 6Guphill progression, and all other positions.

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Question (2): In cases where notch toughness is required, what range of

interpass temperature is qualified by the welding procedure qualification

test?

Reply (2): When notch toughness is required, the maximum interpass

temperature that may be used in production shall be no more than 100F

higher than the maximum interpass temperature recorded during the

welding of the procedure qualification test coupon.

Question (3): In cases where cavities on base metals or weld metal are weld

repaired: (a) What is the definition of performance qualification thickness

of deposited weld metal qualified for performance qualification? (b) What

is the minimum thickness of deposited weld metal for welder performance

qualification?

Reply (3): The replies are as follows: (a) The performance qualification

thickness for deposited weld metal for weld repair is the depth of the

prepared cavity. (b) There is no limit on the minimum depth of deposited

weld metal.


Edition/Addenda:






Question(s) and Reply(ies): Question: QW-200.4 states, in part: "One or more processes or procedures

may be deleted from a production joint..." In a procedure for a GTAW root

and SMAW fill, can the GTAW root be deleted and the production joint

welded completely using SMAW?

Reply: The joint can be completely welded with SMAW provided this

process has been properly qualified for the deposited weld metal thickness

range to be used in the production joint.


Edition/Addenda:






Question(s) and Reply(ies): Question: When determining the range of base metal thickness qualified for

procedure qualification, is the thickness of the piece after welding or the

thickness tested used? For example, a weldment was made using 3/4 in.

material; however, the actual thickness tested was 0.714 in. Does one use

3/4 in. or 0.714 in. in determining the base metal thickness range qualified?

Reply: The thickness of the test coupon welded is used; therefore, in the

example cited above, one would determine the base metal thickness range

qualified using 3/4 in.

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Edition/Addenda:






Question(s) and Reply(ies): Question: If welder qualifications are reviewed during the end of each

calendar quarter (i.e., March, June, September, and December), and it is

determined that a particular welder employed and qualified only in one

welding process used that process during the beginning of that 3 month

quarter only, may his qualification be extended to the end of the next

quarter or will his qualification expire 3 months from the date he last

welded with that process in order to comply with QW-322?

Reply: His qualification will expire 3 months from the date he last welded.


Edition/Addenda:






Question(s) and Reply(ies): Question (1): If a welding procedure has been qualified at one unit of aninternational organization, can it be used at another unit of the same

organization in another country without being qualified on site at the second

unit provided that the welders at the second unit are qualified for

performance to the procedure?

Reply (1): Yes, provided the controls required by QW-201 are established

to the satisfaction of the Boiler and Pressure Vessel Committee.

Question (2): Is the purpose of a procedure qualification to prove that a

given set of parameters will produce a satisfactory weld, or to demonstrate

that the parameters plus local conditions (e.g., the efficiency of a stress

relieving furnace, or state of repair of welding plant, etc.) must be proven incombination to produce a satisfactory weld?

Reply (2): The purpose of procedure qualification is given in QW-100.1.


Edition/Addenda:


Subject Description: Section IX, QW-462.1 (a)




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Question(s) and Reply(ies): Question: A reduced section specimen was prepared per QW-462.1(a) from

a plate having a thickness of less than 1 in. The W dimension of the

specimen was measured to be 0.997 in. QW-462.1 (a) states "W = approx.

1½ in., but not less than 1 in. if it does not exceed 1 in." Does the specimen

described above meet the requirements of QW-462.1(a)?

Reply: No.

ATTENTION

The foregoing Interpretation has been further considered, and the following

corrected Question sent to the inquirer.

Correction Issued: March 30, 1982

Question: A reduced section specimen was prepared per QW-462.1(a) from

a plate having a thickness of less than 1 in. The W dimension of the

specimen was measured to be 0.997 in. QW-462.1 (a) states "W =

approximately 1½ in., but not less than 1 in. if t does not exceed 1 in ."

Does the specimen described above meet the requirements of QW-462.1

(a)?


Edition/Addenda:





Interpretation Number : IX-81-38Question(s) and Reply(ies): Question: A test coupon is prepared as follows: A 1 in. thick plate has an

1/8 in. step machined from its top. A plate 1/8 in. thick is placed into the

section of the 1 in. thick plate that has been machined and is then butted to

the unmachined portion. This forms a dissimilar thickness joint, which is

welded using the GTAW process. The coupon then satisfactorily passes the

qualification testing. Would the joint described above qualify for a base

metal thickness range of 1/16 in. to 2 in. and deposited weld metal thickness

range of 1/16 in. to 1/4 in.?

Reply: Yes.


Edition/Addenda:






Question(s) and Reply(ies): Question: A side bend test was performed on a procedure qualification test

specimen. The specimen showed open defects exceeding 1/8 in. on theconvex surface after bending. An analysis was made of the defects and

showed them to be caused by slag inclusions and blowholes. Since the

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defects can be shown to be caused by the above imperfections, can the

results of the test be considered satisfactory?

Reply: No.


Edition/Addenda:






Question(s) and Reply(ies): Question (1): What is the critical temperature range for PWHT specified in

QW-407.1?

Reply (1): For ferritic steels, QW-407.1(b), PWHT below the critical range,

is considered to be a heat treatment performed below the lower

transformation temperature. QW-407.1 (c), PWHT above the critical range,

is considered to be a heat treatment performed above the upper

transformation temperature. QW-407.1(d), PWHT above the critical range

followed by PWHT below the critical range, is a normalizing and tempering

heat treatment which is performed initially above the upper transformation

temperature and after cooling reheated to a temperature below the lower

transformation temperature.

Question (2): QW-407.1 does not mention PWHT conducted in the critical

range. Should we understand that PWHT is generally not conducted in the

critical range, or PWHT above the critical range includes PWHT in the

critical range also?

Reply (2): While QW-407.1 does not specifically address PWHT performed

within the critical range (between lower transformation and upper

transformation temperatures), it is the intent of the Code that when the

specified temperature range of the WPS is within the lower transformation

temperature, a separate qualification is required.

Question (3): QW-407.2 refers to temperature range. (a) What is the

definition of temperature range? (b) What is the allowable difference

between the PWHT of the WPS and PQR?

Reply (3): QW-407.2 states "Weldments constructed with P-No. 11 metalsand other P-Number metals for which impact tests are required, a change in

the PWHT (see QW-407.1) temperature and time range requires a PQR." (a)

See A-1 for the temperature range clarification of QW-407.1 which requires

separate qualification. (b) It is the intent of the Code that the PWHT

temperature range used in developing the PQR shall be within the PWHT

range specified on the WPS.

Question (4): QW-407.2 refers to heat treatment of base metals. Should we

understand that: (a) Where the base metal of the fabrication is subjected to

heat treatment (e.g., hot forming in the normalizing temperature range)

before welding, should the base metal used for the PQR test be subjected to

a similar heat treatment before welding? (b) Is (a) above required when the base metal for the PQR test is a piece of metal removed from the plate or

component to be fabricated, which has been subjected to a heat treatment?

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Reply (4): The base metal used for PQR test shall be of the same P-Number

and Group Number that is to be used in fabrication. The procedure

qualification test coupon shall be subjected to heat treatment essentially

equivalent to that encountered in the heat treatment of base metals and in

the fabrication of the weldments, including at least 80% of the aggregate

times at temperature(s).

Question (5): Is there a publication available on theapplication/usage/interpretation of QW-407?

Reply (5): No.


Edition/Addenda:






Question(s) and Reply(ies): Question (1): How does a fabricator specify and qualify an essential

variable consisting of a range?

Reply (1): In cases in which the essential variable consists of a range for

which the party specifying the range is responsible, he is expected to use

judgement in setting the range. This may include prior testing in confirming

this judgement for setting or specifying the range. It is not generally

practicable to have too narrow a range and meet the capabilities of control

and measuring equipment, nor too wide a range and still meet the

combinations of the several essential variables required for the application.

When qualifying a procedure having such variables, the full range of these

variables specified in the WPS need not be tested. The PQR should list the

actual range of the variable as measured during the welding of the

qualification test coupon.

Question (2): A procedure was qualified using SA-240, Type 304, with an E

308-16 electrode. If a procedure using SA-240, Type 316L, with an E316L-

16 electrode is now required (all essential variables remaining the same), is

a new or revised WPS required and does such a change require a new PQR?

Reply (2): A new WPS or a revision to the WPS would be sufficient to

document this change. Since there is no change of essential variable, norequalification or new PQR is necessary.


Edition/Addenda:






Question(s) and Reply(ies): Question: When the welder or welding operator is qualified for hardfacing

weld metal overlay in accordance with a qualified hardfacing weld metal

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overlay procedure, is he qualified to weld in accordance with all hardfacing

weld metal overlay procedures using the same welding process?

Reply: No. The essential variables for performance qualification for

hardfacing weld metal overlay are identical to those controlling the welding

procedure specification as given in QW-282.


Edition/Addenda:






Question(s) and Reply(ies): Question (1): When notch toughness tests are specified, supplemental

essential variable QW-405.2 becomes a requirement for qualification of

welding procedures utilizing certain processes. QW-120 identifies the

vertical position as the 3G position. Will qualification of a welding

procedure in the 5G position following an uphill progression satisfy QW-

405.2?

Reply (1): Yes.

Question (2): Will qualification of a welding procedure in the 6G position

following an uphill progression satisfy QW-405.2, even though the welding

groove is not vertical?

Reply (2): Yes.

Question (3): If the answers to Questions (1) and (2) are affirmative, from

which coupon should the impact specimens representing the heat affected

zone be taken, upper or lower?

Reply (3): Impact specimens are taken from the areas of maximum heat

input, which are generally about the 9 o'clock and 3 o'clock positions.


Edition/Addenda:

Para./Fig./Table No:Subject Description: Section IX, QW-442




Question(s) and Reply(ies): Question: When welding filler metal specifications, such as SFA-5.28

ER805-D2, for bare solid electrodes for use with the GMAW or GTAW

processes having chemical composition determined by analysis of the solid

wire, how are A-Numbers established for QW-442?

Reply: Where bare solid electrodes are used for the GMAW or GTAW processes, the analysis shown in the filler metal specification may be used

in establishing the A-Numbers in QW-422. However, if an actual chemical

analysis of the weld metal deposited by either of these two processes with

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such solid bare electrodes is made, that analysis shall be employed in

establishing the A-Number of the filler material in accordance with QW-

442.


Edition/Addenda:


Subject Description: Section IX, Preamble




Question(s) and Reply(ies): Question (1): QW-100.3 states that a Manufacturer may perform any new

qualifications needed for a particular contract to the Addenda mandatory for

the particular contract. These qualifications to previous Addenda may not

be used on new orders. This appears to be in conflict with the Preamble,

which requires all new qualifications to be made to the Addenda mandatoryon the date of qualification. May a manufacturer qualify all new welding

procedure specifications and performance qualifications to the requirements

of the Code Edition and Addenda made mandatory at the date of order?

Reply (1): Yes.

Question (2): May a Manufacturer qualify all new welding procedures and

welders or welding operators for a specific job to any Code Edition and

Addenda after the Code Edition and Addenda made mandatory at the date

of order?

Reply (2): Yes.


Edition/Addenda:


Subject Description: Section IX, Plug Welds




Question(s) and Reply(ies): Question (1): A manufacturer has PQR's available from previously qualifiedgroove weld procedures. Could these PQR's be used to support procedures

written to fabricate plug welds, all other essential variables being the same?

Reply (1): Yes.

Question (2): What type of test is required for welder qualification when

plug welds are to be used in production?

Reply (2): The welder should be qualified by a groove weld test joint in

which range of thickness of deposited weld metal qualified encompasses

that thickness required by the production joint.

Question (3): What method of examination should be used to examine the

quality of the production weld?

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Reply (3): The method of examination of production welds is specified by

the fabrication code (i.e., Section VIII - Divisions 1 and 2, B31.1, etc.)


Edition/Addenda:






Question(s) and Reply(ies): Question (1): Concerning the renewal of performance qualification given in

QW-322, must the welder be in the continuous employ of the

Manufacturer?

Reply (1): No.

Question (2): If a welder leaves the employ of a Manufacturer and later

returns to that same Manufacturer, can his qualifications be renewed for all

previous qualifications per QW-322?

Reply (2): Yes.

Question (3): When a welder is being tested for renewal of his

qualifications, is it necessary to test him using all the essential variables for

which he was qualified using a specific process?

Reply (3): No. QW-322 allows the welding of a single test joint to reinstate

the welder's previous qualifications for a specific process.


Edition/Addenda:


Subject Description: Section IX, Visual Examination




Question(s) and Reply(ies): Question: Is it necessary to achieve complete penetration for single weldedtest coupons throughout their entire length, or only where the specimens are

to be removed?

Reply: Complete penetration for single welded test coupons is required

throughout their entire length. See QW-301.2, QW-191.2.2(a)(1), and QW-

452.1 Note (1).


Edition/Addenda:




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Question(s) and Reply(ies): Question: QW-402.1 states, "A change in the type of groove (Vee-groove,

U-groove, single-bevel, double-bevel, etc.)." This variable is a nonessential

variable for SMAW, GTAW, GMAW, and FCAW. Currently, a

Manufacturer states, "All groove designs" under joint design in the WPS. Is

this practice acceptable, or is it required to either include these in the WPSor reference another document that illus-trates all possible joint

configurations?

Reply: The practice of stating "all groove designs" on the WPS to satisfy

QW-402.1 is not acceptable. Because the WPS is for the guidance of the

welder or welding operator, a Manufacturer must state on the WPS the

types of joints permitted in production. Alternatively, a reference to a

drawing or other document that describes the allowable production joints is

permitted.

Standard Designation: BPV Section IXEdition/Addenda:


Subject Description: Section IX, QW-191.2.2




Question(s) and Reply(ies): Question (1): Can permissible maximum defect size be measured directly

from the charts of rounded indications in Appendix I of QW-191.2.2?

Reply (1): No. It is not intended that the sketches be sized to determineacceptance criteria. Criteria for acceptance of rounded indications are given

in the text of QW-191.2.2(b).

Question (2): What is the maximum size of a single rounded indication in

welds of 3.5 mm (0.1365 in.) thickness and 6.0 mm (0.234 in.) thickness?

Reply (2): See QW-191.2.2(b).

Question (3): What is the minimum separation between two rounded

indications, each of the maximum permissible dimension?

Reply (3): There is no requirement in Section IX governing separation ofrounded indications.

Question (4): QW-191.2.2(b)(3) states that rounded indications less than

1/32 in. in maximum diameter shall not be considered in the 1/8 in. or

greater material thickness range. Does this statement override the standards

given in QW-191.2.2(b)(1)?

Reply (4): Yes. It is not applicable for thinner materials.


Edition/Addenda:



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Question(s) and Reply(ies): Question: How does QW-404.9 affect the qualification of procedures for

SAW using the various grades (classifications) of stainless steels listed in

SFA-5.9 Table 1?

Reply: Requalification of a WPS to QW-404.9 is required under the

following conditions: (a) Any change in flux classification listed in an SFA

Specification or a change to a flux not listed in an SFA Specification. (b)

Any change of electrode classification listed in Table 1 of SFA-5.9 that

changes the deposited weld metal chemistry beyond that specified in the

WPS as an A-Number designation. For a change from a bare cored to a

stranded electrode, or vice versa, in the same electrode classification,

requalification is not required.


Edition/Addenda:






Question(s) and Reply(ies): Question (1): Must a welder be qualified on small diameter pipe (i.e., less

than NPS 2½) if he is required to weld the root pass of a set-on nozzle that

consists of a 1½ in. double extra strong coupling that is larger than 2-7/8 in.

O.D.?

Reply (1): No.

Question (2): Does QW-452.3 allow a welder qualified on 10 in. diameter

pipe to weld a small diameter (i.e., less than 2-7/8 in. O.D.) set on nozzle to

a shell whose outside diameter is greater than 2-7/8 in.?

Reply (2): No.

Question (3): Regarding performance qualification, are thickness limitations

linked to each position? For example, a welder is presently qualified to weld

unlimited thicknesses in the flat, horizontal, and vertical positions. If a

separate test is given to qualify him for the overhead position, must this test

be given a thickness of ¾ in. or greater to qualify for unlimited thicknesses

in this position?

Reply (3): Yes.


Edition/Addenda:


Subject Description: Section IX, Peening


Record Number: BC-81-595; BC-81-642

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Question(s) and Reply(ies): Question: Is the mechanical removal of slag defined as peening, and must it

be addressed as such on the WPS under Technique (QW-410)?

Reply: No.


Edition/Addenda:






Question(s) and Reply(ies): Question (1): If a procedure for the GTAW, GMAW, or SMAW process is

qualified in accordance with Section IX, utilizing a 6 in. diameter pipe

coupon with a single vee groove joint, is the procedure qualified for alldiameters of pipe if the essential variables of the procedure remain the

same?

Reply (1): Yes.

Question (2): If a welder is qualified in accordance with the requirements of

Section IX on a 6 in. diameter test coupon with a single vee groove joint for

the GTAW, SMAW, or GMAW process, does he require requalification if

the production weld he is making is on a pipe with an outside diameter of

below 2-7/8 in. with a single vee groove?

Reply (2): Yes.


Edition/Addenda:






Question(s) and Reply(ies): Question: Occasionally, slag is trapped between the backing ring or strapand the base metal during the welding of a welder's qualification test

assembly. When the initial radiograph with the backing in place shows the

above condition, can the backing ring or strap be removed and the weld test

coupon subsequently be resubmitted for additional radiography to satisfy

the welder performance qualification test?

Reply: Yes.


Edition/Addenda:



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Question(s) and Reply(ies): Question (1): Do the rules of Section IX require that the dimensions of

tensile test specimens be recorded on PQR's or be available as part of the

records, or is it sufficient to only have recorded the tensile strength? This

question is both for the case where procedure qualification was performed prior to 1962, but met the requirements of the 1962 Edition of Section IX,

and for the case where procedure qualification was performed after 1962,

but met the requirements of the Edition and Addenda in effect at the time of

qualification.

Reply (1): It is sufficient to have recorded the tensile strength of each test

specimen on the PQR's.

Question (2): For PQR's qualified prior to 1962 that meet the requirements

of the 1962 Edition of Section IX and for PQR's qualified in 1962 and later

that meet the requirements of the Edition and Addenda of Section IX in

effect at the time of qualification, is it required that the followingnonessential variables be recorded on the PQR for the SMAW and GTAW

procedures? (a) voltage (b) current

Reply (2): (a) No (b) No

Question (3): Is it permissible under the rules of Section IX to use PQR's

prepared and certified in 1959 and later to qualify other WPS's prepared in

1981, provided the essential and supplementary essential variables (when

required) specified in the Edition and Addenda of Section IX in effect at the

time the 1981 WPS was written were recorded on the PQR's that had been

prepared and certified at earlier dates?

Reply (3): Yes.

Question (4): When using a PQR prepared in 1959 or later to qualify a WPS

prepared and used in 1981, do the rules of Section IX require a Certificate

Holder to provide to the Authorized Inspector a copy of the original WPS

(dated 1959 or later and no longer in use) as well as a copy of the Edition

and Addenda of Section IX in effect at the time the PQR was prepared?

Reply (4): No.


Edition/Addenda:


Subject Description: Section IX, QW-214 and QW-216




Question(s) and Reply(ies): Question (1): If SFA-5.13 RCoCr-A filler metal is used for weld metal

overlay, what means shall be used to assure conformance with Section IX?

Reply (1): The testing shall be performed in accordance with therequirements of a hard facing weld metal overlay.

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Question (2): A weld metal overlay is termed corrosion resistant, e.g.,

aluminum bronze; however, the overlay material is of a brittle nature and

will undoubtedly break if subjected to the required bend testing. By what

means may conformance with Section IX be assured?

Reply (2): The material is termed corrosion resistant. Therefore, it must be

tested in accordance with QW-214.


Edition/Addenda:


Subject Description: Section IX, QW-466.2, 1980 Edition With Winter 1981 Addenda




Question(s) and Reply(ies): Question: When carrying out welding procedure qualification tests per

Section IX for 6 mm thick unalloyed titanium (SB-265, P-No. 51) plates

using GTAW process with filler SFA-5.16 ERTi-1, what is the required

mandrel diameter using the guided bend roller jig according to QW-466.2?

Reply: The diameter of the mandrel of the guided bend roller jig (QW-

466.2) shall be 8t (see the Winter 1981 Addenda to Section IX).


Edition/Addenda:






Question(s) and Reply(ies): Question (1): Does a PQR for corrosion resistant weld metal overlay that

utilized an SFA-5.9 E (b R308 filler metal support a WPS that specifies

SFA-5.9 ER309 filler metal?

Reply (1): No. Separate qualification is required for each AWS

classification.

Question (2): Does a PQR for corrosion resistant weld metal overlay that

utilized an SFA-5.4 E308-xx filler metal support a WPS that specifies

SFA-5.4 E309-xx filler metal?

Reply (2): No. Separate qualification is required for each AWS

classification.

Question (3): Does reference to "...Each AISI type of A-No. 8 or A-No. 9..."

of QW-282.2(c) refer to QW-442 or to base metal specifications?

Reply (3): This phrase refers to QW-442 in Section IX (each "AISI type" is

intended to be "AWS classification").


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Edition/Addenda:





Interpretation Number : IX-82-16Question(s) and Reply(ies): Question: A tensile specimen broke in the weld metal at a tensile strength

below the minimum strength of the base metal. When the requirements of

QW-153.1(c) are not applicable, does this specimen pass the tension test?

Reply: No.


Edition/Addenda:






Question(s) and Reply(ies): Question: Is a welder required to take a small diameter pipe test to weld a

pipe through a plate when the weld preparation on the plate is less than

2-7/8 in O.D. and the welds are reinforced with fillet welds?

Reply: No.


Edition/Addenda:


Subject Description: Section IX, QW-462.2(a)




Question(s) and Reply(ies): Question: Is it permissible to use subsize thickness side bends for test

coupons welded in the 1/16 in. to 3/8 in. inclusive range?

Reply: Side bends are only permitted for test coupons 3/8 in. thick and

greater.


Edition/Addenda:


Subject Description: Section IX, QW-214, QW-216, QW-407, and QW-492, 1980 Edition

Through Summer 1981 Addenda

Date Issued: 03/12/1982Record Number: BC-81-703


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Question(s) and Reply(ies): Question (1): QW-216.1 states that the minimum hard facing weld metal

overlay thickness shall be as specified in the WPS. Is the maximum hard

facing weld metal overlay thickness qualification unlimited?

Reply (1): Yes. The minimum thickness qualified is also defined in QW-

462.5 as the thickness corresponding to the upper surface of the material

used for chemical analysis. The larger of the minimum thicknesses specified

shall govern.

Question (2): The requirements of Section IX do not address the maximum

corrosion resistant weld overlay thickness qualified. Is the maximum

thickness qualified unlimited?

Reply (2): Yes.

Question (3): Neither QW-214 nor QW-281 address the minimum corrosion

resistant weld metal overlay thickness qualified. Is there a minimum

thickness qualification?

Reply (3): Yes. The minimum thickness qualified is defined in QW-462.5

as the thickness corresponding to the upper surface of the material used for

chemical analysis. QW-462.5 is referenced by QW-214.3.

Question (4): For procedure qualification of dissimilar metals, one groove

face has been buttered (as defined in QW-492) with 0.187 in. of weld metal.

Based on this, are the minimum and maximum thicknesses for the buttered

portion unlimited?

Reply (4): The maximum thickness of the buttering is unlimited. The

minimum thickness shall be sufficient to provide a suitable transition weld

deposit for subsequent completion of the joint, as provided in the definition

for buttering in QW-492.

Question (5): QW-407 defines changes in PWHT that require

requalification of procedures. The critical range is referenced in QW-407.1

and QW-407.4 (prior to the Winter 1981 Addenda). Is this critical range

defined as the PWHT range identified in other Sections of the Code (i.e.,

Section III Table NB-4622.1-1)?

Reply (5): The critical range referenced in QW-407.1 and QW-407.4 refers

to the range between the lower and upper transformation temperatures for

P-Nos. 1, 3, 4, 5, 6, 9, 10, and 11 materials. This range is not the same as

the PWHT range identified in other sections of the Code.


Edition/Addenda:






Question(s) and Reply(ies): Question (1): QW-151.1 requires one tensile specimen for thicknesses up to

and including 1 in., while QW-451.1 requires two tension tests for the samethickness range. Which is correct?

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Reply (1): Both are correct. The Code distinguished between tension tests

(QW-451.1) and the tensile specimens (QW-150) that are used to make up a

tension test.

Question (2): In the test coupon thickness range of over 1 to 1-1/4 in., how

many turned tensile specimens are required for each tension test?

Reply (2): Two.

Question (3): In performing tension tests on a weldment made with two

processes, is QW-451.1 Note (4)(b) satisfied if a portion of the weld deposit

from each welding process is included in each of the tension tests required

by QW-451.1?

Reply (3): Yes.

Question (4): If multiple turned specimens are used to represent a single

tension test removed from a test coupon that is welded with two processes,

must each turned specimen contain weld metal from each process to satisfy

the requirements of QW-451.1 Note (4)(b)?

Reply (4): No.

Question (5): In the case of a test coupon welded using two welding

processes, is the requirement of QW-451.1 Note (4)(d) that toughness

testing be applied with respect to each welding process or procedure

satisfied with respect to impact test specimens if only a portion of the

impact test specimens contains one of the welding processes?

Reply (5): Yes.


Edition/Addenda:




Record Number: BC-8

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