ASME SC IV – Heating Boilers

Update on Section IVChiefs Technical Meeting

October 3, 2013

ASME SC IV – Heating Boilers

Topics to be Covered• Membership and Balance of Interest• Committee Structure

• Subgroups• Task Groups

• Current Items of Interest• Section VI, Care & Operation Rewrite• Safety Valve Capacity Determination• New Appendix on Economizers• Update on Cast Aluminum Boilers• Miniature Boilers

ASME SC IV – Heating Boilers

• 21 Members• 16 Regular Members• 2 Delegates• 1 Honorary• 2 Alternates

Membership

ASME SC IV – Heating Boilers

Balance of Interest• AC Designer-Constructor – 1• AH Insurance – 3• AT Regulatory – 2• MC Manufacturer (Cast) -2• MH Manufacturer (Water Htrs.) – 3• MW Manufacturer (Wrought) – 5• AF General – 0__________________________________• Delegates – 2• Honary Members – 1• Alternates - 2

0.625

• 0.0625• 0.1875• 0.125• 0.125• 0.1875• 0.3125

ASME SC IV – Heating BoilersCommittee Structure

• 5 Sub-Groups• SG Care and Operation: 7 members • SG Materials: 8 members• SG Welded Boilers: 10 members, 1

Contributing Member• SG Cast Iron: 9 members, 1 alternate• SG Water Heaters: 8 members

• Task Groups• Reference Standards• Others As Needed

• Miscellaneous Pressure Parts• Code Edition and Addenda

Questions on Section IV Organization?

Current Items of Interest

Item 12-1918, Section VI Rewrite

• Who is the customer or User? –Owner/Operator/Service/Installer

• Focus of RewriteReview current Section VI, CSD-1and NBIC for consistency

• Developed an outline of thecontents for the rewrite of Section VI

• Assigned leaders to the variouschapters

Section VI Rewrite

1. Glossary/Definitions2. Types of Boilers3. Fuels4. Boiler Room Facilities5. Installation6. Systems/Accessories

1. Steam2. Hot Water

7. Controls & Instrumentation8. Start Up / Commissioning9. Water Treatment10.Inspection / Repair

Revised Outline1. General2. Types of Boilers3. Accessories &

Installation4. Fuels5. Fuel Burning Eqpt. and

Controls6. Boiler Room Facilities7. O&M & Repairs – Steam8. O&M & Repairs – HW9. Water Treatment

Current Outline

Section VI RewriteNew Content

• 2.0 Types of Boilers• Discussion of Space Heating vs Water Heaters

• Copper Fin and Coil Type Boilers• Condensing vs Non-Condensing

• 3.0 Fuels• Address Digester Gas• Flue Gas Recirculation

Section VI Rewrite

Current Status• 2 Chapters in Rough Draft

• Types of Boilers• Boiler room Facilities

• SG meeting scheduled for 10/9/13

• Coordinating with Bill Lowry on Section VII rewrite

Questions on Section VI Re-write?

Current Items of InterestSafety Valve Capacity Determination

3 Concurrent Items

13-181, Incorporation of CC 2583Alternate HW Relief Valve SizingLB 13-1327RC1 Closed 10/1

13-1025, Revise Steam Safety Valve SizingLB 13-1989 Closes 10/5

13-1473, Relocation of Table HG-400.1 to non-mandatory Appendix A-100

History of Heating Surface Based Relief Capacity

Original 1914 Code:6 Lb/Hr per Ft^2 for Watertube5 Lb/Hr for all other

1st Revision 1918 Code:6 Lb/Hr per Ft^2 for Watertube5 Lb/Hr for all other > 100 psi3 Lb/Hr for all other < 100 psi

History of Heating Surface Based Relief Capacity

2st Revision 1937 Code:

1st indication of need for change (Section I):1980 Kemper Inquiry re Fluidized Bed Boilersa) What parts of the boiler are considered to be

“heating surface”? Are these areas outlined in ASME Section I, PG-70?

b) If the heating surface is known, what steam generating capacity per square foot should I use in calculating the proper relieving capacity of the safety valves?

Kemper Inquiry Resulted in CC 1889

1987 Inquiry from B&W

Incorporation of CC 1889 & 2057 – 1993 Addenda

Section IV Change comes Slowly• 95-213 Weben-Jarco Inquiry

Copper Fin Tube Boileroutput 800 lb/hr240 ft^2 HS x 16 = 3840 lb/hr

• Q: Does Table HG-400.1 apply to copper fin tube water boilers?

• R: Yes

98-492 Cleaver Brooks request for Code ChangeClearfire Condensing Boiler

Proposal to delete heating surface based capacity and place Table HG-400.1 in a non-mandatory appendix.

Failed, Item Closed.

As an alternative to 98-492, 01-160 Extended Heating Surface Proposal approved as alternative

• Footnote (d) added to Table HG-400.1

• 07-765 European Condensing Boiler

Safety Valve Capacity DeterminationCurrent Actions

• 13-181 Incorporation of CC 2583 into HG-400.2

Safety Valve Capacity DeterminationCurrent Actions

• 13-1025 Parallels 12-181 but for steam• Revise HG-400.1(d) same as HG-400.2(e)• Delete Table HG-400.1• Delete HG-403(d) regarding extended

heating surface generating capacity• Delete extended heating surface from

stamping in Fig. HG-530.2&.3

13-1025 revision to HG-401.1

Safety Valve Capacity DeterminationCurrent Actions 13-1473

Questions on Safety Valve Capacity?

New Appendix on EconomizersCurrent Actions

• 11-1347 Adds new Section IV Appendix on Economizers. LB 13-1989 Closes 10/5/13

• 12-1445 Adds new Section I Appendix on Economizers. LB 13-2028 Closes 10/8/13, SGGR w/ BPV I Comment only

• 11-1347 Adds new Section IV Appendix on Economizers

• 11-1347

• 11-1347

• 11-1347

• 11-1347

• 11-1347

• 12-1445 Adds new Section I Part PFE on Economizers

• More Complicated than IV due to BEP and prohibition on use of Austenitic Stainless Steels in Water Wetted service.• Revise Preamble to address economizers• Revise Fig. PG-58.3.1(b) to show economizers

within and outside scope of BEP• Add new Part PFE• Section VIII economizers are a long standing

practice based on Interpretation I-78-18

Question 3 from Interpretation I-78-18

Reasons for Use of Section VIII• Use of Austenitic Stainless

Steel• UM Certification• Section VIII water service

relief valves

Allowing economizers outside Section I / BEP scopeFits directly into Section VIII U-1(h)

This proposal has modified Section VIII distinction to be dependent on location of feedwater regulator.

Questions about Economizer Appendices?

Update on Cast Aluminum Boilers• Previous Presentation 10/21/2010• Reported difficulty incorporating

Code Cases due to lack of material data

• Only one aluminum foundry existed• Taizhou Rising Sun Machinery,

Linhai City, China

Update on Cast Aluminum Boilers• Three more foundries have

become accredited• Taizhou JJ Machinery, Sanmen

China• MGG Netherlands B.V., Tegelen

Netherlands• MGG Netherlands B.V., Nieuw

Bergen, Netherlands

Anulled Cast Aluminum Code Cases

CC 2153 SB108 Semi Permanent Mold Cast A356.0 - T61 temperCC 2344 SB 26 Sand Cast A356.0 - T6 temper

• Cases have been annulled with effective date of 1-1-2014. • No effort to incorporate.• Notice sent to all Cast Aluminum Certificate Holders notifying them of

the pending annulment.• Note added to Code Cases informing users of scheduled annulment

CC 2382 EN 43000 Sand Cast AC-AlSi10Mg(a) - F temper

• Same as above but this material is incorporated.

Status of Cast Aluminum Code Cases

CC 2483 EN 42000 Sand Cast AC-AlSi7Mg - F Temper• 12-801 and 12-1554 Open items to Annul and Incorporate

CC 2677 EN 44300 Pressure Die Cast AC-AlSi12(Fe) F temper• 12-802 and 12-1555 Open items to Annul and Incorporate

Both these Cases are hung up at Section II.

Final Item09-32 Miniature Boilers

• Proposal to add HM stamp• Exempt from inspection by AI• Inspection by CI• 10 negative comments from NB

members• Held open to consider SC VIII item 07-

245 Scope • Voted to close at 8-14-13 meeting with 1

neg Heino.(sometimes we do listen)