Section Ⅴ : Adopt ASTM E2700-09 Standard Practice for Contact Ultrasonic Testing of Welds
⑥ PWHT
炉内PWHTでの熱源は、ガス又は電気が用いられる。局部PWHTでの熱源は、イン ダクションヒーターが用いられる。局部PWHTでのヒートバンドは狭いために問題が発 生することがある。局部PWHTの技術的な要求は、AWS D10.10において提供されてい る。
⑦ WPQ
ASME B&PV Code Section IXにおいて、Gr 91はP-5BからP-15Eに、Gr 23はP-15C に、Gr 92はP-15Eに改正されている。
⑧ Examination & Inspection
ほとんどの継手において、目視試験と放射線透過試験が要求されているが、従来の Cr-Mo鋼ではなく新しい技術だということを認識しなければならない。ASME B&PV Codeは完全ではなく、新たな知見に基づいたCodeの改正が行われていることを認識し なければならない。
1.3. Pipe Corrosion
外径10 in. 、運転温度95°F、運転圧力50 psiの炭素鋼配管のサポート（パイプクラ ンプ）部において、配管外面からの全面腐食によりリークが発生した。配管は、17年間 運転され、その間の湿度の影響で配管外面から腐食したものと推定されている。
1.4. Creep Crack
26 in.主蒸気配管の管台に接続される6 in.分岐配管の溶接部の管台側のHAZからクリ ープ割れが発生した。管台はP22で、分岐配管は炭素鋼で製作され、管台はテーパーを 設けて分岐配管と溶接されている。運転時間は207,000時間、運転圧力は2,400 psi、運 転温度は1,000°Fであった。
2. B31.1 SG on Design
〔開催日〕2010年5月18日（火）
SG on Designでの対応状況等について下記のアイテムの状況報告があった。
2.1. Inquiries Tracking
No. 件 名 備 考
08-1148 Intent Interpretation of B31.1 Paragraph 122.8 10-826 Inquiry, ASME B31.1-2007, Paragraph 104.3.1, Area
Reinforcement Calculation for Branch Outlet Fittings
2.2. Revision
2.2.1. B31 Standards Committee Ballots Level Tracking
No. 件 名 備 考
08-172 MDC Recommended Wall Thickness Equation 08-173 Paragraph 122.1.5, Boiler Drains
08-1368 Remove L/U Warning from Paragraph 119.7.1 08-1372 Add Reference to Paragraph 102.2.4 into Paragraph
104.7.2
2.2.2. B31.1 Section Committee Ballots Level Tracking
No. 件 名 備 考
02-77 Revise Paragraph 102.2.2 & 101.3.2(a) for Consideration of Predictable Operating Conditions and Transients
02-105 Requirements for Expansion Joints 02-3307 AppendixⅡ Sample Problem Correction
03-296 New Paragraph and Definition for Packaged Equipment Piping
03-974 Paragraph 121.1, Temporary Support Using Non-metallic Material
05-749 Consideration of Thermal Discontinuity Stresses in Socket Welds（Paragraph 111.3）
05-754 Flare, Flareless Compression Joints > 2” OD 06-687 Paragraph 102.3.2(B.2) Building Settlement
06-1228 Review Paragraph 104.8 and 119.7.1 to Eliminate Need for Two Equations
06-1232 Paragraph 104.1.2, Add Consideration of Undercut
07-1510 Paragraph 121.2(H) and 121.8.2(B), Allowable Stress for Support Welds
08-421 Review of Paragraph 104.3.1 (G.6.1) Equation
08-1371 Req. Appendix 5 Paragraph 6.3.2 in B31.1 Paragraph 121 09-340 Add Reference to B31 E
2.2.3. Works in Progress Tracking
No. 件 名 備 考
02-75 Paragraph 102.2.4, Addition of “Predicted” and
“Unpredicted”
02-76 Paragraph 102.2.4, Permit Single Event witch Encompass
（A）and（B）
02-93 Paragraph 122, Blow-off Valves Rewrite 02-106 Paragraph 101, Design Conditions 02-113 Revision to Figure 104.3.1（G）
02-144 Basis of Allowable Stress
03-187 Revision of Paragraph 102.3.3.（A）, Occasional Loads in The Creep Regime
03-305 Metrication of Appendix Ⅵ 03-358 Metrication of Chapter Ⅱ 03-359 Metrication of Appendix D 03-360 Metrication of Appendix Ⅱ
03-361 Metrication of Appendix Ⅱ Sample Problem
03-976 Appendix Adding Classes and Joint Efficiency Factors to Appendix A
04-207 Jurisdictional Boundary between Pipe Support and Pressure Bounbary
04-1335 Temperature Rates of Change - Table 102.3.2（c）&
Paragraph 119.7.1（A.3）
04-1502 Relief from Branch Connection Weld Size Connection 05-204 Review of Standards Listed in Appendix F and Table 126, 06-181 Partial Penetration Welds
06-688 Add Reference to Paragraph 101.1 06-689 Appendix Ⅳ Reference Review
06-1229 Paragraph 102.4.5, Wall Thickness at any Location on Bend
06-1230 Table 126.1 – Validate Legitimacy of NFPA References 06-1327 Clarify Definition of S(E) in Creep Range
07-177 Clarify Definition of N and S(E) Definition Conflict with Note 7
07-1476 Qualifications of The Designer
07-1511 Paragraph 121.1, Thread Engagement for Bolts
07-1513 Paragraph 101.7.2, Expansion Joint Type Exclusions for BEP
07-1514 Paragraph V-6.5.1 & Figure V-6.5, Definition of “S”
08-977 Paragraph 102.2.4 – Parameters for Design Criteria 08-978 Relocate Paragraph 102.3.3 & Re-word Paragraph 104.8.2
– Short-Term Sustained Loads 08-1288 Revise Table 104.1.2 (A) y-factors
08-1369 B16.34 Cold Water Rating to Paragraph 122.1.7 09-341 Add Reference to B31 J
09-1071 Limit of Controls for Over Pressure Protection Paragraph 122.6.1
09-1662 Revise Fatigue Rules Above 100,000 Cycles
09-1663 Paragraph 106.1 Design Consideration for Weld on Branch Connections for Figure 127.4.8 (G)
10-8 Suggested Revision by Code User for Paragraph 122.1.2 (A.2) and (A.3)
10-302 Revise Appendix 4 Per Updated References
10-305 Reference to Paragraph 104.3.1 (d) - Area Replacement Rules Review of ASME BPV III Record #04-1612 10-306 Update Reference to BPV Section VIII - 2
10-307 Consistency in Reference to Stress Range
2.3. Code Case
2.3.1. Open Code Case Items Tracking
No. 件 名 備 考
10-738 Alternate Rules for High Cycle Fatigue
10-739 Alternate Rules for Pressure Design of Heavy Wall Wyes, Laterals, and Tees
3. B31.1 SC
〔開催日〕2010年5月19日（水）
下記のアイテムの対応状況等について報告があった。担当Sub-GroupのDEはDesign を、FEはFabrication &Examinationを、GRはGeneral Requirement を、MTL は Materialsを、SAはSpecial Assignmentsを、OMはOperation & Maintenanceを示し ている。
3.1. Editorial Revisions & Errata Tracking
No. 件 名 担 当
Sub-Group
- なし -
3.2. Inquiries Tracking
No. 件 名 担 当
Sub-Group 03-23 Interpretation, Paragraph 137.2, HRSG Piping Test GR 05-425 Interpretation, Table A-3, Stainless Steels, A351, CFM8M
Casting MTL
08-434 Revision to Interpretation Issued Via Record 04-1467 GR 08-1148 Intent Interpretation of B31.1 Paragraph 122.8 DE 09-1513 Interpretation Regarding PCC-2 2008 OM 10-709 Paragraph 136.4, Examination Methods of Weld FE
10-731 PWHT Requirements for 15E FE
10-732 Inquiry, NDE Requirements for P-No. 3, 4, 5A, 5B and 15E
after PWHT FE
10-826 Inquiry, ASME B31.1-2007, Paragraph 104.3.1, Area
Reinforcement Calculation for Branch Outlet Fittings DE
3.3. Revision
3.3.1. B31 Standards Committee Ballots Level Tracking
No. 件 名 担 当
Sub-Group 02-3304 Paragraph 111.2.3 and 127.4, Undercut Rules FE 05-1329 Extend Allowable Stresses in Table A-8 up to 1650F MTL
07-981 Addition of PE 4710 to Appendix III SA 08-172 MDC Recommended Wall Thickness Equation DE
08-173 Paragraph 122.1.5, Boiler Drains DE
08-1368 Remove L/U Warning from Paragraph 119.7.1 DE 08-1372 Add Reference to Paragraph 102.2.4 into Paragraph
104.7.2 DE
3.3.2. B31.1 Section Committee Ballots Level Tracking
No. 件 名 担 当
Sub-Group
02-77
Revise Paragraph 102.2.2 & 101.3.2(a) for Consideration of
Predictable Operating Conditions and Transients DE
02-85 Paragraph 107.8.3, Reconcile with SC Ⅷ, Div. 1, UG-125
Through UG-137 GR
02-86 Making Appendix III a Mandatory Appendix SA 02-101 New Paragraph 122.15 Circulating & Service Water
Systems GR
02-105 Requirements for Expansion Joints DE
02-111 QC for Non-BEP Ad Hoc
TG 02-133 Figure 127.4.4（c）, Socket Weld Fitting FE 02-159 Figure 127.4.4（B）, Slip-on Flange Assembly Details FE 02-161 Updating Appendices B & C for New Materials MTL 02-172 Review of B16.26 to Add to Appendix F SA 02-3307 AppendixⅡ Sample Problem Correction DE 02-4268 Hydrostatic Test for Underground Installation FE
03-296 New Paragraph and Definition for Packaged Equipment
Piping DE
03-365 Use of B31.1 Code Case on BEP GR
03-372 Ammonia Piping Exclusion GR
03-974 Paragraph 121.1, Temporary Support Using Non-metallic
Material DE
03-985 Review of Figure 100.1.2（A）and（B） GR
03-1226 Clarification of Filler Composition Requirement in
Paragraph 127.2.1（G） FE
03-1530 Paragraph 136.1.2 Verification by Owner’s Inspector FE 03-1615 Update Table C-1 and C-2 to Add New Materials and Make
Corrections to Existing Materials MTL
04-180 Paragraph 132 Temper Bead Welding (Alt. to PWHT for
P-No. 1 to P-No. 5A) FE
05-200 Paragraph 129 PBHT CSEFS（relates to PG-19, SC-I） FE 05-747 Weld End Transition – B16.25, Figure 127.4.2 FE 05-749 Consideration of Thermal Discontinuity Stresses in
Socket Welds（Paragraph 111.3） DE
05-753 Definition of Ferrous vs. Nonferrous MTL 05-754 Flare, Flareless Compression Joints > 2” OD DE
05-1341 Reference to A13 FE
06-179 Table 129.3.2, Lower Critical Temperature for P No. 4 Gr. 1
Materials FE
06-687 Paragraph 102.3.2(B.2) Building Settlement DE 06-1228 Review Paragraph 104.8 and 119.7.1 to Eliminate Need for
Two Equations DE
06-1232 Paragraph 104.1.2, Add Consideration of Undercut DE 06-1257 Review of Appendix V – Paragraph V-4.0 OM 07-174 Removal of BEP Note on A333 Gr. 6 MTL 07-176 Adopt Use of “Latest Edition” Text (ASME Standards
Only) GR
07-1510 Paragraph 121.2(H) and 121.8.2(B), Allowable Stress for
Support Welds DE
07-1517 Increase Maximum Temperature Allowable Stress Values
of P22 to 1200F MTL
07-1597 Incorporation of PG-19 Rules FE
07-1601 Review of Appendix V - Paragraph V-5.0 OM 07-1605 Review of Appendix V, Paragraph V-10.0 OM 07-1607 Review of Appendix V, Paragraph V-12.0 OM 08-421 Review of Paragraph 104.3.1 (G.6.1) Equation DE 08-988 Paragraph 137.3.1 Boiler External Piping Hydrostatic
Testing Requirement FE
08-1371 Req. Appendix 5 Paragraph 6.3.2 in B31.1 Paragraph 121 DE
08-1409 Add Alloy S 32750 and A479 MTL
09-340 Add Reference to B31 E DE
09-343 NDE of Oxidized Surfaces FE
09-346 Repair & Acceptance Criteria FE
09-979 Revise Paragraph 127.4.1 (c) Tack Welds by an
Unqualified Welder FE
09-980 Incorporation of HDPE Examination Criteria FE 09-1414 Modifications to V-6.0 Piping Position History and New
Chapter Paragraph OM
09-1474 Modifications to V-11.0 High Temperature Creep and New
Chapter Paragraph OM
09-1671 Update Appendix F for MSS SP 42, SP 61 and SP 75
SA
09-1678 Revision of Paragraph 137.4.5 Regarding Hydrostatic Test
Pressure FE
3.3.3. Works in Progress Tracking
No. 券 名 担 当
Sub-Group 02-75 Paragraph 102.2.4, Addition of “Predicted” and
“Unpredicted” DE
02-76 Paragraph 102.2.4, Permit Single Event witch Encompass
（A）and（B） DE
02-93 Paragraph 122, Blow-off Valves Rewrite DE
02-97 Appendix A Metrication MTL
02-106 Paragraph 101, Design Conditions DE
02-113 Revision to Figure 104.3.1（G） DE
02-144 Basis of Allowable Stress DE
02-163 Allowable Stresses for Dual Certified Materials MTL 02-168 Review of MSS Standards（Hydrotest & Trans. Pressure
Allowances） GR
02-169 Review of B 16 Standards（Hydrotest and Transient
Pressure Allowances） GR
02-177 Design Changes to Fabrication Requirements FE
02-179 Incorporation of CC TC94-02 MTL
02-3312 P92, F92 MTL
02-3315 A356 Allowable Stresses MTL
03-187 Revision of Paragraph 102.3.3.（A）, Occasional Loads in
The Creep Regime DE
03-294 Material Criteria for Boiler External Piping MTL
03-297 Metrication of Chapter V FE
03-298 Metrication of Chapter Ⅵ FE
03-299 Metrication of Chapter Ⅰ GR
03-301 Metrication of Appendix G GR
03-302 Metrication of Appendix Ⅲ SA
03-303 Metrication of Appendix Ⅳ SA
03-304 Metrication of Appendix Ⅴ SA
03-305 Metrication of Appendix Ⅵ DE
03-306 Metrication of Appendix Ⅶ SA
03-314 Update AppendixⅢ, Table 4.1.1 SA
03-315 Update AppendixⅢ, Table 4.2.3 SA
03-316 Update AppendixⅢ, Table 4.2.2 SA
03-317 A213 MTL
03-358 Metrication of Chapter Ⅱ DE
03-359 Metrication of Appendix D DE
03-360 Metrication of Appendix Ⅱ DE
03-361 Metrication of Appendix Ⅱ Sample Problem DE 03-976 Appendix Adding Classes and Joint Efficiency Factors to
Appendix A DE
03-983 Definition of Various of Thickness Terms FE
03-1673 3.5 Safety Factor for A254 MTL
04-207 Jurisdictional Boundary between Pipe Support and
Pressure Bounbary FE, DE
04-1337 Inclusion of ASTM B584（UNS C84400）in Table A-6 MTL 04-1335 Temperature Rates of Change - Table 102.3.2（c）&
Paragraph 119.7.1（A.3） DE
04-1502 Relief from Branch Connection Weld Size Connection DE 05-204 Review of Standards Listed in Appendix F and Table 126, DE 05-207 Possible Inclusion of a Metrication Guideline
Administrative Letter GR
05-750 BEP Note, Water Wetted Services MTL
05-751 Incorporation of Case 175 MTL
05-1330 Unify Appendix A Tables to Provide More Consistent
Column and Headers MTL
05-1458 Table 136.4 and Paragraph 137, Exemption of RT and
Pressure Test on SRV Vent Piping FE
06-181 Partial Penetration Welds DE, FE
06-688 Add Reference to Paragraph 101.1 DE
06-689 Appendix Ⅳ Reference Review DE
06-1109 Referencing PCC-2 Repair of Pressure Equipment and
Piping OM
06-1229 Paragraph 102.4.5, Wall Thickness at any Location on
Bend DE
06-1230 Table 126.1 – Validate Legitimacy of NFPA References DE 06-1254 Review of Appendix V, Foreword, Definitions, and
Paragraph V-5.0 OM
06-1255 Review of Appendix V, Paragraph V-2.0 and 3.0 OM 06-1256 Review of Appendix V, Paragraph V-4.1 only OM 06-1327 Clarify Definition of S(E) in Creep Range DE
06-1521 ANSI/FCI 79-1 GR
07-172 Review B31.3 Code Case 181 and SC-I Code Case 2235 on
UT Acceptance Criteria FE
07-173 Incorporation of Heat Treatment Definitions MTL 07-177 Clarify Definition of N and S(E) Definition Conflict with
Note 7 DE
07-978 Addition of 201LN and S32101 to Appendix A MTL
07-1476 Qualifications of The Designer GR, DE
07-1511 Paragraph 121.1, Thread Engagement for Bolts DE 07-1513 Paragraph 101.7.2, Expansion Joint Type Exclusions for
BEP DE
07-1514 Paragraph V-6.5.1 & Figure V-6.5, Definition of “S” DE
07-1516 Incorporation of Code Case 182 MTL
07-1518 Removing Joint Efficiency Factor from Appendix A MTL 07-1603 Move Paragraph V-7.0 to Chapter 7 OM 07-1604 Move Paragraph V-8.0 and V-9.0 to Chapter 7 OM
08-22 Figure 100.1.2(B) GR
08-174 Addition of UNS N08904(904L) MTL
08-175 UNS N08367, ASTM B564, B462, and B691 MTL
08-179 Exemption Thicknesses for PWHT FE
08-931 Define Material Recommendations for FAC Applications MTL 08-932 Addition of A312 Heavy Cold Worked (HCW) to Table A-3 MTL
08-933 Correct Footnotes for Table A-3 MTL
08-934 Base Material Supplemental Testing MTL 08-935 Addition of Grade 25 Duplex Castings MTL 08-936 Extending Allowables for R30556 to 1650F MTL 08-937 Correcting Joint Efficiency Factor for A789 and A790 MTL 08-977 Paragraph 102.2.4 – Parameters for Design Criteria
DE
08-978 Relocate Paragraph 102.3.3 & Re-word Paragraph 104.8.2
– Short-Term Sustained Loads DE
08-981 OM Chapter 7 140 (H) “System Readings” OM 08-995 Deletion of Lines in Book Using Withdrawn Specifications MTL 08-1178 Paragraph 137.3.1 Boiler External Piping Hydrostatic
Testing Requirements FE
08-1288 Revise Table 104.1.2 (A) y-factors DE 08-1369 B16.34 Cold Water Rating to Paragraph 122.1.7 DE 08-1375 ASTM A15 Change Yield Strength S32205 MTL
08-1376 Appendix F AWWA Standards Update SA
09-228 Revision to Table A-6 (SB-466 C71500) MTL
09-341 Add Reference to B31 J DE
09-345 Paragraph 136.3.2, Qualifications of NDE Personnel FE 09-585 Permit The Use of Stainless Steel A 403 Type 304
Seamless and Welded Fittings on BEP MTL
09-929 Addition of S32101 to Appendix A MTL
09-930 Addition of UNS S31726 (317LMN) MTL
09-977 Reference of B31.12 Hydrogen Piping GR 09-978 Relocate Last Sentence of 122.8.1(B.2.2) GR 09-1071 Limit of Controls for Over Pressure Protection Paragraph
122.6.1 DE
09-1238 Inconsistencies Between B31.1 and BPV Section I MTL 09-1484 B31.1; Reference to PTC 19.3 Thermowells
09-1646 Add 316 TI, 317 and 317 L Tubing MTL
09-1656 Unifying 316, 315 L to 1200 F MTL
09-1660 Evaluation of All 9 Chrome Materials for Creep Strength
Enhanced Ferritics for Y Value MTL
09-1662 Revise Fatigue Rules Above 100,000 Cycles DE 09-1663 Paragraph 106.1 Design Consideration for Weld on Branch
Connections for Figure 127.4.8 (G) DE
09-1668 Coordinate Transition of 07-981 into Appendix N SA 09-1669 Coordinate Transition of 03-315 into Appendix N SA 09-1670 Coordinate Transition of 03-316 into Appendix N SA 09-1674 Add Pipe Fitting Manufacturing Details to Chapter VII,
Paragraph 140 OM
09-1675 P15 E PWHT Comparison Between Table 132 and Section
I Table PW39 FE
09-1676 Paragraph 131.6.1, Additional Rules on Creep Strength
Enhancement FE
09-1774 Review of Paragraph 100 Reference to Table 126.1 GR 09-1957 Add Alloy 690 to B166, B168 and Table 126.1 MTL
09-1958 P-No for C12 Casting MTL
10-8 Suggested Revision by Code User for Paragraph 122.1.2
(A.2) and (A.3) DE
10-302 Revise Appendix 4 Per Updated References DE 10-305 Reference to Paragraph 104.3.1 (d) - Area Replacement
Rules Review of ASME BPV III Record #04-1612 DE 10-306 Update Reference to BPV Section VIII - 2 DE 10-307 Consistency in Reference to Stress Range DE 10-308 Review of API 579/ ASME FFS-1 for Incorporation in
Chapter 7 or Appendix 5 OM
10-309 Review of ASME PCC-3 for Incorporation in Chapter 7 or
Appendix 5 OM
10-310 Change References in the Code for RT and UT to
Volumetric Examination FE
10-385 Reduced Creep Resistance Data for Gr. 91 MTL 10-414 Issue with B31.1 Modulus Data & Further Investigation
into 5Cr-9Cr MTL
3.4. Code Case
3.4.1. Open Code Case Items Tracking
No. 件 名 担 当
Sub-Group
03-344 Carbon Steel Above 800 F MTL
06-186 Code Case for UNS S32003 to A240, A789, and A790 MTL 06-1264 To Permit The Use of Section Ⅰ Code Case materials in
BEP MTL
09-897
Proposed B31 Code Case Which Increases the Postweld Heat Treatment Holding Temperature Range for Welds Joinging P-No. 1 or P-No. 3 Materials to P-No. 5B Group 1
FE
Materials
09-1219 BEP Materials Code Case (Alloy N06625 ) MTL 10-738 Alternate Rules for High Cycle Fatigue DE 10-739 Alternate Rules for Pressure Design of Heavy Wall Wyes,
Laterals, and Tees DE
II. September 2010 B31 Code Meeting Report
Phoenix, AZ, USAのSheraton Crescent Hotelにおいて2010年9月20日（月）～9 月24日（金）に開催された。出席したCode Meetingを下表に、会議の内容を以下に示 す。
月 日（曜日） No. 出席したCode Meeting 9月20日（月） 1 B31.1 SG on Piping System Performance 9月21日（火） 2 B31.1 SG on Design
9月22日（水） 3 B31.1 SC
9月23日（木） 4 B31 Mechanical Design TC 9月24日（金） 5 B31 SDC
（注）SG : Subgroup SC : Section Committee TC : Technical Committee SDC : Standards Committee
1. B31.1 SG on Piping System Performance
〔開催日〕2010年9月20日（月）
1.1. ASME B31.1 (and All Other B31 Codes) Flexibility Analysis : What is It and What is its Significance ?
ASME B31.1のFlexibility Designは、Paragraph 102.3.2(B)、Paragraph 104.8.3及 びParagraph 119に規定されている。これらは、Marklによる突合せ継手の疲労試験デ ータ（ASME Paper 51-PET-21）と“Piping Flexibility Analysis”（ASME Paper 53-A-51）
が基になっている。
また、これらのParagraphでの前提は、完全弾塑性体とし、発生応力は2Syを超えさ せずラチェツティングを発生させないこと。起動停止回数 (cyclic stress range factor : f ) は7000回をベースとしている。
1.2. Identification and Elimination of Problem Expansion Joints in Power Plant Piping 建設後30年以上を経過した発電所の主蒸気配管 (225 psi )、抽気配管 (50 psi, 5 psi )
の伸縮継手とアンカーを検査した。その結果、5 psi抽気配管のアンカーに割れを発見し た。検査の際は、配管系の応力を計算している。
1.3. On-line Inspection and Monitoring of High Energy Piping During Operation by The QAE NDI
QAE社では、運転中の配管系に対して、早期のクリープダメージとマイクロクラック を検出するためにアコースティクエミッション(AE)を用いている。
加えて、高エネルギーを有する配管に対して、AEを用いたリスクアセスメントとモニ タリングが次のステップで実施される。
Step 1 : Map of Risk Zones in The Line Step 2 : Flaw Type and Danger Level Step 3 : Indications of Preparation Step 4 : Operation Risk Factors
Step 5 : Long Term On-line Monitoring
また、P91鋼を用いた配管に対して、AEを用いた検査とモニタリングについて開発を 行っている。
概要については、www.margan.comにアクセスして知ることができる。
1.4. Short Note on y-parameter in Formula for Thickness Calculation defined in 104.1.2 and PG-27.2.2
ASME B31.1a-2008 Table 104.1.2(A)で規定されるValues of yに対し、新たなValues of yを提案した。説明時間がなく資料配布のみとした。質問等については、Eルール等で 行うこととした。
2. B31.1 SG on Design
〔開催日〕2010年9月21日（火）
SG on Designでの対応状況等について下記のアイテムの状況報告があった。
2.1. Inquiries Tracking
No. 件 名 備 考
08-1148 Intent Interpretation of B31.1 Paragraph 122.8 DE
10-940 Paragraph 122.1.7 A.1 DE
2.2. Revision
2.2.1. B31 Standards Committee Ballots Level Tracking
No. 件 名 備 考
03-296 New Paragraph and Definition for Packaged Equipment Piping
08-172 MDC Recommended Wall Thickness Equation 08-421 Review of Paragraph 104.3.1 (G.6.1) Equation