asme b&pv code 2001

HSB EngineeringServices

Technical Service BulletinASME B&PV Code2001 Code Synopsis

Codes and Standards GroupSeptember 2001

2001 ASME Code Synopsis

The 2001 Edition of the ASME Boiler and Pressure Vessel Code was published on July 1. Thisedition is a clean reprint of the ’98 Edition through 2000 Addenda plus additional revisionsapproved between May 2000 and February of 2001. Revisions in the 2001 Edition are called outby the designation “01” in the margin next to the revised paragraph. Please note that therevisions published in the 2001 Edition do not become mandatory until January 1, 2002. If youchoose not to invoke these revisions for Code construction between now and January 1, 2002,then you are in effect still working to the 1998 Edition, 2000 Addenda, and that is what youshould call out on your data report. However, if you choose to invoke the 2001 Edition withrevisions, then it should be referenced as the “2001 Edition” on the data report(s).

The Codes and Standards Group of Hartford Steam Boiler prepared the following summary ofcode revisions. Summary tables containing Revisions, Additions, and Errata are provided forSections I, II, III, IV, V, VIII, IX, X, and XI. This is the first year that we have begun tosummarize Section III Nuclear and Section XI Inservice revisions. In addition to the summarytables for each Code section, an executive summary of some of the major changes that occurredin the 2001 Edition has been provided. Commentary on revisions represents HSB's opinion of thechanges, and is not intended to be an official interpretation of the ASME Code. In addition,every effort was made to accurately describe the addenda changes; however, we caution Codeusers to always refer to the actual Code rules that apply and to use this document as asupplementary tool to the Code.

Section II Changes:Parts A&B : Many of the revisions in Parts A&B correspond to updating SA/SB specifications toconform to the latest ASTM A/B specifications. Please refer to Appendix A of Section II, PartsA and B to identify the latest adopted ASTM specification.

Part D: We have only listed additions and deletions to the tables. To help the user, we havechosen to list the changes sorted alphabetically according to the specification names (i.e., SA,SB), rather the nominal composition, tensile strength, etc., as outlined in the User Guide to theSection II, Part D of the Code. The listings in this synopsis should be used as a quick guide toidentify significant changes. The user should always use the actual Code pages to examine,review, compare and use the rules of Section II, Part D.

Any questions or comments on this document can be directed to:Thomas P. Pastor (860) 722-5615 e-mail [email protected] Babka (860) 722-5197 e-mail [email protected] Olivares (860) 722-5661 e-mail [email protected] LaRochelle (860) 722-5662 e-mail [email protected]

TABLE OF CONTENTS

EXECUTIVE SUMMARY........................................................................................................... E1SECTION I - POWER BOILERS....................................................................................................1SECTION II - MATERIALS ..........................................................................................................4

PART A - Ferrous Material Specifications ..............................................................................4PART B - Nonferrous Material Specifications ........................................................................6PART C - Specifications for Welding Rods, Electrodes, and Filler Metals ............................9PART D - Properties ................................................................................................................9

Table 1A Section I; Section III, Class 2 and 3; and Section VIII-1Maximum Allowable Stress Values S for Ferrous Materials ...........................................9Table 1B - Section I; Section III Class 2 and 3; and Section VIII-1Maximum Allowable Stress Values S for Nonferrous Materials ...................................10Table 2A - Section III, Class 1 and Section VIII-2Design Stress Intensity Values Sm for Ferrous Materials ..............................................10Table 2B - Section III, Class 1 and Section VIII, Division 2Design Stress Intensity Values Sm for Nonferrous Materials .........................................10Table U – Tensile Strength Values Su for Ferrous and Nonferrous Materials ...............11Table Y-1 -Yield Strength Values Sy for Ferrous and Nonferrous Materials ................11Table Y-3 – Section VIII, Division 3Yield Strength Values Sy for Ferrous and Nonferrous Materials ...................................11Subpart 3 ........................................................................................................................12Appendices .....................................................................................................................12

SECTION III – Subsection NCA – General Requirements for Divisions 1 and 2 .......................13SECTION III – DIVISION 1

Appendices ............................................................................................................................14Code Cases .............................................................................................................................14Subsection NB – Class 1 Components ...................................................................................15Subsection NC – Class 2 Components....................................................................................16Subsection ND – Class 3 Components ..................................................................................16Subsection NE – Class MC Components................................................................................17Subsection NF – Supports ......................................................................................................17Subsection NG – Core Support Structures .............................................................................18Subsection NH – Class 1 Components in Elevated Temperature Service...........................N/A

SECTION III – DIVISION 2 – CODE FOR CONCRETE REACTOR VESSELS ANDCONTAINMENTS ................................................................................................................19

SECTION III – DIVISION 3 – CONTAINMENT SYSTEMS FOR STORAGE ANDTRANSPORT PACKAGINGS OF SPENT NUCLEAR FUEL AND HIGH LEVELRADIOACTIVE MATERIAL AND WASTE.......................................................................20

SECTION IV- HEATING BOILERS ...........................................................................................21SECTION V - NONDESTRUCTIVE EXAMINATION .............................................................23SECTION VIII, DIVISION 1- PRESSURE VESSELS ...............................................................25SECTION VIII, DIVISION 2 - PRESSURE VESSELS - ALTERNATIVE RULES .................33SECTION VIII, DIVISION 3 - ALT. RULES FOR HIGH PRESSURE VESSELS ...................36SECTION IX - WELDING AND BRAZING QUALIFICATIONS ............................................39SECTION X - FIBER-REINFORCED PLASTIC PRESSURE VESSELS .................................43SECTION XI – RULES FOR INSERVICE INSPECTION OF NUCLEAR POWER PLANT

COMPONENTS ....................................................................................................................44

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SYNOPSIS OF THE 2001 EDITIONOF THE

ASME BOILER AND PRESSURE VESSEL CODE

EXECUTIVE SUMMARY

The 2001 Edition is a clean reprint of the 1998 Edition through 2000 Addenda plus allrevisions/additions/errata approved between May 2000 and February 2001 by the ASME B&PVCommittee. These revisions may be used starting on July 1, 2001, and become mandatory onJanuary 1, 2002.

The synopsis before you is the result of an extensive review of the 2001 Edition and itsrevisions compared with the B&PV Main Committee minutes to provide insights into thechanges presented. The following Executive Summary summarizes those revisions considered tobe of major significance.

Thomas P. PastorDirector, HSB Codes & StandardsSeptember 26, 2001

SECTION I

PG-6European specification SA/EN 10028-2, Grade P295GH added to approved plate materials. Thegrade is similar to SA-516 65 and is already listed in Section II, Part A.

PG-27.4, Note 2 Minimum Temperature of 700°° F for TubesPG-27.4, Note 2 requires a minimum design temperature of 700°F for tubes absorbing heat,regardless of the calculated mean wall temperature. Subcommittee I believes this requirement isoverly restrictive, particular in the light of the recent changes in design margin on tensilestrength. The use of the actual calculated temperatures, in situations where those temperaturesare lower than 700°F, will permit the use of the recently introduced higher allowable stresses.

PW-39 Local Post Weld Heat TreatmentIn order to remain competitive in both domestic and overseas market, there is an increasing trendtowards use of modular drum construction, and increased use of subcontracted fabricators. Inmodular construction, there are many instances where it is undesirable to perform full heattreatment on previously machined surfaces (with attendant oxidation of surfaces), and manysublet vendors do not have the furnace capability to heat treat large sections. In such cases, itwould be of great benefit to have Section I contain rules that would permit drum sections to belocally post weld heat treated, while at the same time being able to limit the amount of materialbeing exposed to the full heat treatment temperature. Section VIII-1 has recently adopted rulesthat would permit the width of the heated circumferential band, or the temperature within theheated circumferential band, to be varied during the post weld heat treatment. In addition, this

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revision will permit local PWHT of nozzles welded to the spherical portion of dished heads or tospherical shells and heads.

PW-40, Repair of Defects Without Repeating PWHT

In many instances, the final PWHT of a drum or shell is not the final fabrication operation, andwhen defects are discovered after the heat treatment, it is often very difficult to perform anotherPWHT without significant chance of damage to the component. The new paragraph PW-40.3 isintended to permit a certain amount of weld repair to materials and to welds joining them, whendefects are found after final PWHT, but without having to perform another PWHT.

Some of the criteria that must be met are as follows:

• Limited to repair of defects in P-No. 1 Group Nos. 1, 2 & 3, and P- No. 3 Group Nos. 1 & 2base material, and the welds joining these materials.

• Total repair depth in material is limited to 10% of base material thickness.

• Total repair depth in the weld joint is limited to 10% of base material thickness, and shall beequal to the sum of the depths for repairs made from both sides of the weld at a givenlocation.

• Total area of base metal repair shall be limited to 100 sq. in.

• All welded repair work must be completed prior to final hydrostatic test.

PWT-15, PFT-42

Door rules for furnaces less than 24 in. diameter have been added.

A-22.6.3 Bursting Tests

In response to the change in the design margin on ultimate tensile strength from 4.0 to 3.5, theburst test factor of A-22.6.3 was reduced from 5.0 to 4.0.

Code Case 2235-3 - UT in Lieu of RT - Revised to Include Section I ConstructionRevisions were approved to Code Case 2235 permitting the use of ultrasonic examination in lieuof RT for Section I power boiler construction. This revision was published in Boiler and PressureVessel Code Cases Supplement 10 as Case 2235-3.

SECTION II

PARTS A & B

ASME holds back publication of all accepted updated ASTM specifications until the publicationof its new edition. Thus the majority of the revisions to Parts A & B are associated with adoptionof the latest ASTM published specification. Please review Appendix A in both Part A & B tofind a summary equivalent ASTM specification editions.

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SECTION III

NCA-3681

The provisions of Code Case N-607 have been incorporated into NCA-3681 and Table 8100-1which permits NS Certificate Holders to fabricate Supports to earlier Editions of the Code without NPT stamping and ANI involvement.

Code Case N-645

Code Case N-645 was issued allowing the use of Rupture Disks on Nuclear Fuel StorageCanisters.

NF-3350 and NF-3360

Revision eliminates the required application of high cycle fatigue analysis to class 2 & 3supports.

SECTION IV

HG-512.2(n) CERTIFIED INDIVIDUALChanges have been made to provide for oversight by a designated individual for the constructionof Cast Iron boilers. This revision was brought about because of the ASME policy that requiresadditional designated oversight for activities where the ASME Code symbol is applied toproducts. For most ASME boilers and pressure vessels the Authorized Inspector provides thisoversight. However, with Cast Iron boilers there is no Inspector involvement. Therefore, it wasnecessary for the Committee to institute rules for the control of oversight activities where there isno Inspector involvement. The “Certified Individual” provides this oversight for Cast Ironboilers. In the future, expect to see similar designated oversight changes for safety relief valveconstruction.

SECTION VIII, Division 1

UG-45, Appendix L - Examples of UG-45 rules were added to Appendix L, Examples L-7.1through L-7.8. In addition an introduction paragraph was added to UG-45 and revisions made toUG-45(b) to clarify the steps required to size a nozzle, and to direct code users to the examplesin Appendix L.

UG-46 Minimum Manhole Size - 12 x 16

The minimum manhole size was increased from 11” x 15” to 12” x 16”. Per UG-46(f)(3),manholes for inspection purposes are required for vessels over 36” diameter. No provision wasmade to use up existing stock.

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UG-77(a)

In the current Code, UG-77(a) states that "one complete set of the original identificationmarkings required in the specifications for the material will be plainly visible". This suggests thatall material for pressure parts must contain the full marking required by the materialspecification. This is in conflict with UG-94 and UG-93 which only require full marking per thespecification for plate material; for all other product forms (forgings, casting, pipe, tube) SectionVIII-1 only requires the material to be marked with specification, type, class, and grade asapplicable. This revision to UG-77(a) now correctly references UG-94 for the required materialmarking.

New UW-21

Weld details are presently not given in Section VIII-1 for ASME B16.5 socket weld flangeswelded to a nozzle neck, nor for ASME B16.5 Slip-On flanges welded to a nozzle neck. Thisnew paragraph introduces socket weld joint details borrowed from B31.3.

UHA-51(a)(2) - Toughness Rules for MDMT < -320oF

Earlier research work conducted at MIT and NIST indicated that CVN specimens with initialtemperature at or near -452°F actually fracture at temperatures significantly warmer than -452°Fdue to adiabatic heating. As a result, ASTM E-23 was revised to incorporate a restriction thatCVN tests are only valid at -320°F and warmer. At the request of ASME, the PVRC undertook atest program to develop a correlation between CVN lateral expansion (LE) at -320°F and KIC at-452°F. The results of the PVRC research led to the following revisions:

(1) For MDMT colder than -320°F, use CVN tests at -320°F with additional conditions: (a) type316L weld filler (b) LE=21 mils (c) FN=5

(2) For welds not meeting the above, use ASTM E1820 JIC test. The KIC(J) shall not be less than120 ksi(in)2 at MDMT.

(3) CVN exemption temperature on Type 304, 304L, 316, 316L, 321 and 347 SS has beenchanged from -425° F to -320°F. THIS COULD HAVE A SIGNIFICANT AFFECT ONSOME MANUFACTURERS!

Table ULT Allowable Stresses adjusted based on 3.5 Design Margin

Part ULT rules are commonly used for storage and transport of liquid nitrogen, oxygen, argon,etc. This revision and implementing Code Case provide an allowable stress increase for this typeof construction as a result of the reduction in the design margin from 4.0 to 3.5. The allowablestress table is presented in both US Customary and SI units.

Appendix 14

Revisions were made to Appendix 14 to clarify use of the design procedure. In addition two fullyworked out examples (integral flat head with and without a central nozzle) have been addedwhich will greatly help code users with meeting the Appendix 14 requirements. With theseexamples, it is possible that some Manufacturers will discover some mistakes in theirprevious Appendix 14 calculations; therefore, it is strongly recommended that all existing

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Appendix 14 designs be checked following the detailed procedure presented in theexamples.

SECTION IX

QW-202.2(d)

Paragraph was deleted eliminating the additional fillet weld qualification requirement for P-No.11 materials (except for P-No.11A, Group 1 and 2). The reason for the change was to makethe Code consistent on its requirements with other similar high strength and highly hardenablematerials that do not require additional qualification for fillet welds. Some reasons behind thechange were better chemistry control of the base metal, better low-hydrogen electrodes andbetter knowledge of what causes hydrogen cracking associated with P-No.11 materials.

QW-404.50

Use of Preparation Flux for GTAW. This is a new non-essential variable, which would requirethe user to record the addition or deletion of flux when used with GTAW process. Use of thisflux dramatically increases weld penetration without affecting mechanical properties of the welddeposit.

QW-484 – Forms for Welding and Welding Operator

This change splits the existing QW-484 form into two new forms creating individual forms forwelder and welding operator performance qualification. This will provide additional space forrecording performance qualification variables for welders and welding operator qualification tobe addressed.

Synopsis of the 2001 ASME CodeThe Hartford Steam Boiler Inspection and Insurance Co.

Thursday, October 04, 2001 Page 1

6PG-6 Revision European specification SA/EN 10028-2, Grade P295GH added to approved plate materials. The grade is similar to SA-516 65 and is already listed in Section II, Part A.

9.1PG-9.1 Revision SA-226 deleted from PG-9.1. ASTM has removed this material from its volumes because of lack of use or production.

9.2PG-9.2, PG-27.4 Addition Incorporation of Code Case 2188-4 for UNS N06045 has added SB-166, SB-167, SB-168, SB-516 and SB-517 to approved materials listing for Section I use. UNS N06045 also added to PG-27.4, Note 6.

9.5PG-9.5, PG-11.3 Footnote 6 Addition Paragraph PG-9.5 added and Footnote 6 of PG-11.3 revised to include size limitations onERW pipe and tube. The improvements in the manufacturing process have enabled ERWproducts to be manufactured in larger diameters and wall thicknesses. As a result of theselarger diameters and wall thicknesses in power boilers there is concern that the larger thicknesses will impede the ability of an ERW mill's automatic NDE equipment to detecttypical process defects. This item was originally supposed to be included in the 1998 Addenda.

19PG-19, Footnote 8 Addition New footnote added to reference Section II, Part D, Appendix 6, Paragraph 6-460 for background on the rules in PG-19.

25PG-25, Table A-360 Revision PG-25 and Table A-360, have been revised to specifically reference ASTM E 186, E 280 and E 446. The deletion of these specifications from Section V, Article 22 has been proposed since Article 2 does not reference them.

27.4PG-27.4 Revision Currently, Note 2 requires a minimum design temperature of 700°F for tubes absorbing heat, regardless of the calculated mean wall temperatre. It is believed this requirement is overly restrictive, particular in the light of the recent changes in design margin on tensile strength. The use of the actual calculated temperatures, in situations where those temperatures are lower than 700°F, will permit the use of the recently introduced higher allowable stresses.

36.4PG-36.4, Figure PG-36.4, sketch (e)

Revision Revison to sketch (e) and addition of (e-1), (e-2) and General Notes clarify the definition of te for cases where the thick portion of the nozzle neck extends beyond the limits of reinforcement.

61.2PG-61.2 Revision Combustion turbine engine exhaust has been added as a means of firing to allow a single means of feed water provided the size and shutoff requirements are met. This revision isconsistent with the intent of current rules.

67.4PG-67.4.1 Revision Revision incorporates Code Case 2232 allowing ball type isolation stop valve for power-actuated pressure relief valves after several years of successful service.

73.3PG-73.3.5 and PG-110 Revision PG-73.3.5 marking requirements have been deleted and incorporated in PG-110 for consistency and clarification of who should actually stamp the assembled valve.

106.8PG-106.8.2 Addition For boiler parts 5 inch OD and smaller, marking with a method acceptable to the Inspector is permitted in lieu of stamping with the Code symbol. The marking shall also be traceable to the P-4 Data Report. This will effectively allow for expanded use of coded markings for small diameter piping products. PG-106.8 renumbered as PG-106.8.1.

1Code Book: IPart:

CSubpart/Table: Part PG

Paragraph Type Subject

DSubpart/Table: Part PW




9.3PW-9.3 Addition Code Case 2210 has been incorporated, which provides alternative rules for the longtudinal offset alignment of shells and vessels. PW-9.3.3 was found to be unnecessary and deleted, as well.

11PW-11, Table PW-11 Revision Revision to General Note (a) clarifies that the UT of electroslag welds in ferritic materialsor friction welds must be done in addition to RT when RT is required. Previous words were ambiguous. General Note (e) revised to provide consistency. Previous Note referenced "OD" and the table uses size (NPS).

16.6PW-16.6, Fig. PW-16.1 Addition Incorporation of Code Case 2086 allows the use of partial pentration plus fillet welds forattachment of watertubes to tubesheets provided criteria in new PW-16.6(c) and Figure PW-16.1, sketch (bb), have been met.

39PW-39, Table PW-39, Note (3)

Revision Revise Note (3) of Table PW-39 for P-No. 1 material to include P-No. 1 Group 2 material having a maximum carbon content of 0.30%. It is believed that the exemptions in Table PW-39 should be based on chemical composition (susceptibility to hydrogen induced cold cracking) and not on strength per se. Previously the exemption were based on Group number only.

39.1PW-39.1 Revision PMB-9, PW-40.2 and PW-40.3 added and PG-39.7 and PG-42.1 removed to provide consistency with current Code rules and references.

39.2PW-39.2.1 Revision Full penetration welds attaching P-No. 5A tube and pipe to lower P-No. materials are now permitted to be post weld heat treated at the lower PWHT temperature per the criteria previously established for fillet and partial penetration welds.

39.4PW-39.4 and PW-39.5 Revision The paragraphs have had extensive rework done to provide clarification and guidance on PWHT procedures. Also, some alternative rules for PWHT have been added.

39.6PW-39.6 Revision Wording in PW-39.6, was found to be redundant with requirements in other Code paragraphs and edited for clarity of intent.

40PW-40 Revision Section I now permits defect repair in P-No. 1 Group Nos. 1, 2, and 3 and P-No. 3 Group Nos. 1 and 2 materials after PWHT but before the final hydrostatic test provided the criteria established in PW-40.3 have been met.

51.5PW-51.5, PW-52.4 and Footnote 3

Revision ASNT Central Certification Program (ACCP) is now an acceptable guideline for employers to use to establish their written practice for qualifications and certification of their radiography and ultrasonic examination personnel.

15PWT-15 Revision Requirements have been added to allow for smaller fireside openings in boilers with furnaces less than 24 inches. Previously, the Code only specified requirements for furnaces 24 inches and over.

42PFT-42 Revision Requirements have been added to allow for smaller fireside openings in boilers with furnaces less than 24 inches. Previously, the Code only specified requirements for furnaces 24 inches and over.

FSubpart/Table: Part PWT


GSubpart/Table: Part PFT


MSubpart/Table: Appendix




22.6A-22.6.3 Revision Revision parallels Section VIII change, lowering the design margin used in bursting proof tests from 5.0 to 4.0

260A-260 and A-270 Revision Paragraph A-260.4 (d) and A-270.4 (d) are not "Acceptance Standards." They are qualifying statements about "Evaluation of Indications" and would more appropriately be included under paragraph, A-260.3 and A-270.3, respectively.

354.1A-354.1 and A-354.2 Revision Items 4 and 4a of A-354.1 and A-354.2 have been revised to clarify the intent.

360A-360, Table A-360 Revision ASNT Central Certification Program reference added to Table A-360.A-360, Table A-360 Revision ASME B31.1 reference updated to 2000 Addenda.

1876Cases 1876-2 & 2084-1 Revision Annulment of Code Case 2084-1 and reaffirmation of Code Case 1876-2

1912Cases 1912, 1934, 2182 Revision Annulment of Code Case 1912, and reaffirmation of Code Cases 1934 & 2182

2332Case 2332 Addition Permits the attachment of certain small connections using a combination of groove and fillet welds without post weld heat treatment for P-No. 1, Group 1 or 2 materials.

2343Case 2343 Addition Allows seal welding of pressure retaining handhole and inspection plugs or fittings secured by physical means after the hydrostatic test provided acceptance criteria has been satisfied.

OSubpart/Table: Code Cases




6SA-6 Revision Addition of specification A 913 (shapes), A 945 (plate) and A 992 (shapes). Elongation reduction allowances added for shapes < 0.180". Bend tests (Supplement S14) deleted. Supplement S27 added to provide for restrictive flatness requirements.

20SA-20 Revision Adoption of ASTM A 20/A 20M-97a.

29SA-29 Revision Paragraph 5.1.2.4 has been clarified and is now headed as a referee test. This eliminates an apparent conflict in the requirements for Section 5. In Section 6 on Mechanical Property Requirements a correction has been made in 6.3.3 on retesting. The value of 200psi in the current SA revision has been corrected to 2000 psi.

36SA-36 Revision Addition of para 4.1 and revision to scope to include language certifying plate produced from coils. This emphasizes the need to certify to a specification after a material has beendecoiled and tested.

53SA-53 Revision Revision to all of the sections due to extensive rearrangement. The specification is now indual format. Note 2 in the scope now concerns nominal wall thickness. The limitation on cold expansion for Type E is now in section 4.4. The Ordering Information section has been expanded. There is a new section 9.3.3 that deals with the timing of the flattening test for ERW pipe subsequently reheated.

105SA-105 Revision Adoption of ASTM A 105/A 105M-98.

193SA-193 Cl 2B Revision Editorial Correction to the Size Break in Table 2 for SA-193 Cl. 2B Material.

194SA-194 Revision Addition of requirements for metric threads. Addition of zinc coated nuts and provisions for cadmium. Requirement to supply certifications for all products also added. Deletion of Supplementary Requirement S2 for certifications.

203SA-203 Revision Section 4 revised to reference SA-20 for fine grain size requirements.

213SA-213 Revision Editorial Corrections to Para. 5.2.1 regarding the grain size and 321 grade: “finer” changedto “coarser” and “321” changed to “321H”.

217SA-217 Revision An editorial correction was made in Note 3 to the Scope changing "nine" to "ten". A newgrade C12A (J84090) has been added with a strength level of 85/110ksi UTS and yield of60ksi. The current subtitle changes must be continued concerning weld repairs.

234SA-234 Revision Revised in order to keep the ASME BPV material Code current with the latest ASTM revisions.

266SA-266 Revision The change incorporates Grade 3 material. The chemistry has been adjusted to reduce themaximum carbon content to 0.35% and still maintain the tensile strength range of 75/100 ksi and minimum yield strength of 37.5 ksi. This change brings Grade 3 within the welding rules for SC VIII. The only change is to Table 1 "Chemical Requirements".

268SA-268 Gr TP439 Revision Editorial correction to the UNS Designation for SA-268 TP439 in Table 4.SA-268 Revision Addition of Supplementary Requirements S2 to address the special NDE requirements.

299SA-299 Revision Inclusion of a fine grain requirement in para. 4.

312SA-312 Revision 5.2 "Heat Treatment" revised to exclude direct solution treatment of the H grades. Table 2 - the ASTM specification had omitted grades S35315, N08367, and N08904 in error. These grades are being retained in the ASME specification. Tables 2 & 3 - Grade S34565 of the ASTM specification has been listed incorrectly as S24565. This correction has been made to the ASME specification.

320SA-320 Revision Addition of reference to Appendix X1 on strain hardening within scope.

2Code Book: IIAPart: ASubpart/Table:




333SA-333 Revision Nondestructive electric test was added as an option to hydrostatic testing (Section 15). Original paragraph, 12.2, for mandatory hydrostatic testing (under "Mechanical Testing")was deleted. Also, in 2 "Referenced Documents" the ASNT document for nondestructive personnel qualification and certification has been added.

350SA-350 Revision Revised in order to keep the ASME BPV material Code current with the latest ASTM revisions.

351SA-351 Revision Adoption of ASTM A 351/A 351M-94a.

420SA-420 Revision A 29/A 29M added to Section 2. Addition of paras. 7.2, 7.4, 16.3 and section 18. Addition of “only by agreement with the purchaser” to the end of para. 11.2. Table 1 - Notes 1 and 2 added. Changes in composition made for WPL6 (Mn, P, S, Si and Ni) and WPL9 (Si). Values for Cr, Mo, Cb and V added for Gr. WPL6. Table 3 - Note 1 added. Tables 4 and 5 - The J and ft-lbf headings were reversed, but the values were not reversed.

437SA-437 Revision Note 2, referring to alternative fastener standards deleted. The requirements of Common Requirements specification A 962 incorporated and all previously listed "Referenced Documents" deleted.

453SA-453 Revision Revison clarifies sections such as manufacture, testing and certification.

455SA-455 Revision Corrects an error in which Footnote A is not referenced in Table 2 for the "elongation in 2 in. [50 mm], min, %" for a thickness "up to 0.375 in. [9.5 mm]".

479SA-479 Revision Addition of grades N08367, S32050, S33228, S32205, S32760, S32906 and S41425. UNS number for S34565 corrected from S24565. Chemistry limits in Table 1 modified tobe consistent with industry-wide agreements shown in A 959. Requirements for grain size of non-H grade austenitics used above 1000°F modified.

480SA-480 Revision Revision included reorganization of whole specification. Deletion of information regarding grain size, deferring instead to the existing requirement in A 240. Addition of N08800. Provisions for Charpy testing added to para. 19.1.7. Section 8 expanded mainly to cover the transmittal of data using EDI. Para 25.1.1.2 on marking expanded to include provisions for marking small pieces in one place, rather than the conventional two. Addition of several grades to the heat treatment requirements in Table A1.2 (N08020, N08811, S31266, S32050, S32001, S32209 and S32520). Addition of footnote C that clarifies rapid cooling in coil form in table A1.2. Annex A2 includes a description of the concept of defining a product by the production method.

484SA-484 Revision Addition of para. 1.3. Paragraph 5.2.1 revised. Addition of Annex A1 "Requirements for the Introduction of New Materials".

530SA-530 Revision An error in the scope paragraph 1.2 has been corrected to reference Section 19 for the Flattening Test instead of Section 6, Tensile Requirements. In Section 7 the weight variation permitted applies to seamless pipe. The type of pipe was not stipulated previously.

540SA-540 Revision ANSI standards for threads and fastener dimensions added.

564SA-564 Revision Ordering information section has been expanded. General requirements section has been corrected to reference A 484/A 484M.

638SA-638 Revision Table order changed. Footnotes to Table 1 revised.

645SA-645 Revision The steel is required to be fine grained and the steel making practice section has been revised to lift some former restrictions (electric furnace practice only).

649SA-649 Revision Revisions to the scope clause and Note B of Table 2. The scope changes concern alternative materials for use as trunnions and the maximum corrugating roll outside diameter. Materials for corrugating roll shells currently included in the specification can now be used for trunnions provided that the strength is restricted to Grade 2, and a maximum tensile strength is imposed by way of Note B in Table 2.

666SA-666 Revision The numbering and layout of the text has been changed. Section 8 on the number of tests required has been expanded. Some new grades with chemical and mechanical test requirements have been added.



688SA-688 Revision Addition of terminology section that refers to A 941. Heat Treatment revised for clarification. The previous first sentence isolated N08367 and suggested that it shall not be solution annealed and later states that it should. Note 1 revised for consistency with ASTM specification.

738SA-738 Revision Scope revised. Table 2 has been revised to increase the maximum thickness of Grade B to over 4 inches (100 mm) with the same specified minimum tensile properties as for plates up to and including 2.5 in. (64 mm). However, the current practice normally limits the maximum thickness of Grade B to 4 in. (100 mm). See paragraph 1.3. Table 1 – Note C has been added which states “For Grade C, columbium is an unspecified element.”

781SA-781 Revision Section 5.4 on unspecified elements and grade substitution has been expanded. Two new supplementary requirements for Macro Etch testing (S17) and Hot Isostatic Pressing (S18) have been added. A new appendix XII has been added which provides wrought alloy grades that are similar to casting alloys.

815SA-815 Revision Addition of UNS S32205 and Class WP-WU. Addition of statement permitting ultrasonic in lieu of radiographic testing in para. 5.4. New paragraphs 5.13 and 5.14. The beginning of para. 8.3 added statement regarding material not previously tested. Table 1 –N value for Grade WP446 changed from “0.10 – 0.25” to “0.25”. Addition of W content for Grade S32760.

SA-941 Addition New Specification. Provides definitions of terms related to steel, stainless steel, related alloys, and ferroalloys.

SA-960 Addition General requirements specification for the pipe fittings specifications which includes SA-234, SA-403, SA-420, SA-758, SA-774, SA-815, SA-858 and SA-860.

SA-961 Addition General requirements specification that includes SA-105, SA-181, SA-182, SA-350, SA-522, SA-694, SA-707, SA-727 and SA-836.

SA-962 Addition General requirements specification that includes SA-193, SA-194, SA-320, SA-437, SA-453 and SA-540.

26SB-26 Revision Deletion of referenced standards E101 and E380 and addition of IEEE/ASTM SI 10 standard and military standards. Addition of paras. 4.2.1, 4.2.2, 4.2.6, 4.2.10 and 4.2.11. Addition of Sections 9, 10, 18 and 23 dealing with material, foundry control, repair, and identification and repair marking respectively for castings produced for governmental andmilitary agencies. Addition of para. 11.2 and revision to para. 11.3. Para. 13.1.1 metric value changed from 2000 kg to 1814 kg.

98SB-98 Revision Preamble revised. Section 2.1.2 was added to reference applicable ASME specifications. Section 8.1.1.1 of the B98 specification was deleted, thus requiring tensile testing rather than Rockwell hardness testing to prove conformance to mechanical properties. Section 11 was added to require mandatory certification. Section 8 was expanded to include Rockwell hardness testing for product 0.5 inches and over in diameter or distance between parallel surfaces. Table 3 was added with required Rockwell Hardness Requirements. Table 2 was split into Table 2a and 2b to incorporate both ksi and MPa units for mechanical properties. Requirements for temper H04 were added.

108SB-108 Revision Deletion of E101 from para. 2.2 and reference to E101 in Section 9. Addition of para. 2.4 "Military Standards". Addition of paras. 4.2.1, 4.2.2, 4.2.6, 4.2.10 and 4.2.11. Addition of Sections 10, 21 and paras. 18.2 through 18.5 dealing with various requirements for castings produced for governmental and military agencies. Revisions to para. 11.2 and addition to para.11.3. Addition of marking requirements for governmental and military agencies in para. 24.4. Addition of Annex A1 "Basis for Inclusion of Property Limits".

160SB-160 Revision Deletion of the "Product Check Analysis Variations" column in Table 2.

BPart: BSubpart/Table:




162SB-162 Revision Incorporation of the ASTM B 880 spec. and the deletion of the "Product Check Analysis Variations" column in Table 2.

166SB-166 Revision Addition of N06603 and hot-worked N06690. Incorporation of the ASTM B 880. N06025 cold worked YS/TS values were changed to 39,000 psi / 98,000 psi and hot-worked (annealed) rods and bars, all sizes for N06025 were added to Table 2. Addition of footnote E, "High-temperature annealed condition".

211SB-211 Revision Addition of paras. 1.3 and 1.4. Deletion of referenced standard E101, addition of E290 and revision to para. 2.6. Addition of definition for Alclad wire in para. 3.1.1. Section 4 revised. Addition of footnotes B, C, E, F, K and L, and note J revised in Table 1. Addition of bend diameter factors for alloys 2017, 2024 and 3003 in Table 1. Revised alloy 2011-T3 thickness range in Table 1. Revised alloy 7075-T6, T62, T73 and T7351 thickness ranges and properties in Table 1. Revisions to footnotes B and D and addition of footnotes F through J in Table 2. Addition of Sections 10 - 14 and 18. Addition of Table 3 and Table 4. Addition of “2000 and 7000 series alloys” and T73, T7351 and T851 tempers regarding marking requirements in para. 17.1. Addition of Appendix A2 “Acceptance Criteria for Inclusion of New Aluminum and Aluminum Alloys”.

241SB-241 Revision Addition of alloys 2014 and 2024 in the T3 and T4-type tempers. Addition of paras. on certification and ultrasonic inspection. Section 8 editorially different from the SB-241 (1996) specification. Addition of paras. 10.1 & 10.2. Sections 11, 12, 16, and Tables 12 and 13 added to the specification. Addition of alloys 2014, 2024, 2219, 7075, and 7178 in the T6, T73, and T8-type tempers as well as alloy 6061 in the T3 and T4-type tempers in Section 19. Addition of Annex A3.

265SB-265 Revision Adopted B 265-99 with the exception to make certification mandatory.

283SB-283 Revision Addition of Section 2.4 to reference the applicable ASME Standard. Alloys not previously covered in the specification were added (C11000, C 14500, C14700, C36500, C46400, C48200, C48500, C61900, C62300, C63000, C63200, C64210, C65500, C67500, C67600, C70620, C71520, C77400). Allowable stresses for these alloys made to this specification are not included in the Code. Iron content shown in Table 1 for alloys C46400, C48200, and C48500 was changed from 0.15 max to 0.10 max. Aluminum content shown in Table 1 for alloy C62300 was changed from 8.5-11 to 8.5-10.0.

337SB-337 Revision Specification deleted.





423SB-423 Revision Revised to update to the current ASTM specification.

425SB-425 Revision Deletion of the "Product Check Analysis Variations" column and footnotes B and C in Table 2. Deletion of footnote A from Table 4.

434SB-434 Revision Paragraph dealing with certification was amended to reflect that certification is mandatory. Added alloy UNS N10242 to title, para 7.1, Tables 1 and 2, and para. 17. Also reference to general requirement specification B 880 added in para 2.1 and 5.2.

443SB-443 Revision Certification has been made mandatory. Deletion of the "Product Check Analysis Variations" column. Addition of Section 17- "Keywords".

464SB-464 Revision Certification has been made mandatory. The "Supplementary Requirements" section hasnot been deleted.

468SB-468 Revision Certification has been made mandatory. Addition of a sentence in para. 5.1. regarding cold-worked welded tube operations prior to the final heat treatment. The "Supplementary Requirements" sections has not been deleted.



494SA-494 Revision Preamble revised to read "Identical with ASTM Specification A 494/A 494M-99 except that certification has been made mandatory." The appropriate paragraphs have also beenrevised to make certification mandatory. Addition of Section 10 "Quality". Deletion of hardness readings for M-30H and M-30C in Table 3.

514SB-514 Revision Addition of preamble stating, "Identical with ASTM Specification B 514-95 except that certification has been made mandatory." Addition of UNS N08120 for welded pipe.

515SB-515 Revision Addition of preamble stating, "Identical with ASTM Specification B 515-95 except that certification has been made mandatory." Addition of UNS N08120 for welded tube.

535SB-535 Revision Addition of preamble stating, "Identical with ASTM Specification B 535-99 except that certification has been made mandatory." Deletion of the "Product Check Analysis" column in Table 1.

564SB-564 Revision Added alloys UNS N10242 and N06219 to para. 1.1, and Tables 1 and 2.

573SB-573 Revision Added alloy UNS N10242 to title, Tables 1 and 2, para 7.6, and para. 17.1. Also added reference to general requirement specification B 880 in paras 2.1 and 5.2.

574SB-574 Revision Requirement for certification made mandatory. Cu requirement of 0.50 max for N06059 in Table 1. Addition of alloy N06210. Density values in para. 7.6 modified from 0.32 lb/in3 & 8.8 g/cm3 to 0.311 lb/in3 & 8.6 g/cm3.

575SB-575 Revision B 575-98 added a new alloy N06210, and B 575-99a added a new alloy N06058. Cu tolerance for N06200 and Al tolerance for N06059 added to Table 3. Density for N06059 changed from 0.32 to 0.311 in para. 7.1. Cu 0.50 max value for N06059 added to Table 1.

581SB-581 Revision Addition of alloy UNS N08031. Deletion of “When specified in the purchase order or contract” from para. 16.1 in order to make certification mandatory. Preamble revised.

619SB-619 Revision Preamble stating, "Identical to ASTM Specification B 619-00 except that certification has been made mandatory." was added and the paragraph dealing with certification was amended to reflect the same. Added alloy UNS N10242 to paras. 1.1 and 9.1, and Tables 1 and 3. Erroneous values for Cb(Nb)+Ta and Zr in Table 1 for alloy N10242 were corrected. B 619-98 added new alloys N06210 and N10624 and B 619-99a added a new alloy N06058.

622SB-622 Revision Addition of UNS N06210 and N10624. Omission of Table 2.

625SB-625 Revision Addition of UNS R20033. Deletion of specification F 155 from para. 2.

626SB-626 Revision Addition of new alloys N06210, N06058 and N10624. Density for N06059 changed from 0.32 to 0.311 in para. 7.5. Chemistry listings in Table 1 changed back to previous B626-97 revision for the following: (1) N06022 - Mn (2) N06059 - Si, Co, Mn, V, P, A1, Zr (3) N06200 - S (4) N06975 - Ni, Cr, Mo (5) N06985 - Cr (6) N10276 - Mn, V, Cu, Cb (+Ta) (7) N12160 - S. For N06059, S max changed from 0.010 to 0.005.

649SB-649 Revision UNS R20033 added. Section 3 revised. Deletion of “If required by the purchaser in the contract or purchase order” in Section 16 in order to make certification mandatory. Preamble revised.

668SB-668 Revision Deletion of paras. 1.2, 1.2.1, 7.2, 7.3, and 8 through 16. Addition of para. 7.1.1 and para.9. Table 2 omitted and Tables 3 and 4 renumbered.

677SB-677 Revision Requirement making certification mandatory added. Addition of paragraphs 7.2 and 9.

705SB-705 Revision Addition of paragraphs 3 and 8.2.1. Paragraph 7 revised. Paragraphs 8 to 17, and Tables1, 3, 5, and 6 deleted.

710SB-710 Revision Addition of UNS N08332.

729SB-729 Revision Certification has been made mandatory. "Hot finished pipe and tube" added to para. 1.1.

815SB-815 Addition New specification for ASME for UNS R31233 rod.

818SB-818 Addition New specification for ASME for UNS R31233 plate, sheet, and strip.

829SB-829 Revision Requirement for certification made mandatory. Add coverage for hot finished product. Deleted Table 1 - Product (Check) Analysis Tolerances.



861SB-861 Addition ASTM has discontinued ASTM B 337 (titanium seamless and welded piping) and has replaced it with ASTM B 861 (seamless piping) and ASTM B 862 (welded piping).

862SB-862 Addition ASTM has discontinued ASTM B 337 (titanium seamless and welded piping) and has replaced it with ASTM B 861 (seamless piping) and ASTM B 862 (welded piping).

0AWS A5.10 Addition Updated to AWS Specification A5.10/ A5.10M:1999. Specification allows the use of bare aluminum and aluminum-alloy welding electrodes and rods with gas metal arc, gas tungsten arc, oxyfuel gas, and plasma arc welding processes.

AWS A5.32 Addition This AWS specification for welding shielding gases specifies minimum requirements for the composition and purity of the most popular single and multiple-component shieldinggases. The addition provides a way to simplify the specifiction of shielding gas compostions used in welding procedures.

0Notes Revision Note G6 deleted. G41, G42, G43 and W15 added. Previous W14 and W15 renumbered as W13 and W14, respectively.

182SA-182, SA-240, SA-249, SA-312, SA-351, SA-358, and SA-403

Revision Revise Table 1A for 254 SMO (UNS J93254 and UNS S31254) in specifications SA-182, SA-240, SA-249, SA-312, SA-351, SA-358, and SA-403. The subject materials have been made applicable for Section III construction up to 750°F and SA-403 (UNS S31254) has been added.

SA-182, SA-213, SA-240, SA-249, SA-312, SA-336, SA-479

Revision Permit use of Types 304L for SC I.

226SA-226 and SA-266 Revision Editorial Corrections for SA-226 Class 2 in Tables 1A, U and Y-1 and SA-266 Class 2 in Table 1A. SA-266 Cl. 2 was typed incorrectly as SA-226 Cl. 2 in the 1999 Addenda andthe yield strength was also incorrect in the 1998 edition and 1999 Addenda. Deleted the SA-226 Cl. 2 line in Table 1A as well as in Tables U and Y-1 and changed the "NP" in the VIII-1 applicability column to 1000°F in Table 1A for SA-266 Cl. 2.

240SA-240 Revision Permit use of SA-240 Types 304H, 316H, 321H and 347H up to 1500°F for SC I superheated steam service in Table 1A

249SA-249, SA-312, SA-479 Revision Permit use of Types 316L for SC I.

333SA-333, SA-334, SA-353, SA-420, SA-522, and SA-553

Revision Revision of Some Allowable Stress Values and Addition of New Note G41 for SA-522, SA-553, SA-333, SA-334, SA-353 and SA-420 in Table 1A. The subject materials represent 8% to 9% Ni steels, intended primarily for cryogenic service. Yield and tensile ratio curves were developed and it was determined that the allowable stresses were developed from the weld metal properties. Note G41 was created to indicate this. Minor changes to the allowable stress values were made for some of the materials in order to be consistent.

351SA-351 Revision Revise Tables 1A, U, and Y-1 to extend the temperature limit to 600°F for SA-351 CN7M castings for Section III and VIII-1 construction and revise values.

372SA-372 Revision Revision of Allowable Stresses in Table 1A for SA-372 Gr. D as well as the Yield and Tensile Strength Values in Tables U and Y-1. Also, addition of new note W16 stating, “Not for welded construction in Section III”.

CPart: CSubpart/Table:


DPart: DBSubpart/Table: Table 1A




508SA-508 Revision Add SA-508 Gr 2 Class 2 and Gr 3 Class 2.

541SA-541 Revision Add SA-541 Gr 2 Class 2 and Gr 3 Class 3.

789SA-789 Revision Incorporation of Code Case 2058 in Tables 1A, U and Y-1 for SA-789 welded and seamless tubing.

10028SA/EN 10028-2 Addition Inclusion of SA/EN 10028-2, Grade P295GH Carbon Steel Plate

166SB-166, SB-167, SB-168, SB-366, SB-516, SB-517, andSB-564

Addition Incorporation of Code Case 2188-4 adds UNS N06045 solution annealed grade to SB-166, SB-167, SB-168, SB-366, SB-516, SB-517, and SB-564.

333SB-333, SB-335, SB-366, SB-564, SB-619, SB-622, SB-626

Addition Incorporation of Code Case 2187-1 adds UNS N10629 to SB-333, SB-335, SB-366, SB-564, SB-619, SB-622, SB-626.

366SB-366 Revision Correct tensile strength listed in Table from 100 ksi to 110 ksi.SB-366, SB-564, SB-574, SB-575, SB-619

Revision Correction of External Pressure Chart Number for Alloy UNS N06059 from NFN-13 to NFN-14.

SB-366, SB-564, SB-619, SB-622, SB-625, SB-626, SB-649

Addition Cr-31Ni-1.5Mo-0.6Cu-N austentitic stainless steel [UNS R20033] was added to SB-366,SB-564, SB-619, SB-622, SB-625, SB-626, SB-649 via incorporation of Code Case 2227-1. This case will be annuled January 1, 2002.

SB-366, SB-564, SB-581, SB-619, SB-622, SB-625, SB-626

Addition UNS N08031 added with incorporation of Code Case 2139.

0Notes Revision Note G5 deleted.

508SA-508 Revision 3/4Ni-1/2Mo-1/3Cr-V added for SA-508 2 Cl 2SA-508 Revision 3/4Ni-1/2Mo-Cr-V added for SA-508 3 Cl 2

541SA-541 Revision 1/2Ni-1/2Mo-V added for SA-541 3 Cl 2SA-541 Revision SA-541 2 Cl 2 added.

337SB-337 Revision SB-337 replaced by SB-861 and SB-862.

338SB-338 Revision Note G8 added to SB-338 stress lines.

425SB-425 Revision Incorporation of Code Case N-572 for SB-425 (UNS N08825) in Table 2B. Since Tables2B, U, and Y-1 already has design stress, tensile, and yield strength values up to 800°F, this revision only changes the applicability column for SC III from "NP" to "800°F".

CSubpart/Table: Table 1B


DSubpart/Table: Table 2A


ESubpart/Table: Table 2B





Addition Incorporation of Code Case 2188-4 adds UNS N06045 solution annealed grade to SB-166, SB-167, SB-168, SB-366, SB-516, SB-517, and SB-564.

226SA-226 Revision SA-226 Class 2 stress line deleted.

333SB-333, SB-335, SB-366, SB-564, SB-619, SB-622, SB-626

Addition Incorporation of Code Case 2187-1 adds UNS N10629 to SB-333, SB-335, SB-366, SB-564, SB-619, SB-622, SB-626.


366SB-366, SB-564, SB-619, SB-622, SB-625, SB-626, SB-649


SB-366, SB-564, SB-581, SB-619, SB-622, SB-625, SB-626




Addition Incorporation of Code Case 2188-4 adds UNS N06045 Solution annealed SB-166, SB-167, SB-168, SB-366, SB-516, SB-517, and SB-564.

226SA-226 Revision SA-226 Class 2 stress deleted.

265SB-265, SB-338, SB-348 Revision SB-265, SB-338, SB-348 added.


366SB-366, SB-564, SB-619, SB-622, SB-625, SB-626, SB-649


SB-366, SB-564, SB-581, SB-619, SB-622, SB-625, SB-626


675SB-675 and SB-676 Revision UNS N08367 solution annealed SB-675 and SB-676 added.

723SA-723 Revision Revision of Yield Strength Values from 750°F to 950°F for SA-723 Gr. 1, Cl. 1-5 and from 850°F to 950°F for SA-723 Gr. 2 & 3, Cl. 1-5


0Notes Addition Note 19 added and notes 19 through 22 incorporated into Table Y-3's new 550°F column.

105SA-105 Addition Addition of SA-105 Forgings.

705SA-705 Type XM-12 Revision Incorporation of Code Case 2281 by extending the temperature range for SA-705, Type XM-12, Condition H1100 from 100°F to 550°F.

HSubpart/Table: Table U


JSubpart/Table: Table Y-1


LSubpart/Table: Table Y-3




723SA-723, Gr. 1-3, Cl. 1-5 Revision Increase the temp. limit for SA-723 Gr. 1-3, Cl. 1-3 from 750°F to 800°F. Also, revise the yield strength values for SA-723 Gr. 1-3, Cl. 1-5 consistency with the values in TableY-1.

0Notes to Figures Revision The external pressure charts and tabular values are based on short term properties at temperatures indicated on the chart, but do not include the effects of time dependent deformations due to creep on buckling strength of the component. The revision defines atwhat temperature above which creep effects on buckling strength must be considered by the designer.

Fig./Table NFN-22 Revision Approval of External Pressure Chart Fig. NFN-22 and Table NFN-22 and Addition of New Note 12 for UNS N06625, Gr.2 in Subpart 3

3Appendix 3 Addition Subparagraph (d) and Figures 3-500.1, 3-500.2, and 3-500.3 and subparagraph 3-800(h) have been added.

8Appendix 8 Addition New Appendix added to provide guidance on how to interpolate Section II, Part D Tables to determine the metric values.

NSubpart/Table: Subpart 3


OSubpart/Table: Appendices




1000NCA-1000 Revision Removes references to MC Standard and Piping Supports in Subsection NCA.

1110NCA-1110 Revision Clarifies that NCA applies to Divs. 1 and 2 only. WA provides requirements for Div. 3

1233NCA-1233, NF-1100 Revision Corrects errors in Section III, Div. 1 requirements of an NS Certificate Holder. , NCA-4110, NCA-8440, NCA-1233, NCA-3680, NCA-8000, NCA-9000, NF-1100, NF-2150, NF-4112, NF-4121, NF-8100

1273NCA-1273 Revision Requires that orifice plates, where the Design Pressure is not the same on both sides, shall come under the scope of Section III. Orifice plates where the design pressure is the same on both sides need not meet the requirements of Section III.

3681NCA-3681 Revision Clarifies that an NS Certificate holder may supply supports constructed to previous Code Editions and Addenda without stamping and ANI Inspection

0Table NCA-8100-1 Revision Clarifies that an NS Certificate holder may supply supports constructed to previous Code Editions and Addenda without stamping and ANI Inspection

9000NCA-9000 Revision Adds a definition for Nuclear Facility to the glossary.

3Code Book: IIINCAPart: NCA

BSubpart/Table: Article NCA-1000


DSubpart/Table: Article NCA-3000


GSubpart/Table: Article NCA-8000


HSubpart/Table: Article NCA-9000




0Appendix II Addition Appendix presents an experimental method to determine SIFs. B31 is also developing B31.J to provide rules for experimental determination of SIFs

0Appendix F Revision The rules of Appendix F may be used for evaluation of service level D loads for NB/NC/ND

0Case N-440-1 Revision New allowable stresses based on 3.5 criterion published in Supplement No. 10 for this UNS S31254 SMO alloy which is an austenitic stainless steel of nominal composition 20Cr-18Ni-6Mo.

Cases N-439, N-440 and N-441

Revision Revision of Code Cases N-439, N-440 and N-441 Using the 3.5 Factor on Tensile Strength

Various Code Cases Revision Reaffirmation of N-201-4, N-510-1, N-529, N-530, N-579, N-7-1, N-131-1, N-154-1 and N-315. N-411-1 allowed to expire.

Case N-469 Revision Allowable Stresses are updated to reflect the 3.5 factor on tensileCase N-644 Addition Weld Procedure Qualification for Procedures Exempt from PWHT in Section III, Div. 1,

Cl. 1, 2, and 3 ConstructionCase N-596 Revision Developed to correct an error in the 1996 Addenda where the reference notch orientation

was inadvertently changed to axial only. NB-2554 has not been revised to correct this so the Case is being revised to cover all Editions and Addenda's of Section III

Case N-645 Addition Allows the use of Rupture Disk Devices on Nuclear Fuel Storage Canisters, Section IIICase N-595-1 Revision Added an alternative testing procedure used in lieu of the hydrostatic test currently

required.Various Code Cases Revision Section III Code Cases for Reaffirmation N-345-1, N-369, N-536, N-520-1, N-253-9,

N-284-1, N-452, N-454-1, N-455-1, N-464, N-469, N-499-1 and Annul N-559.Case N-443-2 Revision Reaffirmation of Section III Code Case N-443-2

Case N-646 Addition Provides for alternative stress intensification factors in lieu of those specified by Table NC/ND-3673.2(b)-1 for circumferential fillet welded or socket welded joints for Class 2 or 3 piping.

###Code Book: III-1AppendicesPart: Appendices

R;z;]Subpart/Table: Mandatory Appendices


r;[;^Subpart/Table: Nonmandatory Appendices


Code CasesPart: Code Cases_Subpart/Table: Code Cases




0...Cases N-71 and N-249 Revision Update of N-71 & N-249 was originally an editorial matter to try to eliminate the brackets for electronic formatting but also includes the correction of errors in the two cases and other improvements. Corrected A688 to A668 and Group number for A519 1018HR in Table 3; deleted SA-516 & SA-537; added type as A, B and corrected P & Group for SA-542; changed A543 to SA-543; updated SA-508 4a to SA-508 4N Cl. 2; corrected P & Group for SA-508 4N Cl. 2, also S and Sm lines SA-487 10Q changed to grade 10 Class B; added new paragraph 17 on welding P-No. materials; updated weldingrequirements to reflect changes made in Sections IX and III; added paragraph to N71 to accommodate the deletion of SA materials from the case; revised paragraphs 3.0 and 5.0; deleted paragraph 4.0 to clarify the intent; revised S values in table 2 to be 3.5 factor based.

Case N-625 Revision Corrects the EPC reference number.Case N-650 Addition Provides rules for use of SA-537, Class 2 plate material in non-pressure boundary

application service 700°F to 850°F.Various Code Cases Revision Reaffirmation of N-257, N-258-2, N-290-1, N-292, N-312, N-392-3, N-405-1, N-467,

N-505, N-539, N-594, N-596. Annul N-345-1 and allow N-394 to expire.Case N-253-9 Revision Corrects errors in the Group Number and P Number designations for various materials in

the Allowable Stress Value tables of the Case.

2360NB-2360 Revision Updates the reference to ASTM E 23-98 from ASTM E 23-72.

0Various Revision Various changes to NB-3650.

3132NB-3132, Table 3132-1 Revision Updated accepted standards.

3655.2NB-3655.2 Revision Addresses several concerns regarding piping analysis in Section III.

3656NB-3656 Revision Revises the equations to provide more consistency with the available test data.

NB-3656(b)(3) Revision Revision reflects new damping values for piping systems included in Appendix N.NB-3656 Revision Addresses several concerns regarding piping analysis in Section III. Revision permits

analysis of dynamic loads (reversing and non-reversing ) using the rules contained in NB-3656(a).

4520NB-4520 Revision Section was reformatted. New paragraph and Table NB-4524 have been added, establishing maximum temperature limits and additional testing requirements based on design temperatures for different brazing filler materials.

4622NB-4622, Table NB-4622.7(b)

Revision Incorporates the provisions of Code Case N-644 into Table NB-4622.7(b)-1

4622.9NB-4622.9 Revision Revision updates requirements for baking of SMAW electrodes in NB-4622.9, NB-4622.9.10, and NB-4622.9.11.

NBPart: NB3Subpart/Table: Article NB-2000


4Subpart/Table: Article NB-3000


5Subpart/Table: Article NB-4000




2360NC-2360 Revision Updates the reference to ASTM E 23-98 from ASTM E 23-72.

3132NC-3132, Table 3132-1 Revision Updated accepted standards.

3650NC-3650 Revision Various changes to NC-3650.

3654.2NC-3654.2, NC-3655 Revision Addresses several concerns regarding piping analysis in Section III. Revision permits analysis of dynamic loads (reversing and non-reversing ) using the rules contained in NC-3655(a)

3655NC-3655 Revision Revises the equations to provide more consistency with the available test data.

3656NC-3656(b)(3) Revision Revision reflects new damping values for piping systems included in Appendix N.

4520NC-4520 Revision Section was reformatted. New paragraph and Table NC-4524 have been added, establishing maximum temperature limits and additional testing requirements based on design temperatures for different brazing filler materials.

4622NC-4622, Table NC-4622.7(b)

Revision Incorporates the provisions of Code Case N-644 into Table NC-4622.7(b)-1

2360ND-2360 Revision Updates the reference to ASTM E 23-98 from ASTM E 23-72.

3132ND-3132, Table 3132-1 Revision Updated to latest accepted standards and clarifies applicability of inspection requirements for threads and threaded products.

3650ND-3650 Revision Various changes to ND-3650.

3654.2ND-3654.2, ND-3655 Revision Addresses several concerns regarding piping analysis in Section III. Revision permits analysis of dynamic loads (reversing and non-reversing ) using the rules contained in ND-3655(a).

3655ND-3655 Revision Revises the equations to provide more consistency with the available test data.

NCPart: NCBSubpart/Table: Article NC-2000


bSubpart/Table: Article NC-3000


CSubpart/Table: Article NC-4000


NDPart: NDfSubpart/Table: Article ND-2000


GSubpart/Table: Article ND-3000




3656ND-3656(b)(3) Revision Revision reflects new damping values for piping systems included in Appendix N.

4520ND-4520 Revision Section was reformatted. New paragraph and Table ND-4524 have been added, establishing maximum temperature limits and additional testing requirements based on design temperatures for different brazing filler materials

4622ND-4622, Table ND-4622.7(b)

Revision Incorporates the provisions of Code Case N-644 into Table ND-4622.7(b)-1

2360NE-2360 Revision Updates the reference to ASTM E 23-98 from ASTM E 23-72.

3132NE-3132, Table 3132-1 Revision Updated to latest accepted standards and clarifies applicability of inspection requirements for threads and threaded products.

1110NF-1110 Revision Removes references to MC Standard and Piping Supports in Subsection NF.

2121NF-2121(b) Revision Clarifies that many of the exempt items identified in NF-2121(b) are exempt from requirements of other Articles of NF, not just Article NF-2000. Also adds a new subparagraph to NF-1110 delineating all of the requirements for exempt items and revisesNF-2121(b) accordingly. In addition, revision eliminates a "such as" associated with the laundry list of exempt items.

2360NF-2360 Revision Updates the reference to ASTM E 23-98 from ASTM E 23-72.

gSubpart/Table: Article ND-4000


NEPart: NEKSubpart/Table: Article NE-2000


kSubpart/Table: Article NE-3000


NFPart: NFOSubpart/Table: Article NF-1000


oSubpart/Table: Article NF-2000


PSubpart/Table: Article NF-3000




3132NF-3132, Table 3132-1 Revision Updated to latest accepted standards and clarifies applicability of inspection requirements for threads and threaded products.

3350NF-3350 and NF-3360 Revision Eliminates required application of high cycle fatigue analysis for Class 2 & 3 supports.

4112NF-4112, NF-4121 Revision Corrects errors in Section III, Div. 1 requirements of an NS Certificate Holder. , NCA-4110, NCA-8440, NCA-1233, NCA-3680, NCA-8000, NCA-9000, NF-1100, NF-2150, NF-4112, NF-4121, NF-8100

0Appendix II Addition Appendix provides users with additional insight into the basis of rules, thereby providinga better understanding and better support designs.

0NF-B-3000 Revision Editorial revision to clarify that NF-B-3000 is also applicable to Class MC supports.

2360NG-2360 Revision Updates the reference to ASTM E 23-98 from ASTM E 23-72.

pSubpart/Table: Article NF-4000


R;z;]Subpart/Table: Mandatory Appendices


r;[;^Subpart/Table: Nonmandatory Appendices


NGPart: NGTSubpart/Table: Article NG-2000




4333.2CC-4333.2.3 Revision Incorporates Code Case N-363 into the Code.

4552CC-4552, Table CC-4552-2 Revision Allows the PWHT exemptions that were permitted for concrete reactor liners to also be used for containment liners.

5521CC-5521(g) Revision Examination requirements were added in the 1992 addenda. This revision was not intended to apply to small structural members used on the back side of the liner to anchor the liner.

CC-5521(d) Revision Revisions to CC-3841, CC-5521, CC-5548, Appendix clarify that liner anchor welds need only be visually examined per CC-5521(d).

CC-5521 Revision Clarifies that the welds made using back-up bars shall be examined as required by CC-5521 (UT or MT for full length).

5531.2CC-5531.2 Revision Removes an arbitrary requirement calling for increased number of radiographs of double-sided welds, when a portion of the liner uses backup bars and single-sided welding.

###Code Book: III-2Part:

FSubpart/Table: CC-4000


GSubpart/Table: CC-5000




0Article WA Revision Entire Article has been rewritten to closely align it with the more familiar General Requirements format of Division 1, and to eliminate inconsistencies and errors.

3230WB-3230 Revision Various editorial corrections to agree with requirements in Subsection NB. Sm corrected to Su, numbering inconsistencies corrected, "Membrane stress intensity" corrected to "Axial stress component"

###Code Book: III-3Part:

BSubpart/Table: WA-1000


KSubpart/Table: WB-3000




512.2HG-512.2(n) Revision The designation "test engineer" was changed to "Certified Individual" and definition paragraph references have been added.

HG-512.2(p) Addition Manufacturers must now provide, or make available for review, the Certificates of Conformance for cast iron boiler sections.

530.2HG-530.2 and HG-534 Revision Paragraphs HG-530.2 and HG-534 now require Manufacturers to apply the nameplate to the casing for field assembled cast iron boilers and provide instructions to the installer for hydrostatic testing of the assembled boiler.

603HG-603 Revision Revision permits the use of primary indirect level indicators when used in conjunction with a secondary water gauge glass. Service and maintenance of the unit must be capable of being performed, while the boiler is operating, as is currently required for direct reading gauge glasses.

204HF-204 and HW-610 Revision This addition confirms that tubes with ERW fins attached and used for extended heating surfaces can be supplied as miscellenous pressure parts. Also, the welding of the fins to the tubes need not be perfomed by a Code Certificate holder. This change incorporates the requirements of ASME Interpretation IV-98-26.

300.2HF-300.2, Table HF-300.2 Addition Addition of SB-409 (UNS N08810 and N08800) to permitted materials. Typically this material would be used for the fabrication of high efficiency condensing hot water boilers where corrosion resistance is needed to handle corrosive fluids condensed out of the flue gases. The applications is limited to hot water boilers. Cautionary notes on its use were also added.

403HC-403, HC-502.12, HC-520 Revision HC-502.12 added and HG-515.2(n) and HC-403 modified to bring Section IV into compliance with the requirements of CSP-53 with respect to cast iron boilers. These changes include the Certified Individual and use of new Certificates of Conformance forms HC-1 and HC-2. The reason for the change is for ASME to provide rules for designated oversight where an ASME Code Symbol stamp is used.

0Table HLW-300 Revision Revision corrects the sorting of the table. SA-515 and SA-516 added to the plate specification list. Sheet specification removed from "plate" and given own heading.

4Code Book: IVPart:

CSubpart/Table: Part HG


DSubpart/Table: Part HF


GSubpart/Table: Part HC


HSubpart/Table: Part HLW




0Appendix F Revision Revision was done to clearly include brazing in the Quality Control System Appendix.Appendix L Addition Form HC-1, Manufacturer's Material Certificate of Conformance for Cast Iron Boiler

Sections, and HC-2, Manufacturer's Material Certificate of Conformance for HydrostaticTesting of Cast Iron Boiler Sections, have been added.

2Appendix 2 Revision 2-200, Table 2-100, and index editorially revised.

2256Case 2256 Revision Case 2256 reaffirmed.

2258Case 2258 Revision Case 2258, Use of Flared Tubing Fittings for Attachment of Watertubes reaffirmed.

2259Case 2259 Revision Revise and renew Case 2259 with the addition of Grades 1010 and 1015.

2320Case 2320 Addition New Case permitting the use of austinetic stainless steel studs for the external fastening of detachable components and appurtenances.

2344Case 2344 Addition Use of sand cast aluminum alloy A356.0, T6 temper for the manufacture of heating boilers under Part HC.

ISubpart/Table: Appendices


KSubpart/Table: Code Cases




2Article 2, Appendix IV Revision Editorial revision to Article 2, Mandatory Appendix VI, Supplement A to describe required targets.

Article 2, T-272 Revision Revision permits the use of any source of radiation as long as the completed radiograph achieves the density and IQI image requirements of Article 2.

Article 2, 4, 5, 6, 7, 8, 9, 10, 11, 12, & 13

Revision Revision to Articles 2, 4, 5, 6, 7, 8, 9, 10, 11, 12, & 13 for clarification and consistency.

Article 2, Appendix IV Revision Update SE-1647. The 1998a version of E 1647 is essentially identical to the 1994 version currently published as SE-1647, except for editorial changes in paragraphs 6.3.1.1, 6.3.2.1, 6.3.3.1, and 6.4. These editorial changes have no affect on the applicability of SE-1647.

Article 2, T-221.1 Revision Title has been deleted and second sentence revised for clarity.Article 2, Appendix IV Revision Title of VI-A-240 editorially revised and paragraph references of VI-A-244 have been

updated for consistency.

4Article 4, T-423 Addition New paragraph has been added that requires ultrasonic examination be performed in accordance with a written practice when this Article is specifed by the referencing Code Section.

5Article 5 and Article 24 Revision Titles in Article 5, T-541.1, T-541.2 and T-541.3 and Article 24 Table of Contents revised to reflect ASTM adoptions.

6Article 6, T-610.1 Revision Reference to ASTM E-1209 deleted. Article 6 does not require compliance to nor references specific requirements, tables or figures contained in the ASTM Standards Practices.

Article 6, T-610.1 Revision Reference to ASTM E-1219 deleted. Article 6 does not require compliance to nor references specific requirements, tables or figures contained in the ASTM Standards Practices.

Article 6, T-610.1 Revision Reference to ASTM E 1220 deleted. Article 6 does not require compliance to nor references specific requirements, tables or figures contained in the ASTM Standards Practices.

7Article 7, T-778.1 Revision Lighting requirements have been revised to agree with those specified for color contrast examinations in Article 25, SE-709 Standard Guide for Magnetic Particle Examination, Para. 7.1.1. The light source, technique and level verification now must be demonstrated one time, documented, and maintained on file.

Article 7, Appendix III Addition Magnetic Flux Leakage Examination added. Technique will now be available for a varietyof post construction applications when required by referencing Code Sections.

Article 7, T-750 Addition New wording requires that MT be performed in accordance with a written procedure.

8Article 8 and Article 26 Revision Reference to ASTM E309-95 deleted. Deletion of SE 215 from Article 26 and para. T-810 was based upon the fact that no specific requirements of this document are referenced in Article 8.

Article 8 and Article 26 Revision Reference to ASTM E426-92 & E426-98 deleted. Deletion of SE-426 from Article 26 and Article 8, para. T-810 was based upon the fact that no specific requirements of this document are referenced in Article 8.

Article 8 and Article 26 Revision Reference to ASTM E571-92 and E571-98 deleted. Deletion of SE-571 from Article 26 T.O.C. and Article 8, para. T-810 was based upon the fact that no specific requirements of this document are referenced in Article 8

Article 8 Revision All of Article 8 has been reformatted to standardize the format with the rest of Section V. Changes include a table listing requirements for written procedures and requirements for procedure qualification.

5Code Book: VPart:

BSubpart/Table: Subsection A




8...Article 8, Appendix III Revision Article 8, Appendix III has been reformatted in order to standardize it with the rest of Section V.

9Article 9 Revision The revision consists of a change in format, editorial corrections and technical revisions of the Article and Appendix I. Technical changes include new requirements for illumination, a new term "'Lux" has been added to Appendix I, Glossary of Terms and reference to SD-2563 has been deleted

Article 9 Addition Article 9 has been revised in order to standardize it with the other Articles of Section V. Changes include a table listing requirements for written procedures and requirements for procedure qualification.

10Article 10 Revision Minor editorial changes were made to Article 10 Appendices to make the wording from Appendix to Appendix consistent. Article 10, T-1010 revised for consistency. Split-up Article 10, Appendix V into two separate Appendices. Change Appendix V to Helium Mass Spectrometer Test – Tracer Probe Technique and add a new Appendix IX for the Helium Mass Spectrometer Test – Hood Technique. New Appendix IX also has added to it, as an option, an alternative Hood technique utilizing a System Correction Factor as outlined in ASTM Standard E1603-94.

Article 10 Addition This is an existing leak testing technique that is used in industry. This new Appendix codifies the method.

11Articles 11, 12 and 13 Revision T-1128, T-1225, and T-1350 revised for clarification and consistency with wording in other Articles of Section V

22Article 22 Revision Article 2 does not reference SE-186, SE-280, SE-446 from Article 22.Article 22 Revision Reference to ASTM E 242 deleted. No specific references are made to this document.

Article 22 Revision There are no necessary requirements in SE-142 that are not already covered in Article 2.

26Article 26 Revision Review ASTM E215-87 and E215-98 and update. Delete SE 215 from Article 26 and para. T-810 based upon the fact that no specific requirements of this document are referenced in Article 8.

30Article 30 Revision Update SE-1316 to reflect ASTM E 1316-99.

CSubpart/Table: Subsection B




0Table U-3, ASTM E 186, ASTM E 446, Appendix 7, 7-3(a)(1), 7-3(b)(2)

Revision These reference standards are being added to Table U-3 in response to the removal of SE-186, SE-280 and SE-446 from Section V. ASTM 186 & 446 contain standard reference radiographs for steel castings.

Table U-3, UW-51(a)(2), Footnote 11, Appendix 12, 12-2

Revision Revision adds ASNT CP-189 "Standard for Qualification and Certification of Nondestructive Testing Personnel" as alternative methods for certifying NDE examiners.ASNT CP-189 provides for verifying the knowledge and skills of an NDE examiner in a fashion that is more demanding than SNT-TC-1A. Some ASME Manufacturers must comply with this standard for the type(s) of production they undertake due to market considerations.

2U-2(h)(1), Appendix W Revision This revision adds field activities (construction and inspection) to form U-1A in Appendix W. In addition, U-2(h)(1) needed to be revised to correctly reference both Forms U-1 and U-1A.

31UG-31(c)(2), UG-45(a) Revision This item deals with the minimum wall thickness of nozzle neck with a threaded end. It stems from an inquiry asking if additional wall thickness to compensate for wall loss due to threading, as well as mill under tolerance and corrosion allowance, should be added to the minimum required thickness of a nozzle neck. UG-31(c)(2) is quite clear in its requirement for additional thickness to compensate for that thickness which is removed when the end of a pipe or tube is threaded. This conceptis consistent with other Standards such as Section I (PG-27) and B31.3. However, the situation of a nozzle neck made of a pipe or tube with a threaded end is not specifically addressed in UG-45. Word "tube" deleted from the first line UG-31(c)(2).Revision clarifies paragraph UG-45(a) for minimum thickness of a nozzle neck to be not less than that computed for the applicable loadings in UG-22, plus the thickness added for allowances such as corrosion or threading.

32UG-32(e), Appendix 1, 1-4 Footnote (1)

Revision UG-32(e) and Appendix 1-4 deal with the design of formed heads under internal pressure. For materials having UTS equal to or greater than 80 ksi, the allowable design stress has been specified as 20 ksi in these paragraphs. Due to the new design margin of 3.5, the limit on the UTS has been reduced to 70 ksi to maintain the 20 ksi stress limit (70/3.5=20).

36UG-36(c)(3)(a) Revision Reinforcement exemption rules for small openings was extended to include flued openings.

45UG-45, UG-45(b) ,AppendixL

Addition Examples of UG-45 rules were added to Appendix L, Examples L-7.1 through L-7.8. In addition an introduction paragraph was added to UG-45 and revisions made to UG-45(b)to clarify the steps required to size a nozzle, and to direct code users to the examples in Appendix L.

46UG-46(g)(1) Revision The minimum elliptical or obround manhole size has been increased from 11 in. x 15 in. to 12 in. x 16 in. The minimum size of a circular manhole has been increased from a diameter of 15 in. to 16 in. Additionally, there was no provision made for using up existing stock of manways . THIS REVISION COULD HAVE A SIGNIFICANT IMPACT ON SOME MANUFACTURERS.

###Code Book: VIII-1Part:

BSubpart/Table: Introduction


CSubpart/Table: Part UG




77UG-77(a) Revision In the current Code, UG-77(a) states that "one complete set of the original identification markings required in the specifications for the material will plainly visible". This suggeststhat all material for pressure parts must contain the full marking required by the material specification. This is in conflict with UG-94 and UG-93 which only require full marking per the specification for plate material; for all other product forms (forgings, casting, pipe, tube) Section VIII-1 only requires the material to be marked with specification, type, class, and grade as applicable. This revision to UG-77(a) now correctly references UG-94 for the required material marking.

101UG-101(m)(2)(a), UG-101(m)(2)(c)

Revision In response to the change in the design margin on ultimate tensile strength from 4.0 to 3.5, the burst test factor in UG-101(m) was reduced from 5.0 to 4.0. An early implementation Code Case (Case 2348) was also approved.

129UG-129(e)(9), UG-131(l) Revision Flow resistance certification tests for rupture disk for different test mediums are differentand provide for different flow resistance factor. The proposed revisions would clarify this matter and have the resistance factor properly indicated on the nameplate.

UG-136(c)(4)(a)(1) Revision This revision to UG-136(c)(4)(a)(1) allows one Assembler to transfer pressure relief parts to another pressure relief valve Assembler without the prior authorization of the valve Manufacturer.

14UW-14(a)(1) Revision Paragraph UW-14 provides additional NDE requirements when small openings are located in or adjacent to main pressure vessel welds. This revision clarifies that the rules also applies to small openings in flat plates (UG-39).

16UW-16(a)(3) Revision Paragraph UW-16(a)(3), which was first published in the '97 Addenda, introduced requirements for chamfering and rounding of projecting edges and bend radii for Fig. UW-16.1 nozzle details. Many Code users questioned the value of these added requirements, resulting in the paragraph being deleted. The end result is that minimum chamfering and rounding of nozzle projection edges is only required when called out in a particular sketch of Fig. UW-16.1.

21UW-21 Addition New paragraph UW-21 introduces rules for attachment of socket weld and slip-on flanges. Weld details are presently not given for ANSI B16.5 socket weld flanges welded to a nozzle neck, nor for ASME B16.5 Slip-On flanges welded to a nozzle neck. For a socket weld flange, a single external fillet weld is permitted. For an ASME B16.5 slip-on flange welded to a nozzle neck, both an internal and external fillet weld are required.

26UW-26(d)(2), UW-28(d), 10-9

Revision These revisions permit the use of standard welding procedure specifications (SWPS) for pressure vessel construction. The revision in UW-26(d)(2) assigns the need for a qualification to Section IX. UW-28(d) addresses the use of SWPS. Appendix 10-9 revision adds requirements for the Manufacturer to address adminstrative control of SWPS.

51UW-51(a)(3), Appendix 7, 7-2(c)

Revision Recent changes in ASME Section V make all paragraphs in Article 2 mandatory. These changes have the effect of requiring written procedures for radiographic examinations for ASME Div. 1 and Div. 2 work. This is not presently a requirement. The proposed changes to Div. 1 and Div. 2 have the effect of maintaining the present requirements by permitting radiographic examination without written procedures. Clarifying information is also included to provide a means for demonstrating compliance with ASME V, Article 2 image density and penetrameter requirements.

DSubpart/Table: Part UW


GSubpart/Table: Part UCS




56UCS-56(d)(2) Errata In the second line of UCS-56(d)(2) the heating rate presented in SI units was corrected to222°C/hr.

78UNF-78 Revision Laser beam welding was added as one of the acceptable welding processes for welding titanium and zirconium. This revision is a result of the incorporation of Code Case 2018-2.

51UHA-51(a)(2), UHA-51(a)(4), UHA-51(d)(1)(a), UHA-51(f)

Revision Earlier research work conducted at MIT and NIST indicated that CVN specimens with initial temperature at or near -452°F actually fracture at temperatures significantly warmer than -452°F due to adiabatic heating. As a result, ASTM E-23 was revised to incorporate a restriction that CVN tests are only valid at -320°F and warmer. At the request of ASME, the PVRC undertook a test a program to develop correlation between CVN lateral expansion (LE) at -320°F and Kic at -452°F. The results of the PVRC research led to the following revisions:(1) For MDMT colder than -320°F, use CVN tests at -320°F with additional conditions:(a) type 316L weld filler (b) LE=21 mils (c) FN=5 (2) For weld not meeting the above, use ASTM E1820 Jic test. The Kic(J) shall not be less than 120 ksi(in)2 at MDMT. (3) CVN exemption temperature on Type 304, 304L, 316, 316L, 321 and 347 SS has been changed from -425° F to -320°F. THIS COULD HAVE A SIGNIFICANT AFFECT ON SOME MANUFACTURERS!

35UCL-35(a), UCS-35(c)(4) Revision In vessels constructed of base material with corrosion resistant integral or weld metal overlay cladding, paragraph UCL-35(c) contains provisions for performing radiographic examination of the base material weld, if required by the Code, prior to depositing the alloy cover weld. Under these provisions, it is recognized that the application of the alloy cover weld does not adversely affect the base metal weld. However, the current wording of UCL-35 specifies the material thickness for determining the radiography requirement as the total thickness of the clad construction. The proposed revisions will specify the thickness of the base material as the criteria for determining radiography requirements for those situations where radiography of the base material weld is permitted by UCL-35(C) prior to application of the alloy cover weld.

40UCL-40, UCL-41, and UCL-44

Revision The provisions of UCS-44(b) and Code Case 2220 for qualification of welding procedures for attachment of applied linings were incorporated into QW-218 of Section IX in the '97 Addenda. [W95-54] . These revisions removes the now redundant requirements from Section VIII, Divisions 1 with the deletion of UCL-41 and UCL-44, and a revision to UCL-40.

HSubpart/Table: Part UNF


ISubpart/Table: Part UHA


KSubpart/Table: Part UCL




6UHT-6(b) Revision This action harmonizes the toughness requirements between Section VIII, Divisions 1 and 2, and Section II, Part D. The revision to UHT-6(b) adds coverage to SA-353 and SA-553 for use at MDMT's colder than -320°F. The revision to Section II, Part D, Table1A removes reference to General Note G6. which restricted use of the material below -275°F.

82UHT-82 Revision The intent of these revisions is to bring Division 1 and 2 requirements for welding and impact testing of Part UHT materials into harmony. A breakdown of the changes are:1. UHT-82(c) - expanded to two paragraphs, UHT-82(c) & (d); 2. New paragraph UHT-82(d) breaks out a list of specifications which are exempt from production impact testing.3. UHT-82(e)(2) - clarifiation of the interpass and preheat temperature limits when treated as essential variables.4. UHT-82(e)(6)(b) - originally UHT-82(d)(6)(b); requirement that electrodes be purchased or conditioned so as to have a coating moisture content not greater than 0.2% by weight now applies to all electrodes used for shielded metal arc welding.

0Figs. ULW-17.1, 17.2, 17.4, 18.1, 32.4, & 77

Errata Numerous errata and Note clarificatons were made to the referenced Figures.

0Table ULT-23, ULT-99 Revision The allowable stresses in Table ULT-23 were revised to reflect the change in design margin on ultimate tensile strength from 4.0 to 3.5. Additional revisions include:1. Table ULT-23 is now provided in both U.S. Customary and SI units.2. The Type 304 Stainless Steel table now has entries for both welded and nonwelded construction.3. Note (3) was revised to include: "Choice of UTS depends on welding process and fillermetal used in the construction." This refers to the 8% and 9% nickel steels where the UTS for welded construction may be taken as 100 ksi or 95 ksi.4. ULT-99(a) - The hydrostatic test pressure factor was reduced from 1.6 to 1.4.5. ULT-99(b) - The hydrostatic test pressure factor was reduced from 125% of the MAWP to 110% of the MAWP. This change could impact some Manufacturers by now requiring a pneumatic test in addition to the hydrostatic test.6. ULT-99(c) - The hydrostatic test pressure factor was reduced from 1.6 to 1.4.

0Table UNF-23, R20033 Addition Cr-31Ni-1.5Mo-0.6Cu-N austentitic stainless steel [UNS R20033] was added to SB-366,SB-564, SB-619, SB-622, SB-625, SB-626, SB-649 via incorporation of Code Case 2227-1. This case will be annuled January 1, 2002.

Table UCS-23, SA-508, SA-541

Revision Add SA-508 Gr 2 Class 2, SA-508 Gr 3 Class 2, SA-541 Gr 2 Class 2 SA-541 Gr 3 Class 3.

MSubpart/Table: Part UHT


NSubpart/Table: Part ULW


OSubpart/Table: Part ULT


PSubpart/Table: Tables




0...Table UNF-23.3, N06045 Addition UNS N06045 added to SB-166, SB-167, SB-168, SB-366, SB-516, SB-517, and SB-564 with the incorporation of Code Case 2188-4. The case will be annuled on January 1, 2002.

Table UNF-23.3, UNS N10629

Addition UNS N10629 added to SB-333 SB-335, SB-366, SB-564, SB-619, SB-622, and SB-626 with the incorporation of Code Case 2187-1. The case will be annuled on January 1, 2002.

Table UNF-23.3, UNS N08031

Addition UNS N08031 added to SB-366 SB-564, SB-581, SB-619, SB-622, SB-625, and SB-626 with the incorporation of Code Case 2139. The case will be annuled on January 1, 2002.

Table UNF-23.4, SB-861, SB-862

Revision ASTM has discontinued ASTM B 337 (titanium seamless and welded piping) and has replaced it with ASTM B 861 (seamless piping) and ASTM B 862 (welded piping). SB-337 was redesignated as SB-861. SB-862 (welded piping) was added.

2Appendix 2, 2-2(d)(3) Errata This Errata corrects an error in 2-2(d). The requirement to MT/PT the backside of a fabricated hub was to only apply to hubbed flanges machined from plate or bar stock, and not all hubbed flanges. By redesignating paragraph 2-2(d)(3) to 2-2(d)(2)(c) this long standing error is finally corrected.

Appendix 2, 2-13(a)(1) Errata The second line of 2-13(a)(1) corrected "loose ring type reverse flanges" to "integral typereverse flanges".

6Appendix 6, 6-3, Appendix 8, 8-3

Revision Paragraph 6-4(d) and 8-4(d) were moved to 6-3 and 8-3 respectively, since this paragraph is related to evaluation of indications, and not acceptance standards.

13Appendix 13, 13-5 Footnote 1, 13-17(a)(2)

Revision These revisions clarify that for noncircular vessels with Category C corner joints (insteadof butt welds), the joint efficiency E used in the equations is equal to 1.0, since the stresses in these joints are controlled by the applicable rules for sizing such joints.

Appendix 13, 13-8(d) Revision Paragraph 13-8 contains rules for rectangular vessels with reinforced stiffeners. An inquiry was received several years ago questioning the calculation of the effective width of the shell plate which can be used in computing the effective moments of inertia. Finiteelement analaysis of several typical designs confirmed that high localized stresses near the corners may significantly exceed the bending stresses calculated per 13-8(e). A new paragraph, 13-8(d)(4), was introduced to warn the vessel designer of this possibility, andto suggest additional analyses as permitted by U-2(g). In general, these high localized stresses are primarily of concern for vessels in cyclic service; thus a fatigue evalaution may be warranted.

14Appendix 14, 14-5 Revision Revisions were made to Appendix 14 to clarify use of the design procedure. In addition two fully worked out examples (integral flat head with and without a central nozzle) havebeen added which will greatly help code users with meeting the Appendix 14 requirements. NOTE: With these examples, it is possible that some Manufacturers will discover some mistakes in their previous Appendix 14 calculations; therefore, it is strongly recommended that all existing Appendix 14 designs be checked following the detailed procedure presented in the examples.

22Appendix 22, 22-5(a) Revision Integrally forged vessels constructed under the supplemental rules of Appendix 22, require two MAWP ratings to be stamped on the vessel: 1) the MAWP based on the design margin permitted by Part UF; 2) the design margin of 3.0 on UTS as permitted by Appendix 22. This revision to 22-5(a) was necessary following the reduction in Section VIII-1 design margin from 4.0 to 3.5 on specified minimum tensile strength.

QSubpart/Table: Mandatory Appendices




23Appendix 23, 23-3(b) Revision This revision introduces a strength adjustment factor, F, which is a function of the material temperature. The adjustment factor is only required for titanium alloy tubes, which exhibit a marked reduction in strenth as the temperature increases. The factor is the ratio of the allowable stresses at design temperature to that at test temperature. An allowable stress ratio was used in lieu of a yield strength ratio because not all yield strengths are published in Section II, Part D for titanium alloy tubes.

26Appendix 26, 26-3(d), 26-6 Revision This action is to make the pressure testing requirements of Appendix 26, 26-3(d) consistent with hydrostatic and pneumatic test requirements of UG-99 and UG-100, respectively. Pneumatic testing was added as an option to 26-6.

Appendix 26, 26-8(b) Errata The calculation for Ar following the phrase "Check stresses in reinforcing ring:" was correct to 0.196. The subsequent calculation of SRcmp was then corrected to 16,870 psi.

27Appendix 27, 27-5(b), Code Case 2209

Revision Code Case 2209 provides production impact test exemption rules for glass lined vessels fabricated from 316L SS alloy. The provisions of this case were incorporated into paragraph 27-5(b).

Appendix 27, 27-4(b) Revision SA-106 pipe and SA-414 Grades A and B sheet were added to 25-4(b), thus exempting these materials from simulated test requirements of UCS-85 when all the conditions of 27-4(b)(1) through (4) are met.

28Appendix 28, 28-2(f) Errata In the 3rd line of 28-2(f), reference to UW-13(c)(4) was corrected to UW-13(e)(4).

31Appendix 31 Revision This revision corrects an error when the Code Cases 1960-4, 1961-1 and 2098-2 were first incorporated into Section VIII-1 to create Appendix 31. This revision clarifies the last sentence to 31-4(a) by stating that the limitation of SAW and SMAW processes is for the welding of 3CR-1Mo-1/4V-Ti-B material only.

0Appendix L, L-10 Addition Examples illustrating the rules of UW-20 for tube-to-tubesheet welds were added to L-10.

Appendix L, L-9 Revision Example L-9 deals with the use of UCS-66 rules on the determination of MDMT. Revised to incorporate higher allowable design stresses due to a new design margin of 3.5 on UTS.

Appendix AA Revision The mathematical derivation of Zd, Zv,Zm and Fm was added in Table AA-2.4, resultingin the deletion of Tables AA-2.4.1, AA-2.4.2-1, AA-2.4.2.-2, and editorial revisions to Figs. AA-2.4.2-1 and AA-2.4.2-2.

Appendix AA, Fig. AA-2.0,AA-2.4.9(a), AA-2.4.10

Revision (1) Fig. AA-2.0 - In sketch (c), dimension line for G added.(2) AA-2-4.6 - The average temperature of the unperforated rim (Tr) is changed so that only those components integral to the tubesheet are averaged.(3) AA-2.4.6 - gb defined for configuation c; variable G defined in equation.(4) AA-2.4.9(a), AA-2.4.10 - The allowable shell and channel stresses for the thermal cases are clarified as 3Ss or 3Sc. (5) AA-2.5.3(b) - ss,m added to (Step 9)(6) AA-2.5.3(d) - Clarification added on substitutions to make when performing elastic-plastic calculations.(7) AA-2.6 - Equations for facts and factc revised.

1500Cases 1500-3, 1671-1, and 2195

Revision These cases were revised to reflect the change in design margin on UTS from 4.0 to 3.5. Also a correction was made to the allowable stress table in Case 1671-1.

RSubpart/Table: Nonmandatory Appendices


SSubpart/Table: Code Cases




1932Cases 1932-2, 1953-3, 2125-2, 2187-1, 2222-1,2239,2240, 2242

Revision The allowable stresses in these cases were revised to reflect the change in design margin on UTS from 4.0 to 3.5.

1956Cases 1956-5, 2029-2, 2058, 2120, 2230-1, 2268

Revision The allowable stresses for these cases were revised to reflect the change in design margin on UTS from 4.0 to 3.5.

2038Cases 2038-4, 2097, 2123-3, 2139, 2224, and 2227

Revision The allowable stress values were reviewed using the criterion of 3.5 on tensile strength. Minor editorial changes were made. For Code Case 2038-5 some yield strength values were changed by SC II based on reanalyzing the available data. The revised stresses were approved by SC II at the February and May meetings. There was also an error in the conversion of the design stress intensity for 600°F in Code Case 2038-4 and the revisions to the Code Case correct this discrepancy.

2162Case 2162-1 Revision The allowable stresses for this material were revised to reflect the change in design marginon UTS from 4.0 to 3.5.

2196Cases 2196, 2197, 2223-1, 2188-3, 2198, 2217-1, 2218-1, and 2276

Revision The allowable stresses in these materials cases were revised to reflect the change in designmargin on UTS from 4.0 to 3.5.

2211Case 2211-1 Revision Paragraph (a) of the case was revised to remove the restriction on application to vessels in water, air, or steam servcie if these services are critical to preventing the release of fluids that may result in safety or environmental hazards.

2244Case 2244-2 Revision Case 2244 permits the use of UNS J93380 casting material for Section VIII-1 consruction. The external pressure chart for the material was revised, and the allowable stresses were revised to reflect the change in design margin on UTS from 4.0 to 3.5.

2245Case 2245-1 Revision Case 2245 permits the use of 25Cr-7.5Ni-3.5Mo-N-Cu-W alloy for Section VIII-1 construction. The external pressure chart was revised as well as the maximum allowable stresses.

2316Case 2316 This case permits the use of duplex austenitic-ferritic stainless steel UNS S39274 for Section VIII-1 construction.

2319Case 2319-1 Addition This case permits the use of UNS N10242 alloy for Section VIII-1 construction.Case 2319-1 Revision The UNS committee approved the assignment of UNS N10242 to Ni-25Mo-8Cr-2Fe

alloy.

2321Case 2321 Addition This case provides an exemption from PWHT for P-4 and P-5 tubes in tube-to-tubesheetseal welds on P-4 or P-8 clad P- No.1 tubesheets.

2322Cases 2322, 2323 Addition These two cases permit the use of Ni-Cr-Mo-B-V quenched and tempered steel [SA-372] for Section VIII-1 construction. Case 2323 addresses use of the material for forged bottle construction under Appendix 22 of VIII-1.

2324Case 2324 Revision This Code Case permits the use of an ultrasound leak detection system in lieu of visual inspections following pneumatic testing of mass produced vessels to UG-100. This leak detection method is much more sensitive when compared to more common methods suchas a soap bubble test or vessel immersion under water.

2334Case 2334 Revision This case permits the use of a single fillet lap joint in the shell of a shell-and-tube heat exchanger. The limitations for its use are:* The tubesheet must be a casting with extended flange extension, and be of the supported design* The shell is limited to 12" OD and 1/4" thickness* Shell side MAWP < 250 psig* MDMT > -20°F* No cyclic or lethal service

2335Case 2335 Addition This case permits the use of ASTM A553/A553M-95 [8% and 9% nickel alloy steel plate] in Section VIII, Divisions 1 and 2 Construction. The current Appendix A of Section II, Part A establishes equivalency with SA-553 up to the ASTM A553-93.



2345Case 2345 Addition This is an early implementation code case for revisions to Table ULT-23. The allowable stresses for materials used in cryogenic applications were revised to reflect the change in design margin on UTS from 4.0 to 3.5. In addition, the hydrostatic and pneumatic test factors were adjusted to remain compatible with the allowable stress changes.

2346Case 2346 Addition This case provides alternative rules for the attachment of ellipsoidal or torispherical heads having an integral backing strip. The straight flange of the head is machined to receive the shell; the extended portion of the head provides a backing for the joint. Some further limitations of the case are:* MAWEP is limited to 160 psig* Maximum temperature is limited to 400°F* MDMT shall not be colder than -20°F* Cannot be in cylic or lethal service* OD of formed head is limited to 30 in.* The required thickness of the head shall not exceed 1/2 in., and the required thickness ofthe shell shall not exceed 3/16 in.

2347Case 2347 Addition This case covers the same alloy as in Code Cases 2322 and 2323, with the exception that this case covers welded construction.

2348Case 2348 Revision This in an early implementation code case for a revision to the burst test factor in UG-101(m). As a follow-on item to the change in design margin from 4.0 to 3.5 on UTS, the burst test factor has been reduced from 5 to 4.

2349Case 2349 Addition This case permits the fabrication of a Fig. UW-13.2(d) corner joint when a+b is less than 2ts. This welding is limited to autogenous laser welding.

2350Case 2350 Addition Because of published data showing a significant decrease in the strength of AlSi alloys at temperatures above 350ºF, along with a recommendation from AWS, the maximum temperature for BAlSi listed in table UB-2, column 2 was reduced from 400ºF to 350ºF inthe '97 Addenda. This revision was challenged by a Manufacturer who had significant experience brazing with this filler metal. Experience and test data presented by the Manufacturer confirms that for their specified brazed joint configuration, heat treatment and material combinations, performance at the 400ºF operating temperature has been both acceptable and predictable. This difference in results can be explained by the fact that the filler metal in the "as brazed" condition is no longer equivalent to the alloy in the published data.



0Table AG-150.1,AI-501, 9-310

Revision Revision adds ASNT CP-189 "Standard for Qualification and Certification of Nondestructive Testing Personnel" as alternative methods for certifying NDE examiners. ASNT CP-189 is a standard that provides for verifying the knowledge and skills of an NDE examiner in a fashion that is more demanding than SNT-TC-1A. Some ASME Manufacturers must comply with this standard for the type(s) of production they undertake due to market considerations.2) SNT-TC-1A - updated to 1996 Edition, A98

Table AG-150.1.AM-252.1 Revision These reference standards are being added to Table AG-150.1 in response to the removal of SE-186, SE-280 and SE-446 from Section V. ASTM 186 & 446 contain standard reference radiographs for steel castings.

0Table ACS-1, SA-508, SA-541

Revision Add SA-508 Gr 2 Class 2, SA-508 Gr 3 Class 2, SA-541 Gr 2 Class 2 SA-541 Gr 3 Class 3.

Table ANF-1.4, SB-861, SB-862

Revision ASTM has discontinued ASTM B 337 (titanium seamless and welded piping) and has replaced it with ASTM B 861 (seamless piping) and ASTM B 862 (welded piping). SB-337 was redesignated as SB-861. SB-862 (welded piping) was added.

211.2AM-211.2, AM-211.4(b)(2), AM-213(b)(1)(a), and AM-213(d)

Revision Earlier research work conducted at MIT and NIST indicated that CVN specimens with initial temperature at or near -452°F actually fracture at temperatures significantly warmer than -452°F due to adiabatic heating. As a result, ASTM E-23 was revised to incorporate a restriction that CVN tests are only valid at -320°F and warmer. At the request of ASME, the PVRC undertook a test a program to develop correlation between CVN lateral expansion (LE) at -320°F and Kic at -452°F. The results of the PVRC research led to the following revisions:(1) For MDMT colder than -320°F, use CVN tests at -320°F with additional conditions:(a) type 316L weld filler (b) LE=21 mils (c) FN=5 (2) For weld not meeting the above, use ASTM E1820 Jic test. The Kic(J) shall not be less than 120 ksi(in)^2 at MDMT. (3) CVN exemption temperature on Type 304, 304L, 316, 316L, 321 and 347 SS has been changed from -425° F to -320°F. THIS COULD HAVE A SIGNIFICANT AFFECT ON SOME MANUFACTURERS!

100AD-100(b), AD-100(c), AD-200(a), 4-136.3, 4-136.4,4-136.5

Revision This revision deletes the last sentence of AD-100(b), and introduces new paragraph AD-100(c). The essence of the change is to permit a designer to carry out a stress analysis per Appendix 4 in lieu of satisfying the design rules of Part AD. When using theanalysis option, the resulting wall thickness of the vessel wall or part cannot be less than that required by the formulas of AD-201 through AD-206, except for local shell regions. This change would permit a local section of a shell to have a thickness less than that calculated by formula. One practical example where this could apply is a short cylinder, where the full hoop stress is unable to develop due to the end restraints of the heads.


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ESubpart/Table: Part AD




101AD-101(b)(2)(a) Revision This is an editorial revision to clarify the references to AD-101(b)(1)and AD-101(b)(3).

1020.1AD-1020.1 Revision The minimum elliptical or obround manhole size has been increased from 11 in. x 15 in. to 12 in. x 16 in.. The minimum size of a circular manhole has been increased from a diameter of 15 in. to 16 in. Additionally there was no provision made for using up existing stock of manways. THIS REVISION COULD HAVE A SIGNIFICANT IMPACT ON SOME MANUFACTURERS.

540.2AD-540.2, AD-621, AD-635,Fig. AD-612.1, Fig. AD-621.1

Revision Due to a request from a vessel Manufacturer, the Section VIII, Division 1 nozzle Sketches (a-2), (a-3) and (a-4) given in Fig. UG-40 has been incorporated in Division 2. New AD-540.2(d) has been added to provide the rules on the allowable reinforcement limit normal to the vessel wall for these sketches.

210.1AF-210.1(b)(2), AF-210.2, 18-117

Revision These revisions permit the use of standard welding procedure specifications (SWPS) for pressure vessel construction. The revision in AF-210.1(b)(2) assigns the need for a qualification to Section IX. AF-210.2 addresses the use of SWPS. Appendix 18 revisionadds requirements for the Manufacturer to address adminstrative control of SWPS.

520AF-520, AF-521, AF-522, AF-540

Revision The provisions of AF-540 and Code Case 2220 for qualification of welding procedures for attachment of applied linings were incorporated into QW-218 of Section IX in the '97Addenda. [W95-54] . These revisions remove the now redundant requirements from Section VIII, Divisions 2 with the deletion of AF-521,AF-522, and AF-541.

612AF-612, AF-641, AF-642 Revision These revisions incorporate the provisions of Code Case 2214. A breakdown of the changes are:1. AF-612(c)(1) - SFA-5.11 ENiCrFe-3, SFA-511 ENiCrFe-2, and SFA-5.14 ERNiCrFe-6 added to the list of filler metals that must be used when exempting certain base materials from production impact tests of the weld metal.2. AF-612(d)(2) - clarifiation of the interpass and preheat temperature limits when treated as essential variables.3. AF-612(d)(6)(b) - the requirement that electrodes be purchased or conditioned so as tohave a coating moisture content not greater than 0.2% by weight now applies to all electrodes used for shielded metal arc welding.4. AF-641, AF-642 - The rules for heat treatment certification tests have been clarified.

501AI-501(d) Revision Recent changes in ASME Section V make all paragraphs in Article 2 mandatory. These changes have the effect of requiring written procedures for radiographic examinations for ASME Div. 1 and Div. 2 work. This is not presently a requirement. The proposed changes to Div. 1 and Div. 2 have the effect of maintaining the present requirements by permitting radiographic examination without written procedures. Clarifying information is also included to provide a means for demonstrating compliance with ASME V, Article 2 image density and penetrameter requirements.

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KSubpart/Table: Mandatory Appendices




26Appendix 26, 26-400 Revision This revision corrects an error when the Code Cases 1960-4, 1961-1 and 2098-2 were first incorporated into Section VIII-2 to create Appendix 26. Revision clarifies the last sentence to 26-4(a) by stating that the limitation of SAW and SMAW processes is for the welding of 3CR-1Mo-1/4V-Ti-B material only.

0Code Case 2211-1 Revision Paragraph (a) of the case was revised to remove the restriction on application to vessels in water, air, or steam servcie if these services are critical to preventing the release of fluids that may result in safety or environmental hazards.

MSubpart/Table: Code Cases




0Table KG-141 Revision Revision adds ASNT CP-189 "Standard for Qualification and Certification of Nondestructive Testing Personnel" as an alternative method for certifying NDE examiners.

311.11KG-311.11 Revision Revision places the responsibility for documentation of overpressure protection information used to justify the size, location, connection details, and flow capacity solelyin the User Design Specification.

0Table KCS-1 Addition SA-105 added to allowable material table.

211.2KM-211.2(d)(2) Revision Intent of paragraph KM-211.2(d)(2) revised to produce similar heat treatment of the seperately forged piece so that it does not see cooling rates any faster than actual forging and thus represents mechanical properties of the actual production forging. The requirement that the test piece be shall be heat treated in the same furnace charge was removed.

220KD-220, KD-230, KD-240 Revision Revision to the first paragraph of KD-220 indicates when it is not permitted to use the linear elastic analysis method. Footnote added to KD-230. Previous KD-240 has been deleted and KD-241 renumbered.

612KD-612, KD-613 Revision The sentence requiring that thread load distribution must be considered was deleted.

620KD-620 Revision Revision clarifies the present wording of the 2nd sentence of paragraph KD-620(c) to require that bolt pre-load stress be included in the primary plus secondary membrane plus bending stress intensity limit of Sy. Last sentence of the paragraph also revised to clarify that only stress intensification effects due to threads are exempted from the Sy limit.

621KD-621 Revision Requirements for a minimum of 1.5 diameters of thread length on studs revised. It is believed that if analysis using the least favorable combination of tolerances at assembly verifies proper thread engagement per KD-615, and additional analyses verify acceptable levels of thread shear stress (KD-612), thread bearing stress (KD-613), thread relative radial displacement (KD-614) and fatigue life of both the male and female threaded components of the joint (KD-616), relief from the requirement in KD-621 for 1.5 diameters of thread length on studs is justified.

810KD-810(a) Revision The requirements in KD-810(a) are applicable only to shrink-fit layered vessels. Article KD-8 also provides rules for concentrically wrapped welded layered vessels and the requirements in KD-810(a) do not apply to these types of vessels

850KD-850 Revision Includes a statement that the designer must consider local loadings from supports and revise wording in Figure KD-850 for consistency. Figure KD-850, sketches (a) and (c) editorially corrected.


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922KD-922 Revision Wording of paragraph KD-922 is unnecessarily restrictive because the maximum temperature and maximum pressure are seldom coincident in the types of vessel which would be built to Division 3, Article KD-9. The proposed wording clarifies this problem without losing the basic intent of not allowing the primary plus secondary stress intensity to exceed Sy at any time.

402KF-402 and KF-630 Revision P-Nos. 42 - 45 added to Table KF-402.1. Similar metallurgical characteristics to P-No. 8 materials. P-No. 10A in KF-402.1 revised. Note (2) in Table KF-630 neither prohibits nor requires PWHT for SA-508 forgings. This corresponds to requirements in Section VIII, Div. 2.

910KF-910, KF-911 Revision Revision to KF-910 and KF-911 clarifies the welding requirements for wire wound vessels.

100KR-100 Revision Revision places the responsibility for documentation of overpressure protection information used to justify the size, location, connection details, and flow capacity solelyin the User Design Specification.

532KR-532 Revision KR-532 revised to address not only valve geometry, but also additional issues that are pertinent to Division 3. Some of these issues include gases at pressure above the limits given in KR-532, and liquid service where fluid properties may be influenced by conditions close to the critical point. Figure KR-532.1 deleted. It was used for saturated water up to 3000 psi and does not apply to the pressure range covered by Division 3.

112.1KE-112.1 Revision Revision adds ASNT CP-189 "Standard for Qualification and Certification of Nondestructive Testing Personnel" as an alternative method for certifying NDE examiners. ASNT CP-189 is a standard that provides for verifying the knowledge and skills of an NDE examiner in a fashion that is more demanding than SNT-TC-1A. Some ASME Manufacturers must comply with this standard for the type(s) of production they undertake due to market considerations.

112.2KE-112.2, KE-115 Revision ASNT SNT-TC-1A reference removed for consistency.

322KE-322 Revision KE-322 revised to clarify the intent of the Code and provide some guidance regarding when it is acceptable to use radiography when ultrasonic examination is inconclusive.

0Figure KS-132 Revision Revision to Fig. KS-132 clarifies the relationship between design pressure and coincident design metal temperature

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153QW-153(d) Revision Section IX has adopted the term "weld interface" in place of "fusion line" to conform with AWS A3.0 Definitions. A previous action made this change in the text of Section IXbut one location was missed. This action corrects that oversight.

153.1QW/QB-153.1 and QW/QB-153.1.1

Revision This editorial revision to QW-153.1 and QB-153.1 provides identical wording for the tensile test acceptance criteria for both welding and brazing procedure qualification. As a companion action, QW-153.1.1 and QB-153.1.1 were revised to delete explanatory statements regarding copper and aluminum alloys that are now covered in QW-153.1 and QB-153.1 by a statement indicating that acceptance criteria for the qualification test is based on minimum values.

202.2QW-202.2 Revision QW-202.2(d) was deleted and QW-202.2 (c) was revised. Paragraph QW-202.2 (d) previously required both a groove weld and a fillet weld test to qualify fillet welds for P-No. 11 materials (except for P11A, Groups 1 and 2). Typically P-No. 11 materials are high strength, highly hardenable materials with tensile strengths on the order of 100 ksi. The Code appeared to be inconsistent in that there are numerous other materials of similar strength and hardenability that do not require special additional qualifications for fillet welds.

202.4QW-202.4 Revision For qualification of a dissimilar base metal thickness weld joint of selected base metals, paragraph QW202.4(b)(1) allows a minimum 1/4 inch thick test coupon to qualify a production member of unlimited thickness, when "notch toughness is not a requirement."In cases where these specified base metals are to be used and notch toughness is a requirement, one could conclude that the requirements of QW202.4(b)(2) would apply, requiring a minimum test coupon thickness of 1-1/2 inches to qualify a production member of unlimited thickness (in a dissimilar thickness weld joint). The qualifier "in which notch toughness is not a requirement" has been removed from QW-202.4(b)(1).

253QW-253 Revision Except for the SMAW process, all of the conventional arc welding processes make a change from "multi-pass per side" to "single-pass per side" (QW-410.9) both a supplementary essential and nonessential variable . The revision corrects this by the inclusion of QW-410.09 as a supplemental essential and nonessential variable in Table QW-253 Welding Variables Procedure Specifications (WPS) for the SMAW Process.

256QW-256 Revision Fluxes have recently been developed that, when added to the faces of a groove weld prep,dramatically increase weld penetration without affecting the mechanical or chemical properties of the GTAW deposit. The Section IX Subcommittee felt that the use of such fluxes should be identified on the WPS as a non-essential variable (no affect on properties) for the information of the welder/welding operator. This revision requires the user to record the addition or deletion of preparation flux when used with the GTAW process.

9Code Book: IXPart:

CSubpart/Table: Article I


DSubpart/Table: Article II




283.4QW-283.4 Revision When a material that is buttered by one organization and at a later time the buttered material is welded to another material by a second organization, QW-283.4 permits the second organization to qualify their PQR by substituting any base metal which has an assigned P-number and a chemical analysis nominally matching the chemical analysis of the buttering weld metal for the buttered base metal of the procedure qualification test coupon. This substitution is only permitted when the original buttering thickness qualification is 3/16 in. or greater. The revision extends this exemption to allow a single organization to take advantage of substituting a material with an assigned P-number and nominally matching chemical analysis of the buttering material and its use for PQR qualification.

300.3QW-300.3 Revision Revision to the fifth paragaraph of QW-300.3 was to accomodate the new forms QW-484A & B. The revision splits the previous single QW-484 non-mandatory format for welder/welding operator performance qualification into two new forms; one for welder qualifications [QW-484 Format A] and one for welding operator qualifications [QW-484 Format B (WOPQ)]. This will provide additional space for recording performance qualification variables for welders and welding operator qualification to be addressed.

301.4QW-301.4 Revision Revision to the last sentence of QW-301.4 was to accomodate the new forms QW-484A & B. The revision splits the previous single QW-484 non-mandatory format for welder/welding operator performance qualification into two new forms; one for welder qualifications [QW-484 Format A] and one for welding operator qualifications [QW-484 Format B (WOPQ)]. This will provide additional space for recording performance qualification variables for welders and welding operator qualification to be addressed.

381QW-381 and QW-382 Revision Paragraphs QW-381 and QW-382 establish the rules for welder and welding operator performance qualifications for corrosion resistant and hard-facing overlay qualifications. Requalification requirements due to changes in pipe diameter and position for welders and changes in position for machine welding operators are arrived at indirectly by reference to QW-350 and QW-360. Since these paragraphs deal with the requirements forgroove welding, it is only by reference that the requirements of these paragraphs are applied to corrosion resistant and hard-facing overlay qualifications. This situation is now corrected by explicitly stating the rules regarding changes in pipe diameter and position on weld performance qualifications in the corrosion resistant and hard-facing overlay qualification paragraphs, QW-381 and QW-382.

404.5QW-404.50 Revision Fluxes have recently been developed that, when added to the faces of a groove weld prep,dramatically increase weld penetration without affecting the mechanical or chemical properties of the GTAW deposit. The Section IX Subcommittee felt that the use of such fluxes should be identified on the WPS as a non-essential variable (no affect on properties) for the information of the welder/welding operator. This revision requires the user to record the addition or deletion of preparation flux when used with the GTAW process.

408.2QW-408.2 Addition This AWS specification for welding shielding gases specifies minimum requirements for the composition and purity of the most popular single and multiple-component shieldinggases. The addition provides a way to simplify the specifiction of shielding gas compostions used in welding procedures.

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FSubpart/Table: Article IV




408.9QW-408.9 and QW-408.10 Revision QW-408.9 & QW-408.10 deal with backing and trailing gases respectively. There is an inconsistency between these two variables. Both make the deletion of backing (trailing) gas a requirement for requalification. However, in QW-408.9 a change from an inert gas toa mixture including non-inert gas(es) requires requalification, while in QW-408.10 ANY change in the trailing gas composition requires requalification. This revision makes QW-408.10 consistent with QW-408.9 in that a change from an inert gas to a mixture including non-inert gas(es) requires requalification for titanium-base alloys (P-No. 51 through P-No. 57), zirconium-base alloys (P-No. 61 through P-No. 62) and superferritic stainless steels (P-No. 10I). Additionally, in QW-408.9 several editorial changes have been made for further consistency with QW-408.10. The first is to list P-No.10I, P-No. 10J and P-No. 10K before the P-No. 40's, P-No. 50's and P-No. 60's materials. The second, "gas" is inserted after "inert".

422QW/QB-422 Revision The revisions reflect S-Number changes that ASTM have made to A573, A575, and A576.

QW/QB-422 Addition SA-841 was deleted from QW/QB-422 because Subcommittee IX never took action to have it included in QW/QB-422. SA-841 was only intended for inclusion in a Code Case with a requirement for separate welding procedure and performance qualifications.

492QW-492 Revision The revision to QW-492 provides updated definitions to the words "oscillation" and "weave bead." Subcommittee IX chose to define word "oscillation" as a programmed machine motion, and "weave" as a technique used by welders. The purpose of this change is to clarify that a weld qualification developed with machine or automatic gas tungsten arc hardfacing in which oscillation is an essential variable may be used to support a manual or semi-automatic gas tungsten arc hardfacing procedure with or without weaving (weaving is not a hardfacing variable). Since oscillation is an alternating motion of the weld arc relative to the direction of travel, it could be construed that oscillation applies to all modes of arc welding - manual, semi-automatic, machine and automatic. However, it has been long understood in the industry that oscillation refers to a mechanical motion and weaving refers to a non-mechanical (e.g., manual) motion.

402.1QB-402.1 & QB-402.2 Revision The Code did not clearly explain the qualification requirement concerning brazing between base metals (similar or dissimilar). This revision will clarifies the brazing qualification requirement with regard to this variable. Editorial revision was also made to QB-402.1.

406.1QB-406.1 Revision The revision allows the user to specify brazing flux by reference to its AWS classification in the SFA-5.31 specification. As previously permitted nominal chemical composition (or Manufacturer’s trade name) of the brazing flux may also be used

451.3QB-451.3 Addition For braze lap joints, the minimum lap length for procedure qualification is required to be tested with both tension and peel tests. For performance qualification, an increase of more than 25% in the lap length is required to be tested with the peel test. These different requirements in (peel test) lap length make it difficult to use a single test couponfor both procedure qualification and performance qualification testing. To remedy a change was made to allow the overlap length for the peel test used for a braze procedure qualification (BPQ) to be equal to or greater than that used for the tension test (i.e., the minimum value). For procedure qualification testing, a longer lap length for the peel test represents a more conservative situation. This change thus allows a single BPQ test coupon to provide sufficient flexibility for both procedure and performance qualification testing of braze lap joints.

JSubpart/Table: Article XIV




463.2QB-463.2(c) Revision The previous wording and sketch in QB-463(c) required that a small, individual strip specimen be cut from each of 2 test coupons, polished and examined when the coupon is greater than 1 inch OD and smaller than 3 inches OD. For the commonly used 1-1/2 inch diameter performance qualification test coupon, polishing the individual strips represented a considerable effort compared to that of polishing a half-tube section to examine the same section of brazed joint. This change allows the user the option of polishing a half-tube section rather than a difficult-to-handle strip specimen. Another aspect of this change requires that the user remove the individual specimens from location No. 1, which is the most difficult location in a socket brazed joint to get good fillin the gap.

0Form QW-484 Revision The revision splits the previous single QW-484 non-mandatory format for welder/welding operator performance qualification into two new forms; one for welder qualifications [QW-484 Format A] and one for welding operator qualifications [QW-484 Format B (WOPQ)]. This will provide additional space for recording performance qualification variables for welders and welding operator qualification to be addressed.

2141Case 2141 Revision This Code Case was annulled when A5.17-97 and A5.23-97 were adopted into Section II, Part C. These versions of the two AWS submerged arc (SAW) filler metal specifications reinstated the qualification of wire/flux combinations with alternating current. (The use of alternating current for filler metal qualification testing had been deleted in the A5.17-89 and A5.23-90 publications). A Certificate Holder with remaining submerged arc filler metal procured to the A5.17-89 and A5.23-90 filler metal specifications had requested that this Code Case be reinstated so that existing inventory that had been qualified to the earlier version of SFA5.17 and SFA-5.23 using alternating current could continue to be used.

2336Case 2336 Addition This action assigns F-Number 52 to UNS R52255 Ti-Ru welding filler metal for welding procedure and performance qualification. Ti-Ru (Grade 26 and 27) and Ti-Pd (Grade 7 and 11) are identical except for the substitution of a small amount of ruthenium for palladium as the corrosion enhancing addition. Ti-Ru (Grade 26 and 27) can be welded with SFA 5.16-90 ERTi-7 (Ti-Pd) or with UNS R52255 (Ti-Ru) composition filler metal. Note that the filler metal chemistry optimized for this material is slightly more restrictive in iron and ruthenium than ERTi-7, but otherwise identical. Low iron is normalindustry practice in all corrosion resistance titanium grades today, so there is little real difference in the iron content in ERTi-7 and UNS R52255.

2337Cases 2337 and 2338 Addition Cases allow for the F-Number Grouping for Ni-23Cr-16Mo-1.6Cu filler metals and electrodes to be considered as F-No.44 for both weld procedure and performance qualification purposes.

2340Cases 2340 and 2341 Addition Cases allow for the consideration of Ni-28Mo-1Cr bare wire and covered electrodes conforming to AWS A5.14 and A5.17, respectively to be considered as an F-No. 44 fillermetal for procedure and performance qualifications.

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130RM-130, RM-131 and RM-132

Revision Calculations have shown that for filament wound vessels, a minimum tensile strength specification relative to the tank axis was of little merit. This is because of the strong dependence of bulk stress on the wind angle, fiber volume, number of wind passes, and other parameters. It was determined that the entire section could be eliminated due to the opinion that a Class I vessel is proven capable of meeting Code requirements by the destructive test of a prototype.

312RD-312(a) Errata Requirement changed to subject a prototype vessel to an external pressure of the GREATER of twice MEDP or 29 inches of Hg. Previously it was the smaller of the two.

2266Case 2266 Revision Code Case 2266 was reviewed as to whether the Subcommittee should continue the Case and approve its reaffirmation. It was reported that the criteria now appears in RT-620(b)of Section X, and the Case will be allowed to expire.

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2323IWA-2323 Addition Provides alternative rules to IWA-2323 to enable Code users to retain their current Level III Basic and Method examination formats (i.e., those conforming with the 1984 Edition of SNT-TC-1A) when adopting Editions and Addenda of ASME Section XI referencing CP-189.

2443IWA-2443 Revision It was intended to incorporate Code Case N-555 into Section XI, paragraph IWA-2443. Due to the overwhelming negative votes it was agreed to delete IWA-2443.

3300IWA-3300(b) Revision Recent improvements to NDE methods have led to extensive use of the flaw proximity rules of IWA 3300(b). Several questions have arisen regarding the flaw characterization rules, and it was determined that the order of the procedures was not specified.

4132IWA-4132 Revision Wording in IWA-4132 paragraph (e) required that a pressure test be performed for installing pressure relief valves that had been previously installed in the plant. Revision eliminates the requirement to pressure test rotated pressure relief valves. With the IWA-4540 deletion of pressure tests for mechanical connections, IWA-4132 need not be more restrictive than current Code requirements. IWA-4132 restricts the use of pressure relief valves that have only been removed for periodic testing, are installed by mechanical means and have not had any repair/replacement activities performed on them.

4400IWA-4400 Revision (1) Current IWA-4400 rules are disorganized. In some cases, several paragraphs refer to asingle, central requirement. In others, similar (or identical) requirements are restated numerous times. Exceptions are listed in locations remote from the paragraphs to which they apply, requiring broad familiarity with the Code to enable accurate application Where a single requirement applies to several subarticles, that paragraph has been moved to a single location, and other paragraphs now reference that single paragraph. Paragraph renumbering achieves logical flow, minimizes redundancy, and improves usability (IWA-4411, 4412, 4413, 4422, 4430, 4611). (2) Defect removal may be accomplished in several ways, i.e., by grinding, by thermal metal removal, by welding/brazing, or by modification. Activities such as these, however,are not always associated with defect removal. Current Code rules are unclear regarding repair requirements for defect vs. non-defect applications.

4713IWA-4713 Addition New subparagraph, IWA-4713, provides the requirements for: (1) Supplying the plugs to the Construction Code requirements in IWA-4200.(2) Development of a Plug Procedure Specification (PPS) with a detailed list of what must be included in the PPS. (3) Testing to qualify the plug design and the PPS (i.e., cyclic testing, proof-testing). (4) Re-qualification when essential variables of the PPS change. (5) Performance qualification for individuals who install the tube plugs. (6) Records retention.

5240IWA-5240 Revision This action is a complete re-write of IWA-5240, "VISUAL EXAMINATION." The revised paragraph more clearly describes the areas to be examined during the conduct of a VT-2 visual examination conducted during a pressure test. It also incorporates the alternative requirements of Code Case N-533 concerning the removal of insulation for visual examination of bolted connections during the pressure test.

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6320IWA-6320 Revision Change recognizes the current use and expected expansion in the practice of originating, re-creating, and storing electronic (i.e. digital) images of record copies of quality assurancerecords and reports—both text and graphics. As background, IWA-6310, “Maintenance of Records”, states: “The Owner shall retain records and reports identified in IWA-6330 and IWA-6340 as a minimum.” It further states: “The Owner shall provide suitable protection from deterioration and damage for all records and reports, in accordance with the Owner’s Quality Assurance Program, for the service lifetime of the component or system.”

9000IWA-9000 Revision Clarifies that Owner’s Requirements are not limited to technical conditions only and can include administrative conditions as well.

0Figures IWB-2500-1, IWB-2500-2, IWB-2500-3, and IWB-2500-6.

Revision The illustrated "scan area as required to examine vol. w-x-y-z" on the figure is misleading.All the figures depict the "scan area" to be on the outside surface. Most all RPV examinations are scanned on the inside surface.

Table IWB-2500-1 Addition Allows the use of ultrasonic examination as a surface examination method for Category B-F and B-J piping welds when the ultrasonic examination is performed from the inside surface. ASME Section XI, Table IWB-2500-1 requires that a surface and volumetric examination be performed for Category B-F and B-J piping welds.Reactor coolant loop nozzle-to-safe end welds, safe-end-to-pipe welds and nozzle to pipe welds are included in these Categories. The volumetric examination of these welds isoften performed from the inside surface. In those instances, the ultrasonic examinations are capable of detecting surface flaws on the outside surface. Therefore, instead of removing shielding, removing insulation, performing surface preparation and performing surface examinations of the outside surface, the ultrasonic examination can be substituted for the required surface examination.

0Table IWD-2500-1 Revision Incorporation of Code Case N-498-1 into Table IWD-2500-1. Table IWD Categories D-A, D-B and D-C were merged appropriately in the 1997 Addendum, the requirement to perform a hydrostatic test at the end of each interval was not removed.

2410III-2410 Revision Reinstate the option of 50% transducer overlap, as contained in the 1998 Edition, in lieu of oscillating the transducer plus or minus 20 degrees during scanning.

0Case N-432 Revision Reduced the required layers for temper bead welding from six to three and remove the 48 hour hold before performing acceptance nondestructive examination..

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0...Case N-416-1 Revision Code Case requirements are revised to incorporate and clearly allow pressure testing of parts to be covered.

Case N-649 Addition Provides alternative examination requirements for repair and replacements on metal containments. In lieu of the VT-2 or detailed visual requirement on repair/replacement activities affecting the pressure boundary, if a pressure test (Type A, Type B, or Type C) is performed to verify the leak tight integrity of the affected pressure boundary, a VT-3 or general visual examination of the accessible areas shall be performed. For any repair/replacement activity wherein the pressure test to verify leak tight integrity is not performed or deferred, a VT-1 or detailed visual examination shall be performed.

Case N-513 Revision Code Case N-513 permits flaws in Class 3 piping on a temporary basis until the next outage if it can be demonstrated that adequate pipe integrity and leakage containment are maintained.

Case N-532 Revision Current Case N-532 invokes an existing requirement of Section XI, it refers the user to the Articles/paragraphs based on a specific Edition/Addenda of Section XI, namely the 1992 Edition. However, because the structures of Articles IWA-4000 and IWA-7000 (IWA-7000 was combined with IWA-4000 in the 1991 Addenda) have changed significantly over the past 10 years, it is difficult for the user to determine the proper paragraph reference when using a Code Edition/Addenda of Section XI

Case N-553 Revision Section XI, Division 1, was revised in the 1995 Edition, 1997 Addenda to allow the use of eddy current as a surface examination. In some instances it can provide significant costand dose savings. Revision provides a vehicle for Owners to use eddy current as a surfaceexamination before they update to the 1995 Edition, 1997 Addenda or later Edition and Addenda .

Various Cases Revision Reaffirmation of Code Cases N-435-1, N-517-1, N-523-1, N-537, N-588, N-592, N-598,N-601, N-603, N-605, N-561-1, N-562-1 and N-597 also the annulment of Code Cases N-458-1, N-461.1, N-535, N-541, N-542, N-463-1 and N-544.

Case N-523-1 Revision Revised due to a footnote in Case N-523-1. This footnote stated: "References to Section XI are to the 1992 Edition with the 1993 Addenda." It was thought that this could mean that the Owner would have to meet the 1993 Addenda for each of the requirements in theCase. This is not the case.

Various Cases Revision Reaffirmation of Code Cases N-481 and N-545 and Annulment of Code Cases N-509, N-512-1, N-547 and N198-1

Case N-647 Addition Provide an alternative to visual and ultrasonic thickness measurement examination requirements of IWE-2500. The Case is also applicable to other Editions and Addenda, as noted in the Code Case. 1. IWE-2500(b)(1) requires that “Areas accessible from both sides shall be visually examined using a detailed visual examination method.” This impliesthat both sides of the component, part, or appurtenance are required to be examined, even if only one side is subject to conditions which warrant augmented visual examination in accordance with IWE-1241. If both sides of a component, part, or appurtenance are accessible, a visual examination should be required only on those surfaces subject to conditions which warrant augmented examination.

Case N-648 Addition Nozzle inner radius examinations are required on all Class 1 reactor vessels and are the only non-weld location which requires inspection, on the entire pressure boundary. Casewill replace the volumetric inspection requirement for all reactor vessel nozzles, except the BWR feedwater nozzles and the active control rod drive return nozzles, with a VT-1 examination.