ML20248B983

Rev 7 to Reg Guide 1.147, Inservice Insp Code Case Acceptability ASME Section XI Div 1

ML20248B983
Person / Time
Issue date:	07/31/1989
From:	NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES)
To:
References
REGGD-01.147, REGGD-1.147, NUDOCS 8908090388
Download: ML20248B983 (7)

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Revision 7 U.S. NUCLEAR REGULATORY COMMISSION July 1989

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l REGULATORY OFFICE OF NUCLEAR REGULATORY RESEARCH GUIDE f

REGULATORY GUIDE 1.147 1

l INSERVICE INSPECTION CODE CASE ACCEPTABILITY ASME SECTION XI DIVISION 1 A. INTRODUCTION This regulatory guide lists those Section XI ASME Code Cases that are generally acceptable to the NRC staff for

( Section 50.55a, " Codes and Standards," of 10 CFR implementation in the inservice inspection of light-water-Part 50, " Don estic Licensing of Production and Utilization cooled nuclear power plants.

Facilities," requa,in part, that each operatinglicense for a boiling or pressurized water-cooled nuclear power facility Any information collection activities mentioned in this regu and each construction permit for a utilization facility be latory guide are contained as requirements in 10 CFR Tart 50, subject to the conditions in paragraph (g)," Inservice Inspec- whidi provides the regulatcry basis for this guide. The infortna-l tion Requirements," of g 50.55a. Paragraph (g) requires,in tion collection requirements in 10 GR Part 50 have been I

part, that Classes 1,2, and 3 components and their supports cleared under OMB Clearance No. 3150-0011.

meet the requirements of Section XI, " Rules for Inservice Inspection of Nuclear Power Plant Components,"1 of the B. DISCUSSION American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code or equivalent quality standards. The ASME Boiler and Pressure Vessel Committee pub-Paragraph 50.55a(b), in part, references the latest editions lishes a document entitled " Code Cases."3 Generally, and addenda in effect of Section XI of the Code and any the individual Code Cases that make up this document l

l supplementary requirements to that section of the Code. explain the intent of Code rules or provide for alternative Footnote 6 to 0 50.55a states that the use of spec'.fic Code requirements under special circumstances.

Cases may be authorized by the Commission upon request r"rsuant to paragraph 50.55a(a)(2)(ii), which requires that Most Code Cases are eventually superseded by revision of proposed alternatives to the described requirements or portions the Code and then are enrulled by adion of the ASME. In thereof provide an acceptable level of quality and safety. such instances, the intent of the annulled Code Case becomes part of the revised Gde,and therefore continued use of the General Design Criterion 1, " Quality Standards and Re- Gde Case intent is sanctioned unde';the rules of the Gde. In cords," of Appendix A, " General Design Criteria for Nuclear other instances, the Code Case is annulled because it is no Power Plants," to 10 CFR Part 50 requires, in part, that longer acceptable or there is no further requirement forit. A structures, systems, and components important to safety be Gde Case that was approved for a particular situation and not designed, fabricated, erected, and tested to quality standards for a generic appbcation should be used only for the approved m a commensurate with the importance of the safety function situation because annulment of such a Gde Case could result to be performed. Where generally recognized codes and in situations that would not meet Gde requirements. The

- o standards are used, Criterion 1 requires that they be identi- ASME considers the use of Code Cases to be optional for the C- fied and evaluated to determhje flicir applicability,sidequacy, user and not a mandatory requirement.

Q O and sufficiency and be supplemented or modified as neces-

$ sary to ensure a quality product in keeping with the required safety function.

The Code Cases listed in this guide are limited to those cases applicable to Section XI of the Code.

MO2 All published Ode Oses that are applicable to Section XI OW

, pg 1Copies may be obtained from the American Society of Mechan. of the Code and were in effect on December 8,1987, werele O y ical Enstneers, United Engineering Center, 345 East 47th Street, ID w New York, N.Y. 20017. ' Lines indicate substantive changes from Revision 6.

om .

[ USNRC REoULATORY GUIDES The guides are issued in the following ten broad divisions:

Regulatory Guides are issued to describe and make available to the public methods acceptable to the NRC staff of implementing 1. Power Reactors 6. Products specific parts of the Ccmmission's regulations, to dehneate tech. 2. Research and Test Reactors 7. Transportation moues used by the staff in evaluatmo specific problems or postu. 3. Fuels and Materials Facshties 8. Occupational Health lated accidents, or to provice guidance to apphcants. Regulatory 4. Environmental and Satmg 9. Antitrust and F mancial Review Gusdes are not substitutes f or regulations, and comphance with S. Materials and plant Protection 10. General tnem is not reautred. Methods and solutions different f rom those set out in the gulden will be acceptable if they provide a basis for the fmdings reouisite to the issuance or continuance of a permit or Copies of issued guides may be purchased from the Government license by the Commission. Printmg Office at the current GPO price. Information on current GPO prices may be obta;ned by contactmg the Superintendent of This guide was issued af ter consideration of comments received from Documents, U. S. Government Printing O f fice, Post of fice Box the puDuc. Comments and suggestions for improvements in these 3 7002. Washmgton, DC 20013 7082, telephone (202)275-2060 or guides are encouraged at all times, and guides wHi t>e revised. as (202)275-2171.

appropriate, to accommodate comments and to reflect new informa-tion or experience.

Written comments may be submitted to the Regulatory Pubhcations inf ormation service on a stanamg order basis. Details on thes Branch, DF I PS, ARM. U.S. Nuclear Regulatory Commession, service may be otsta6ned by writmg NTIS. 5285 Port Royal Hoad.

Washington, DC 20S55, sprmgfield, V A 22161.

reviewed for inclusion in this guide. Code Cases that are not specified in the Code Case. The last sentence of the listed herein are either not endorsed or willrequire supple- " Reply" should be replaced with the following: The mentary provisions on an individual plant basis to attain provisions of this Code Case may not be applied for endorsement status. the examination of clad surfaces of nozzles, including the inner surface of the nozzle-to-vesselinsert welds.

The endonement of a Code Case by this guide constitutes acceptance of its technical position for applications not N-2114 7/13/81 Recalibratian of Ultrasonic Equip-precluded by regulatory or other requirements or by the 7/13/84 inent Upon Change of Personnel, recommendations in this or other regulatory gui.les. Con- 5/7/87 Section XI, Division 1 l

tingent endorsement if applicable is indicated in regulatory position 1 for specific cases. Ilowever, it is the responsibi'- N-216 3/10/78 Alternative Rules for Reactor ity of the user to make certain that no regulator; requirements 7/13/81 Vessel Gosure Stud Examina-are violated and that there are no conflicts with other recom- 7/13/84 tion,Section XI, Division 1 mended limitations resulting from Code Case usage. 5/7/87 l Acceptance or endonement by the NRC staff applies N 234 1/8/79 Time retween Ultrasonic Calibra-

.nly to those Code Cases or Code Case revisions with the 1/21/82 tion Checks,Section XI, Divi-

/date of ASME approval as shown in the regulatory 12/5/84 sion 1 po ition of this guide. Earlier or later revisions of a Code Case are not endorsed by this guide. New Code Cases will N-235 1/8/79 Ultraonic Calibration Checks per require evaluation by the NRC staff to determine if they 4/2/82 Section V, Section XI, Division 1 qualify for inclusion in the approved list. Because of the 2/14/85 continuing change in the status of Code Cases,it is planned that this guide will require periodic updating to accom- N-236-1 9/5/85 Repair and Replacement of Cass modate new Code Cases and any revision of existing Code MC Vessels,Section XI, Division 1 Cases.

Code Case N-236-1 is acceptatle subject to the follow-C. REGULATORY POSITION ing conditions in addition to those conditions specified in the Code Case:

1. The Section XI ASME Code Cases 2 listed below (by number, date of ASME approval,3 and title) are accept- a. In paragraph 1.0(a), second sentence - the phrase, able to the NRC staff for application in the inservice "while the plant is not in service," refers to a inspection of components and their supports for water- refueling outage, cooled nuclear power plants. Their use is acceptable within the limitations 9ated in the " Inquiry" and " Reply" sec- b. In paragraph 1.0(a), third sentence - the phrase, tions of each inusvidual Code Case, within the limitations of "the next scheduled plant outage," refers to the such NRC or other requirements as may exist, and within next scheduled refueling outage.

the additional limitations recommended by the NRC staff and given with the individual Code Case in the list. For clarification, Repair and Replacement of Cass MC Vessels means Repair and Replacement of Oass MC 1705-1 3/1/76 Ultrasonic Examination-Calibra- Vessels and Components (systems). Acceptance of N-98 11/20/78 tion Block Tolerances,Section XI this Code Case in no way infers NRC approval to 1/21/82 violate the technicalspecification or any NRC require-12/5/84 ments with regard to breach of containment during repair and replacement procedures while the plant is N 1131 12/13/82 Basic Calibration Block for Ultra- in operation.

2/14 185 sonic Examination of Welds 10 in. to 14 in. Thick,Section XI, Where a numbered Code paragraph is not identified Division 1 by a particular edition of the Code, the Code in effect at the time of the ASME meeting (11/3/78) that 1738 12/22/75 Examination - Acceptance Stand- approved the Code Case should be governing.

N-118 11/20/78 ards for Surface Indications in 1/21/82 Cadding,Section XI N-278 3/17/80 Alternative Ultrasonic Calibratin 1/21/85 3/17/83s Block Configuration I-3131 and Code Case 1738 (N-Il8)is acceptable subject to the 4 The Code Case was annulled on 0/81 (ASME mandato:y following condition in addition to those conditions annulment date). It was reinstated on 13/61. Because there was no change in the Code Case, the NRC considers that the Case was 2A nunarrical listing <d 'he Code Cases appears in the appendix.

sCode Case N-278 was inadvertently allowed to expire because 3When more than one s ate is given, the earlier date is that on of an ASME administrative error on 3/17/83, its mandatory annul-which the Code Case was ap, roved by the ASME, and the 1 ster c' ate ment date. The Code Case without any technical changes was rein.

(or dates) is that on which the Code Case was reaffirmed by the stated on 83. Because <f these circumstances, the Code Case is ASME. considered in effect during that period of time.

1.147-2

5/25/83s T-434.3,Section XI, Division 1 N-356 7/1/386 Certification Period for Level 111 NDE Personnel,Section XI, Divi-2/19/86 sion 1,2 and 3 Code Case N-278 is acceptable subject to the following conditions in addition to those conditions specified in N-375-2 4/5/84 Rules for Ultrasonic Examination the Code Case: When a universal calibration block is of Bolts and Studs,Section XI, used and some or all of the reference holes are larger Division I than the reflector holes at comparable depths recom-mended by Article IV,Section V,1980 edition of the N-339 7/25/83 Alternative Rules for Repairs,

}

ASME Code, a correction factor should be used to 5/14/86 Replacements, or Modifications, adjust the DAC level to compensate for the larger Section XI, Division 1 reflector holes. Also,1f the reactor pressure vessel was previously examined by using a conventional block, a Code Case N-389 is acceptable subject to the follo ving ratio between the DAC curves obtained from the two ccadition in addition to those conditions specifiedin blocks should be noted (for reference)~ with the the Code Case: The applicant should submit for approv-significant indication data. al the appropriate edition and addenda of the Code that f

i is to ir used fx the repair, replacement, or modification N-306 1/15/81 Calibration Block Material Selec- before start of the work.

l l 4/5/84 tion, Appendix 1,1-3121, Sec-

! l 5/7/87 tion XI, Division 1 I N-401 2/20/84 Eddy Current Examination, Sec-N-307-1 12/5/84 Revised Ultrasonic Examination tion XI, Division i Volume for Class 1 Bolting, Table IWB-2500-1, Examination Cate- N-402 2/20/84 Eddy Current Calibration Stan-gory B-G-1, When the Examina- dard Material,Section XI, Divi-l tions Are Conducted from the sion 1 l Center-Drilled Hole,Section XI, 1 Division 1 N-406 4/5/84 Alternative Rules for Replace-

! ment,Section XI, Division i I N-308 9/30/81 Documentation of 'tepain and 9/30/84 Replacements of Componentsin N-408 7/12/84 Alternative Rules for Examina-1 Nuclear Power Plants,Section XI, tion of Class 2 Piping, Sec.

Division 1 tion XI, Division 1 I N-311 5/11/81 Alternative Examination of Out- Code Case N-408is acceptable subject to the following 4/5/84 let Nozzle on Secondary Side of condition in addition to those conditions specified in l 5/7/87 Steam Generators,Section XI, the Code Case: The applicant for an operating license Division I should define the Class 2 piping suMect to volumetric and surface examination in the Preservice Inspection Code Case N-311 is acceptable subject to the following for determination of acceptability by the NRC staff, condition in addition to those conditions specified in the Code Case: The applicant should indicate in the N-409-1 12/7/87 Procedure and Personnel Qualifi-Safety Analysis Report that the stress analysis of the cation Requirements for Ultra-nozzle inside-corner region meets the Code Case sonic Detection and Sizing of stipulations for the state of stress in this region. Flaws in Piping Welds, S r'lon XI, Division 1 N-33 5-1 6/20/85 Rules for Ultrasonic Examina-tion of Similar and Dissimilar Code Case N-409-1 is acceptable subject to the Metal Piping Welds,Section XI, following condition in addition to those conditions Division I specified in the Code Case: The applicant should give prior notification to the NRC of theintention to use N-343 4/2/82 Alternative Scope of Examination the Code Case.

2/14/85 of Attadiment Welds for Examina-tion Categories B-H, B-K-1, and N-415 9/5/85 Alternative Rules for Testing C-C,Section XI, Division 1 Pressure Relief Devices, Sec-tion XI, Division 1 N-355 7/16/82 Calibration Block for Angle 2/14/85 Beam Ultrasonic Examination of Large Fittings in Accordance with Appendix 111-3410, Sec-tion XI, Division I wer nicehab e td N[$N.te that the conditions of the Code Ca 1.147-3

N 416 12/5/85 Alse'r native Rules for liydrostatic N-445 5/7/87 Use of Later Editions of SNT-TC-Testing of Repair or Replace- 1 A for Qualification of Nonde-ment of Class 2 Piping, Section structive Examination Personnel, XI, Division 1 Section XI, Division 1,2, and 3 N-419 7/18/85 Extent of VT-1 ExtJninations, N446 5/7/87 Decertification of Visual Exami-Category B-G-1 of Table IWB- nation Personnel,Section XI, l 2500-1,Section XI, Division 1 Division 1 N 424 7/18/85 Qualification of Visual Examina- N-448 7/27/87 Qualification of VT-2 and VT-3 tion Personnel,Section XI, Divi- Visual Examination Personnel, sion 1 Section XI, Division 1 N 426 7/18/85 Extent of VT-1 Examinations, N-449 7/27/87 Qualification of VT-4 Visual Category B-G-2 of Table IWB- Examination Personnel, Sec-2500-1,Section XI, Division 1 tion XI, Division 1 N-427 12/5/85 Code Cases in Inspection Plans, N-457 12/7/87 Qualification Specimen Notch Section XI, Division 1 Location for Ultrasonic Examina-tion of Bolts and Studs,Section XI, Division 1 Code Case N-427 is acceptable subject to the following condition in addition to those conditions specified in 2. Code Cases that were endorsed by the NRCin a prior the Code Case. The sentence under (b)(1) should be version of this guide and were later annulled by action of the replaced with the following: Code Cases that were ASME should be considered as deleted from the list of superseded with revised Code Cases and had rou approved acceptable Cr de Cases as of the date of the ASME action for use in accordance with (a) may continue to be used, that appro' ed the annulment. Such Code Cases that were annulled

• or Ret November 1,1978, are listed bilow by 2/23/87 Alternative Rules for ~ Ultrasonic number, effective dates,a and title.

l N 429-1 Instrument Calibration, Sec-tion XI, Division 1 1551 11/6/72 Inservice inspection of Welds on N-34 11/20/78 Nuclear Components,Section XI N-432 2/20/86 Repair Welding Using Auto- 11/20/81 matic or Machine Gas Tungsten-Arc Welding (GTAW) Temper- 1646 8/12/74 Partial Postponement of Category ,

bead Technique,Section XI, N-72 11/20/78 B-C Examination for Class 1 Com-Division 1 1/1/81 ponents,Section XI N-435-1 7/30/86 Alternative Examination Require- 1647 8/12/74 Partial Postpmement of Cctegory ments for Vessels with Wall N-73 11/20/78 B-D Examination for Class 1 Thickness 2 in. or less, Section 1/1/81 Components,Section XI XI, Division 1 1730 11/3/75 Acceptance Standards for Class 2 N 436-1 12/7/87 Alternative Methods for Evalua- N-ll2 7/1/79 and 3 Components,Section XI, tion of Flaws in Austenitic Pip- Division 1 ing,Section XI, Division 1 1804 1/14 ? Minimum Section Thickness N-437 7/30/86 Use of Digital Readout and N-167 1/14/b0 Requirements for Repair of Digital Measurement Devices Nozzles,Section XI, Division 1 for Performing Pressure Tests,Section XI, Division 1 N-210 3/20/78 Exemption to Ilydrostatic Tests 3/20/81 After Repairs,Section XI, Divi-N 4447 12/7/87 Preparation of Inspection P1 ns, sion i Section XI, Division 1 Code Case N-210 was acceptable subject to the follow-ing condition in addition to those conditions specified in the Cooe Case. Paragraph (3) of the " Reply" should be replaced with the following: Repairs to piping, pumps, 7Valve stroke times may be documented outside of the IST program. liowever, if included within the IST program and it becomes necessary to revise the maximum stroke time required by 8Earlier date-date Code Case was approved by ASME; later

" Supplement 4 - Content of IWV Valve Test Tables," it is not date-date Code Case was annulled. Where more than two dates necessary to submit a revised IST program to the NRC solely to appear, thelast date is the date that the Code Case was annulled. The document a revision in valve stroke time. middle date (or dates) was the date of reaffirmation of the Code Case.

1.147-4

l' and valves where the depth of the repaired cavity of this Code Case in no way infers NRC approval to does not exceed 25 percent of the wall thickness. violcte the technical specification or any NRC l

requirements with regard to breach of containment

[] ' N-211 Recalibration of Ultrascnic Equip- during repair and replacement procedures while the t.

s j 3/20/78 v ment Upon Change of Personnel, plant is in operation.

3/20/81 Section XI, Division 1 l Where a numbered Code paragraph is not identified N-252 1I/19/19 Low Energy Capacitive Discharge by a particular edition of the Code, the Code in effect 7/16/82 Welding Method for Temporary at the time of the ASME meeting (11/3/78) that or Permanent Attachments to approved the Code Case should be governing.

Components and Supports, Sec-t tion III, Division 1, and XI N-307 1/15/81 Revied Ultrasonic Examination

) 4/5/84 V.,mme for Cass 1 Bolting, Code Case N-252 was acceptable subject to the following 12/5/ad Examination Category B-G-1, f condition in addition to those conditions specified in When the Examinations Are Con-the Code Case: The applicant should indicate in the ducted from the Center-Drilled Safety Analysis Report the application, the material, liole,Section XI, Division 1 and the thickness of the material to which the strain gage or thermocouple will be attached by CD' welding. N-335 4/2/82 Rules for Ultrasonic Examination 2/14/85 of Similar and Dissimilar Metal N-288 8/25/80 liydrostatic Test Requirements 6/20/85 Piping Welds,Section XI, Divi-5/25/83 for Cass 1 and Oass 2 Compo- sion 1 nents,Section XI, Division 1 N-3751o 2/14/83 Rules for Ultrasonic Examination

3. Code Cases that were endorsed by the NRCin a prior 4/14/83 of Bolts and Studs,Section XI, version of this guide and were superseded by revised Code Division 1 Cases on or after November 1,1978, should be considered as not endorsed as of the date of the ASME action that N-375-1 4/14/83 Rules for Ultrasonic Exa'nina-approved the revised version of the Code Cases. These 4/5/84 tion of Bolts and Studs, Sec-Code Cases that are no longer endorsed are listed in the tion XI, Division I following by number, effective dates,9 and title.

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1731 11/3/75 Basic CalibTr tish Block for Ultra-N 409 12/5/84 12/7/87 Procedure and Personnel Qualifi-cation for Ultrasonic Detection N-113 11/20/78 sonic Examination of Welds

~

and Sizing ofintergranular Stress I/21/82 10 in. to 13 in. Thick,Section XI, Corrosion Crackingin Austenitic 12/13/82 Division 1 Piping Welds,Section XI, Divi-sion 1 N-236 1/8/79 Repair and Replacement of Oass 1/21/82 MC Vessels,Section XI, Divi- N-429 12/5/85 Alternative Rules for Ultrasonic l 12/5/84 sion 1 2/23/87 Instrument Calibration, Section 9/5/85 XI, Divicolon 1 Code Case N-236 was axeptable subject to the follow- N 435 5/14/86 Alternative Examination Require-ing conditions in addition to those conditions speci- 7/30/86 ments for Vessels with Wall fled in the Code Case: Thickness 2 in. or Less, Sec-tion XI, Division I

a. In paragraph 1.0(a), second sentence - the phrase, "while the plant is not in service," refers to a N 436 5/14/86 Alternative Methods for Evalua-l refueling outage. 12/7/87 tion of Flaws in Austenitic Pip-ing,Section XI, Division 1

b. In paragraph 1.0(a), third sentence - the phrase, l "the next scheduled plant outage," refers to the 4. Code Cases that are not on the approved list of this j next scheduled refueling outage, guide (paragraph C.1) or other regulatory guides, or for which authorization by the Commission has not been For clarification, Repair ad Replacement of Cass granted, are not acceptable on a generic basis.

MC Vessels means Repair and Replacement of Cass MC Vessels and Components (systems). Acceptance D. IMPLEMENTATION f The purpose of this section is to provide information to

( 'Eartier date-date Code Case was approved by ASME; later applicants regarding the use of this regulatory guide. l

\% date-date revision of Code Case was approved by ASME. Where more j than two dates appear, the last date is the date on which the Code Case was revised. The middle date (or dates) was the date of loCode Case N,37s was not listed prior to Revision 3 of this regu.

reafurrnation or the Code Case. 1 story guide.

I' 1.147-5

1. Except for those Code Cases that have been annulled 3. Code Cases to be applied during an inspection interval by action of the ASME, the NRC staff has found the or Code Cases for a preserviceinspection that were previously Code Cases listed in this regulatory guide under regulatory approved for use need not be changed because the Code position C.1 acceptable for appropriate use. Other Code Case has been subsequently annulled.

Cases may be considered for use in accordance with foot-note 6 of the Codes and Standark rule, p 50.55a of 10 CFR Part 50. 4. Code Cases on the approved list may be applied to procedures for an inspection interval and procedures for the

2. Code Cases to be applied during an inspection interval inservice inspection that were established prior to the or Code Cases for a preservice inspection need not be effective date of the Code Case within the limits specified changed because a subsequent revision of the Code Case is in the Code Case and applicable regulations or recommended listed as the approved version in this guide. In other regulatory guides.

O O

1.147 6

APPENDIX Numerical Listing of Code Cases 1705-1 (N-98) N-406 N-1131 N-408 1738 (N ll8) N409-1l N-211 N415 N-216 N-416 N-234 N419 k N-235 N 424 N 2361 N-426

[ N-278 N427 N-306 N429-1 N-307-1 N432l N-308 N435-1 N-311 N436-1l N-335-1 N-437 N-343 N-444 N-355 N445 N-356 N446 l N-375-2 N-448 N-389 N449 N-401 N-457 N 402 O

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