ML20005G741

Summary of 900108 Meeting W/Util & Bg&E in Rockville,Md Re Licensee Plan for Repair of Leaks in Unit 2 Pressurizer Heater Penetrations

ML20005G741
Person / Time
Site:	Calvert Cliffs
Issue date:	01/16/1990
From:	Labarge D Office of Nuclear Reactor Regulation
To:	Office of Nuclear Reactor Regulation
References
NUDOCS 9001230015
Download: ML20005G741 (22)

Text

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PDI-1 Rdg EJordan NRC/ Local PDRs ACRS(10) [ JSniezek JDyer LICENSEE: Baltimore Gas and Electric Company (BG&E) RCapra JLinville i DLaBarge -FACILITY: Calvert Cliffs 1/2 ' CVogan HBClayton

SUMMARY

OF MEETING HELD ON JANUARY 8, 1990 - r, PRESSURRIZER REPAIR PLAN The meeting was held at the One White Flint North Office in Rockville, Maryland..A list of attendees is attached as Enclosure 1. Some_ of the reference material supplied by the licensee was proprietary. is the non-proprietary portion of this reference material. All topics outlined on the AGENDA page were addressed during the meeting. The purpose of'the meeting.was_to discuss various. aspects of the licensee's plan for repair of the leaks in the Unit 2 pressurizer heater penetrations. Normally meetings between the NRC technical staff and licensees are open to ithe public,' petitioners, intervenors, or other parties to attend as observers. However, since Babcock and Wilcox-(B&W) Company submitted some of the information which was discussed as trade secret information, and the NRC has E approved the withholding of this information from the public in accordance with 10_CFR 2.790, the meeting was closed to the public. No committment to supply addition information resulted from the meeting. Original signed by David E. LaBarge, Project Manager Project Directorate I-1 Division of Reactor Projects - 1/II Office of Nuclear Reactor Regulation

Enclosures:

1. List of Attendees 2. Reference Material cc: See next page t I.;FC

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~ ~~ ~ q: ~ ,} ^ ' j#*p, q'o,,. DNITED STATES - 1 lg NUCLEAR REGULATORY COMMISSION - 3 5 E R (- WASHINGTON, D. C. 20555 %(,,, # January.16, 1990 1 Docket No. 50-318: J l t .c ' LICENSEE: Baltimore' Gas and Electric Company (BG&E)

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Calvert Cliffs;1/2

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SUMMARY

OF MEETING HELD ON JANUARY 8, 1990 - PRESSURIZER REPAIR PLAN j The meeting'was held:at!the One White Flint North Office in Rockville, Maryland.= A list of, attendees is attached as Enclosure 1. Some.of-the= reference material supplied by the licensee was proprietary. ' is the non-proprietary portion of this reference material. 1 All, topics outlined onithe AGENDA page were addressed during the meeting. 9 '.The: purpose of the meeting was to discuss various aspects of the licensee's plan for. repair of the leaks in the' Unit 2 pressurizer heater penetrations. Normally meetings between the NRC technical staff and licensees are open to. .the public, petitioners,'intervenors, or other parties to attend as observers.. However, since Babcock and Wilcox (B&W) Company submitted some of 1the information which was discussed as trade secret information, and the NRC has approved the withholding of this.information from the.public in accordance i with 10 CFR 2.790, the meeting was closed to the public. .No commitment to supply additional information resulted from the meeting.- 7 David E. LaBarge, Project Manager Project Directorate I-1 Division of Reactor Projects - I/II i Office of Nuclear Reactor Regulation

Enclosures:

l l 1. List of Attendees 2. Reference Material cc: See next page =

Mr. G. C. Creel Baltimore Gas & Electric Company Calvert Cliffs Nuclear Power Plant CC- t y. Mr. William'T.-Bowen, President Mr. Joseph H. Walter ~ Calvert: County: Board of Engineering Division Commissioners Public' Service Commission of Maryland Prince Frederick, Maryland _ 20678 American Building 231 E. Baltimore Street Baltimore, Maryland 21202-3486 'D. A..Brune. Esq. General Counsel Baltimore Gas'and Electric Company Ms. Kirsten A. Burger, Esq. P. 0.' Box 147f Maryland People's Counsel Baltimore, Maryland-_ T1203 American Building, 9th Floor 231 E. Baltimore Street Mr. Jay E. Silb' erg, Esq. Baltimore, Maryland 21202 -Shaw, Pittman, Potts and Trowbridge-2300,N Street.NW Ms. Patricia Birnie Washington, DC. ?0037 Co-Director a Maryland Safe Energy Coalition - Mr. W. J. Lippold. General. Supervisor P. O. Box 90? Technical Services Engineering Columbia, Maryland 21044 Calvert Cliffs Nuclear Power Plant

MD Rts 2 f. 4, P. O. Box 1535 Lusby, Maryland 20657 Resident' Inspector

' c/o U.S. Nuclear Regulatory Commissien u- .P. O. Box 437 lusby, Maryland 20657 Mr.' Thomas Magette Administrator - Nuclear Evaluations Department of Natural Resources 580 Taylor Avenue -Tawes State Office Building PPER P3 Annacolis, Maryland '21401 I Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, Pennsylvania 19406

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ENCLOSURE 1 +. . LIST OF ATTENDEES g . PARTICIPANTS ORGANIZATION R. Capra NRC D. Mcdonald NRC' R. Hermann. NRC J.:Ramsey NRC ' W. Koo:. NRC C. Sellers- 'NRC H. Kaplan NRC a, . M. Hum .NRC D. LaBarge NRC J.'Norris NRC B. Rudell BG&E-R. Pond BG&E s J. Osborne BG&E R.'Cantrell BG&E-J. Taylor BG&E - D.:Graf-BG&E C. Carr-B&W C. Thomas -B&W J. Shepard B&W J.:Houstrup Structural Consultant to BG&E- ---_m_______.__.m_~~.m__.-_.mm____m_..> _._m

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~ E V 2 E T E T L N S E I Y N R MR U E E A o T C F A A M S ~ F E L M 9 H P I E U L C R R S g E T / N R 7 R A 1 E R I L V U A P L P A S E y S g C E R RP ,l a

~ L,.. K, ~ parsner usuran c AGENDA 1. Introduction Don Graf (BG&E) 11. Problem Overview & Original Design Bernie Rudell(BG&E). Ill. New Design Description and Bernie Rudell(BG&E)- Comparison Summary With Original Design IV. Design Evaluation Summary John. Shepard (B&W). V. Suitability (690 vs. Other Materials) Rob Pond (BG&E) VI. General Work Description Bernie' Rudell(BG&E) Vll. Welding & NDE Requirements Roger Cantrell(BG&E) Vill. Summary & Discussion Don Graf (BG&E) O

y a / l~ MEETING'S OBJEC1IVES 3 i i,

l. Inform the NRC j

A. Comply with Specific Requests j by the NRC to be Informed of j the Repair Process and Method i l i i i i i i I I l b I

.- - t ,.,z., MEETING OBJECTIVES II. Obtain Approval for Use of Certain Code Cases, Code Editions, and Materials (Ref. BG&E Letters i Dated 07/13/89 and 10/27/89) j A. For Use of inconel 690 Meeting Specification i SB-166 or 167 in Pressurizer Penetration Replacements With Special Requirements in Code Case N-20-3 and N-474 i i B. For Use of 1986 Edition of ASME Code per I Code Case N-389 C. For Use of N-20-3 D. For Use of N-474 to Permit Use of Inconel 690 Material With a Yield Strength of 35 KSI i i

L PROGRAM OBJECIIVES L a i .l. Repair the Pressurizer a A. Stop Leak i B. Repair Corrosion Suscsplible Material j in Penetrations ~ ll. Meet System Functional Requirements as Well or Better Than Original Design A. Codes i B. Design Life i C. Heater Maintenance L r l A- ,,,,w s.- y .. ee,

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e PROGRAM OBJECIIVES L Ill. Minimize Exposure Levels to as Low as } Reasonably Achievao* le i l A. Maximize Automation B. Decontaminate / Shield I C. Minimize Internal Entry l L l IV. Mock-Up All Evolutions t l A. Pre-Operational Training i 'I B. Review for Safe Practices C. Field Harden Equipment i I ~ .~......,__...~..__...._,.-___..__._____..._________.[..

+ PROJECI ORGANIZATION 1

1. Under Direct Control of Licensee i

A. Project Manager and Qualified Technical l Staff with Full Review / Approval Authority B. POSRC Review / Approval of Procedures 1 l C. Full-Time Production Surveillance for 1 Safe Practices and Procedural Compliance D. Radiation Control j f E. QA Surveillance / Audit i 1

',n i PROJECI ORGANIZ.ATION l Ill. Executed by Experienced Vendor t A. Qualified QA Program I B. Site and Home Office Engineering i C. Qualified Welding and NDE Program i D. Experienced Site Management of Crafts i j i I 4 l [

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SUMMARY

NRC Informed i l - Repair / Replacement F!an Submitted I l by BG&E Letter Dated 11/03/89 - Material and Code Approval Requests Submitted by BG&E by Letters Dated 07/13/89 and 10/27/89 Written Approvals of Materials and Code Aspects are Outstanding 1 4 ..,,,r - - - - - - - - - ^ ~~' ~~

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^ UNIT 2 HEATER SLEEVE NDE FINDINGS e AXIAL CRACKS ON SLEEVE ID l l i ~ j e NO CIRCUMFERENTIAL INDICATIONS l i e EVIDENCE OF HEAVY RE/\\l\\!!NG

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UNIT 2 4 HEATER SLEEVE FAILURE ANALYSIS l e PRIMARY WATER STRESS CORROSION ~ { CRACKING (PWSCC) o PWSCC REQUIRES: 1 il l e 1. SUSCEPTIBLE MATERIAL i i o 2. ENVIRONMENT j e 3. TENSILE STRESS t e COLD WORK / RESIDUAL STRESS FROM i HEAVY REAMING CONTRil!UTED TO INITIATION OF PWSCC.

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