ML20132E327

Discusses Closeout for Util Response to GL 92-01,rev 1,suppl 1, Reactor Vessel Structural Integrity

ML20132E327
Person / Time
Site:	Limerick
Issue date:	12/09/1996
From:	Rinaldi F NRC (Affiliation Not Assigned)
To:	Hunger G PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
References
GL-92-01, GL-92-1, TAC-M92691, TAC-M92692, NUDOCS 9612230225
Download: ML20132E327 (4)

Text

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4 December 9, 1996 Mr. George A. Hunger, Jr.

Director-Licensing, MC 62A-1 PECO Energy Company Nuclear Group Headquarters Correspondence Control Desk P.O. Box No. 195 Wayne, PA 19087-0195

SUBJECT:

CLOSEOUT FOR PHILADELPHIA ELECTRIC COMPANY (PECO) RESPONSE TO GENERIC LETTER 92-01, REVISION 1, SUPPLEMENT 1. LIMERICK GENERATING STATION (LGS), UNITS 1 AND 2 (TAC NOS. M92691 AND M92692)

Dear Mr. Hunger:

On May 19, 1995, the NRC issued Generic Letter 92-01, Revision 1, Supplement I (GL 92-01, Rev.1, Supp.1), " Reactor Vessel Structural Integrity." In GL 92-01, Rev.1, Supp.1, the NRC requested that nuclear licensees perform a review of their reactor pressure vessel structural integrity assessments in order "to identify, collect, and report any new data pertinent to [the]

analysis of [the] structural integrity of their reactor pressure vessels (RPVs) and to assess the impact of that data on their RPV integrity analyses relative to the requirements of Section 50.60 of Title 10 of the Code of Federal Regulatfons (10 CFR 50.60), 10 CFR 50.61, Appendices G and H to 10 CFR Part 50 (which encompass pressurized thermal shock (PTS) and upper shelf energy (USE) evaluations), and any potential impact on low temperature overpressure (LTOP) limits or pressure-temperature (P-T) limits."

More specifically, in GL 92-01, Rev.1, Supp.1, the NRC requested that addressees provide the following information in their responses:

(1) a description of those actions taken or planned to locate all data relevant to the determination of RPV integrity, or an explanation of why the existing data base is considered complete as previously submitted; (2) an assessment of any change in best-estimate chemistry based on consideration of all relevant data; (3) a determination of the need for the use of the ratio procedure in accordance with the established Position 2.1 of Regulatory Guide (RG) 1.99, Revision 2, for those licensees that use surveillance data to provide a basis for the RPV integrity evaluation; and (4) a written report providing any newly acquired data as specified above and (1) the results of any necessary revisions to the evaluations of RPV integrity in accordance with the requirements of 10 CFR 50.60, 10 CFR 50.61, Appendices G and H to 10 CFR Part 50, and any potential impact on the LTOP and P-T limits in the technical specifications, or (2) a certification that previously submitted evaluations remain valid.

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. G. Hung:r, Jr. ~

Revised evaluations and certifications were to include consideration of Position 2.1 of RG 1.99, Revision 2, as applicable, and any new data. The information in Reporting Item (1) was to be submitted within 90 days of the issuance of the GL. The information in Reporting Items (2) - (4) was to be .

submitted within 6 months of the issuance of the GL. -

The NRC staff has noted that PECO submitted a response to Reporting Item (1) on August 15, 1995, and a response to Reporting Items (2) - (4) on November 20, 1995. Your August 15, 1995, response indicates that PECO is an 1 active participant in the BWR Vessel and Internals Project (BWRVIP) and that l PECO endorsed the BWRVIP response on these matters dated August 10, 1995.

PEC0's November 20, 1995, response indicated that PECO also endorsed the BWRVIP response dated November 15, 1995. Since PECO has submitted the -

requested responses and has not indicated that the previously submitted evaluations are not valid, the staff considers the RPV integrity data for LGS, Units 1 and 2, to be complete at this time. The staff therefore concludes that your efforts regarding GL 92-01, Rev. 1, Supp. I are complete. This completes all actions related to the referenced TAC Numbers.

The staff has also noted that you may be waiting for some of the Owners Groups' Reactor Vessel Working Groups to complete activities to establish a  ;

comprehensive RPV information database. These assessments are expected to be '

completed by the summer of 1997. We request that you provide us with the results of the Owners Groups' programs relative to your plant. When you l provide this information, the staff may open a plant-specific TAC No. for its  !

review.

Thank you for your cooperation.

Sincerely,

/S/ ,

Frank Rinaldi, Project Manager i Project Directorate I-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation Docket Nos. 50-352/353 cc: See next page DISTRIBUTION:

Docket File OGC ACRS SVarga PUBLIC DMcDonald WPasciak, RGN I FRinaldi PDI-2 Reading JStolz JZwolinski M0'Brien 0FFICE PDI-2/PM d// PDI-2/LA/ ) PDI-2/PD nff NAME FRinaldi [ ' mob h JStolz F DATE /'21 G/96 b/(/96 12-/ 4 /96 0FFICIAL RECORD COPY FILENAME: g:\M92691.LTR

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, i G. Hunger, Jr. 1 Revised evaluations and certifications were to include consideration of Position 2.1 of RG 1.99, Revision 2, as applicable, and any new data. The i information in Reporting Item (1) was to be submitted within 90 days of the issuance of the GL. The information in Reporting Items (2) - (4) was to be 4 submitted within 6 months of the issuance of the GL. j The NRC staff has noted that PECO submitted a response to Reporting Item (1) on August 15, 1995, and a response to Reporting Items (2) - (4) on November 20, 1995. Your August 15, 1995, response indicates that PECO is an active participant in the BWR Vessel and Internals Project (BWRVIP) and that PECO endorsed the BWRVIP response on these matters dated August 10, 1995.  !

PECO's November 20, 1995, response indicated that PECO also endorsed the BWRVIP response dated November 15, 1995. Since PECO has submitted the requested responses and has not indicated that the previously submitted i evaluations are not valid, the staff considers the RPV integrity data for LGS, '

Units 1 and 2, to be complete at this time. The staff therefore concludes that your efforts regarding GL 92-01, Rev. 1, Supp. I are complete. This  ;

completes all actions related to the referenced TAC Numbers. '

The staff has also noted that you may be waiting for some of the Owners  !

Groups' Reactor Vessel Working Groups to complete activities to establish a comprehensive RPV information database. These assessments are expected to be completed by the summer of 1997. We request that you provide us with the results of the Owners Groups' programs relative to your plant. When you provide this information, the staff may open a plant-specific TAC No. for its review.

Thank you for your cooperation.

Sincerely, M fn W l Frank Rinaldi, Project Manager Project Directorate I-2 1 Division of Reactor Projects - I/II '

Office of Nuclear Reactor Regulation Docket Nos. 50-352/353 cc: See next page

. I Mr. George A. Hunger, Jr. Limerick Generating Station, I PECO Energy Company Units 1 & 2 cc:

J. W. Durham, Sr., Esquire Mr. Rich R. Janati, Chief Sr. V.P. & General Counsel Division of Nuclear Safety PECO Energy Company PA Dept. of Environmental Resources 2301 Market Street P. O. Box 8469 Philadelphia, Pennsylvania 19101 Harrisburg, Pennsylvania 17105-8469 Mr. David P. Helker, MC 62A-1 Mr. Michael P. Gallagher Manager-Limerick Licensing Director - Site Engineering PECO Energy Company Limerick Generating Station 965 Chesterbrook Boulevard P. O. Box A Wayne, Pennsylvania 19087-5691 Sanatoga, Pennsylvania 19464 Mr. Walter G. MacFarland, Vice President Limerick Generating Station Mr. James L. Kantner  ;

Post Office Box A Manager-Experience Assessment i Sanatoga, Pennsylvania 19464 Limerick Generating Station P. O. Box A ,

Mr. Robert Boyce Sanatoga, Pennsylvania 19464 l Plant Manager Limerick Generating Station Library P.O. Box A US Nuclear Regulatory Commission 1 Sanatoga, Pennsylvania 19464 Region I 475 Allendale Road Regional Administrator King of Prussia, PA 19406 i U.S. Nuclear Regulatory Commission Region I Mr. Ludwig E. Thibault 475 Allendale Road Senior Manager - Operations King of Prussia, PA 19406 Limerick Generating Station P. O. Box A Mr. Neil S. Perry Sanatoga, Pennsylvania 19464 Senior Resident Inspector US Nuclear Regulatory Commission Dr. Judith Johnsrud P. O. Box 596 National Energy Committee Pottstown, Pennsylvania 19464 Sierra Club 433 Orlando Avenue Mr. Darryl P. Lequia State College, PA 16803 Director - Site Support Services Limerick Generating Station P.O. Box A Sanatoga, Pennsylvania 19464 Chairman Board of Supervisors of Limerick Township 646 West Ridge Pike Linfield, PA 19468