ML20210T010

Informs That Closout for Texas Utilities Electric Response to GL 92-01,rev 1,suppl 1, Reactor Vessel Structural Integrity, for Comanche Peak Steam Electric Station,Units 1 & 2 Completed

ML20210T010
Person / Time
Site:	Comanche Peak
Issue date:	08/28/1997
From:	Polich T NRC (Affiliation Not Assigned)
To:	Terry C TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
References
GL-92-01, GL-92-1, TAC-M92662, TAC-M92663, NUDOCS 9709120241
Download: ML20210T010 (4)

Text

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/ August 28, 1997 L

Mr. C. Lance Terry TV Electric Group Vice President, Nuclear Attn: Regulatory Affairs Department P. O. Box 1002 Glen Rose, TX 76043

SUBJECT:

CLOSE0VT FOR TEXAS UTILITIES ELECTRIC (TV ELECTRIC) RESPONSE TO GENERIC LETTER 92-01, REVISION 1, SUPPLEMENT 1 FOR THE COMANCHE PEAK STEAM ELECTIC STATION, UNITS 1 AND 2 (TAC NOS. M92662 AND M92663)

Dear Mr. Terry:

On May 19, 1995, the Nuclear Regulatory Commission (NRC) issued Generic letter (GL) 92-01, Revision 1, Supplement 1 (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 requiremants 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 cpper shelf energy (USE) evaluations), and any potential impact on low temperature overpressure (LTOP) limits or pressure-temperature (P-T) limits."

hare 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 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 of the LTOP and P-T limits in the technical specifications, or (2) a certification that previously submitted evaluations remain valid.

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Mr. C. Lance Terry Revised evaluations and certifications were to include consideration of Position 2.1 of Regulatory Guide 1.99, Revision 2, as applicable, and any new data. The information in Reporting Item (1) was to be submitted withia 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.

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The staff has noted that TU Electric submitted the information requested in '

Reporting Items (1) - (4) on August 17,1995,(TXX-95220). Your res)onse indicates that TU Electic has performed some additional reviews of t1e pertinent Owners Group databases and has not found any additional data regarding the best-estimate chemistries for the RPV materials and surveillance capsules at the Comanche Peak Steam Electric Station (CPSES) Units 1 and 2.

Since TU Electric has submitted the requested information and has indicated that the previously submitted evaluations remain valid, the staff considers the RPV integrity data for the CPSES Units 1 and 2 to be complete at this time. The staff therefore concludes that no additional information regarding the structural integrity of the RPV at the CPSES Units 1 and 2 is available at this time, and that your efforts regarding GL 92-01, Rev. 1 Supp. I are complete. This completes all actions related to the referenced TAC Nos.

The staff has also noted that you are waiting for some of the Owners Groups Reactor Vessel Working Groups to complete activities to establish a comprehensive RPV information data base. These assessments are expected to be l completed by the September 1997. We request that you provide us with the l

results of the Owners Groups' programs relative to your plant. When you provide this information, the staff may open plant-specific TAC Nos. for its review.

Thank you for your cooperation.

I Sincerely, Timothy J. Polich, Project Manager Project Directorate IV-1 Division of Reactor Projects III/IV Office of Nuclear Reactor Regulation Docket Nos. 50-445 and 50-446 cc: See next page

O Mr. C. Lance Terry Revised evaluations and certifications were to include consideration of Position 2.1 of Regulatory Guide 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 staff has noted that TV Electric submitted the information requested in Reporting items (1) - (4) on August 17, 1995, (TXX-95220). Your response indicates that TU Electic has performed some additional reviews of the pertinent Owners Group databases and has not found any additional data regarding the best-estimate chemistries for the RPV materials and surveillance capsules at the Comanche Peak Steam Electric Station (CPSES) Units 1 and 2.

Since TV Electric has submitted the requested information and has indicated that the previously submitted evaluations remain valid, the staff considers the RPV integrity data for the CPSES Units 1 and 2 to be complete at this time. The staff therefore concludes that no additional information regarding the structural integrity of the RPV at the CPSES Units 1 and 2 is available at this time, and that your efforts regarding GL 92-01, Rev. 1, Supp. I are complete. This completes all actions related to the referenced TAC Nos.

The staff has also noted that you are waiting for some of the Owners Groups Reactor Vessel Working Groups to complete activities to establish a comprehensive RPV information data base. These assessments are expected to be completed by the September 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 plant-specific TAC Nos. for its review.

Thank you for your cooperation.

Sincerely, ORIGINAL SIGNED BY:

Timothy J. Polich, Project Manager Project Directorate IV-1 Division of Reactor Projects III/IV Office of Nuclear Reactor Regulation Docket Nos. 50-445 and 50-446 cc: See next page DISTRIBUTION:

Docket File OGC PUBLIC DMcDonald GHill (4) ACRS TPolich (2) TGwynn, RIV PDIV-1 r/f CHawes JClifford EAdensam (EGAl)

Document Name: CP92652.LTR OFC PM/PD4-1 LA/PD4-1 NAME TPolich/vw CHawest]hfl DATE T/)T/97 N $/N/97 COPY YES/NO YES/N0 0FFICIAL RECORD COPY

Mr. C. Lance Terry TU Electric Company Comanche Peak, Units 1 and 2 cc:

Senior Resident Inspectav Honorable Dale McPherson U.S. Nuclear Regulatory Lommission County Judge P. O. Box 1029 P. O. Box 851 Granbury, TX 76048 Glen-Rose, TX 76043 Regional Administrator, Region IV Office of the Governor U.S. Nuclear Regulatory Commission - ATTN: John Howard, Director 611 Ryan Plaza Drive, Suite 400 Environmental and Natural Arlington, TX 76011 Resources Policy P. O. Box 12428 Mrs. Juanita Ellis, President Austin, TX 78711 Citizens Association for Sound Energy 3 1426 South Polk {

Arthur C. Tate, Director Dallas, TX 75224 Division of Compliance & Inspection Bureau of Radiation Control Mr. Roger D. Walker Texas Department of Health TU Electric ,

1100 West 49th Street Regulatory Affairs Manager Austin, TX 78756-3189 P. S. Box 1002 ,

Glen Rose, TX 76043 l Texas Utilities Electric Company c/o Bethesda Licensing l 3 Metro Center, Suite 810 Bethesda, MD 20814 George L. Edgar, Esq.

Morgan, Lewis & Bockius 1800 M Street, N.W.

Washington, DC 20036-5869

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