ML20084N360

Forwards USI A-46 Summary Rept Ei Hatch Nuclear Plant Unit 1 & USI A-46...EI Hatch Nuclear Plant Unit 2, in Response to Suppl 1 to GL 87-02

ML20084N360
Person / Time
Site:	Hatch
Issue date:	05/30/1995
From:	Beckham J GEORGIA POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20084N363	List: ML20084N360 ML20084N369 ML20084N388
References
REF-GTECI-A-46, REF-GTECI-SC, TASK-A-46, TASK-OR GL-87-02, GL-87-2, TAC-M69451, TAC-M69452, NUDOCS 9506080006
Download: ML20084N360 (3)

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Georgia Power Company r 60 inverness Center Parbway Post Othee Bor 1295 6 -

Birmingham. Alabama 35201 Telephone 205 877-7279 L

J. T. Beckham, Jr. Georgia Power j atch Pro e Fr> swhm*cr sysm May 30, 1995 l

Docket Nos. 50-321 HL-4846 50-366 TAC Nos. M69451 M69452 U.S. Nuclear Regulatory Commission ATTN: Docket Control Desk Washington, D.C. 20555 Edwin I. Hatch Nuclear Plant Results of Unresolved Safety Issue A-46 Review Gentlemen:

In accordance with Georgia Power Company's (GPC' September 16,1992, response to Supplement No. I to Generic Letter (GL) 87-02 (Reference 1), GPC submits the enclosed two reports summarizing the results of the USI A-46 review for Plant Hatch Unit 1 and Unit 2. The programs for Unit I and Unit 2 successfully verify the seismic adequacy of the electrical and mechanical equipment covered by the Seismic Qualification Utility Group (SQUG) Generic Implementation Procedure (GIP), Revision 2 (Reference 2).

Thei efore, the completion of this program constitutes Plant Hatch's resolution of USI A-46.

i The modifications associated with outliers identified during the evaluations of both units are partially complete with the remainder scheduled for completion in 1995. Work not requiring a design change will be completed using site maintenance work orders. Detailed information relative to the modifications is included in Appendix L of each unit's report.

A complete list of references used in the evaluations is contained in the Reference section of each unit's report.

In the NRC's September 20,1992,120-day response to Supplement No. I to GL 87-02, (Reference 3), the Staffinterpreted GPC's response as a commitment to the entire SQUG GIP, Revision 2, including both the SQUG commitments and the implementation guidance. In agreement with the Stafi's interpretation, the Plant Hatch Unit I and Unit 2 evaluations were performed per Reference 2, as clarified and interpreted by NRC Supplemental Safety Analysis Report No. 2 (Reference 4), except as noted below.

9506080006 950530 PDR ADOCK 05000321 P PDR L 6, 1 \  !

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r Georgia Powerih U. S. Nuclear Regulatory Commission Page 2 May 30, 1995 An exception to the SQUG GIP criteria was taken in that a third-party review of the Unit 2 USI A-46 evaluation was not performed. Thejustification for omission of the third-pany review is documented in detail in Sec: ion 4.9 of the enclosed Unit 2 repon. In summary, the review was omitted for the following reasons:

1. An extensive third-pany review was performed on the Unit 1 USI A-46 program. The third party review verified the expertise of the personnel performing the Unit 1 evaluations.

2. The same personnel who performed the Unit I evaluations performed the Unit 2 evaluations.

3. The Unit 2 safe shutdown equipment list (SSEL), with few exceptions, is identical to the Unit 1 SSEL equipment.

4. The Hatch Unit I and Unit 2 reactor buildings are essentially identical and have the same soil conditions. The control building, diesel generator building, and intake stmeture are shared by both Units 1 and 2.

Should you have any questions in this regard, please contact this oflice.

Sincerely, h / \

J. T. Beckham, hr.

DLM/eb

References:

1. Letter from J. T. Beckham, Jr. (GPC) to NRC, Response to Supplement I to Generic Letter 87-02, " Verification of Seismic Adequacy of Mechanical and Electrical Equipment in Operating Reactors, Unresolved Safety Issue A-46," dated l September 16,1992.

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2. " Generic Implementation Procedure for Seismic Verification of Nuclear Plant l Equipment," Revision 2, Seismic Qualification Utility Group, corrected February 14, 1992.

HL-4846 J

i GeorgiaPower b U. S. Nuclear Regulatory Commission Page:

May 30, 1995

3. Letter from Kahtan N. Jabbour (NRC) to W. G. Hairston, III (GPC), " Evaluation of Plant Hatch Units 1 and 2,120-Day Response to Supplement No. I to Generic Letter 87-02," dated November 20,1992.

4. " Supplemental Safety Evaluation Report No. 2 on Seismic Qualification Utility Group's Generic Implementation Procedure," Revision 2, corrected February 14, 1992, for implementation of GL 87-02 (USI A-46), " Verification of Seismic Adequacy of Equipment in Older Operating Nuclear Plants," NRC, May 22,1992.

Enclosures:

1. Plant Hatch Unit 1 Unresolved Safety Issue A-46 Review Summary Report

2. Plant Hatch Unit 2 Unresolved Safety Issue A-46 Review Summary Report cc: Georgia Power Company Mr. H. L. Sumner, Nuclear Plant General Manager NORMS U.S. Nuclear Regulatorv Commission. Washington. D.C.

Mr. K. Jabbour, Licensing Project Manager - Hatch US. Nuclear Regulatorv Commission. Region 11 Mr. S. D. Ebneter, Regional Administrator Mr. B. L. Holbrook, Senior Resident Inspector - Hatch HL-4846

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Unresolved Safety Issue A-46 SUMM ARY REPORT

.i EDWIN I. HATCH NUCLEAR PLANT O Unit i 4

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