ML20128B918
| ML20128B918 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 11/20/1992 |
| From: | Mcdonald D Office of Nuclear Reactor Regulation |
| To: | Denton R BALTIMORE GAS & ELECTRIC CO. |
| Shared Package | |
| ML20128B921 | List: |
| References | |
| REF-GTECI-A-46, REF-GTECI-SC, TASK-A-46, TASK-OR GL-87-02, GL-87-2, NUDOCS 9212040146 | |
| Download: ML20128B918 (4) | |
Text
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- 'g g,gNoh UNITED STATES Y
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Ep NUCLEAR REGULATORY COMMISSION -
t, WASHIf.GTON, D. C. 20655 3,.
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November-20, 1992 Docket Nos.'50-317 j
and 50-318 4
Mr. Robert-E. Denton Vice President - Nuclear Energy Baltigore Gas & Electric Cempany Ccivert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, Maryland 20657-4702
-Daar Mr. Denton:
SUBJECT:
SAFETY EVALUATION REGARDING SEPTEMBER.18, 1992, RESPONSE:
TO SUPPLEMEN1' 1 TO GENERIC LETTER 87-02 (TAC NOS.-M69435; AND M69436)-
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By letter dated September 18, 1992, Baltimore Gas and Electric-Company (BG&E)!
submitted its response to Supplement No. I to Generic letter 87-02,
" Verification of Seismte-Adequacy-of Mechanical and Electrical Equipment In Operating Reactors,- Unresolved Sa/ety Issue (US1) A-46,"_ for-Calvert Cliffs Nuclear Power Plant Unit Nos.1 & 2.
L Supplement No.1 i.o 3L 67-02 required that all addressees provide,.within 120 ~
days of the issue date of the supplement, either a commitment to use both the-
- Seismic Qualification Utility Group (SQUG) commitments and-the implementation guidance described in the Generic. Implementation Procedure, Revision-2
_(GlP-2)', as= corrected on February 14, 1992, and as supplementeJ by 'he staff's' Supplemental Safety Evaluation-Report No. 2_(SSER No. 2) on GIP-2, or else provide an alternative method for responding-to GL 87-02.
The supplement also reriuired that those addressees c xmitting to implement GIP-2: provide an-implementation schedule, and provide the detailed information asito what i
procedures and criteria were used to generate the !.1-structure respJnsen spectra-to be used for USI~A-46 In addition, the staff requested in'SSER No. 2, that the. licensees' inform the staff'in.the-120-day _ response if they intend to change their licensing basis to reflect a commitment to the USI' Av46 (GIP-?) methodology' for verifying the seismic adequacy of_ mechanical and; electrical. equipment, prior to receipt of the staff's plant-specific safety-
- evaluation resolving USI A-46.
At indicated in the enclosed Safety Evaluation:(Enclosure 1), with the exception of the deviation from the definition cfisafe-shutdown, % staff interprets'your response-to Supplement No. l~ to GL 87-02 as a commitment to-
'the entire GIP-2 including:both the SQUG commitments and the:implementati_on l guidance, and therefore' considers ~it acceptable.
However, in: addition to
-- -implementing the guidance provided in the August 21, 1992, SQUG' letter,you:
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e Mr. Robert C. Denton November 20, 1992 should also refer tc Enclosure 2 to this letter which provides the NRC staff's -
response to the SQUG letter.
If the staff's interpretation regarding your commitment is incorrect. then you should provide for staff review, alternative criteria, and procedures for responding to GL 87-02 within 30 days.
Your response indicated that you plan to deviate from the GIP-2 commitments with regards to the definition of safe shutdown which will be used for the irplementation of USI A-46.
This issue was reviewed by the staff and found to be acceptable.
Although your proposed implementation schedule exceeds the 3-year response period requested by the staff, you provided an adequate justification for your schedule, and therefore, it is acceptable.
With respect to changes to the current licensing basis methodology, the staff recopizes that you may revise your licensing basis in accordance with 10 CFR 50.59 to reflect the acceptability of the USI A-46 (GIP) methodology for verifying the seismic adequ#cy of electrical and mechanical equipment covereu by the GIP, provided the change is consistent with both the SQUG commitments and the implementation guidance.
The staff finds that BGTiE's submittal concerning ir.-structure response spectra for resolving USI A-46, is acceptable.
Sincerely, Y
k.
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Dani G. McDonaM. Snior Project Manager Project Directorate I-l Division of Reactor Projects - I/II t
Office of Nuclear Reactor Regulation l
Enclo:ures.
l 1.
Safety Evaluation l
2.
Staff's October 2, 1992:
l Rn ponse To August 21, 1992, l
SQUG Letter l
I cc w/ enclosures:
See noxt page I
^
l 1
M Mr. Robert E. Denton Calvert Cliffs Nuclear Power. Plant l.
Baltimore Gas & Electric ic.mpany Unit Nos. I and 2 cc:
Mr. Nichael Moore, President Mr. Joseph H. Walter Calvert County Board of Engineering Division Commissioners Public Service Commission of 17511ain Street Maryland Prince Frederick. Maryland 20678 American Building 231 E. Baltimore Street D. A. Brune, Esquire Baltimore, Maryland 21202-348J General Counsel Baltimore Gas and Electric Company Kristen A. Burger,-Esquire P. O. Box 1475 Maryland People's Counsel Baltimore, Maryland 21203 American Bui ding, 9th Floor-231 E. Baltimore Street Jay E. Silberg, Esquire Baltimore, Maryland 21202 Shaw, Pittman, ?otts and Trowbridge 2300 N Street, NW Patricia T. Birnie, Esquire Washington, DC 20037 Co-Director Maryland Safe Energy Coalition Mr. G. L. Detter, Director, NRM P. O. Box 33111 Calvert Cliffs Nuclear Power Plant Baltimore, Maryland "1218 MD Rts. 2 & 4, P. O. Box 1535 Lusby, Maryland 20657 Resident Inspector c/o U.S Nuclear Regulatory Commission P. O. Box 287 St. Leonard, Maryland 20685 Mr. Richard I. McLean Administrator - Radioccology Department of Natural Resources
. 580 Taylor Avenue Tawes State Office Building B3 Annapolis, Maryland 21401 i
Regional Administrator, Region I U.S. Nuclear _ Regulatory Commission 475 Allendale Road King of Prussia, Pennsylvania 19406 l
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