ML20059M649

Applicant Exhibit A-F1,consisting of Re Review of Response to NRC Bulletin 92-01,Suppl 1

ML20059M649
Person / Time
Site:	Diablo Canyon
Issue date:	08/20/1993
From:	Rood H Office of Nuclear Reactor Regulation
To:
References
OLA-2-A-0F1, OLA-2-A-F1, NUDOCS 9311190211
Download: ML20059M649 (3)

Text

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1. p'%%,,/f-[/ o UNITED STATES 6

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! E NUCLEAR REGULATORY COMMISSIOrd ' RECEIVED

'( 'f WASHINGTON. D.C. 20m NUCLEAR REGULATORY AFFAIRS g* . . . . . '# '93 Of" 28 P 6 :27 October 27, 1992 NOV 031992 Docket Nos. 50-275 dDl4\\GMG HD DISTRIBUTION CHRON l RMS ONLY and 50-323 Mr. Gregory M. Rueger Senior Vice President and General Manager Nuclear Power Generation, B14A Pacific Gas and Electric Company 77 Beale Street, Room 1451 P.O. Box 770000 San francisco, California 94177

SUBJECT:

REVIEW 0F RESPONSE 10 NRC BULLETIN 92-01, SUPPLEMENT NO. 1 - FAILURE OF THERMO-LAG 330 FIRE BARRIER SYSTEM TO PERFORM ITS SPEClflED FIRE ENDURANCE FUNCTION - DIABLO CANYON NUCLEAR POWER PLANT, UNIT NOS. 1 AND 2 Supplement I to NRC Bulletin 92-01, " Failure of Thermo-Lag 330 fire Barrier System to Perform its Specified fire Endurance Function," requested licensees to: (1) identify areas of the plant that use either 1 or 3-hour pre-formed Thermo-Lag 330 panels and conduit shapes for the protection and separation of the safe shutdown capability; (2) in those plant areas in which Thermo-Lag fire barriers are used in raceways, walls, ceilings, equipment enclosures, or other areas to protect cable trays, conduits, or separate redundant safe shutdown functions, implement, in accordance with plant procedures, the appropriate compensatory measures consistent with those which would be implemented by either the plant Technical Specifications or the operating license for an inoperable stating whether the licensee fire barrier; has or has andnot (3)ren ta the above actions and whereprovide a writt the licensee has declared fire barriers inoperable, and describe the measures being taken to ensure or restore fire barrier operability.

We have reviewed your letter dated September 28, 1992, submitted in response to NRC Bulletin 92-01, Supplement 1. By utilizing a self-contained, portable fire detection system in conjunction with an hourly fire patrol and administrative controls, we conclude that the intent of your technical specifications is still met. We find your selected method of providing fire protection / prevention without reducing the effectiveness of your existing fire protection capability to be acceptable. Staff acceptance of this methodology w w cunnam m h>,p%

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.-- NOV 0 61992 CHRIS10PHER J. WARNER

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198601 Mr. Gregory M. Rueger I is limited to the Diablo Canyon Nuclear. Power Plant because of the plant specific nature of the analyses and operating conditions. If at some future time you change the approved methodology, please inform us. ,

Sincerely, k '

Har ;' Roo , Senior Project Manager Project Directorate V

. Division of Reactor Projects III/IV/V-Office of huclear Reactor Regulation ,

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. Mr. Gregory M. Rueger Pacific Gas and Electric Company Diablo Canyon 4

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NRC Resident Inspector Mr. Hank Kocol Diablo Canyon Nuclear Power Plant Radiologic Health Branch c/o U.S. Nuclear Regulatory Commission. State Department of Health Services P. O. Box 369 Post Office Box 942732 Avila Beach, California 93424 Sacramento, California 94234 ~

Dr. Richard Ferguson, Energy Chair .

Sierra Club California Regional Administrator, Region V 6715 Rocky Canyon U.S. Nuclear Regulatory Commission '  :

Creston, California 93432 1450 Maria Lane,1 Suite 210 Walnut Creek, California 94596 Ms. Sandra A. Silver Mothers for Peace Mr. Peter H.. Kaufman 660 Granite Creek Road Deputy Attorney General Santa Cruz, California 95065 State of California-110 West A Street, Suite 700 Ms. Jacquelyn C. Wheeler San Diego, California 92101 3303 Barranca Court San Luis Obispo, California 93401 Ms. Nancy Culver 192 Luneta Street.

Managing Editor San Luis Obispo, California 93401 The .

County Telegram Tribune 1321 Johnson Avenue Michael M. Strunwasser, Esq.  !

P. O. Box 112 Special Assistant Attorney General San Luis Obispo, California 93406 State of California Department of Justice Chairman 3580 Wilshire Boulevard, Room 800 San Luis Obispo County Board of Los Angeles, California l90010 -

Supervisors Room 370 County Government Center San Luis Obispo, California 93408 Christopher J. Warner, Esq.  ;

Pacific Gas & Electric Company Post Office Box 7442 San Francisco, California 94120 Diablo Canyon Independent Safety Committee ATTN: Robert T. Wellington, Esq.

Legal Counsel

• 857 Cass Street, Suite D Monterey, California 93940 i

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