ML16342B923
| ML16342B923 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 10/27/1992 |
| From: | Rood H Office of Nuclear Reactor Regulation |
| To: | Rueger G PACIFIC GAS & ELECTRIC CO. |
| References | |
| IEB-92-001, IEB-92-1, NUDOCS 9210290093 | |
| Download: ML16342B923 (8) | |
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~O UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON. D.C. 20555 October 27, 1992 Docket Nos.
50-275 and 50-323 Mr. Gregory H. 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
Dear Hr. Rueger:
SUBJECT:
REVIEW OF
RESPONSE
TO NRC BULLETIN 92-01, SUPPLEHENT NO.
1 FAILURE OF THERMO-LAG 330 FIRE BARRIER SYSTEM TO PERFORH ITS SPECIFIED FIRE ENDURANCE FUNCTION DIABLO CANYON NUCLEAR POWER PLANT, UNIT NOS.
1 AND 2 Supplement 1 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 fire barrier; and (3) provide a written notification stating whether the licensee has or has not taken the above actions and where 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
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Hr. Gregory M. Rueger 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, cc:
See next page Harry Roo
, Senior Project Manager Project Directorate V
Division of Reactor Projects III/IV/V Office of Nuclear Reactor Regulation
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1 Mr. Gregory M. Rueger Pacific Gas and Electric Company Diablo Canyon CC:
NRC Resident Inspector Diablo Canyon Nuclear Power Plant c/o U.S. Nuclear Regulatory Commission P. 0.
Box 369 Avila Beach, California 93424 Dr. Richard Ferguson, Energy Chair Sierra Club California 6715 Rocky Canyon Creston, California 93432 Ms. Sandra A. Silver Mothers for Peace 660 Granite Creek Road Santa Cruz, California 95065 Ms. Jacquelyn C. Wheeler 3303 Barranca Court San Luis Obispo, California 93401 Managing Editor County Telegram Tribune 1321 Johnson Avenue P. 0.
Box 112 Luis Obispo, California 93406 Chairman Luis Obispo County Board of Supervisors Room 370 County Government Center San Luis Obispo, California 93408 Christopher J.
- Warner, Esq.
Pacific Gas L Electric Company Post Office Box 7442 San Francisco, California 94120 Hr. Hank Kocol Radiologic Health Branch State Department of Health Services Post Office Box 942732 Sacramento, California 94234 Regional Administrator, Region V
U.S. Nuclear Regulatory Commission 1450 Maria Lane, Suite 210 Walnut Creek, California 94596 Hr. Peter H. Kaufman Deputy Attorney General State of California 110 West A Street, Suite 700 San Diego, California 92101 Hs.
Nancy Culver 192 Luneta Street San Luis Obispo, California 93401 The Michael M. Strumwasser, Esq.
Special Assistant Attorney General San State of California Department of Justice 3580 Wilshire Boulevard, Room 800 San Los Angeles, California 90010 Diablo Canyon Independent Safety Committee ATTN:
Robert T. Wellington, Esq.
Legal Counsel 857 Cass Street, Suite D
Monterey, California 93940
h Mr. Gregory M. Rueger October 27, 1992 h
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
'ime you change the approved methodology, please inform us.
Sincerely, cc:
See next page DISTRIBUTION:
Or>ginal signed by Harry Rood, Senior Project Manager Project Directorate V
Division of Reactor Projects III/IV/V Office of Nuclear Reactor Regulation
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