ML063390066

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NRC Receipt of Pacific Gas and Electric Company Response to Generic Letter 2006-03, Potentially Nonconforming Hemyc and MT Fire Barrier Configurations
ML063390066
Person / Time
Site: Diablo Canyon  Pacific Gas & Electric icon.png
Issue date: 12/18/2006
From: Wang A
NRC/NRR/ADRO/DORL/LPLIV
To: Keenan J
Pacific Gas & Electric Co
Wang A, NRR/DORL/LPL4, 301-415-1445
References
TAC MD1573, TAC MD1574
Download: ML063390066 (3)


Text

December 18, 2006 Mr. John S. Keenan Senior Vice President and Chief Nuclear Officer Pacific Gas and Electric Company Diablo Canyon Power Plant P.O. Box 770000 San Francisco, CA 94177-0001

SUBJECT:

DIABLO CANYON POWER PLANT, UNIT NOS. 1 AND 2 - NRC RECEIPT OF LICENSEE RESPONSE TO GENERIC LETTER 2006-03, POTENTIALLY NONCONFORMING HEMYC AND MT FIRE BARRIER CONFIGURATIONS (TAC NOS. MD1573 AND MD1574)

Dear Mr. Keenan:

The Nuclear Regulatory Commission (NRC) acknowledges the receipt of your response dated June 6, 2006, to Generic Letter 2006-03, Potentially Nonconforming Hemyc and MT Fire Barrier Configurations. Under oath or affirmation, you have stated that Diablo Canyon Power Plant, Unit Nos. 1 and 2, does not rely on either the Hemyc or MT fire barrier system. You have submitted documentation under oath or affirmation, that the other 1 or 3-hour fire barrier that separates redundant safe shutdown trains located within the same fire area has been designed and installed in accordance with current NRC guidance. Based on your response, the basis for stating that this other fire barrier has been designed and installed in accordance with NRC guidance should be maintained on site, and will be subject to inspection during the normal NRC inspection process.

If you have any questions regarding this response, please contact me at (301) 415-1445.

Sincerely,

/RA/

Alan B. Wang, Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-275 and 50-323 cc: see next page

ML063390066 OFFICE NRR/LPL4/PM NRR/LPL4/LA NRR/AFPB/BC NRR/LPL4/BC NAME AWang LFeizollahi SWeerakkody DTerao DATE 12/10/06 12/12/06 12/15/06 12/18/06

March 2006 Diablo Canyon Power Plant, Units 1 and 2 cc:

NRC Resident Inspector Diablo Canyon Power Plant c/o U.S. Nuclear Regulatory Commission P.O. Box 369 Avila Beach, CA 93424 Sierra Club San Lucia Chapter ATTN: Andrew Christie P.O. Box 15755 San Luis Obispo, CA 93406 Ms. Nancy Culver San Luis Obispo Mothers for Peace P.O. Box 164 Pismo Beach, CA 93448 Chairman San Luis Obispo County Board of Supervisors 1055 Monterey Street, Suite D430 San Luis Obispo, CA 93408 Mr. Truman Burns Mr. Robert Kinosian California Public Utilities Commission 505 Van Ness, Room 4102 San Francisco, CA 94102 Diablo Canyon Independent Safety Committee ATTN: Robert R. Wellington, Esq.

Legal Counsel 857 Cass Street, Suite D Monterey, CA 93940 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission Harris Tower & Pavillion 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-8064 Richard F. Locke, Esq.

Pacific Gas & Electric Company P.O. Box 7442 San Francisco, CA 94120 City Editor The Tribune 3825 South Higuera Street P.O. Box 112 San Luis Obispo, CA 93406-0112 Director, Radiologic Health Branch State Department of Health Services P.O. Box 997414, MS 7610 Sacramento, CA 95899-7414 Mr. James D. Boyd, Commissioner California Energy Commission 1516 Ninth Street (MS 31)

Sacramento, CA 95814 Mr. James R. Becker, Vice President Diablo Canyon Operations and Station Director Diablo Canyon Power Plant P.O. Box 56 Avila Beach, CA 93424 Jennifer Tang Field Representative United States Senator Barbara Boxer 1700 Montgomery Street, Suite 240 San Francisco, CA 94111