ML16342E008
| ML16342E008 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 03/06/1998 |
| From: | Steven Bloom NRC (Affiliation Not Assigned) |
| To: | Rueger G PACIFIC GAS & ELECTRIC CO. |
| References | |
| GL-96-01, GL-96-1, TAC-M94670, TAC-M94671, NUDOCS 9803110353 | |
| Download: ML16342E008 (6) | |
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~o gp pe 9' UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 March 6, 199S Mr. Gregory M. Rueger, Senior Vice President and General Manager Pacific Gas and Electric Company Nuclear Power Generation N9B P. O. Box 770000 San Francisco, California 94177
SUBJECT:
COMPLETION OF LICENSING ACTION FOR GENERIC LETTER 96-01, "TESTING OF SAFETY-RELATED LOGIC CIRCUITS," DIABLOCANYON POWER PLANT, UNITNOS.
1 AND 2 (TAC NOS. M94670 AND M94671)
Dear Mr. Rueger:
On January 10, 1996, the U.S. Nuclear Regulatory Commission (NRC) issued Generic Letter (GL) 96-01, "Testing of Safety-Related Logic Circuits," to all holders of operating licenses or construction permits. The NRC issued GL 96-01 for three principal reasons:
1.
Notifyaddressees about problems with testing of safety-related logic circuits; 2.
Request that all addressees implement the actions described within the generic letter; and Require that all addressees submit to the NRC a written response regarding implementation of the requested actions.
In GL 96-01, the NRC staff specifically requested that licensees take the following actions:
Compare electrical schematics and logic diagrams for the reactor protection system, emergency diesel generator load shedding and sequencing, and actuation logic for the engineered safety feature systems against plant surveillance test procedures to ensure that all portions of the logic circuitry, including the parallel logic, interlocks, bypasses, and inhibit circuits, are adequately covered in the surveillance procedures to fulfillthe g
technical specification requirements.
This review should also include relay contacts, control switches, and other relevant electrical components within these systems, utilized in the logic circuits performing a safety function; and Modifythe surveillance procedures as necessary for complete testing to comply with the technical specifications.
Additionally, the licensee may request an amendment to the technical specifications ifrelief from certain testing requirements can be justified.
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Mr. Gregory M. Rueger I)arch 6, 1998 Furthermore, the NRC staff required that addressees prepare and submit the following:
1.
Awritten response indicating whether or not the licensee would implement the actions requested above or propose an alternative action; 2.
A schedule for completing the requested actions or proposed alternative; and 3.
A response confirming completion of the requested actions.
In response to GL 96-01, you provided letters dated April 18, 1996, February 13, 1997, and January 22, 1998, for Diablo Canyon, Units 1 and 2. These submittals provided both the information requested and the responses required by GL 96-01; therefore TAC Nos. M94670 and M94671 are closed.
Ifyou have any questions regarding this matter, please contact me at (301) 415-1313.
Sincerely, Original Signed By Steven D. Bloom, Project Manager Project Directorate IV-2 Division of Reactor Projects III/IV Office of Nuclear Reactor Regulation Docket Nos. 50-275 and 50-323 cc: See next page Docket File H. Garg, NRR PUBLIC ACRS PD4-2 Reading File EGA1 W. Bateman S. Bloom E. Peyton H. Wong OGC DOCUMENT NAME:DC94670.LTR To receive a copy of this document, indicate in the box: "C" = Copy without enclosures "E" = Copy with enclosures "N" = No copy OFFICE NAME DATE PM/PDIV-SB!oom 3/i/8 LA/PD IV-2 EPeyton 3 /&./98 HICB:NRR HGarg A'/+/98 OFFICIAL RECORD COPY
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.Mr. Gregory M. Rueger March 6, 1998 CC:
NRC Resident Inspector Diablo Canyon Nuclear Power Plant cjo U.S. Nuclear Regulatory Commission P. O. Box 369 Avila Beach, California 93424 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission Harris Tower & Pavillion 611 Ryan Plaza Drive, Suite 400 Arlington, Texas 76011-8064 Dr. Richard Ferguson, Energy Chair Sierra Club California 1100 11th Street, Suite 311 Sacramento, California 95814 Christopher J. Warner, Esq.
Pacific Gas 8 Electric Company Post Office Box 7442 San Francisco, California 94120 Ms. Nancy Culver San Luis Obispo Mothers for Peace P. O. Box 164 Pismo Beach, California 93448 Mr. Robert P. Powers Vice President and Plant Manager Diablo Canyon Nuclear Power Plant P. O. Box 56'vila Beach, California 93424 Chairman San Luis Obispo County Board of Supervisors Room 370 County Government Center San Luis Obispo, California 93408 Telegram-Tribune ATIN: Managing Editor 1321 Johnson Avenue P.O. Box 112 San Luis Obispo, California 93406 Mr. Truman Burns Mr. Robert Kinosian California Public Utilities Commission 505 Van Ness, Room 4102 San Francisco, California 94102 Mr. Steve Hsu Radiologic Health Branch State Department of Health Services Post Office Box 942732 Sacramento, California 94232 Diablo Canyon Independent Safety Committee ATTN: Robert R. Wellington, Esq.
Legal Counsel 857 Cass Street, Suite D Monterey, California 93940
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