ML16342A063
| ML16342A063 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 04/15/1993 |
| From: | Quay T Office of Nuclear Reactor Regulation |
| To: | Rueger G PACIFIC GAS & ELECTRIC CO. |
| References | |
| TAC-M86194, TAC-M86195, NUDOCS 9304200239 | |
| Download: ML16342A063 (6) | |
Text
April 15, 1993 Docket Nos.
50-275 and 50-323 Hr. Gregory H. Rueger 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:
INTERIM APPROVAL RELATING TO ASME CODE RELIEF REQUESTS SUBMITTED ON APRIL 13, 1993 FOR DIABLO CANYON NUCLEAR POWER PLANT, UNIT NO.
1 (TAC NO. M86194)
AND UNIT NO.
2 (TAC NO. H86195)
By letter dated April 13, 1993, Pacific Gas and Electric Company (PG&E) submitted a request for relief from the requirements of ASHE Section III, Subsection NC-7142, for Diablo Canyon Units 1 and 2.
This relief would allow PG&E to retain the installation of a locked open block valve downstream of a relief valve for the positive displacement pump (PDP).
The NRC staff has performed a preliminary review of your April 13, 1993 submittal and has determined that your proposed alternatives are acceptable on an interim basis until the staff can complete an in-depth evaluation of the relief request.
Since this interim approval has not resulted from a final review, you should be aware that our safety evaluation of your April 13, 1993 submittal could contain a relief request denial.
In summary, the NRC staff has determined that, pursuant to 10 CFR 50.55a(a)(3)(i),
granting this interim approval for relief, based on the administrative controls in place for ensuring the block valves remain locked open at all times unless the PDP is out of service, will provide an acceptable level of quality and safety pending completion of the staff's evaluation of your submittal.
If you have any questions regarding this issue, please contact me.
Sincerely, 9304200239 930%is PDR ADOCK 05000275 P
- PDR, cc:
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Theodore R.
Quay, Director Project Directorate V
Division of Reactor Projects III/IV/V Office of Nuclear Reactor Regulation
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 April 15, 1993 Docket Nos.
50-275 and 50-323 Mr. Gregory M. Rueger Nuclear Power Generation, B14A Pacific Gas and Electric Company 77 Beale Street, Room 1451 P.O.
Box 770000 San Francisco, California 94177
Dear Mr. Rueger:
SUBJECT:
INTERIM APPROVAL RELATING TO ASHE CODE RELIEF REQUESTS SUBMITTED ON APRIL 13, 1993 FOR DIABLO CANYON NUCLEAR POWER PLANT, UNIT NO.
1 (TAC NO. H86194)
AND UNIT NO.
2 (TAC NO. M86195)
By letter dated April 13, 1993, Pacific Gas and Electric Company (PG&E) submitted a request for relief from the requirements of ASME Section III, Subsection NC-7142, for Diablo Canyon Units 1 and 2.
This relief would allow PGKE to retain the installation of a locked open block valve downstream of a relief valve for the positive displacement pump (PDP).
The NRC staff has performed a preliminary review of your April 13, 1993 submittal and has determined that your proposed alternatives are acceptable on an interim basis until the staff can complete an in-depth evaluation of the relief request.
Since this interim approval has not resulted from a final review, you should be aware that our safety evaluation of your April 13, 1993 submittal could contain a relief request denial.
In summary, the NRC staff has determined that, pursuant to 10 CFR 50.55a(a)(3)(i),
granting this interim approval for relief, based on the administrative controls in place for ensuring the block valves remain locked open at all times unless the PDP is out of service, will provide an acceptable level of quality and safety pending completion of the staff's evaluation of your submittal.
If you have any questions regarding this issue, please contact me.
Sincerely, cc:
See next page Theodore R. quay, Director Project Directorate V
Division of Reactor Projects III/IV/V Office of Nuclear Reactor Regulation
l'r. 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 Hs.
Nancy Culver San Luis Obispo Mothers for Peace P. 0.
Box 164 Pismo Beach, California 93448 Ms. Jacquelyn C. Wheeler 3303 Barranca Court San Luis Obispo, California 93401 Managing Editor The County Telegram Tribune 1321 Johnson Avenue P. 0.
Box 112 San Luis Obispo, California 93406 Chairman San Luis Obispo County Board of Supervisors Room 370 County Government Center San Luis Obispo, California 93408 Mr. Truman Burns Mr. Robert Kinosian California Public Utilities Commission 505 Van Ness, Rm.
4102 San Francisco, California 94102 Hr. Steve Shu Radiologic Health Branch State Department of Health Services Post Office Box 942732 Sacramento, California 94234'egional 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 Michael H. Strumwasser, Esq.
Special Assistant Attorney General State of California Department of Justice 3580 Wilshire Boulevard, Room 800 Los Angeles, California 90010 Christopher J. Warner, Esq.
Pacific Gas 5 Electric Company Post Office Box 7442 San Francisco, California 94120 Hr. John Townsend Vice President and Plant Manager Diablo Canyon Power Plant P.
O.
Box 56 Avila Beach, California 93424 Diablo Canyon Independent Safety Committee ATTN:
Robert R. Wellington, Esq.
Legal Counsel 857 Cass Street, Suite D
Monterey, California 93940
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