ML16342B240

Informs That Info Provided in 860808 & 21 Ltrs Re Limited Containment Isolation Valve Opening,Per License Conditions 2.C(6)g & 2.C(5)b for Units 1 & 2,respectively,being Evaluated.Completion of Evaluation Expected by End of Yr

ML16342B240
Person / Time
Site:	Diablo Canyon
Issue date:	10/29/1986
From:	Varga S Office of Nuclear Reactor Regulation
To:	Shiffer J PACIFIC GAS & ELECTRIC CO.
References
NUDOCS 8611030150
Download: ML16342B240 (6)

Text

OCT 29

$986 Docket Nos.

50-275 and 50-323 Mr. J.

D. Shiffer, Vice President Nuclear Power Generation c/o Nuclear Power Generation, Licensing Pacific Gas and Electric Company 77 Beale Street, Room 1451 San Francisco, California 94106

, DISTRIBUTION Local PDR T. Novak H. Schierling E. Jordan ACRS(10)

J.

Shapaker M. Mendonca L. Chandler NRC File PD83 Rdg.

OGC C.

Vogan J. Partlow J. Pulsipher G. Bagchi P. Narbut

SUBJECT:

DIABLO CANYON UNITS 1 AND 2 LICENSE CONDITION FOR CONTAINMENT ISOLATION VALVES In our Safety Evaluation Report, Supplement Nos.

14 (SSER-14, April 1981) and 31 (SSER-31, April 1985) we stated that the containment isolation valves in the 12-inch vacuum/over pressure relief line meet the operability requirements of the staff's interim position of October 23, 1979.

The opening of the valves was limited to 50 degrees.

This requirement for limited valve opening was in-cluded as License Condition 2.C.(6)g.

and 2.C.(5)b. in the full power licenses for Diablo Canyon Units 1 and 2, respectively.

The staff further stated that this limitation will remain in effect until valve operability is demonstrated in accordance with the Standard Review Plan, Sections

3. 10, 6.2.4 and Branch Technical Position BTB CSB 6-4.

In SSER-31 the staff stated such demonstration should be provided prior to start-up after the first refueling.

The staff is currently evaluating, with the assistance of a contractor, the information which you provided in your letters of August 8 and 21, 1986 as required by the license condition for both units.

We expect to complete the review by the end of this year, that is, after the completion of the first refueling outage for Unit 1.

The license condition for both units and the Technical Specification limit shall remain in effect until we have completed our evaluation of your submittals.

Sincerely,

~~~81>>Ql s1gggp y~

Steven A. Varga, Director Project Directorate P3 Division of PWR Licensing-A cc:

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Mr. J.

D. Shiffer Pacific Gas and Electric Company Diablo Canyon CC:

Philip A. Crane, Jr.,

Esq.

Pacific Gas

& Electric Company Post Office Box 7442 San Francisco, California 94120 Mr. Malcolm H. Furbush Vice President

- General Counsel Pacific Gas

& Electric Company Post Office Box 7442 San Francisco, California 94120 Janice E. Kerr, Esq.

California Public Utilities Commission 350 McAllister Street San Francisco, California 94102 Mr. Frederick Eissler, President Scenic Shoreline Preservation Conference, Inc.

4623 More Mesa Drive Santa Barbara, California 93105 Ms. Elizabeth Apfelberg 1415 Cozadero San Luis Obispo, California 93401 Mr. Gordon A. Silver Ms.'andra A. Silver 1760 Alisal Street San Luis Obispo, California 93401 Harry M. Willis, Esq.

Seymour

& Willis 601 California Street, Suite 2100 San Francisco, California 94108 Mr. Richard Hubbard MHB Technical Associates Suite K

1725 Hamilton Avenue San Jose, Cali fornia 95125 Arthur C. Gehr, Esq.

Snell

& Wilmer 3100 Valley Center Phoenix, Arizona 85073 NRC Resident Inspector/Diablo Canyon Nuclear Power Plant c/o U.S. Nuclear Regulatory Commission P. 0.

Box 369 Avila Beach, California 93424 Ms.

Raye Fleming 1920 Mattie Road Shell Beach, California 93440 Joel

Reynolds, Esq.

John R. Phillips, Esq.

Center, for Law in the Public Interest 10951 West Pico Boulevard Third Floor Los Angeles, California 90064 Mr. Dick Blankenburg Editor

& Co-Publisher South County Publishing Company P. 0.

Box 460 Arroyo Grande, California 93420 Bruce Norton, Esq.

Norton, Burke, Berry

& French, P.C.

202 E. Osborn Road P. 0.

Box 10569 Phoenix, Arizona 85064 Mr.

W.

C. Gangloff Westinghouse Electric Corporation P. 0.

Box 355 Pittsburgh, Pennsylvania 15230 David F. Fleischaker, Esq.

P. 0.

Box 1178 Oklahoma City, Oklahoma 73101 Managing Editor San Luis Obispo County Telegram Tribune 1321 Johnson Avenue P. 0.

Box* 112 San Luis Obispo, California 93406

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Pacific Gas 5 Electric Company Diablo Canyon CC:

Dr.

R.

B. Ferguson Siera Club - Santa Lucia Chapter Rocky Canyon Star Route Creston, California 93432 Mr. Leland M. Gustafson, Manager Federal Relations Pacific Gas 5 Electric Company 1726 M Street, N.W.

Suite 1100 Washington, DC 20036-4502 Regional Administrator, Region V

U.S. Nuclear Regulatory Commission 1450 Maria Lane Suite 210 Walnut Creek, California 94596 Michael J. Strumwasser, Esq.

Special Counsel to the Attorney General State of California 3580 Wilshire Boulevard, Suite 800 Los Angeles, California 90010 Mr. Tom Harris

'acramento Bee 21st and 0 Streets Sacramento, Cali fornia 95814 Mr. H. Daniel Nix California Energy Commission 1516 9th Street, MS 18 Sacramento, California 95814 Lewis Shollenberger, Esq.

US NUclear Regulatory Commission Region V

1450 Maria Lane Suite 210 Walnut Creek, California 94596 Mrs. Jacquelyn Wheeler 2455 Leona Street San Luis Obispo, California 93400 Mr. Thomas Devine Government Accountability Project Institute for Policy Studies 1901 gue Street, NW Washington, DC 20009 Chairman San Luis Obispo County Board of Supervisors Room 220 County Courthouse Annex San Luis Obispo, California 93401 Director Energy Facilities Siting Division Energy Resources Conservation and Development Commission 1516 9th Street Sacramento, California 95814 President California Public Utilities Commission California State Building 350 McAllister Street San Francisco, California 94102 Mr. Joseph

0. Ward, Chief Radiological Health Branch State Department of Health Services 714 P Street, Office Building 88 Sacramento, California 95814 Ms. Nancy Culver 192'uneta Street San Luis Obispo, California 93401 Ms. Laurie McDermott, Coordinator Consumers Organized for Defense of Environmental Safety 731 Pacific Street, Suite 42 San Luis Obispo, California 93401