ML16341B984

Submits Followup to 830609 & 10 Telcons Re Resolution of Issue of Appropriate Intake Temp to Be Used in Component Cooling Water Sys post-accident Heat Removal Analysis.Draft Should Be Submitted Prior to 830701 Submittal

ML16341B984
Person / Time
Site:	Diablo Canyon
Issue date:	06/22/1983
From:	Knighton G Office of Nuclear Reactor Regulation
To:	Schuyler J PACIFIC GAS & ELECTRIC CO.
References
TAC-49935, NUDOCS 8307050359
Download: ML16341B984 (8)

Text

4 8

e' DISTRIBUTION JN 8 3 1983

( Document, Control 50=275'.

NRC PDR L PDR NSIC PRC System LB83.Reading JLee AVietti JWermie1

)

Docket No. 50-275 Mr. J. 0. Schuyler, Vice President HSchier ling

'-Nuclear. Power Generation.

BBuckley

~ c/o Nuclear Power Generation, Licensing Attorney,, OELD

'acific Gas

& E1ectric=Company-ACRS (16) 77 Beale Street,'oom

1435, Jordan, IE

,San Francisco, Ca1ifornia 94106 Taylor, IE

Subject:

Diablo Canyon Component Cooling Hater System (CCHS)

PG&E committed to provide the NRC staff the following information by July 1, 1983.

1.

The information needed by the staff in the enclosure to assure that the temperature monitoring equipment and procedures will reflect on accurate measurement of the intake temperature.

2. If it is necessary to valve in the second (normally isolated)

CCH heat exchanger, confirm that proper CCHS operation is provided with two heat exchangers in operation.

3.

Affirm that a 64'F ocean temperature will not effect any of the results of the accident analyses previously approved with an assumed FSAR value of 70'F maximum ocean water intake temperature.

This letter is a follow-up of two telephone conversations between PG&E and the NRC on the Diablo Canyon CCHS.

In the first telephone call on June 9, 1983, the NRC staff gave PG&E several options for resolving the issue of the appropriate intake temperature to be used in the CCHS post accident heat removal analysis for assuring acceptable equipment operation.

In the second telephone call on June 10, 1983, the staff and PG&E dis-cussed a proposed technical specification which would require valving in the second (nvemally isolated)

CCH heat exchanger (and/or) derating the plant if temperatures in the intake cove should exceed 64'F for a specified time period, as well as other alternatives.

This would also require PG&E to propose a satisfactory program for monitoring the intake cove temperature.

8307050359 830b22 PDR ADOCK 05000275 P

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Provide a request for an amendment to the license and provide a proposed change to the technical specification stipulating 4hat action would be taken if the ocean water intake temperature exceeds 64'F.

This should include appropriate surveillance, limiting.

conditions for operation, action statement and a basis for the technical specification.

It is understood that PGBE staff will submit a draft prior to the'July 1, 1983 submittal and will work with the staff to assure a satisfactory response.

If clarification is necessary, please contact the Diablo Canyon CCWS Project Manager, Annette Yietti, who can be reached at telephone number (301) 492-4449.

Sincerely,

'Original signed by George W. Knighton George Knighton, Chief Licensing Branch P3 Division of Licensing Office of Nuclear Reactor Regulation cc:

See next page OFFICE SURNAME DATE P L)1 6/It /83 JWermei1

/ IG/83 LB h on 6/g (/83 NRC FORM 318 (10-80) NRCM 0240 OFFICIAL RECORD COPY USQ PO: 18S1~5-960

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Diablo Canyon Mr. J. O..Schuyler, Vice President Nuclear'Power Generation c/o Nuclear Power Generation, Licensing Pacific Gas and.Electric Company 77 Beale Street, Room 1435 San Francisco, California 94106 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 7443 San Francisco, California 94120 Janice E. Kerr, Esq.

California Public Utilities Commission 350 McAllister Street San Francisco, California 94102 Mr."'frederick Eissler-, President Sceni c.'Shorel ine Preservati on Conference, Inc.

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

Seymour

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

1725 Hamilton Avenue San Jose, CA 96125 Mr. John Marrs, Managing Editor San Luis Obispo County Telegram Tribune 1321 Johnson Avenue P. 0.

Box 112 San Luis Obispo, CA 93406 Resident Inspector/Diablo Canyon NPS c/o US Nuclear Regulatory Commission P. 0.

Box 369 Avila Beach, California. 93424 Ms'aye 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 Paul C. Valentine, Esq.

321 Lytton Avenue Palo Alto', California 94302 Dr. William E. Cooper Project Manager - 5511 Teledyne Engineering Services 130 Second. Avenue Waltham,.Massachusetts, 02254 Mr. Dick Blankenburg Editor

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

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

Suite 202 3216 North 3rd Street Phoenix, Arizona 85012 Mr.

W.

C. Gangloff Westinghouse Electric Corporation P.

0.

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

P. 0.

Box 1178 Oklahoma City, Oklahoma 73101

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Diablo Canyon Arthur C. Gehr, Esq.

Snell 8 Wilmer 3100 Valley Center Phoenix, Arizona 85073 Mr.

Owen H. Davis, Director Federal Agency Relations Pacific Gas 8 Electric Company 1050 17th Street, N.

W.

Suite 1180 Washington, D.

C.

20036 Regional Administrator - Region V

US Nuclear Regulatory Commission 1450 Maria Lane Suite 210 Walnut Creek, California 94596 Dr. Jose Roesset 3506 Duval Road Austin, Texas 78759

'ichael J.

Strumwasser, Esq.,

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

~San Jose Mercury News 750 Ridder Park Drive San.Jose, California 95190 Mr. Mark.'Gottlieb.

California Energy Commission 1111 Howe Avenue, MS 27 Sacramento, California. 95825 Maurice Axelrad, Esq.

Lowenstein, Newman, Reis'nd Axelrad 1025 Connecticut

Avenue, NW Washington, D.

C.

20036

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