ML16341C245

Forwards Request for Addl Info,Per Ongoing Review of Unit 2 Equipment Qualification.Reply Should Be Submitted within 2 Wks of Receipt of Request

ML16341C245
Person / Time
Site:	Diablo Canyon
Issue date:	10/31/1984
From:	Knighton G Office of Nuclear Reactor Regulation
To:	Shiffer J PACIFIC GAS & ELECTRIC CO.
References
NUDOCS 8411200409
Download: ML16341C245 (8)

Text

Docket Nos.:

50-275 and 50-323 OCT 31 1984 Mr. J.

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

Dear Mr. Shiffer:

DIS RIBUTION c e i e 50-275/323 PRC System VNoonan LPDR RLaRange NRC PDR GBagchi LB83 Reading HWalker JLee ACRS (16)

HSchierling LChandler, OELD NGrace EJordan TBishop JPKnight

Subject:

Diablo Canyon Unit 2 - Equipment gualification

, As a result of our ongoing review of the Diablo Canyon Unit 2 equipment qualification we request that you provide the information identified in the enclosure.

If any of the requested information has been submitted previously, a resubmittal is not necessary but you should clearly identify and reference such information.

The information should be submitted within two weeks of receipt of this letter.

If you have any questions please call Mr. Schierling, the licensing project manager for the Diablo Canyon Plant.

Sincerely,

Enclosure:

As stated cc:

See next page 0+piMsiagpq q George 'W. Knighton, Chief Licensing Branch No.

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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 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 Apfe 1 berg 1415 Cozadero San Luis Obispo, California 93401 Mr. Gordon A. Si iver Ms. Sandra A. Silver 1760 Ali sa 1 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, Ca 1 iforni a 95125 Mr. John Marrs, Managing Editor San Luis Obis o County Tele ram Tribune o nson venue P. 0.

Box 112 San Luis Obispo, California 93406 Diablo Canyon Resident Inspector/Diablo Canyon NPS c/o US Nuclear Regulatory Coomission 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

C

Arthur C. Gehr, Esq.

Snell E Wilmer 3100 Ya 1 1ey Center

. Phoenix, Arizona 85073 Hr. Lee H. Gustafson, Director Federal Agency Relations Pacific Gas 8 Electric Company 1050 17th Street, N.W.

Suite 1180 Washington, DC 20036 Regional Administrator - Region Y

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

Strumwasser, Esq.

Special Council to the Attorney General State of California 3580 Wilshire Boulevard, Suite 800 Los Angeles, California 90010 Mr. Tom Karris Sacremanto Bee 21st and 0 Streets Sacramento, California 95814 Hr. K. Daniel Nix California Energy Commission 1516 9th Street, MS 18 Sacramento, California 95814 Lewis Shollenberger, Esq.

US Nuclear Regulatory Commission Region Y

1450 Maria Lane Suite 210 Walnut Creek, Ca 1 ifornia 94596 Mr. Thomas Devine Government Accountability Project Institute for Policy Studies 1901 gue Street, NW Washington, DC 20009

C

.'2

Enclosure Request for Information Diablo Canyon Unit 2 Equipment qualification 1.

For seismic and dynamic qualification and for pump and valve operability assurance:

a.

Provide a list of all safety-related electrical and mechanical equipment with differences between Units 1 and 2.

I b.

Discuss changes between Units 1 and 2 in the seismic loading 'for equipment qualification due to changes in hazards estimates,

design, analysis and construction errors.

2.

For environmental qualification of electrical equipment important to safety:

a ~

Provide a statement, and its bases, that Unit 2 is in compliance with the requirements of 10 CFR 50.49.

This statement should indicate that, to determine compliance with 10 CFR 50.49, your review included:

(a) equipment for all design basis accidents (b) non safety-related equipment whose failure could affect safety-related equipment and (c) post-accident monitoring equipment that must meet the requirements of Regulatory Guide 1.97.

b.

Provide a list that includes all equipment within the scope of 10 CFR 50.49, installed or to be installed in Unit 2, that is different from equipment qualified for Unit 1.

Provide qualification information of all equipment on this list.

c.

For equipment within the scope of 10 CFR 50.49 that is not environmentally qualified, provide justification for interim operation in accordance with the requirements of paragraph (i) of 10 CFR 50.49.

3.

In June of 1984 the Westinghouse Electric Corporation notified each of the Westinghouse plant owners of a possible unreviewed safety question concerning the temperature envelope resulting from a main steam line break with releases of superheated steam as related to the environmental qualification of exposed equipment.

Discuss the environmental qualifi-cation of equipment in Unit 2 with respect to this matter in accordance with the requirements of 10 CFR 50.49(i).

(Note:

see also item Z.c above).