ML16341F172

Advises That Util 880708 & 0930 & 890509 Responses to NRC Bulletin 88-004, Potential Safety-Related Pump Loss, Acceptable.Evaluation of Actions in Responding to Bulletin Should Be Documented for at Least 2 Yrs

ML16341F172
Person / Time
Site:	Diablo Canyon
Issue date:	05/17/1989
From:	Rood H Office of Nuclear Reactor Regulation
To:	Shiffer J PACIFIC GAS & ELECTRIC CO.
References
IEB-88-004, IEB-88-4, TAC-69907, TAC-69908, NUDOCS 8905310332
Download: ML16341F172 (8)

Text

May 17, 1989 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 EJ d

NRC II LPDR BGrimes GHolahan TAlexion MVirgilio MMccoy JLee ACRS (10)

HRood

, 'Knighton PDV Plant File OGC (for information only)

SUBJECT:

CLOSEOUT OF NRC ACTIVITIES ON NRC BULLETIN 88-04, "POTENTIAL SAFETY-RELATED PUMP LOSS,"

FOR DIABLO CANYON UNITS 1

AND 2 (TAC NOS.

69907 AND 69908)

NRC Bulletin 88-04 was issued on May 5, 1988 to all holders of operating licenses for nuclear power reactor s.

The bulletin requested the evaluation of all safety-related pumps for (1) pump-to-pump interaction during miniflow operation that could result in dead-heading of one or more of the pumps, and (2) the adequacy of the minimum flow bypass lines with respect to damage resulting from operation and testing in the minimum flow mode.

The bulletin also requested that within 60 days of receipt of the bulletin, licensees provide a written response that (a)

Summarizes the problems and the systems affected, (b)

Identifies the short-term and long-term modifications to plant operating procedures or hardware that have been or are being implemented to ensure safe plant operation, (c)

Identifies an appropriate schedule for long-term resolution of this and/or other significant problems that are identified as a result of this bulletin, and (d)

Provides justification for continued operation, particularly with regard to General Design Criterion 35, "Emergency Core Cooling," of Appendix A to 10 CFR Part 50, and 10 CFR 50.46, "Acceptance Criteria for Emergency Core Cooling Systems for Light Water Nuclear Power Reactors."

Additionally, the bulletin requested that licensees provide a written response describing the actions taken to resolve the long-term problems within 30 days of completion of these actions.

By letters dated July 8, 1988, September 30, 1988, and May 9, 1989, PGImE responded to Bulletin 88-04.

Your response provided the information identified in items (a) through (d), above.

Your response also described the long-term resolution actions and stated that these actions would be completed during the fourth refueling outage for each unit.

This outage is currently scheduled to begin in February,1991 for Unit 1 and September 1991 for Unit 2.

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D. Shiffer This fulfillsyour requirement in responding to Bulletin 88-04, and,completes NRC staff activities on TAC NOS.

69907 and 69908.

As discussed in NRC Bulletin 88-04, you should document and maintain for at, least two ye'ars an evaluation of your actions in responding to the bulletin.

These records may be subject to future auditing by the staff.

Ifyou",have any questions regarding this matter, please contact me.

li Sincerely, cc:

See next page

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Fg J

l pi Harry Rood, Senior Project Manager Project, Directorate V

Division of'eactor Projects -, III, IV, V and Special Projects DRSP/PD5 HRood 05/lC /89 D

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Mr. J.

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

Richard F. Locke, Esq.

Pacific Gas 8 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 Ms. Sandra A. Silver 660 Granite Creek Road Santa Cruz, California 95065 Mr.

W.

C. Gangloff Westinghouse Electric Corporation P. 0.

Box 355 Pittsburg, Pennsylvania 15230 Managing Editor San Luis Obis o Count Tele ram n

une 13P11Jo neon Avenue P. 0.

Box 112 San Luis Obispo, California 93406 Mr. Leland M. Gustafson, Manager Federal Relations Pacific Gas and Electric Company 1726 M Street, N. W.

Washington, DC 20036-4502 Dian M. Grueneich Marcia Preston Law Office of Dian M. Grueneich 380 Hayes Street, Suite 4 San Francisco, California 94102 NRC Resident Inspector Diablo Canyon Nuclear Power Plant c/o U.S. Nuclear Regulatory Commission P. 0.

Box 369 Avila Beach, California 93424 Mr. Dick Blakenburg Editor 8 Co-Publisher South County Publishing Company P. 0.

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

c/o Richard F. Locke, Esq.

Pacific Gas and Electric Company Post Office Box 7442 San Francisco, California 94120 Dr.

R.

B. Ferguson Sierra Club - Santa Lucia Chapter Rocky Canyon Star Route Creston, California 93432 Chairman San Luis Obispo County Board of Supervisors Room 270 County Government Center San Luis Obispo, California 93408 Director Energy Facilities Siting Division Energy Resources Conservation and Development Commission 1516 9th Street Sacramento, California 95814 Ms. Jacquelyn Wheeler 3033 Barranca Court San Luis Obispo, California 93401

7 C

Pacific Gas 5 Electric Company Diablo Canyon CC:

Ns. Laurie NcDermott, Coordinator Consumers Organized for Defense of Environmental Safety 731 Pacifi.c Street, Suite 42 San Luis Obispo, California 93401 Nr. Paul-Szalinski, Chief Radiological Health Branch State Department of Health Ser vices 714 P Street, Office Building 88 Sacramento, California 95814 Regional Administrator, Region V

U.S. Nuclear Regulatory Commission 1450 Naria Lane Suite 210 Walnut Creek, California 94596 Ns.

Nancy Culver 192 Luneta Street San Luis Obispo, California 93401 President California Public Utilities Coomission California State Building 350 NcAllister Street San Francisco, California 94102 Nichael N. Strumwasser, Esq.

Special Assistant Attorney General State of California Department of Justice 3580 Wilshire Boulevard, Room 800 Los Angeles, California 90010

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