ML13317B277
| ML13317B277 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 01/24/1991 |
| From: | Kalman G Office of Nuclear Reactor Regulation |
| To: | Ray H Southern California Edison Co |
| References | |
| NUDOCS 9101310076 | |
| Download: ML13317B277 (2) | |
Text
January 24, 19910 Docket No. 50-206 Mr. Harold B. Ray Senior Vice President Southern California Edison Company Irvine Operations Center 23 Parker Street Irvine, California 92718
Dear Mr. Ray:
SUBJECT:
INSERVICE TESTING OF AUXILIARY FEEDWATER PUMPS We have reviewed your January 3, 1991 submittal describing proposed changes to the inservice testing (IST) program for the auxiliary feedwater (AFW) pumps.
The proposed changes involve the steam driven AFW pump, G10, and the duration between pump tests.
The existing IST program requires AFW pump G10 to be tested in modes 3, 4, or 5.
There is insufficient steam available in these modes to achieve stable pump operation for test purposes. You propose to perform the test in mode 1 at approximately 20 percent reactor power. We concur that 20 percent power appears to be an appropriate precondition for the pump test.
You also propose to redefine the maximum interval between pump tests from 90 to 92 days for the sake of consistency with other quarterly intervals in the IST program. There is apparent benefit for proceeding with both of the described changes.
In a letter dated May 18, 1990, we transmitted a safety evaluation report to you that included an evaluation of existing AFW testing procedures. The currently proposed changes fall within the scope of this evaluation and the general guidance for IST programs. Accordingly, we concur with the actions proposed in your letter dated January 3, 1991.
Sincerely, George Kalman, Senior Project Manager Project Directorate V PDR ADOCK 05000206 Division of Reactor Projects III/IV/V P
PDR Office of Nuclear Reactor Regulation cc: See next page DISTRIBUTION Docket File NRC & LPDRs PD5 Reading BBoger MVirgilio DFoster GKalman TSullivan OGC EJordan ACRS (10)
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Mr. Harold B. Ray San Onofre Nuclear Generating Southern California Edison Company Station, Unit No. 1 cc:
David R. Pigott, Esq.
Mr. Richard J. Kosiba, Project Manager Orrick, Herrington & Sutcliffe Bechtel Power Corporation 600 Montgomery Street 12440 E. Imperial Highway San Francisco, California 94111 Norwalk, California 90650 Mr. Robert G. Lacy Mr. Phil Johnson Manager, Nuclear Department U.S. Nuclear Regulatory Comission San Diego Gas & Electric Company Region V P. 0. Box 1831 1450 Maria Lane, Suite 210 San Diego, California 92112 Walnut Creek, California 94596 Resident Inspector, San Onofre NPS c/o U.S. Nuclear Regulatory Commission P. 0. Box 4329 San Clemente, California 92672 Mayor City of San Clemente 100 Avenida Presidio San Clemente, California 92672 Chairman, Board of Supervisors County of San Diego 1600 Pacific Highway, Room 335 San Diego, California 92101 Regional Administrator, Region V U.S. Nuclear Regulatory Commission 1450 Maria Lane, Suite 210 Walnut Creek, California 94596 Mr. John Hickman Senior Health Physicist Environmental Radioactive Mgmt. Unit Environmental Management Branch State Department of Health Services 714 P Street, Room 616 Sacramento, California 95814 Mr. Don J. Womeldorf Chief, Environmental Management Branch California Department of Health Services 714 P Street, Room 616 Sacramento, California 95814 (10)