ML13331A465
| ML13331A465 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 07/31/1990 |
| From: | Tatum J Office of Nuclear Reactor Regulation |
| To: | Ray H Southern California Edison Co |
| Shared Package | |
| ML13331A466 | List: |
| References | |
| TAC-72163 IEB-88-011, IEB-88-11, NUDOCS 9008030208 | |
| Download: ML13331A465 (3) | |
Text
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 July 31, 1990 Docket No.
50-206 Mr. Harold B. Ray Senior Vice President Southern California Edison Co.
Irvine Operations Center 23 Parker Street Irvine, California 92718
Dear Mr. Ray:
SUBJECT:
NRC BULLETIN NO.
88-11, "PRESSURIZER SURGE LINE THERMAL STRATIFICATION" - EVALUATION OF WESTINGHOUSE OWNERS GROUP BOUNDING ANALYSIS (TAC NO.
72163)
By letter dated June 1, 1989, Southern California Edison (SCE)
Company responded to Item 1.b of NRC Bulletin No. 88-11, "Pressurizer Surge Line Thermal Stratifi cation."
The letter provided your justification for continued operation (JCO) while a plant specific analysis is being completed for San Onofre Unit 1 to fully address this issue.
Your JCO is based on a bounding analysis that was performed by the Westinghouse Owners Group (WOG) and documented in WCAP-12277/12278 dated June 15, 1988, which concluded that the integrity of the pressurizer surge line (PSL) for Westinghouse facilities is adequate for at least ten additional heatup-cooldown cycles.
In your letter, you indicated that the WOG analysis is applicable to the San Onofre Unit 1 PSL.
Additionally, you indicated in your JCO that you will provide your response to Item 1(d) of NRC Bulletin 88-11 by January 1991.
The staff has completed its review of the WOG bounding analysis and concludes that there are no short-term safety concerns associated with the thermal strati fication effects on the PSL pending your January 1991 submittal.
Although our evaluation suggests that licensees submit JCOs that make reference to our evaluation, we recognize that you have already submitted your JCO for our review and a revision to your June 1 submittal is not necessary simply for the purpose of referencing our evaluation.
For your information, a copy of the evaluation which was sent to the WOG is enclosed.
9003030208 90C0)731 PDR ADOCKL 05000206 0
I='D C
0 0
Mr. Harold July 31, 1990 The staff will further assess the conformance of your PSL to applicable codes and regulatory requirements for 40-year plant life when your response to Item 1.d of the bulletin is submitted.
Sincerely, OrigiAl stgned BY James E. Tatum, Project Manager Project DirectorateV Division of Reactor Projects -
- III, IV, V and Special Projects Office of Nuclear Reactor Regulation
Enclosure:
As stated cc w/enclosure:
See next page DISTRIBUTION Docket File NRC & Local PDR PD5 Reading D. Crutchfield B. Boger J. Larkins D. Foster J.Tatum OGC-Rockville E. Jordan ACRS (10)
PD5 Plant File T. Chan P. Johnson, RV C. Caldwell, RV S. Hou, 7E23 S. Richards, RV OFC
- PD5/LA
/PM ID NAME :DFoster tum:sg JLarkins DATE :O7I31I901
)6/75/I90 07/31/90 DOCUMENT NAME:
[SO 72163]
Mr. Harold B. Ray San Onofre Nuclear Generating Southern California Edison Company Station, Unit No. 1 cc David R. Pigott 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 U.S. Nuclear Regulatory Commission 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 U.S. NRC P. 0. Box 4329 San Clemente, California 92672 Mayor City of San Clemente 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 Management Unit Environmental Management Branch State Department of Health Services 714 P Street, Room 616 Sacramento, California 95814 Mr. Don Womeldorf Chief, Environmental Management California Department of Health 714 P Street, Room 616 Sacramento, California 95814