ML13302B431
| ML13302B431 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 10/10/1991 |
| From: | Zimmerman R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Krieger R SOUTHERN CALIFORNIA EDISON CO. |
| References | |
| NUDOCS 9110250042 | |
| Download: ML13302B431 (3) | |
Text
oq UNITED STATES NUCLEAR REGULATORY COMMISSION REGION V 1450 MARIA LANE, SUITE 210 0
0 WALNUT CREEK, CALIFORNIA 94596-538 October 10, 1991 Locket No. 50-361' Southern California Edison Company
. Box 128, "tan Clemente, California 92672 Attention:
Mr. R. W. Krieger, Station Manager Gentlemen:
Subject:
REGION V WAIVER OF COMPLIANCE WITH SAN ONOFRE UNIT 2 TECHNICAL SPECIFICATIONS (TS)'3.9.8.1 and 3.9.8.2 In discussions between the Southern California Edison (SCE) staff and the NRC on October 10, 1991, and as described in your letter dated October 9, 1991, you requested a temporary waiver of compliance from TS 3.9.8.1 and 3.9.8.2 in order to perform full flow surveillance testing of the Low Pressure Safety Injection (LPSI) pump.suction.header check valves without having to offload the reactor core to the spent fuel.pool. To ensure that no significant hazard will occur, your letter of October 9, 1991 stated that:
The refueling water storage tank boron concentration will be maintained greater than or equal to the reactor coolant system boron concentration.
The period during which shutdown cooling flow will be secured will be minimized.
Containment penetrations with direct access to the outside atmosphere will be closed.
o The reactor coolant system temperature will be maintained below 1200 F.
During a subsequent telephone discussion with you and your staff on October 10, 1991, you further stated that:
o Shutdown cooling flow would not be secured during any one period, for greater than 30 minutes.
0 Water level would not be lowered to less than 18 feet 9 inches above the reactor vessel flange.
Based on the information presented in your written request, and based on the conditions stated above, a temporary waiver was verbally approved at approximately 2:00 p.m. on October 10, 1991, to commence at 3:00 p.m. on October 10, 1991, and to expire 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> later or at the completion of 9110250042 911010 PDR ADOCK 05000361 P
October 10, 1991.
testing, whichever occurs first. This letter confirms that waiver. We note that the need for this waiver could have been avoided had scheduling ofthe surveillance testing been more carefully planned, however the waiver is being granted to allow testing without incurring the risk associated with offload of the reactor core.
Sincerely, R. P. i imerman, Director Divisi n of Reactor Safety and Projects cc:
H. B. Ray, Senior Vice President, Nuclear H. E. Morgan, Vice President and Station Manager State of California October 10, 1991 testing, whichever occurs first.
This letter confirms that waiver. We note that the need for this waiver could have been avoided had scheduling of the surveillance testing been more carefully planned, however the waiver is being granted to allow testing without incurring the risk associated with offload of the reactor core.
Sincerely, R. P. Zimmerman, Director Division of Reactor Safety and Projects cc:
H. B. Ray, Senior Vice President, Nuclear H. E. Morgan, Vice President and Station Manager State of California bcc: J. Partlow, NRR B. Boger,.NRR M. Virgilio, NRR T. Quay, NRR PJots
- jb SRichards MVirgilio, NRR RZimmerman 10/(0/91 10//o/91 10/0/91 10/p/91 EST COPY J REQUEST COPY.
EST COPY R UEST COPYJ ES)/ NO YES /
NO YES)/ NO (YES) /
NO
[ SED TO DCS ]
NO