ML13326A857
| ML13326A857 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 04/24/1992 |
| From: | Zimmerman R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Krieger R SOUTHERN CALIFORNIA EDISON CO. |
| References | |
| NUDOCS 9205060073 | |
| Download: ML13326A857 (3) | |
Text
o UNITED STATES NUCLEAR REGULATORY COMMISSION REGION V 1450 MARIA LANE WALNUT CREEK, CALIFORNIA 94596-5368 Docket No. 50-206 April 24, 1992 Southern California Edison Company San Onofre Nuclear Generating Station P.O. Box 128 San Clemente, California 92674-0128 Attention: Mr. R. W. Krieger, Station Manager Gentlemen:
Subject:
Temporary Waiver of Compliance Regarding San Onofre Unit 1 Technical Specification 3.3.1 In your letter dated April 20, 1992 and in discussions with the NRC staff on April 23, 1992, you requested temporary relief from Technical Specification (TS) 3.3.1 to allow continued operation of Unit 1 while effecting repairs on the valve position indication for SV-2900. TS 3.3.1 requires that both trains of the safety injection system (SIS) be operable during power operations. The plant must be shutdown in accordance with TS 3.0.3 if this condition is not met. You requested a 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> waiver of compliance from TS 3.3.1 to allow repairs on SV-2900 valve position indication.
The following compensatory actions will be in effect during the waiver period:
- 2) SV-2900 and all other components of the affected train will be maintained functional and capable of automatic initiation, barring unforseen problems, during the repair period.
You concluded that there were no significant hazards resulting from granting of the waiver request because one train of SIS will be capable of performing its safety function during the waiver period and therefore the potential inoperability of the other train would not significantly increase the plant risk.
Based on the above and based on discussions with the NRC Office of Nuclear Reactor Regulation, a temporary waiver of compliance for TS 3.3.1, related only to the requirement to enter TS 3.0.3 if the valve position indication for SV-2900 is not operable, is granted for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. As discussed with you on April 23, 1992, you agreed that this period should be sufficient to complete 9205060073 920424 PDR ADOCK 05000206 P
2 the repairs and perform necessary testing. If other functionality problems are encountered with SV-2900 or any other SIS components, all other applicable TS requirements apply..
This waiver begins at 8:00 a.m. on-April 27, 1992; it expires when the valve is successfully repaired and compliance with TS 3.3.1 is restored, but no later than 8:00 a.m. on April 28, 1992.
All other TS requirements remain in effect.
Sincerely R.P. Zimmerman, Director Division of Reactor Safety and Projects cc:
H. Ray, SCE.
H. Morgan, SCE
3 bcc: J. Martin, RV T. Murley, NRR J. Taylor, EDO J. Sniezek, DEDO J. Lieberman, OE R. Myer, OEDO G. Kalman, NRR J. Partlow, NRR J. Gagliardo, NRR T. Quay, NRR M. Fields, NRR M. Virgilio, NRR B. Boger, NRR Technical Assistant, DRP I/II, NRR REGION V TSundsmo HWong SRichards 4/2,3/92 4/2,-3/92 4/2- /92 4/ //92 ESTCOY
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