ML13326A825
| ML13326A825 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 10/28/1991 |
| From: | Zimmerman R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Krieger R SOUTHERN CALIFORNIA EDISON CO. |
| References | |
| NUDOCS 9111060009 | |
| Download: ML13326A825 (3) | |
Text
o UNITED STATES NUCLEAR REGULATORY COMMISSION REGION V 1460 MARIA LANE, SUITE 210 WALNUT CREEK, CALIFORNIA 94596-5368 00T 2" 3 g Docket Nos.
50-206 and 50-362 Southern California Edison Company P. 0. Box 128 San Clemente, California 92672 Attention:
Mr. R. W. Krieger, Station Manager Gentlemen:
Subject:
Temporary Waiver of Compliance from San Onofre Unit 1 Technical Specification 4.7 and San Onofre Unit 3 Technical Specification 4.4.9, Inservice Inspection of Reactor Coolant Pump Flywheels This letter documents the granting of a temporary waiver of compliance to the Southern California Edison (SCE) Company for San Onofre Nuclear Generating Station Unit 1, Operating License DPR-13; and Unit-3, Operating License NPF-15.. The waiver-of compliance was granted verbally at 3:50 p.m. (PDT) on October 25, 1991 based-upon SCE's oral request for the waiver during a telephone conference call.
A followup written waiver request was submitted by SCE on October 26, 1991.
The waiver involves Technical Specification (TS) surveillance requirements to perform inservice inspections of the reactor.coolant pump (RCP) flywheels at intervals of.approximately three years. This requirement is contained in Unit 1 TS 4.7, "Inservice Inspection Requirements," and in Unit 3 TS 4.4.9, "Reactor Coolant System - Structural Integrity."
These inspections were last performed on Unit 1 RCPs B and C in December 1985, on Unit 1 RCP A in 1988, and on all Unit 3 RCPs in February 1987.
Since these TSs do not specifically address the operability requirements for RCP flywheels, your staff considered TS 3.0.3 to be applicable for both Units 1 and 3. TS 3.0.3 for both units requires the units to be placed in Mode 3 within six hours. In addition, Unit 1 TS 3.1.2, "Reactor Coolant System - Operational Components," and Unit 3 TS 3.4.1.1, "Reactor Coolant Loops and Coolant Circulation," which require all RCPs to be operable, were considered applicable. Your letter noted that, although all RCPs remained in operation, each RCP must fully satisfy all surveillance requirements to be considered operable. With an inoperable RCP, Unit 1 TS 3.1.2 and Unit 3 TS 3.4.1.1 require that the units be placed in Mode 3 within one hour.
Shutdown of both Units in accordance with the Action requirements of Unit 1 TS 3.0.3 and TS 3.1.2, and Unit 3 TS 3.0.3 and TS 3.4.1.1, was delayed for a period not to exceed 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> in accordance with TS 4.0.3 for-both units.
This TS permits such.a delay to allow the completion of surveillances.
911106000-/ 911029 PDR ADOC 05000206 O
P
.PD
-2 Region V, with NRR concurrence, concluded after reviewing your request that a temporary waiver of compliance from the Unit 1 TS 4.7 and Unit 3 TS 4.4.9 requirements for inspections of the RCP flywheels will not negatively impact public health and safety. Accordingly, a temporary waiver was verbally granted, to remain in effect until 73:50 p.m. (PST) on October 30, 1991.
During that period, the NRC will consider whether to extend this waiver until December 1, 1991, as requested in your letter.
This approval of your requested temporary waiver of compliance is conditioned upon the implementation of the compensatory measures described in your letter dated October 26, 1991.
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 Site Manager State of California
-3 bcc:
J. Martin, RV B. Faulkenberry, RV R. Zimmerman, RV K. Perkins, RV S. Richards, RV P. Johnson, RV K. Johnston, RV C. Caldwell, SONGS T. Murley, NRR J. Partlow, NRR M. Virgilio, NRR T. Quay, NRR G. Kalman, NRR L. Kokajko, NRR A. Mendiola, NRR M. Blume, RV A. Johnson, RV REGION KJohn VP n-SRichards ilio, NRR RZimmerman 10/28/ 1 10/
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