ML13333A371
| ML13333A371 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 05/17/1979 |
| From: | Haynes J Southern California Edison Co |
| To: | Ziemann D Office of Nuclear Reactor Regulation |
| References | |
| TASK-06-10.B, TASK-6-10.B, TASK-RR NUDOCS 7906060283 | |
| Download: ML13333A371 (2) | |
Text
Southern California Edison Company P.O. BOX 800 2244 WALNUT GROVE AVENUE ROSEMEAD, CALIFORNIA 91770 May 17, 1979 Director of Nuclear Reactor Regulation Attention:
Mr. D. L. Ziemann, Chief Operating Reactors, Branch #2 Division of Operating Reactors U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Gentlemen:
Subject:
Docket No. 50-206 Systematic Evaluation Program (SEP)
San Onofre Nuclear Generating Station, Unit 1 Your letter of April 18, 1979 forwarded a draft assessment of SEP Topic VI-10.B, Shared Engineered Safety Features, Onsite Emergency Power and Services Systems for Multiple Unit Stations (Non EI&C Related).
That letter requested that Southern California Edison (SCE) examine the evaluation and respond either by confirming that the facts are correct, or by identifying any errors.
SCE has completed its review and comments are enclosed.
If you have any questions regarding the enclosed, please contact me.
Very truly yours, J. G. Haynes Chief of Nuclear Engineering Enclosure 0lo(/
COMMENTS ON SEP TOPIC VI-10.B, SHARED SYSTEMS
- 1. San Onofre Unit 1 shares with Units 2 and 3 not only the service water reservoir but also its associated piping and components. The reservoir, piping and components perform a safety related function for Unit 1, but are used only for fire protection for Units 2 and 3.
Therefore, it is suggested that the second full sentence on Page 4 be revised as follows:
"Based on this review, we identified the Service Water Reservoir (SWR) and its associated piping and components as the only shared components which could affect the safe shutdown capability of Unit 1."