ML13331B196
| ML13331B196 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 07/03/1989 |
| From: | Baskin K Southern California Edison Co |
| To: | NRC/IRM |
| Shared Package | |
| ML13331B197 | List: |
| References | |
| NUDOCS 8907100071 | |
| Download: ML13331B196 (1) | |
Text
Southern California Edison Company P.O. Box 8OO 2244 WALNUT GROVE AVENUE ROSEMEAD, CALIFORNIA 91770 KENNETH P. BASKIN TELEPHONE VICEPRESIDENT 3, 19898-302-140 U. S.
Nuclear Regulatory Commission Attention:
Document Control Desk Washington, D. C. 20555 Gentlemen:
Subject:
Docket No. 50-206 Amendment Application No. 172 San Onofre Nuclear Generating Station Unit 1 Enclosed is Amendment -Application No. 172 to the Provisional Operating License DPR-13. Amendment Application No. 172 consists of Proposed Change No. 210 which is a request to revise Appendix A, Technical Specifications, of Provisional Operating License DPR-13.
Proposed Change No. 210 is a request to revise Appendix A Technical Specifications to include the change to the Overpressure Mitigating System (OMS) setpoint to lift the PORV's. The OMS setpoint currently stated in Specification 3.20 does not agree with the heatup and cooldown limit curves of Specification 3.1.3. After consultation with the NRC, SCE placed administrative controls on the OMS setpoint to maintain the setpoint at a level consistent with the heatup and cooldown limit curves. The proposed OMS setpoint is based on the May 1986 revision of the heatup and cooldown pressure-temperature (P-T) limit curves and the current PORV opening time. The proposed OMS setpoint is calculated such that during the most limiting postulated overpressurization event, the system pressure will remain below the allowable P-T limits.
If you have any questions or desire additional information regarding this subject, please contact me.
Very truly yours, Enclosure cc:
J. B.Martin, Regional Administrator, NRC Region V F. R. Huey, NRC Senior Resident Inspector, San Onofre Units 1, 2 and 3 89r)07100071 E90703 PDR ADOCK 05000206 P