ML13331B160
| ML13331B160 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 04/05/1989 |
| From: | Nandy F SOUTHERN CALIFORNIA EDISON CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 8904120429 | |
| Download: ML13331B160 (1) | |
Text
Southern California Edison Company P. 0. BOX 800 2244 WALNUT GROVE AVENUE ROSEMEAD, CALIFORNIA 91770 F. R. NANDY TELEPHONE MANAGER OF NUCLEAR LICENSING April 5, 1989 (81B) 302-1896 U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555 Gentlemen:
Subject:
Docket No. 50-206 Additional Information Regarding Amendment Application No. 156, Auxiliary Feedwater System Modifications San Onofre Nuclear Generating Station Unit 1 As part of the NRC review of SCE's Amendment Application No. 156 dated November 11, 1988, which modifies Technical Specifications relating to the Auxiliary Feedwater (AFW) System, the NRC staff requested SCE to verify that the appropriate Instrument Society of America (ISA) standard was used in the establishment of the flow switch setpoints for the interlocks between AFW Trains A and B. Based on the review of the design calculation that established these setpoints, SCE confirms that ISA Standard S67.04, "Setpoints for Nuclear Safety-Related Instrumentation Used In Nuclear Power Plants" was the standard that was used.
If you have any questions or require additional information, please let me know.
Very truly your cc: 3. B. Martin, Regional Administrator, NRC Region V F. R. Huey, NRC Senior Resident Inspector, San Onofre Units 1, 2, and 3 PCID