ML13322A559
| ML13322A559 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 07/31/1979 |
| From: | James Drake SOUTHERN CALIFORNIA EDISON CO. |
| To: | Harold Denton NRC COMMISSION (OCM) |
| Shared Package | |
| ML13322A560 | List: |
| References | |
| NUDOCS 7908030182 | |
| Download: ML13322A559 (2) | |
Text
Southern California Edison Company P. 0. BOX 800 2244 WALNUT GROVE AVENUE J. H. DRAKE ROSEMEAD, CALIFORNIA 91770 TELEPHONE VICE PREsIoENT July 31, 1979 21 7225 Mr. H. R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Camission Washington, D.C.
20555 Gentlemen:
Subject:
Docket No. 50-206, Provisional Operating License No.
DPR-13 Amendment No. 81 San Onofre Nuclear Generating Station Unit 1 Enclosed are three executed and thirty-seven conformed copies of Amendment No.
81 in Docket No. 50-206. Amendment No. 81 consists of Proposed Change No. 82 to the Technical Specifications incorporated into the above-numbered license as Appendices A and B.
Proposed Change No. 82 is a request to revise Appendix B, Environmental Technical Specification 2.2.1, "Biocides".
The Proposed Change would modify the existing Technical Specifications to allow simultaneous chlorination of both halves of the condenser at San Onofre Unit 1 in order to perform fish impingement studies in accordance with Section 316(b) of the Federal Water Pollution Control Act.
As a part of these studies, elevation of the screenwell temperature to 90aF for 10 minutes is necessary to remove all fish from the screenwell at the outset of the sampling period each day. This procedure does not constitute a heat treatment cycle as described in Technical Specification 2.1.2 (Heat Treatment of Circulating Water System) and therefore will not be considered as part of the ten allowable heat treatment cycles per year. As described in Technical Specification 2.1.2, a heat treatment cycle consists of elevating the water temperature in both the intake and discharge conduits to a temperature which shall not exceed 1250F for more than 15 minutes and shall not exceed a maximum of 130 0F. This temperature may be maintained in each conduit for no more than 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />. Elevation of the screenwell temperature to 900F will result in elevation of the water temperature in the discharge conduit only.
W 790$030k\\$6?-
.C'4
Mr. H. R. Denton, Director
-2 It has been determined that the ideal time to conduct this study is during the latter part of July, 1979. Accordingly, it is respectfully requested that your review be completed and appropriate action taken in a timely manner.
Also enclosed is Southern California Edison Company's Check No.T010926 dated July 12, 1979, in the amount of $4,000.00 as required by 10CFR 170.22.
Very t y yours, Enclosure