ML13317A399
| ML13317A399 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 10/19/1982 |
| From: | Krieger R Southern California Edison Co |
| To: | Crutchfield D Office of Nuclear Reactor Regulation |
| References | |
| TASK-02-02.A, TASK-03-02, TASK-03-04.A, TASK-2-2.A, TASK-3-2, TASK-3-4.A, TASK-RR NUDOCS 8211100265 | |
| Download: ML13317A399 (1) | |
Text
Southern California Edison Company P.0 BOX 800 2244 WALNUT GROVE AVENUE ROSEMEAD, CALIFORNIA 91770 October 19, 1982 Director, Office of Nuclear Reactor Regulation Attention:
D. M. Crutchfield, Chief Operating Reactors Branch No. 5 Division of Licensing U. S. Nuclear Regulatory Commission Washington, D.C.
20555 Gentlemen:
Subject:
Docket No. 50-206, SEP Topic:
111-2, Wind and Tornado Loadings III-4.A, Tornado Missiles San Onofre Nuclear Generating Station Unit 1
References:
A. Letter from R. W. Krieger, SCE, to D. M. Crutchfield, NRC, dated May 4, 1982 B. Letter from Walt Paulson, NRC, to R. Dietch, SCE, dated July 15, 1982 C. Letter from R. W. Krieger, SCE, to D. M. Crutchfield, NRC, dated August 25, 1982 Reference A provided our draft Safety Assessments of the subject SEP topics. Reference B was a request for additional information on specific structures and components. Reference C provided the requested information with the exception of an evaluation of the loading capability of certain components which are exposed to the atmosphere. We indicated that information concerning the capability of these components could be provided by October 4, 1982. The purpose of this letter is to inform you that we will be delaying the evaluation of these components pending the outcome of SEP Topic II-2.A, Severe Weather Phenomena, during the integrated safety assessment for our facility.
As indicated in Reference A, the design basis tornado used in the reevaluation of San Onofre Unit 1 is considered overly conservative.
Selection of an appropriate tornado during the integrated assessment will allow a more definitive and realistic analysis.
If you have any questions on this matter, please contact me.
Sincerely, 6211100265 821019 PDR ADOCK 05000206 P
PDR L
R. W. Krieger Supervising Engineer San Onofre Unit 1 Licensing