ML13317A527
| ML13317A527 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 03/01/1983 |
| From: | Krieger R Southern California Edison Co |
| To: | Crutchfield D Office of Nuclear Reactor Regulation |
| References | |
| TASK-03-07.D, TASK-3-7.D, TASK-RR NUDOCS 8303070084 | |
| Download: ML13317A527 (1) | |
Text
Southern California Edison Company P.0 BOX 800 2244 WALNUT GROVE AVENUE ROSEMEAD, CALIFORNIA 91770 March 1, 1983 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:
Systematic Evaluation Program Topic III-7.D, Containment Structural Integrity Test San Onofre Nuclear Generating Station Unit 1
References:
A. Letter W. A. Paulson (NRC) to R. Dietch (SCE), April 23, 1982, SEP Topic III-7.D, Containment Structure Integrity Test B. Letter, K. P. Baskin (SCE) to Attention: D. M. Crutchfield (NRC), November 18, 1982, Environmental Qualification C. Letter K. P. Baskin (SCE) to Attention: D. M. Crutchfield (NRC), June 10, 1980, Automatic Initiation of Auxiliary Feedwater System, enclosed report This is in response to the NRC's final evaluation of SEP Topic III-7.D, which was transmitted to us by Reference A. We have one significant comment, as follows:
The most recent pressure, temperature values relating to the design basis main steam line break (MSLB) accident are:
53.3 psig and 391.5 0F.
These values were transmitted to the NRC with Reference B, under a different subject. The NRC's evaluation of SEP Topic III-7.0 should be rewritten to reflect the new peak pressure. It is considered that the recalculated pressure does not affect the conclusions of SEP Topic III-7.D, since the containment was successfully tested at 53.4 psig prior to operation.
Reference C provides a detailed discussion of the actual design capability of the containment sphere.
Should you have any questions, please contact the undersigned.
y trul yours, W. Krieger (Supervising En ineer g13066 09 030 San Onofre Unit 1 Licensing
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