ML13317A415
| ML13317A415 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 11/16/1982 |
| From: | Krieger R SOUTHERN CALIFORNIA EDISON CO. |
| To: | Crutchfield D Office of Nuclear Reactor Regulation |
| References | |
| TASK-09-01, TASK-9-1, TASK-RR NUDOCS 8211230338 | |
| Download: ML13317A415 (1) | |
Text
Southern California Edison Company P. 0. BOX 800 2244 WALNUT GROVE AVENUE ROSEMEAD.
CALIFORNIA 91770 November 16, 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 IX-1, Fuel Storage
References:
A. Letter, R. W. Krieger, SCE, to D. M. Crutchfield, NRC, dated April 29, 1982 B. Letter, R. W. Krieger, SCE, to D. M. Crutchfield, NRC, dated September 1, 1982 The reference A letter forwarded SCE's draft Safety Assessment of the subject SEP Topic.
Reference B included additional information as requested by the regulatory staff. It was noted in the enclosure to refer ence 2 that due to the conservative design of the new fuel storage racks, the keff could be expected to be well below 0.98 even assuming optimum modera tion.
It was also indicated that the keff for the spent fuel racks would be maintained equal to or below 0.95 as our Technical Specification section 5.4 states that the spent fuel storage facility is designed such that k is main tained at < 0.9.
We have performed an analysis to verify these values of keff for new and spent fuel storage.
The results show that the maximum keff for the new fuel storage racks for the worst case abnormal conditions with all uncer tainties including optimum moderation is 0.843. For the spent fuel racks assuming the worst case abnormal conditions including water temperature varia tion from 680F to 212oF with non-borated water the keff is calculated to be 0.896.
I trust this information completes SCE's input on this topic.
Please contact me if you require additional information.
Very tru1
- yours, R. W. Krieg Supervising ngineer San Onofre Unit 1 Licensing 9211230338 921I16 PDR ADOCK 05000206 P