ML13317A795
| ML13317A795 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 12/18/1981 |
| From: | Crutchfield D Office of Nuclear Reactor Regulation |
| To: | Dietch R Southern California Edison Co |
| References | |
| TASK-15-10, TASK-15-15, TASK-RR LSO5-81-12-060, LSO5-81-12-60, NUDOCS 8112240120 | |
| Download: ML13317A795 (3) | |
Text
December 18, 1981 Docket No. 50-206 LS05 12-060 Mr. R. Dietch, Vice President Nuclear Engineering and Operations Southern California Edison Company 2244 Walnut Grove Avenue Post Office Box 800 Rosemead, California 91770
Dear Mr. Dietch:
SUBJECT:
SAN ONOFRE 1 - SEP TOPICS XV-10 AND XV-15, REQUEST FOR ADDITIONAL INFORMATION We have reviewed the topic assessments on the above topics that you submitted on July 1, 1981, and we find that additional information is needed to complete our safety evaluation.
Please provide the requested information within 30 days of receipt of this letter.
The reporting and/or recordkeeping requirements contained in this letter affect fewer.than ten respondents; therefore, OMB clearance is not required under P.L.96-511.
Sincerely, Dennis M. Crutchfield, Chief Operating Reactors Branch No. 5 Division of Licensing
Enclosure:
As stated 6O>
cc w/enclosure:
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NRC FORM 318 (10-80) NRCM 0240 OFFICIAL RECORD COPY USGPO:1981-335-960
Mr. R. Dietch cc Charles R. Kocher, Assistant General Counsel James Beoletto, Esquire Southern California Edison Company Post Office Box 800 Rosemead, California 91770 David*R. Pigott Orrick, Herrington & Sutcliffe 600 Montgomery Street San Francisco, California 94111 Harry B. Stoehr San Diego Gas & Electric Company P. 0. Box 1831 San Diego, California 92112 Resident Inspector/San Onofre NPS c/o U. S. NRC P. 0. Box 4329 San Clemente, California 92672 Mission Viejo Branch Library 24851 Chrisanta Drive Mission Viejo, California 92676 Mayor City of San Clemente San Clemente, California 92672 Chairman Board of Supervisors County of San Diego San Diego, California 92101 California Department of Health ATTN: Chief, Environmental Radiation Control Unit Radiological Health Section 714 P Street, Room 498 Sacramento, California 95814 U. S. Environmental Protection Agency Region IX Office ATTN: Regional Radiation Representative 216 Freemont Street San Francisco, California 94111
F9 SAN ONOFRE 1 REQUEST FOR ADDITIONAL INFORMATION TOPIC: XV-10, Boron Dilution
- 1. Please identify the time available for operator action to terminate an uncontrolled dilution following an alarm (such as rod insertion limits) for the following modes of reactor operation.
Reactor at power Reactor at hot standby Reactor at cold shutdown
- 2. Please provide an evaluation of uncontrolled boron dilution, including available alarms and time for operator action with the reactor in the refueling or hot shutdown mode.
TOPIC:
XV-15, Inadvertent Opening of a Pressurizer Safety/Relief Valve Please provide the results of your DNBR calculation for this event.