ML13317A433
| ML13317A433 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 10/28/1982 |
| From: | Crutchfield D Office of Nuclear Reactor Regulation |
| To: | Dietch R SOUTHERN CALIFORNIA EDISON CO. |
| Shared Package | |
| ML13317A434 | List: |
| References | |
| LSO5-82-10-079, LSO5-82-10-79, TAC-06836, TAC-6836, NUDOCS 8211290478 | |
| Download: ML13317A433 (3) | |
Text
DISTRIBUTION October 28, 1982 Docket)
NRC PDR Local PDR Docket No. 50-206 ORB Reading LSO5-82-10-079 NSIC DCrutchfield HSmith WPaulson Mr. R. Dietch OELD Vice President ELJordan Nuclear Engineering and Operations JMTaylor Southern California.Edison Company ACRS (10) 2244 Walnut Grove Avenue SEPB Post Office Box 800 Deagazio Rosemead, California 91770
Dear Mr. Dietch:
SUBJECT:
OVERPRESSURE.MITIGATION 'SYSTEM -
SAN ONOFRE UNIT NO. 1 Enclosed is the NRC staff's evaluation of the San Onofre Unit No. 1 overpressure mitigation system. The staff concludes that your system is acceptable contingent upon your proposing two Technic :1 Specifications in addition to those proposed by your letter dated October 20, 1980 (Proposed Change No. 71).
As discussed in the enclosed evaluation,.
these additional specifications would incorporate the following provisions:
1.* A channel function test to be performed prior to entering Mode 5 on cooldown and to require that the operability of the system e tested prior to returning to the "water solid" condition following a cold shutdown with the reactor coolant system depressurized; and
- 2. If the water level in the pressurizer is greater than 80%, or if the initial reactor coolant system pressure is greater than 400 psig, the temperature gradient between the secondary side of the steam generator and the reactor coolant system are to be verified to be no greater than 50oF before a CI reactor coolant pump is started.
We request that you submit these proposed technical specifications which have been discussed with members of your staff, within 45 days of receipt of this letter.
8211290478 21O PDR ADOCK 05000206 PDR OFFICE..................................
SURNAMEfr...............................
DATE.
NRC FORM 318 (10-80) NRCM 0240 OFFICIAL RECORD COPY USGPO:1981-335-960
Mr. October 28, 1982 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, Original signed by/
Dennis M. Crutchfield, Chief Operating Reactors Branch #5 Division of Licensing
Enclosure:
As stated ccw/enclosure:
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Mr. R. Dietch 3 -
October 28, 1982 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 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 215 Freemont Street San Francisco, California 94111 Robert H. Engelken, Regional Administrator Nuclear Regulatory Commission, Region V 1450 Maria Lane Walnut Creek, California 94596