ML13326A639
| ML13326A639 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 04/20/1981 |
| From: | Crutchfield D Office of Nuclear Reactor Regulation |
| To: | Dietch R Southern California Edison Co |
| Shared Package | |
| ML13326A640 | List: |
| References | |
| TAC-43464 LSO5-81-04-023, LSO5-81-4-23, NUDOCS 8105010550 | |
| Download: ML13326A639 (5) | |
Text
'4 Docket No. 50-206 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:
ORDER FOR MODIFICATION OF LICENSE CONCERNING PRIMARY COOLANT SYSTEM PRESSURE ISOLATION VALVES This letter transmits an Order for Modification of License which revises the Technical Specifications for Provisional Operating License No. DPR-13 for the San Onofre Nuclear Generating Station Unit No. 1. The change is a result of the information you provided in response to our 10 CFR 50.54(f) letter of February 23, 1980, regarding primary coolant system pressure isolation valves. Based upon our review of your response, as well as other previously docketed information, we have concluded that a WASH-1400 Event V valve configuration exists at your facility and that corrective action as defined in the attached Order is necessary.
Attached to the Order for Modification of License is the Technical Evaluation Report (TER) which supports the Order; and the plant Technical Specifications which will ensure public health and safety over the operating life of your facility. We are aware that there may be edi torial corrections to the attached TER.
Please note that the Technical Specifications correctly delineate the requirements for your facility.
In addition to Event V valve configurations, we are continuing our efforts to review other configurations located at high pressure/low pressure system boundaries for their potential risk contribution to an intersystem LOCA.
Therefore, further activity regarding the broader topic of intersystem LOCA's may be expected in the future.
8105010 550 OFFICEI SURNAMEO.
x...........................;.........................
9ATE NRC FORM 318 (10/80) NRCM 0240 O
R OFFIaCIAL R ECOR D COPY AUSGPO1980-329-824
I
-2 A copy of the enclosed Order is being filed with the Office of the Federal Register for publication.
Sincerely, Dennis M. Crutchfield, Chief Operating Reactors Branch #5 Division of Licensing
Enclosure:
Order for Modification of License DISTRIBUTION cc w/enclosure:
Docket See next page NRC PDR Local PDR ORB Reading HDenton ECase DEisenhut RPurple TNovak RTedesco GLainas JRoe HSmith SNowicki PPolk OELD OI&E (3)
TBarhart (4)
ACRS (10)
OPA (Clare Miles)
NSIC TERA Secretariat (SECY)
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OFFICIAL RECORD COPY USGPO: 1980-329-824-
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 April 20, 1981 Docket No. 50-206, LSO 5-81-04-023 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:
ORDER FOR MODIFICATION OF LICENSE CONCERNING PRIMARY COOLANT SYSTEM PRESSURE ISOLATION VALVES This letter transmits an Order for Modification of License which revises the Technical Specifications for Provisional Operating License No. DPR-13 for the San Onofre Nuclear Generating Station Unit No. 1. The change is a result of the information you provided.in response to our 10 CFR 50.54(f) letter of February 23, 1980,-regarding primary coolant system pressure isolation valves. Based upon our review of your response, as well as other previously docketed information, we have concluded that a WASH-1400 Event V valve configuration exists at your facility and that corrective action as defined in the attached Order is necessary.
Attached to the Order for Modification of License is the Technical Evaluation Report (TER) which supports the Order; and the plant Technical Specifications which will ensure public health and safety over the operating life of your facility. We are aware that there may be edi torial corrections to the attached TER. Please note that the Technical Specifications correctly delineate the requirements for your facility.
In addition to Event V valve configurations, we are continuing our efforts to review other configurations located at high pressure/low, pressure system boundaries for their potential risk contribution to an intersystem LOCA.
Therefore, further activity regarding the broader topic of intersystem LOCA's may be expected in the future.
-2 A copy of the enclosed Order is being filed with the Office of the Federal Register for publication.
Sincerely, Dennis M. Crutc
- ield, lef Operating Reactors Branch #5 Division of Licensing
Enclosure:
Order for Modification of License cc w/enclosure:
See next page
Mr. R. Dietch 3 -
April 20, 1981 cc Charles R. Kocher, Assistant Director, Criteria and Standards General Counsel Division Southern California Edison Company Office of Radiation Programs Post Office Box 800 (ANR-460)
Rosemead, California 91770 U. S. Environmental Protection Agency David R. Pigott Washington, D. C. 20460 Samuel B. Casey Chickering & Gregory U. S. Environmental Protection Three Embarcadero Center Agency Twenty-Third Floor Region IX Office San Francisco, California 94111 ATTN: EIS COORDINATOR 215 Freemont Street Jack E. Thomas San Francisco, California 94111 Harry B. Stoehr San Diego Gas & Electric Conpany P. 0. Box 1831 San Diego, California 92112 Resident Inspector c/o U. S. NRC P. 0. Box AA Oceanside, California 92054 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