ML13309B270
| ML13309B270 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 05/23/1983 |
| From: | Knighton G Office of Nuclear Reactor Regulation |
| To: | Dietch R, Holcombe J San Diego Gas & Electric Co, Southern California Edison Co |
| References | |
| NUDOCS 8306030062 | |
| Download: ML13309B270 (4) | |
Text
MAY 2 3 193 Docket No.:
509-361 Mr. Robert Dietch Mr. James C. Holcombe Vice President San Diego Gas & Electric Company Southern California Edison Company 101 Ash Street 2244 Walnut Grove Avenue Post Office Box 1831 Post Office Box 800 San Diego, California 92112 Rosemead, California 91770 Gentlemen:
Subject:
San Onofre 2 Startup Testing With regard to our recent telephone discussion of the San Onofre Unit 2 Startup Testing Program, we have evaluated your proposal to conduct the Xenon Oscillation Control Test (FSAR Section 14.2.12.98) at 50% power, versus 65% as specified in Table 14.2-2 of the FSAR. This test is the only test currently specified for 65%. You have indicated that the elimination of the 65% power test plateau would have significant economic benefits for SCE.
The Xenon Oscillation Test is a test of the capability of the part length control rods to control a xenon oscillation. The test is not a test of any safety function nor do part length rods perform a safety function. Should a xenon oscillation occur which is incapable of being controlled by part length rods, the axial shape index as computed by the core operating limit supervisory systems or core protection calculators will be exceeded requiring a power reduction.
In addition, the Xenon Oscillation Test is a test only of systems, components, or features which:
(a) will not be relied upon for safe shutdown and cooldown of the reactor under normal plant conditions and for maintaing the reactor in a safe condition for an extended shutdown period; (b) will not be relied upon for safe shutdown and cooldown of the reactor under transient (infrequent or moderately frequent events) conditions and postulated accident conditions, and for maintaining the reactor in a safe condition for an extended shutdown period following such conditions; (c) will not be relied upon for establishing conformance with safety limits or limiting conditions for operation that will be included in the facility technical specifications; (d) are not classified as engineered safety features and will not be relied upon to support or assure the operations of engineered safety features within design limits; 8306030062 830523 PDR ADOCK 05000361 P
PDR SURNAME......................
18 (10-80) NR.M 0240 OFFICIAL RECOR1............
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NRC FORM 318 (10-80) NRCM 0240 OFFICIAL RECORD COPY USGPO: 1981-335-960
-2 (e) are not assumed to function or for which credit is taken in the accident analysis for the facility (as described in the Final Safety Analysis Report)
(f) will not be utilized to processsy store, control, or limit the release of radiative materials.
Therefore, we conclude that a reduction in.power level from 65% to 50% for the Xenon Oscillation Test is acceptable.
Our recent discussions have also covered the possiblity of deferring the natural circulation tests Bl, B2, and 83 until later in the startup test program than originally planned. Since this would make the tests more nearly respresentative of the plant operating conditions later in life, and since no adverse safety implications have been identified, we find such deferral acceptable, provided that these tests are conducted prior to the completion of the San Onofre Unit 2 Startup Test Program.
Original signid byi\\
Geore.W. Knighton George W. Knighton, Chief Licensing Branch No. 3 Divison of Licensing cc:
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NRC FORM 318 (10-80) NRCM 0240 OFFICIAL RECORD COPY USGPO: 1981-335-960
San Onofre Mr. Robert Dietch Vice President Southern California Edison Company 2244 Walnut Grove Avenue P. 0. Box 800 Rosemead, California 91770 Mr. James C. Holcombe San Diego Gas & Electric Company 101 Ash Street San Diego, California 92112 cc:
Charles R. Kocher, Esq.
Mr. Mark Medford James A. Beoletto, Esq.
Southern California Edison Company Southern California Edison Company 2244 Walnut Grove Avenue 2244 Walnut Grove Avenue P. 0. Box 800 P. 0. Box 800 Rosemead, California 91770 Rosemead, California 91770 Mr. Henry Peters Orrick, Herrington & Sutcliffe San Di.ego Gas & Electric Company ATTN:
David R. Pigott, Esq.
P. 0. Box 1831 600 Montgomery Street San Diego, California 92112 San Francisco, California 94111 Ms.
Lyn Harri.s Hicks Mr. George Caravalho Advocate for GUARD City Manager 3908 Calle Ariana City of San Clemente San Clemente, California 92672 100 Avenido Presidio San Clemente, California 92672 Richard J. Wharton, Esq.
University of San Diego School of Law Alan R. Watts, Esq.
Environmental Law Clinic Rourke & Woodruff San Diego, California 92110 Suite 1020 1055 North Main Street Phyllis.M. Gallagher, Esq.
Santa Ana, California 92701 Suite 222 1695 West Crescent Avenue Lawrence Q.
Garci.a, Esq.
Anaheim, California 92701 California Public Utilities Commission 5066 State Building Mr. A. S. Carstens San Francisco, California 94102 2071 Caminito Circulo Norte Mt. La Jolla, California 92037 Mr. V. C. Hall Combustion Engineering, Inc.
Charles E. McClung, Jr., Esq.
1000 Prospect Hill Road Attorney at Law Windsor, Connecticut 060.95 24012 Calle de la Plata/Suite 330 Laguna Hills, California 92653 Mr. S. McClusky Bechtel Power Corporation Resident Inspector, San Onofre/NPS P. 0. Box 60860, Terminal Annex c/o U.S. Nuclear Regulator' Commission Los Angeles, California 90060 P. 0. Box 4329 San Clemente, California 92672 Mr. Dennis F. Kirsch U.S. Nucl'ear Regulatory Comm. -
Reg. V Regional Administrator-Region V/NRC 1450 Maria Lane, Suite 210
.1450 Maria Lane/Suite 210 Walnut Creek, California 94596 Walnut Creek, California 94596
SAN ONOFRE Mr. C. B. Brinkman Combustion Engineering, Inc.
7910 Woodmont Avenue Bethesda, Maryland 20814