ML13304A475
| ML13304A475 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 05/08/1990 |
| From: | Kokajko L Office of Nuclear Reactor Regulation |
| To: | Cotton G, Ray H SAN DIEGO GAS & ELECTRIC CO., SOUTHERN CALIFORNIA EDISON CO. |
| References | |
| NUDOCS 9005150015 | |
| Download: ML13304A475 (4) | |
Text
SREG UNITED STATES C,
NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 May 8, 1990 Docket Nos. 50-361 and 50-362 Mr. Harold B. Ray Mr. Gary D. Cotton Vice President Senior Vice President Southern California Edison Co.
Engineering and Operations Irvine Operations Center San Diego Gas & Electric Co.
23 Parker Street 101 Ash Street Irvine, California 92718 San Diego, California 92112 Gentlemen:
SUBJECT:
CLARIFICATIONS TO THE SONGS 2/3 SPENT FUEL POOL RERACKING SAFETY EVALUATION DATED MAY 1, 1990 On May 7, 1990, Mr. Derrick Mercurio of your staff contacted me regarding the safety evaluation (SE) for the San Onofre 2/3 spent fuel pool expansion. This telephone conversation dealt with mostly editorial, typographical, and minor interpretations or clarifications to the safety evaluation, each being considered on its merits as not being substantial enough to warrant a formal change in the safety evaluation.
However, there are two items which require further clarification. As before, the conclusions of the safety evaluation do not change as a result of this letter. They are provided to ensure that there are no misunderstandings related to certain aspects of the spent fuel pool reracking activities.
The first item concerns section 2.5.1 on page 20 of the SE, specifically spent fuel pool bulk coolant temperatures during a full core unload.
According to Standard Review Plan Section 9.1.3 and as stated in your Reracking Report, a single active failure need not be considered for the abnormal condition of a full core unload; but the temperature of the water should be kept below boiling and the liquid level maintained with normal systems in operation during this condition. In your Reracking Report, you state that during this condition, assuming no single active failure and a postulated heat load of 51.3 MBTU/HR for a full core unload condition, the bulk coolant temperatures would be 156 degrees F. Since this is in accordance with the Standard Review Plan, this is acceptable.
The second item concerns section 2.5.2 on page 25 of the SE specifically in regard to the cask handling crane qualified as a single failure proof device.
You state in your Reracking Report that the cask handling crane is not single failure proof and other design features prevent the cover from falling into the pool.
It is understood that the cask handling crane is not a single failure proof device, although there are significant margins in the cask handling crane design to carry out this operation. It is also understood that the cask pool cover special lifting device has been designed to prevent the cover from falling onto the fuel, and the cover, by its design, is precluded from falling into the cask pool.
Based upon the above information, this is acceptable.
IPDR ADCK 05000361 P
Messr Ray and Cotton May 8, 1990 If there are any questions concerning this or any other matter related to the safety evaluation for the San Onofre 2/3 spent fuel pool expansion, please do not hesitate to contact me.
Sincerely, Lawrence E. Kokajko, Project Manager Project Directorate V Division of Reactor Projects -
- III, IV, V and Special Projects Office of Nuclear Reactor Regulation cc:
See next page
Messr Ray and Cotton San Onofre Nuclear Generating Southern California Edison Company Station, Units 2 and 3 cc:
Charles R. Kocher, Esq.
Mr. Richard J. Kosiba, Project Manager James A. Beoletto, Esq.
Bechtel Power Corporation Southern California Edison Company 12440 E. Imperial Highway Irvine Operations Center Norwalk, California 90060 23 Parker Irvine, California 92718 Mr. Robert G. Lacy Manager, Nuclear Department Orrick, Herrington & Sutcliffe San Diego Gas & Electric Company ATTN:
David R. Pigott, Esq.
P. 0. Box 1831 600 Montgomery Street San Diego, California 92112 San Francisco, California 94111 Mr. John Hickman Alan R. Watts, Esq.
Senior Health Physicist Rourke & Woodruff Environmental Radioactive Mgmt. Unit 701 S. Parker St. No. 7000 Environmental Management Branch Orange, California 92668-4702 State Department of Health Services 714 P Street, Room 616 Mr. Sherwin Harris Resource Project Manager Public Utilities Department Resident Inspector, San Onofre NPS City of Riverside do U.S. Nuclear Regulatory Commission 3900 Main Street Post Office Box 4329 Riverside, California 92522 San Clemente, California 92672 Mr. Charles B. Brinkman Mayor Combustion Engineering, Inc.
City of San Clemente 12300 Twinbrook Parkway, Suite 330 San Clemente, California 92672 Rockville, Maryland 20852 Regional Administrator, Region V Mr. Phil Johnson U.S. Nuclear Regulatory Commission U.S. Nuclear Regulatory Commission 1450 Maria Lane/Suite 210 Region V Walnut Creek, California 94596 1450 Maria Lane, Suite 210 Walnut Creek, California 94596 Chairman, Board of Supervisors San Diego County Mr. Don Womeldorf 1600 Pacific Highway, Room 335 Chief, Environmental Management Branch San Diego, California 92101 California Department of Health 714 P Street, Room 616 Sacramento, California 95814 (14)
Messr Ray and Cotton May 8, 1990 If there are any questions concerning this or any other matter related to the safety evaluation for the San Onofre 2/3 spent fuel pool expansion, please do not hesitate to contact me.
Sincerely, original signed by Lawrence E. Kokacko, Project Manager Project Directorate V Division of Reactor Projects -
- III, IVN V and Special Projects Office of Nuclear Reactor Regulation cc:
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,.oceFTe NRC & Local PbRs PDV Reading JLarkins JZwolinski LKokajko OGC Edordan ACRS (10)
PDV Gray File LA DHagan GHill (8)
Wdones JCalvo GPA/PA OC/LFMB Region V (4)
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[RERACK LETTER]