ML20084A429
| ML20084A429 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 04/13/1984 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20084A424 | List: |
| References | |
| NUDOCS 8404250013 | |
| Download: ML20084A429 (2) | |
Text
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SAFETY EVALUATION AMENDMENT NO. 8 TO DPR-76 DIABLO CANYON NUCLEAR POWER PLANT, UNIT 1 DOCKET NO. 50-275 Introduction By letter dated' July 1, 1983 the Pacific Gas A Electric (PG&E) Company requested an amendment to the Diablo Canyon, Unit 1 Technical Specifications that would require certain actions to be taken if the ocean water temperature exceeds 64 F to ensure adequate ultimate heat sink capacity.
-Evaluation In response to concerns raised about the heat removal capability of the Component Cooling Water System (CCWS),'PG&E in letters date.d March 18, April 4, and May 18, 1983, provided the results of a re-analysis of the heat removal capability of the CCWS assuming the worst design-basis heat load (i.e. LOCA), and the most limiting single failure.. PGAE further comitted to placing a Technical Specification on a 64*F ocean water intake temperature with appropriate
- surveillance, limiting conditions for operation, action statements, and bases.
- In the event the ocean ' water temperature should exceed 64'F, the proposed change would require placing.a second component cooling water heat exchanger in service within eight hours or be in at least HOT STANDBY within the 'next six hours and in at least HOT SHUTDOWN within the next six hours.
The staff evaluation.of the above concerns : including the proposed technical specification, was provided in Supplement No.116-(dated August 1983) to the Safety Evaluation: Report for Diablo Canyon (NUREG-0675, Supplement 16) whichL concluded that the proposed Technical Specification.of 64*F and the associated
- actions were acceptable and would provide adequate' assurance of the. component
- cooling water heat removal capability.
Contact With~ State Official
'By copy of a~ letter dated October 11, 1983 to the licensee, the NRC staff.
advised the Chief of the Radiological Health Branch, State Department of Health Services, State of California, of its proposed determination of no significant hazards consideration. No coments were received.
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Environmental Consideration We have determined that this amendment does not authorize a change in effluent types or total amount nor an increase in power level and will not result in any significant environmental inpact. Having made this determination, we have further concluded that this amendment involves action which is insignificant from the standpoint of environmental impact and pursuant 10 CFR Section 51.5(d)
(4), that an environmental impact statement or negative declaration and environmental impact appraisal need not be prepared in connection with the issuance of this amendment.
Conclusion Based upon our evaluation of the proposed change to the Diablo Canyon Nuclear Power Plant, Unit 1 Technical Specifications, we have concluded that: there is reasonable assurance that the health and safety of the public will not be endangered by operation in the proposed manner, and such activities will be conducted in compliance with the Commission's regulations and the issuance of this amendment will not be inimical to the common defense and security or to the health and safety of the public. We, therefore, conclude that the proposed change is acceptable.
Dated: APR 131984 1
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L April 13. 1984 If,50ANCE OF AMENOMENT NO. 8 TO FACILITY OPERATING LICENSE NO. DPR-/6 OIABLO CANYON NUCLEAR POWER PLANT, UNIT 1 DISTRIBUTION Docket File 50 273/323 NRC POR Local POR PRC Systte NSIC LB#3 Reading JLee HSchforiing TNovak J3altzman, SAB LChandler, OELD CMiles HDenton JRutberg AToalston kiillier, LFMB NGrace EJordan LHarmon DBi'inkman, SSP 3 TD.irnhart(4)
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