ML20040G317
| ML20040G317 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 02/02/1982 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20040G316 | List: |
| References | |
| NUDOCS 8202120156 | |
| Download: ML20040G317 (2) | |
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UNITED STATES
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NUCLEAR REGULATORY COMMISSION j
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SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMENT N0. 74 TO FACILITY OPERATING LICENSE NO. DPR-32 AND AMENDMENT NO. 75 TO FACILITY OPERATING LICENSE NO. DPR-37 VIRGINIA ELECTRIC AND POWER COMPANY SURRY POWER STATION, UNIT NOS. 1 AND 2 DOCKET NOS. 50-280 AND 50-281 Introduction By letter dated November 5,1981, the Virginia Electric and Power Company (the licensee) requested amendments to License Nos. DPR-32 and DPR-37 for the Surry Power Station, Unit Nos.1 and 2.
These changes would revise the bases of the Technical Specifications related to incore flux mapping. Specifically,
- a. minimum number of 38 thimbles would be required to perfom the flux map instead of 40.
Discussion and Evaluation The current Technical Specifications state that a full core flux mapping system is equal to or greater than 40 thimbles.
The licensee has proposed that the minimum number of thimbles be changed from 40 to 38. The value of 38 is 75 percent of the total number of thimbles.
The basis given for the change is that 75 percent is the same as required by Standard Technical Specifications and is approved by NRC for a number of Westinghouse reactors.'
We agree that the 75 percent value (38 thimbles) is an accepted value by NRC and is acceptable for Surry.
However, the Standard Technical Specifications require a minimum of 2 thimbles per core quadrant to be used in power distri-l bution measurements.
We have discussed this with the licensee and agreement i
has been reached to include this in the Technical Specification bases.
Based on our review, we find that there is adequate basis for this change and we conclude that it is acceptable.
Environmental Consideration We have determined that the amendnents do not authorize a change in effluent types or total amounts nor an increase in ocwer level and will not result in any significant environmental impact. Having made this determination, we have 1
8202120156 820202 PDR ADOCK 05000200 P
s 2-further concluded that the amendments involve an action which is insignificant from _the standpoint of environmental impact and, pursuant to 10 CFR 551.5(d)(4)~,
that an environmental impact statement or negative declaration and enviromental impact appraisal need not be-prepared in connection with the issuance of these amendments.
Conclusion We have concluded, based on the considerations discussed above, that:
(1) because the amendments do not involve a significant increase in the probability or consequences of accidents previously considered and do not involve a significant decrease in a safety nargin, the amendments do not involve a significant hazards consideration, (2) there is reasonable assurance that the health and. safety of the public will not be endangered by operation in the proposed manner, and-(3) such activities will be conducted in compliance with the Commission's regulations and the issuance of these amendments will not be inimical to the common defense and security or to the health and safety of the public.
Date: February 2,1982 s
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