ML20039B966
| ML20039B966 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 12/04/1981 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20039B964 | List: |
| References | |
| NUDOCS 8112280124 | |
| Download: ML20039B966 (2) | |
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UNITED STATES' ph p'1 NUCLEAR REGULATORY COMMISSION Q % l)}j g
WASHINGTON, D. C. 20555 SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMENT NO. 52 TO FACILITY OPERATING LICENSE NO. DPR-42 AND AMENDMENT NO. 46 TO FACILITY OPERATING LICENSE NO. OPR-60 NORTHERN STATES POWER COMPANY PRAIRIE ISLAND NUCLEAR GENERATING PLANT, UNIT NOS. 1 AND 2 DOCKET NOS. 50-282 AND 50-306
,ItgRODUCTION By letter dated November 12, 1979 Northern States Power Company (the licensee; requested a change to the Technical Specifications.(TS) of Appendix A of operating _ license Nos. OPR-42 and DPR-60. The proposed changes which were initiated at our request, would limit conditions for operation and establish surveillance requirements of the reactor coolant and the secondary coolant activities.
DISCUSSION AND EVALUATION The staff requested that the licensee propose changes to Appendix A.TS that would modify the RCS activity specification in order to comply with require-ments set forth in the standardized Technical Specifications. In addition these proposed changes would impose new requirements consistent with URC regulatory guidance ensuring that the resulting two hour dose at the site bounaary will not exceed an appropriately small fraction of 10 CFR Part 100 limits following a steam generator tube rupture accident.
These limits imposed by the new requirements on 1 131 at the site boundary would be reduced by approximately a factor of 5 below those now axisting in Appendix A which are already considerably below the 10 CFR Part 100 limits. By letter dated Novamber 12, 1979 the licensee submitted proposed changes limiting conditions for operation and imposing surveillance require-ments of the reactor coolant and secondary coolant activity. Based on our review, we. concluded that the licensee's anitial submittal conformed with.all of the requirements of the standardi&cd Technical Specifications except for monitoring activities at cold shutdown and during thermal power changes.
The licensee's submittal was modified to include requirements acceptable to the staff. These modifications were discussed with and agreed to by the i
. licensee. The licensee's prcposed change as modified will further ensure that the reactor coolant and secondary coolant activities will be maintained at low concentrations so that in the event of a steam generator tube rupture or a steam line rupture the off-site doses will be a small fraction of the exposure guidelines of 10 CFR Part 100. On this basis we find the proposed changes to the TS as modified are acce'ptable.
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8112280124 811204 PDR ADOCK 05000 P
Environmental Consideration We have determined that the amendments do not authorize a change in effluent types or total amounts nor an increase in power level and will not result in any significant environmental impact. Having made this determination, we have 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 environ-mental 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 amend. ents 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 margin, 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: December 4, 1981 e
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