ML17208A801
| ML17208A801 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 06/13/1980 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML17208A800 | List: |
| References | |
| NUDOCS 8007100138 | |
| Download: ML17208A801 (4) | |
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UNITED.STATES NUCLEAR REGULATORY COMMlSSION WASHINGTON, O. C. 20555 SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION SUPPORTING AMENDMENT NO.
35 TO FACILITY OPERATING LICENSE NO. DPR-67 FLORIDA POWER AND LIGHT COMPANY ST. LUCIE, UNIT NO.
1 DOCKET NO. 50-335 Introduction At about 6:00 p.m.
on May 5, 1980, Florida Power and Light Company (FPL) telephoned the Operating Reactor Project Manager and requested a change to Technical Specification 4.7.1.2 to allow the St. Lucie Unit No.
1 Plant to proceed from Mode 4 to Mode 3.
This change would allow steam turbine driven Auxiliary Feedwater (AFW) pump surveillance to be performed in operating Mode 3 (hot standby - reactor shutdown - average coolant temperature greater than 325'F) instead of Mode 4 (hot shutdown - reactor shutdown - average coolant temperature 200'F to 325'F).
FPL also submitted a letter dated May 5, 1980 'requesting this change.
Evaluation Technical Specification 4.7.1.2.a.2.(b) requires verification every 31 days that the steam turbine driven AFM pupp develops a discharge pressure of
>1342 psig on recirculation flow.
The AFM pumps must be operable in Modes 1, 7,
and 3.
Prior to entry into Mode 3, while in Mode 4, there is not adequate steam via the Main Steam System to run the turbine driven pump for this surveillance, as may be required by Technical Specification 4.0.4.
Previously FPL used a
now degraded auxiliary boiler to perform this surveillance.
FPL has proposed to add a footnote stating that when the plant-is not in Modes 1, 2, or 3, surveillance shall be performed within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after entering Mode 3 and prior to entering Mode 2.
Since the steam turbine driven AFM pump is not designed to be operable during Mode 4 operating conditions, it is necessary to be in at least Mode 3 to perform this surveillance.
Furthermore the two 50'4 capacity electric driven AFM pumps must be operable when proceeding from Mode 4 to Mode 3, per Technical Specifications 3.0.4 and 4.0.4, providing assurance that the plant can be cooled back down to 325'F once in Mode 3.
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Based on the above, we have found the 'licensee's proposed change acceptable.
Telephoned authorization for the proposed change was given on Nay 5, 1980 and confirmed by letter from the Assistant Director for Operating Reactor s, Division of Licensing, dated Nay 5, 1980.
Environmental Consideration Me have determined that the amendment does not authorize a change in effluent types of 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 amendment involves an action which is insignificant from the standpoint of environmental impact and, purusant to 10 CFR 551.5(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 We have concluded, based'n the considerations discussed above, that:.
(1) because the amendment does not involve a significant increase in the probability or consequences of accidents previously considered and does not involve a significant decrease in a safety margin, the amendment does not involve a significant hazards consideration, (2) there is r easonable assurance that the health and safety of the public will not be endangered by operation in the proposed'anner, and (3) 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.