ML20040C110
| ML20040C110 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 01/07/1982 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20040C104 | List: |
| References | |
| 47351, TAC-47351, TAC-47352, TAC-47353, NUDOCS 8201270277 | |
| Download: ML20040C110 (2) | |
Text
-
a
,,s** 4 kg,
[
,og UNITED STATES y ). 5- ( 3 g NUCLEAR REGULATORY COMMISSION
- /s.r ^e /... e s
WASHINGTON D. C. 20555 n rf e
,fWs4,$
SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION SUPPORTING A'1ENDitENT NO. 49 TO FACILITY OPERATING LICENSE NO. DPR-72 FLORIDA POWER CORPORATION, ET AL CRYSTAL RIVER UNIT NO. 3 NUCLEAR GENERATING PLANT DOCKET NO. 50-302 Introduction
'By application dated November 17, 1981, Florida Power Corporation (FPC or the licensee) requested changes to the Technical Specifications (TSs) of Facility Operating License No. 0472 for operation of the Crystal River Unit No. 3 Nuclear Generating Pleat. These changes would revise the inspection interval for hydraulic snubbers to 18 months for the first inspection following the 1981 refueling outage. Following our review and discussions with FPC staff, we changed the proposed one-time interval to 12 montns + 25% for snubbers inside the reactor building.
Discussion and Euluation _
FPC complated a refueling and maintenance outage at CR-3 in December 1981.
Part of the maintenance is visual inspection and functional testing of hydraulic snubbers. During the snubber inspection, FPC discovered cracks in many of the aluminum reducer bushings that connect the fluid line from a valve body to a snubber cylinder. Because of this, FPC has removed and rebuilt all safety related hydraulic snubbers in the CR-3 reactor building except for four snubbers. By letter dated November 27, 1981, we accepted the deletien of these four snubbers from the required inspections based on an analysis accomplished by FPC. Except for these four snubbers, all of the aluminum bushings for snubbers in the reactor building have t
been replaced with stainiess steel and the snubbers functionally tested l
before installation, l
Safety related snubbers outside the reactor building are also being rebuilt with aluminum bushings replaced and functional tests perfomed before installation. No cracked bushings have been discovered on the snubbers outside the reacter building ta date, however, with a 100% visual inspection.
VHual inspection intervals will not be changed for these external snubbers.
FPC initially proposed an 18-month visual inspection interval based on the i
above considerations and to avoid frequent reactor shutdown to inspect snubbers inside containment.
Following discussions with our staff, however, FPC agreed to reduce the interval for visual inspection to 12 months for safety related snubbers inside the reactor building. The TSs have been changed accordingly.
l We have determined that the one-time 12-month inspection interval for snubbers inside the reactor building is acceptable because all of the aluminum bushings on those safety related snubbers have been replaced, the snubbers have been rebuilt, and they have passed the perfomance tests.
l 8201270277 820107 PDR ADOCK 05000302 P
. Environmental Consideration We have determined that the amendment does not authorize a change in effluent types *or total amounts nor.an increase in power level and will not result in any significant environmental impagt. Having made this determination, we have further concluded that the amendment involves an action which is insignificant from the standpoint of environmental imp:ct 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 this amendment.
Conclusion We have concluded, based on the considerations discussed above, that:
(1) because the amendment does not involve a significant increase in the probabilit.'r or consequences of accidents previously considered and does not involve e significant decrease in a safety margin, the amendment does 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 this amendment will not be inimical to the common defense and security or to the health and safety of the public.
l Dated: January 7, 1982 Contributors to this SER were Peter Erickson and Sydney Miner.
(
l 1
l l