ML20116F510
| ML20116F510 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 11/03/1992 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20116F505 | List: |
| References | |
| NUDOCS 9211100344 | |
| Download: ML20116F510 (3) | |
Text
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UNITED STATES
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NUCLEAR REGULATORY COMMISSION g
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WASHINGTON, D. C. 20555
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SAFETY EVAL ETION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMENT NOS. ng AND no TO FACILITY OPERATING LICENSE NOS. DPR-24 AND DPR-27 WISCONSIN ELECTRIC POWER COMPANY POINT BEACH NUCLEAR PLANT. UNIT NOS. 1 AND 2 DOCKET NOS. 50-266 AND 50-301 M TION e
By ated September 10, 1992, Wisconsin Electric Power Company (WEPCo),
- e, submitted a request to revise the Technical Soecifications for
,i> nits 1 and 2.
The proposed change would result in.a one-time
' the annual inspection of Emergency Diesel Generator (EDG) G02.
c t would delay requirement for an annual inspection by up to 6 out not to exceed 18 months from the previous inspection for EDG G02 (irain B).
In this submittal, WEPC0 provided the basis for and evaluation of the proposed amendments.
2.0 EVALUATION The existing Technical Specification Section 15.4.6, " Emergency Power System Periodic Tests," Specification A.3 requires that the two emergency diesel generators at the Point Beach Nuclear Plant each be inspected at least annually. The WEPCo ament; ment application proposed to add to the Technical Specification 15.4.6.A.3 the following footnote, "The surveillance interval for the 1992 annual inspection of diesel generator G02 may be extended up to six months, but not to exceed a total time between annual inspections of 18 months."
The Point Beach Nuclear Plant has two nuclear units with two emergency diesel generators. The plant also has a nonsafety-related gas turbine which can be used to supply power to the on-site electrical distribution system, including the Cla% IE buses, in the event of loss of all AC power.
WEPC has recently completed a major overhaul of the gas turbine generato: and is proceeding with startup and qualification testing of the repaired unit.
WEPCo projected a need for approximately 1 month after the completion of the overhaul for testing the gas turbine generator to demonstrata its performance.
WEPCo considers it not prudent to take the emergency diesel generator out of service for annual inspection during the time when the gas turbine generator is out of service because it would leave only one EDG as the on-site ac power source.
The last inspection of emergency diesel generator G02 was completed on August 6, 1991.
The technical specifications allow an adjustment of surveillance intervals up to 25% to acccmmodate test schedules and refueling 9211100344 921103 PDR ADOCK 05000266 P
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,-. dates.
This would allow WEPCo to delay the completion of the scheduled 1992:
annual inspection to as late as November 6,1992. However, in WEPCo's~ opinion-this is not enough time to-ensure that the gas turbine can be returned to normal se. Ice and Eto demonstrate its operability and reliability prior to removing emergency diesel generator G02 from service for its annual inspection.
Both emergency diesel generators at the Point Beach Nuclear Plant are General-Motors Corporation, Electro Hotive Division, Model 999-20 rated at 2850 kW continuous, supplied by MKW Power Systems Inc.
The licensee confirmed that both emergency diesel generators have been maintained in accordance with the manufacturer's recommendations since their installation.
Furthermore, MKW Power Systems Inc. has evaluated extending the normally performed annual maintenance to 18 months and has determined the extension is acceptable.
Based on the maintenance history, including the most recent annual inspection and the MKW Power Systems Inc. evaluation, the staff concludes that:
(1) it is acceptable to perform maintenance at an 18-month interval; (2) emergency diesel generator G02 will remain operable during the requested 6-month extension, and; (3) there will be no adverse effect on the unit reliability.
Delaying the inspection of emergency diesel generator G02 will ersure that there is adequate time to place the gas turbine back in service to be available'as a backup-should emergency diesel generator G01 fail, thus improving the availability of the on-site electrical power.
3.0 STATE CONSULTATION
In accordance with the Commission's regulations, the Wisconsin State official was notified of the proposed' issuance of the amendments.
The State official had no comments.
4.0 ENVIRONMENTAL CONSIDERATION
These amendments involve a change in-an inspection or surveillance requirement.
The staff has determined that the amendments involve no significant increase in the amounts, and no significant change in the types, of any effluents that may be released offsite, and that there is no significant increase in individual-or cumulative occupational radiatin, exposure. The Commission has previously published a proposed finding that these amerdments involve no significant hazards consideration and there has beenino public comment'on such finding (57 FR 45091). Accordingly, these amendments meet the eligibility criteria for categorical exclusion set forth-in 10 CFR 551.22(c)(9).
Pursuant to 10 CFR 51.22(b), no environmental impact statement or environmental assessment need.be prepared in connection with the l
issuance of these amendments.
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5.0 CONCLUSION
The staff has concluded, based on the considerations discussed above, that (1) there is reasonable assurance that the health and safety of the public will not be endangered by operation in the proposed manner, (2) such activities will be conducted in compliance with the Commission's regulations, and (3) the issuance of the amendments will not be inimical to the common-defense and security or to the health and safety of the public.
Principal Contributor:
S. N. Saba Dated: November 3, 1992