ML20213H122
| ML20213H122 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 05/13/1987 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20213H118 | List: |
| References | |
| NUDOCS 8705190153 | |
| Download: ML20213H122 (2) | |
Text
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s UNITED STATES
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NUCLEAR REGULATORY COMMISSION o
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WASHINGTON. D. C. 20555
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SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMENT NO. 4 TO FACILITY OPERATING LICENSE NO. NPF-49 NORTHEAST NUCLEAR ENERGY COMPANY, ET AL.
MILLSTONE NUCIEAR POWER STATION, UNIT NO. 3 DOCKET NO. 50-423
1.0 INTRODUCTION
By letter dated January 30, and supplemented by letter dated March 6,1987, the Northeast Nuclear Energy Company (licensee) requested a change to the Millstone Unit 3 Technical Specifications, Section 4.0.6 and Surveillance Requirement 4.8.1.1.2.f.1).
The proposed change would extend, on a one-time basis, the diesel generator (DG) 18-month surveillance inspection up to 4 months beyond the maximum interval allowed by Technical Specification 4.0.6.
The licensee states that, because of the extensiveness of this type of inspection, it should be performed during a refueling outage. Because the 18-month surveillance for the DG inspection occurs in May 1987, and the refueling outage is not scheduled until January 1988, the licensee cannot postpone the subject inspection without violating Technical Specification 4.0.2.
Subsequent 18-month DG inspections would coincide with scheduled refueling outages.
2.0 EVALUATION The subject inspection involves a partial teardown of the DG, which would render the DG inoperable longer than the 72-hour period prescribed by the Technical Specification, Limiting Conditions for Operation (LCO). The March 6,1987 letter states that the subject inspection would require the DG
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to be in an inoperable state for approximately 12 days. Based on the extent of the DG inspection, the staff agrees that 12 days is a reasonable estimate for completing the work. Additionally, the licensee states that the DGs, which are used for standby service, log very few hours of operation on a yearly basis; thus engine wear and tear is minimal. The DG manufacturer concurs with the licensee's conclusion.
Because the inspection necessitates an extended shutdown of the reactor, the staff concurs with the licensee that the 18-month DG inspection should be performed during the Millstone Unit 3 refueling outage. Furthennore, the staff also concurs with the licensee that an 8-month extension of the surveillance interval will not result in excessive wear and tear on the diesel. Therefore, the staff finds the Technical Specification change requested in the January 30, 1987 letter, acceptable, eigh Q 3
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3.0 ENVIRONMENTAL CONSIDERATION
This amendmant changes a requirement with respect to installation or use of a facility component located within the restricted area as defined in 10 CFR Part 20 and change surveillance requirements. The staff has determined that the amendment involves 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 radiation exposure. The Commission has previously published a proposed finding that the amendment involves no significant hazards consideration and there has been no public comment on such finding. Accordingly, the amendment meets the eligibility criteria for categorical exclusion set forth in 10 CFR 651.22(c)(9). Pursuant to 10 CFR 951.?2(b), no environmental impa:t statement or environmental assessment need be prepared in connection with the issuance of the amendment.
4.0 CONCLUSION
We have 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, and (2) such activities will be conducted in compliance with the Commission's regulations, and the issuance of the amendment will not be inimical to the connon defense and security or to the health and safety of the public.
Date:
May 13,1987 Principal Contributors:
1
,'T R. Ferguson R. J. Giardina
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