ML20246P684
| ML20246P684 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 05/16/1989 |
| From: | Varga S Office of Nuclear Reactor Regulation |
| To: | NORTHEAST NUCLEAR ENERGY CO. |
| Shared Package | |
| ML20246P670 | List: |
| References | |
| NUDOCS 8905220263 | |
| Download: ML20246P684 (3) | |
Text
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7590-01 UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION In the Matter of
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-NORTHEAST NUCLEAR ENERGY Docket No. 50-245
- COMPANY, (Millstone Nuclear Power Station, UnitNo.1)
REVOCATION OF EXEMPTION I.
Northeast Nuclear. Energy Company (NNECO or the licensee) is the holder of Facility Operating License No. DPR-21, which authorizes the operation of the Millstone Nuclear Power Station, Unit No.1, (the facility) at the steady-state power levels not in excess of 2011 megawatts thermal. The facility is a
- boiling water reactor (BWR) located at the licensee's site in New London County, Connecticut. The license provides, among other things, that it is subject to all rules, regulations and orders of the Nuclear Regulatory Comission (the Comission) now or hereafter in effect.
II.
10 CFR 50.49, " Environmental qualification of electric equipment impstant to safety for nuclear power plants," requires that the environmental qualifica-tion program at Millstone Unit No.1 be completed at the end of the second 8905220263 890515 ADOCKOSOOg5 DR
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l refueling outage fo11cwing March 31, 1983 (the second refueling outage ended December 23,1985). The Commission issued a Memorandum and Order to the licensee regarding the deadline for environmental qualification of the remaining unqualified motor operators at Millstone Unit No. 1, dated November 20, 1985, that granted an extension of the schedule to no later than August 30, 1987. On June 9,1987, the NRC granted an exemption to the environmental requirements for seven valve motor operators because it was determined that they were not necessary to ensure that'the required systems will function to mitigate a design basis event (June 18, 1987 52 FR 23219).
By letter dated March 2,1989, the licensee forwarded Licensee Event Report (LER)89-001 to document that further evaluation has shown that two valves (1-CU-2 and 1-CV-3) may be subject to a post-accident environment that would require qualification of the valves.
In that LER, the licensee identified appropriate short-term corrective actions and committed to replace the valve i
operators with qualified motor operators during the next refueling outage (the reload 12/ cycle 13 refueling outage started April 8,1989). By letter dated April 17, 1989, the licensee supplied addition 61 information on this issue.
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l The NRC has reviewed the information submitted by the licensee and I
concludes that the basis upon which the exemption for the two valve operators was granted is no longer valid. The NRC finds the actions proposed by the l
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licensee, both short-term (additional isolation signal on high drywell pressure and increased plant operator training) and long-term (replacement of valve coerators with qualified operators) to be appropriate and timely. These actions will bring the two valves into compliance with 10 CFR 50.49. The licensee has stated that the basis for the other five valves covered by this exemption is still valid.
IV.
Accordingly, the Commission has determined that the specific exemption from 10 CFR 50.49 granted on June 8,1987, for the motor operators for valves 1-CU-2 and 1-C0-3 is hereby revoked. This revocation is necessary for the protection of the public health and safety which is afforded by compliance with the requirements of 10 CFR 50.40 In addition, the qualification of valve operators 1-CV-2 and 1-CU-3 should be completed prior to the restart of Millstone Unit No.1 from the current refueling outage.
This revocation of exemption is effective upon issuance.
FOR THE NUCLEAR REGULATORY COMMISSION hV deven A.
arga, Directo Division of Reactor Proj I/II 4
Office of Nuclear Reactor Regulation Dated at Rockville, Maryland this 16th day of May 1989.
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