ML20113C245
| ML20113C245 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 06/20/1996 |
| From: | NRC (Affiliation Not Assigned) |
| To: | |
| Shared Package | |
| ML20113C227 | List: |
| References | |
| NUDOCS 9607010074 | |
| Download: ML20113C245 (4) | |
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UNITED STATES y*.
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NUCLEAR REGULATORY COMMISSION
,2 WASHINGTON. D.C. 20666-0001 SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMENT N0.107 TO FACILITY OPERATING LICENSE NO. NPF-43 DETROIT EDIS0N COMPANY FERMI-2 DOCKET N0. 50-341
1.0 INTRODUCTION
By application dated November 22, 1995, Detroit Edison Company, (the licensee) requested changes to the Technical Specifications (TSs) for Fermi 2.
The proposed changer would, in part, revise TS 4.8.1.1.2.a by (1) replacing Table 4.8.1.1.2-1, " Diesel Generator Test Schedule," with a single surveillance interval of at least once per 31 days and (2) deleting TS 4.8.1.1.3,
" Reports." The NRC provided guidance on the proposed TS changes in Generic Letter (GL) 94-01, " Removal of Accelerated Testing and Special Reporting Requirements for Emergency Diesel Generators," dated May 31, 1994.
2.0 EVALUATION The surveillance interval for testing of emergency diesel generators (EDGs) is currently governed by TS Table 4.8.1.1.2-1, which gives a diesel generator test schedule based on the number of EDG failures experienced in the last 20 and 100 tests. This practice of increasing the testing frequency with the number of failures is commonly referred to as accelerated testing.
Accelerated testing is begun when an EDG experiences two or more failures in
' the last 20 tests or five or more failures in the last 100 tests.
This increased test frequency continues until seven failure-free tests have been performed and the number of failures in the last 20 tests is reduced to one or Zero.
As stated in Generic Letter 94-01, the staff has concluded that implementing the provisions of 10 CFR 50.65, " Requirements for Monitoring the Effectiveness of Maintenance at Nuclear Power Plants" (the maintenance ru,le), including the applicable regulatory guidance, will ensure reliable EDG performance.
Measures to be implemented in accordance with the maintenance rule include performance of detailed root cause analysis of individual EDG failures, effective corrective actions to individual EDG failures, and implementation of EDG preventive maintenance.
The staff has determined that the implementation of these measures will justify removing the accelerated testing requirements.
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l 9607010074 960620 PDR ADOCK 05000341 P
T c In its application dated November 22, 1995, the licensee committed to implement, within 90 days of issuance of the license amendment, a maintenance program for monitoring and maintaining EDG performance in accordance with the i
maintenance rule and Regulatory Guide (RG) 1.160, " Monitoring the i
Effectiveness of Maintenance at Nuclear Power Plants," excepting the reference in the RG to the trigger values contained in NUMARC guidance document 87-00, Revision 1, " Guidelines and Technical Bases for NUMARC Initiatives Addressing Station Blackout at LWRs [ light-water reactors]," August 1991. As stated in Generic Letter 94-01, this exception is acceptable, and RG 1.160 has been revised (January 1995) to reflect this staff position. On the basis of the licensee's commitment to implement this maintenance program, the staff finds acceptable the proposed changes to (1) TS 4.8.1.1.2 to remove reference to TS Table 4.8.1.1.2-1 for test intervals and (2) to remove accelerated testing requirements for EDGs.
The licensee also proposes to delete TS 4.8.1.1.3, which requires licensees to report EDG failures to the NRC. The reporting requirements of TS 4.8.1.1.3 are associated with guidance contained in RG 1.108, " Periodic Testing of i
Diesel Generator Units Used as Onsite Electric Power Systems at Nuclear Power Pl ant s. "
In developing GL 94-01, the staff determined that existing reporting requirements, such as those of 10 CFR 50.73, adequately ensure that the NRC learns of significant problems with EDG performance. Therefore, the staff i
finds the deletion of TS 4.8.1.1.3 to be acceptable.
3.0 STATE CONSULTATION
In accordance with the Commission's regulations, the Michigan State Official l
was notified of the proposed issuance of the amendment. The State official had no comments.
4.0 ENVIRONMENTAL CONSIDERATION
The amendment involves a change to a _ surveillance requirement.
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 issued a proposed finding that the amendment involves no significant hazards consideration, and there has been no public comment on such finding (61 FR 7550).
Accordingly, the amendment meets the eligibility criteria for 1
categorical exclusion set forth in 10 CFR 51.22(c)(9). This amendment also 1
involves changes in recordkeeping, reporting, or administrative procedures or requirements.
Accordingly, with respect to these items, the amendment meets the eligibility criteria for categorical exclusion set forth in 10 CFR 51.22(c)(10).
Pursuant to 10 CFR 51.22(b), no environmental impact statement or environmental assessment need be prepared in connection with the issuance of the amendment.
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5.0 CONCLUSION
The Commission 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 amendment will not be inimical to the common defense and security or to the health and safety of the public.
i Principal Contributors:
W. Reckley T. Colburn Date: June 20, 1996
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Mr. Douglas R. Gipson Fermi-2 Detroit Edison Company cc:
John Flynn, Esquire Senior Attorney Detroit Edison Company 2000 Second Avenue Detroit, Michigan 48226 Drinking Water sud Radiological Protection Division Michigan Department of Environmental Quality 3423 N. Martin Luther King Jr Blvd P. O. Box 30630 CPH Mailroom Lansing, Michigan 48909-8130 U.S. Nuclear Regulatory Commission Resident Inspector's Office 6450 W. Dixie Highway Newport, Michigan 48166 Monroe County Emergency Management Division 963 South Raisinville Monroe, Michigan 48161 Regional Administrator, Region III U.S. Nuclear Regulatory Commission 801 Warrenville Road Lisle, Illinois 60532-4351 Ms. Lynne S. Goodman Director - Nuclear Licensing Detroit Edison Company Fermi-2 6400 North Dixie Highway Newport, Michigan 48166 w im