ML17055D710
| ML17055D710 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 03/24/1988 |
| From: | Haughey M Office of Nuclear Reactor Regulation |
| To: | Mangan C NIAGARA MOHAWK POWER CORP. |
| Shared Package | |
| ML17055D711 | List: |
| References | |
| TAC-66573, NUDOCS 8803300163 | |
| Download: ML17055D710 (6) | |
Text
March 24, 1988 Docket No. 50-410 Mr. Charles V. Mangan Senior Vice President Niagara Mohawk Power Corporation 301 Plainfield Road
- Syracuse, New York 13212
Dear Mr. Mangan:
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SUBJECT:
SAFETY EVALUATION REPORT ON NINE MILE POINT UNIT 2 COMPLIANCE WITH ATWS RULE 10 CFR 50.62 RELATING TO ALTERNATE ROD INJECTION (ARI)
AND REACTOR PROTECTION TRIP (RPT)
SYSTEMS (TAC 66573)
The ATWS Rule (10 CFR 50.62, "Requirements for Reduction of Risk from Anticipated Transients Without Scram (ATWS) Events for Light-Mater-Cooled Nuclear Power Plants" ) requires improvements in the design and operation of commercial nuclear power facilities to reduce the likelihood of failure to shutdown the reactor following anticipated transients, and to mitigate the consequences of an ATWS event.
The requirements for a boiling water reactor are to install an alternate rod injection (ARI) system, a standby liquid control system (SLCS) and to trip the reactor coolant recirculating pumps automatically under conditions indicative of an ATWS.
Niagara Mohawk Power Corporation provided information on compliance with the ATWS rule for Nine Mile Point Unit 2 in the FSAR and in letters dated May 2, 1986 and April 3, 1987.
In Supplements 2 and 4 of the Nine Mile Point Unit 2 Safety Evaluation Reports the staff approved the modifications made to the
- plant, as discussed in the referenced submittals, to comply with the ATWS rule with the exception of the instrumentation logic.
The staff has completed its evaluation of the instrumentation logic (the ARI system and the ATWS/RPT system) and found it acceptable for Nine Mile Point Unit 2.
The basis for our acceptance is discussed in the enclosed Safety Evaluation.
This completes the staff's review of the design modifications at Nine Mile Point Unit 2 to comply with the ATWS rule.
The staff will provide guidance on the technical specification requirements for the ARI system in a separate document.
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Any questions concerning the enclosed evaluation should be directed to the Project Manager, Nary Haughey (301/492-1439)
Sincerely Enclosure As stated cc:
See next page Mary F. Haughey, Project Manager Project Directorate I-1 Division of Reactor Projects, I/II PDI-1 CVogan 3/gt/88 PDI-1 MHaughey:mak 3/gg/88 go PDI-1 RCapra 3/g0 /88
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Mr. C. V. Mangan Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station Unit 2 CC:
Mr. Troy B. Conner, Jr.,
Esq.
Conner A Wetterhahn Suite 1050 1747 Pennsylvania
- Avenue, N.W.
Washington, D.C.
20006 Mr. Richard Goldsmith Syracuse University College of Law E. I. White Hall Campus
- Syracuse, New York 12223 Mr. Don Hill Niagara Mohawk Power Corporation Suite 550 4520 East West Highway
- Bethesda, MD 20814 Resident Inspector Nine Mile Point Nuclear Power Station P. 0.
Box 99
- Lycoming, New York 13093 Mr. Gary D. Wilson, Esquire Niagara Mohawk Power Corporation 300 Erie Boulevard West
- Syracuse, New York 13202 Mr. Peter E. Francisco, Licensing Niagara Mohawk Power Corporation 301 Plainfield Road
- Syracuse, New York 13212 Regional Administrator, Region I
U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, Pennsylvania 19406 Mr. Paul D.
Eddy New York State Public Serice Commission Nine Mile Point Nuclear'tation-Unit 2 P.O.
Box 63
- Lycoming, New York 13093 Mr. Richard M. Kessel Chair and Executive Director State Consumer Protection Board 99 Washington Avenue
- Albany, New York 12210 Mr. Richard Abbott, Unit 2 Station Superintendent Nine Mile Point Nuclear Station Niagara Mohawk Power Corporation P. 0.
Box 32
- Lycoming, NY 13093 Mr. Thomas Perkins, General Supt.
Nine Mile Point Nuclear Station Niagara Mohawk Power Corporation P. 0.
Box 32
- Lycoming, NY 13093 Ms. Donna Ross New York State Energy Office 2 Empire State Plaza 16th Floor
- Albany, New York 12223