ML17058A833
| ML17058A833 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 07/01/1991 |
| From: | Brinkman D Office of Nuclear Reactor Regulation |
| To: | Sylvia B NIAGARA MOHAWK POWER CORP. |
| Shared Package | |
| ML17058A834 | List: |
| References | |
| TAC-68570, NUDOCS 9107080116 | |
| Download: ML17058A833 (6) | |
Text
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Docket No. 50-220 UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555 July 1, 1991
'c Mr. B. Ralph Sylvia Executive Vice President, Nuclear Niagara Mohawk Power Corporation 301 Plainfield Road
- Syracuse, New York 13211 Dear Mr.
Sy 1 via:
SUBJECT:
STATION BLACKOUT RULE SAFETY EVALUATION NINE MILE POINT NUCLEAR STATION UNIT HO.
1 (TAC NO. 68570)
On July 21, 1988, the Code of Federal Regulations, 10 CFR Part 50, was amended to include a
new Section 50.63, entitled, "Loss of All Alternating Current Power," (Station Blackout).
The station blackout (SBO) rule requires
- that, each light-water-cooled nuclear power plant to be able to withstand and recover from a SBO of specified duration.
The SBO rule also requires. that information defined in the rule be provided to the staff for review.
By letters dated April 13, 1989, April 3, 1990, April 16,
- 1990, and January 24,
- 1991, and by teleconference on October 9, 1990 between Mr. Nick Spagnoletti of your staff and the NRC staff, Niagara Mohawk Power Corporation (NMPC) responded to the SBO rule.
NMPC's responses have been reviewed by the NRC staff and by our contractor, Science Applications International Corporation (SAIC).
The results of the review are documented in the enclosed Safety Evaluation and the SAIC Technical Evaluation Report (TER), SAIC-91/6661, "Nine Mile Point Nuclear Power Station Unit 1, Station Blackout Evaluation,"
dated May 15, 1991.
NMPC calculated a minimum acceptable station blackout duration of four hours for Nine Mile Point 1 and indicated that no modifications will be necessary to attain this coping duration.
Based on our review of your responses, we find that the design of Nine Mile Point 1 conforms with the SBO rule, the guidance of Regulatory Guide 1.155, Nuclear Management and Resources Council (HUMARC) 87-00, and NUMARC 87-00 Supplemental guestion/Answers and Maior Assumptions, dated December 27, 1989, (issued to the industry by NUMARC January 4, 1990).
This finding is contingent upon your confirmation, within 30 days from receipt of this letter, of the resolution of the recommendations identified in the enclosed Safety Evaluation and presentation of a schedule for their implementation in accordance with 10 CFR 50.63(c)(4).
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I g5 Mr. B. Ralph Sylvia Ouly 1, 1991 All analyses, confirmations, and other documentation supporting your SBO submittals should be maintained and available for further NRC staff inspection and assessment.
The NRC staff is currently considering Technical Specifications (TS) for SBO equipment in context of the TS Improvement Program.
In the interim, plant procedures to reflect the appropriate testing and surveillance requirements should be in place to ensure the operability of the necessary SBO equipment.
You will be notified if a determination is made that TS are required for SBO equipment.
This requirement for confirmation and information affects one respondent; therefore, is not subject to Office of Management and Budget review under P.L.96-511.
Enclosure:
Safety Evaluation cc w/enclosure:
See next page Sincerely, r"~"-P,/ 8~.>
Donald S. Brinkman, Senior Project Manager Project Directorate I-1 Division of Reactor Projects -
I/II'ffice of Nuclear Reactor Regulation
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Ra 1 ph Sy 1 v i a Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station Unit No.
1 CC:
Mr. Mark J. Wetterhahn, Esquire Winston 5 Strawn 1400 L Street, NW.
Washington, D.C.
20005-3502 Supervisor Town of Scriba R.
D. ¹4
- Oswego, New York 13126 Mr. Joseph F. Firlit Vice President - Nuclear Generation Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station Post Office Box 32
- Lycoming, New York 13093 Resident Inspector U.S. Nuclear Regulatory Commission Post Office Box 126
- Lycoming, New York 13093 Mr. Gary D. Wilson, Esquire Niagara Mohawk Power Corporation 300 Erie Boulevard West
- Syracuse, New York 13202 Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, Pennsylvania 19406 Ms.
Donna Ross New York State Energy Office 2 Empire State Plaza 16th Floor
- Albany, New York 12223 Mr. Kim Dahlberg Unit 1 Station Superintendent Nine Mile Point Nuclear Station Post Office Box 32
- Lycoming, New York 13093 Mr. David K. Greene Manager Licensing Niagara Mohawk Power Corporation 301 P la infiel d Road
- Syracuse, New York 13212 Charlie Donaldson, Esquire Assistant Attorney General New York Department of Law 120 Broadway New York, New York 10271 Mr. Paul D. Eddy State of New York Department of Public Service Power Division, System Operations 3 Empire State Plaza
- Albany, New York 12223
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