ML17059A735
| ML17059A735 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 03/17/1995 |
| From: | Edison G Office of Nuclear Reactor Regulation |
| To: | Sylvia B NIAGARA MOHAWK POWER CORP. |
| Shared Package | |
| ML17059A736 | List: |
| References | |
| TAC-M91705, NUDOCS 9503220199 | |
| Download: ML17059A735 (6) | |
Text
March 17, 1995 Mr. B. Ralph Sylvia Executive Vice President, Nuclear Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station P.O.
Box 63
- Lycoming, NY 13093 Distribution:
Docket File PUBLIC PD I-1 Rdg.
SVarga JZwolinski WKoo LHarsh OGC CVogan ACRS (4)
GEdison CCowgill, RI JStrosnider JDavis LBanic
SUBJECT:
NINE MILE POINT NUCLEAR STATION UNIT NO.
1 (NMP1),
EVALUATION OF INDICATION ON CORE SPRAY SPARGER (TAC NO. M91705)
Dear Hr. Sylvia:
The purpose of this letter is to transmit our safety evaluation of the subject matter.
We have concluded that your evaluation is acceptable and that NHPl can be safely operated during the 1995-1997 operating cycle.
In a February 23, 1995, telephone conference, Niagara Mohawk Power Corporation (NMPC) notified NRC of a crack indication on core spray sparger loop "A", near nozzle 23A.
In a letter dated March 6,
- 1995, NMPC provided an evaluation of the indication, its propensity to grow, and its impact on the structural and hydraulic performance of the sparger.
In a letter dated March 14,
- 1995, NMPC provided a bounding generic loose part analysis.
The NMPC evaluation has concluded that NMPl could safely operate with the flaw until at least the next refueling outage, at which time inspections would again be performed.
The NRC staff has completed its review of the NHPC evaluation and concludes it is acceptable and that NHPl can be safely operated during the next cycle.
The staff understands that NHPC will submit a more detailed loose part analysis by April 30, 1995.
In view of the branching nature of the observed indication, we recommend that analysis address the potential impact on safe operation resulting from loose pipe fragments of various sizes.
Sincerely, Original signed by Gordon E. Edison, Senior Project Manager Project Directorate I-l Division of Reactor Projects I/II Office of Nuclear Reactor Regulation Docket No. 50-220
Enclosure:
Safety Evaluation cc w/encl:
See next page DOCUMENT NAME:
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 March 17, 1995 Hr. B. Ralph Sylvia Executive Vice President, Nuclear Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station P.O.
Box 63
- Lycoming, NY 13093
SUBJECT:
NINE MILE'POINT NUCLEAR STATION UNIT NO.
1 (NMP1),
EVALUATION OF INDICATION ON CORE SPRAY SPARGER (TAC NO. M91705)
Dear Mr. Sylvia:
The purpose of this letter is to transmit our safety evaluation of the subject matter.
We have concluded that your evaluation is acceptableand that NHP1 can be safely operated during the 1995-1997 operating cycle.
In a February 23, 1995, telephone conference, Niagara Mohawk Power Corporation (NMPC) notified NRC of a crack indication on core spray sparger loop "A", near nozzle 23A.
In a letter dated March 6,
- 1995, NMPC provided an evaluation of the indication, its 'propensity to grow, and its impact on the structural and hydraulic performance of the sparger.
In a letter dated March 14,
- 1995, NHPC provided a bounding generic loose part analysis.
The NHPC evaluation has concluded that NHPl could safely operate with the flaw until at least the next refueling outage, at which time inspections would again be performed.
The NRC staff has completed its review of the NHPC evaluation and concludes it is acceptable and that NMP1 can be safely operated during the next cycle.
The staff understands that NHPC will submit a more detailed loose part analysis by Ap}il 30, 1995.
In view of the branching nature of the observed indication, we recommend that analysis address the potential impact on safe operation resulting from loose pipe fragments of various sizes.
Sincerely, Docket No. 50-220
Enclosure:
Safety Evaluation cc w/encl:
See next page Gordon E. Edison, Senior Project Manager Project Directorate I-1 Division of Reactor Projects I/II Office of Nuclear Reactor Regulation
B. Ralph Sylvia Niagara Mohawk Power Corporation Nine Hile Point Nuclear Station Unit No.
1 CC:
Mark J. Wetterhahn, Esquire Winston 8 Strawn 1400 L Street, NW Washington, DC 20005-3502 Supervisor Town of Scriba Route 8, Box 382
- Oswego, NY 13126 Mr. Louis F. Storz Vice President Nuclear Generation Niagara Mohawk Power Corporation Nine Nile Point Nuclear Station P.O.
Box 63
- Lycoming, NY 13093 Resident Inspector U.S. Nuclear Regulatory Commission P.O.
Box 126
- Lycoming, NY 13093 Gary D. Wilson, Esquire Niagara Mohawk Power Corporation 300 Erie Boulevard West
- Syracuse, NY 13202 Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 Hs.
Donna Ross New York State Energy Office 2 Empire State Plaza 16th Floor
- Albany, NY 12223.
Hr. Richard B. Abbott Unit 1 Plant Manager Nine Nile Point Nuclear Station P.O.
Box 63
- Lycoming, NY 13093 Mr. David K. Greene Manager Licensing Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station P.O.
Box 63
- Lycoming, NY 13093 Charles Donaldson, Esquire Assistant Attorney General New Yor k Department of Law 120 Broadway
'ew York, NY 10271
'r.
Paul D.
Eddy State of New York Department of Public Service Power Division, System Operations 3 Empire State Plaza
- Albany, NY 12223 Hr. Hartin J. HcCormick, Jr.
Vice President Nuclear Safety Assessment and Support Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station P.O.
Box 63
- Lycoming, NY 13093
i