ML17059A833
| ML17059A833 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 05/25/1995 |
| From: | Edison G Office of Nuclear Reactor Regulation |
| To: | Sylvia B NIAGARA MOHAWK POWER CORP. |
| References | |
| TAC-M92337, NUDOCS 9506020345 | |
| Download: ML17059A833 (6) | |
Text
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'm I'r, B. Ralph Sylvia ~
Executive Vice Presi~,
Nuclear Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station P.O.
Box 63 I
- Lycoming, NY 13093 U
SUBJECT:
NINE MILE POINT NUCLEAR STATION, UNIT 2, EVALUATION OF INDICATIONS ON RECIRCULATION SYSTEM NOZZLES (TAC NO. H92337)
I
Dear Hr. Sylvia:
The purpose of this letter is to inform you that we find acceptable your assessment of the two flaw indications on recirculation system nozzles.
We agree with your assessment that the plant can be safely operated for the next operating cycle of 17 months with indications present.
In a letter dated May 20,
- 1995, and supplemented May 24,
- 1995, Niagara Mohawk Power Corporation provided an evaluation of a flaw indication on the nozzle-to-safe end weld of each of two Recirculation System nozzles on the reactor vessel.
These indications did not meet the criteria of Section XI of the ASHE Code for continued operation without evaluation.
In telephone discussions on May 18, 19, 22, 23, and 25, the NRC staff discussed these indications and your assessment of them.
Your May 24 letter satisfactorily responded to questions we asked by telephone.
Our conclusion that continued operation is acceptable for the next operating cycle of 17 months is based on your acceptable fracture analysis with conservative assumptions of flaw geometry,
- location, and growth
- rate, and upon your data that show that the 2 flaw indications have existed since at least 1990 without any apparent change in size or location.
We also note your commitment to inspect these indications in the next refueling outage.
Our complete safety evaluation will be transmitted in a letter to follow.
Docket No. 50-410 cc:
See next page bcc:
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Sincerely, Original signed by:
Gordon E. Edison, Senior Project Manager Project'Directorate I-l
" 'ivision of Reactor Projects I/II Office of Nuclear Reactor Regulation
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 2055&4001 May 25, 1995 Mr. B. Ralph Sylvia Executive Vice President, Nuclear Niagara Mohawk Power Corporation Nine Hile Point Nuclear Station P.O.
Box 63
- Lycoming, NY 13093
SUBJECT:
NINE MILE POINT NUCLEAR STATION, UNIT 2, EVALUATION OF INDICATIONS ON RECIRCULATION SYSTEM NOZZLES (TAC NO. H92337)
Dear Hr. Sylvia:
The purpose of this letter is to inform you that we find acceptable your assessment of the two flaw indications on recirculation system nozzles.
We agree with your assessment that the plant can be safely operated for the next operating cycle of 17 months with indications present.
In a letter dated Hay 20,
- 1995, and supplemented Hay 24,
- 1995, Niagara Mohawk Power Corporation provided an evaluation of a flaw indication on the nozzle-to-safe end weld of each of two Recirculation System nozzles on the reactor vessel.
These indications did not meet the criteria of Section XI of the ASME Code for continued operation without evaluation.
In telephone discussions on May 18, 19, 22, 23, and 25, the NRC staff discussed these indications and your assessment of them.
Your Hay 24 letter satisfactorily responded to questions we asked by telephone.
Our conclusion that continued operation is acceptable for the next operating cycle of 17 months is based on your acceptable fractur e analysis with conservative assumptions of flaw geometry, location, and growth
- rate, and upon your data that show that the 2 flaw indications have existed since at least 1990 without any apparent change in size or location.
We also note your commitment to inspect these indications in the next refueling outage.
Our complete safety evaluation will be transmitted in a letter to follow.
Sincerely, Docket No. 50-410 cc:
See next page Gordon E. Edison, Senior Project Manager Project Directorate I-l Division of Reactor Projects I/II Office of Nuclear Reactor Regulation
J l
B. Ralph Sylvia Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station Unit 2 CC:
Hark J. Wetterhahn, Esquire Winston 5 Strawn-1400 L Street, NW.
Washington, DC 20005-3502 Hr. Richard Goldsa1ith Syracuse University College of Law E. I. White Hall Campus
- Syracuse, NY 12223 Resident Inspector Nine Hile Point Nuclear Station P.O.
Box 126
- Lycoming, NY 13093 Gary D. Wilson, Esquire Niagara Hohawk Power Corporation 300 Erie Boulevard West
- Syracuse, NY 13202 Hr. David K. Greene Hanager Licensing Niagara Mohawk Power Corporation Nine Hile Point Nuclear Station P.O.
Box 63
- Lycoming, NY 13093 Ms.
Donna Ross New York State
- Energy, Research, and Development Authority 2 Empire State Plaza Suite 1901
- Albany, NY 12223-1253 Supervisor Town of Scriba Route 8, Box 382
- Oswego, NY 13126 Regional Administrator, Region I U. S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 Charles Donaldson, Esquire Assistant Attorney General New York Department of Law 120 Broadway New York, NY 10271 Hr. Richard H. Kessel Chair and Executive Director State Consumer Protection Board 99 Washington Avenue
- Albany, NY 12210 Mr. Kim A. Dahlberg Plant Manager, Unit 2 Nine Hile Point Nuclear Station Niagara Mohawk Power Corporation P.O.
Box 63
- Lycoming, NY 13093 Mr. Louis F. Storz Vice President - Nuclear Generation Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station P.O.
Box 63
- Lycoming, NY 13093 Hr. Hartin J. McCormick, Jr.
Vice President Nuclear Safety Assessment and Support Niagara Hohawk Power Corporation Nine Mile Point Nuclear Station P.O.
Box 63
- Lycoming, NY 13093
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