ML17059A121

Advises Staff of Results of Ultrasonic Insp of High Pressure Core Spray Weld During Current Refueling Outage in

ML17059A121
Person / Time
Site:	Nine Mile Point
Issue date:	11/22/1993
From:	Menning J Office of Nuclear Reactor Regulation
To:	Sylvia B NIAGARA MOHAWK POWER CORP.
References
TAC-M86964, NUDOCS 9312080078
Download: ML17059A121 (6)

Text

p,R REG(g 0

I OO 0~

/p ++**+

Docket No. 50-410 UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 November 22, 1993 Hr. B. Ralph Sylvia Executive Vice President, Nuclear Niagara Mohawk Power Corporation 301 Plainfield Road

Syracuse, New York 13212

SUBJECT:

RESULTS OF INSPECTION OF HIGH PRESSURE CORE SPRAY NOZZLE SAFE-END EXTENSION WELD DURING THIRD REFUELING OUTAGE (TAC NO.

M86964)

By letter dated July 8,

1993, Niagara Mohawk Power Corporation (NMPC) committed to continue to monitor at each refueling outage an indication in the weld joining the high pressure core spray nozzle safe end to safe-end extension and, if the ultrasonic inspection shows any growth above the defined acceptance criteria, to implement a weld overlay repair.

The NRC staff approved this commitment in its letter and safety evaluation dated August 27, 1993.

NMPC advised the staff of the results of ultrasonic inspection of the high pressure core spray weld during the current (third) refueling outage in a letter dated November 4, 1993.

Consistent with the staff's safety evaluation dated August 27,

1993, no repair of the weld is required during this refueling outage since inspection results are within the acceptance criteria.

The staff appreciates NHPC advising us of the results of the recent ultrasonic inspection, and we request to be advised of the results of future inspections of the high pressure core spray weld.

Sincerely, cc:

See next page W(JLM cL.P~~

John E. Henning, Project Manager Project Directorate I-1 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation 9312080078'931122 PDR ADOCK:'05000410 P

PDR 29~178 NIIC FEE C~ ~V I

[.D

'1 a

U P

Hr. 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 Mr. Richard Goldsmith Syracuse University College of Law E. I. White Hall Campus

Syracuse, New York 12223 Resident Inspector Nine Mile Point Nuclear Station P.O.

Box 126

Lycoming, New York 13093 Gary D. Wilson, Esquire Niagara Mohawk Power Corporation 300 Erie Boulevard West

Syracuse, New York 13202 Hr. David K. Greene Manager Licensing Niagara Mohawk Power Corporation 301 Plainfield Road

Syracuse, New York 13212 Ms. Donna Ross New York State Energy Office 2 Empire State Plaza 16th Floor

Albany, New York 12223 Supervisor Town of Scriba Route 8, Box 382

Oswego, New York 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, New York 10271 Mr. Richard H. Kessel Chair and Executive Director State Consumer Protection Board 99 Washington Avenue

Albany, New York 12210 Mr. John H. Hueller Plant Manager, Unit 2 Nine Mile Point Nuclear Station Niagara Mohawk Power Corporation P.O.

Box 32

Lycoming, New York 13093 Vice President Nuclear Generation Nine Mile Point Nuclear Station Niagara Mohawk Power Corporation P.O.

Box 32

Lycoming, New York 13093 Mr. Martin J.

McCormick, Jr.

General Manager Safety Assessment, Licensing, and Training Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station P.O.

Box 63

Lycoming, New York 13093

y A

hh

Docket No. 50-410 Hr.

B. Ralph Sylvia Executive Vice President, Nuclear Niagara Hohawk Power Corporation 301 Plainfield Road

Syracuse, New York 13212

Dear Hr. Sylvia:

November 22, 1993

SUBJECT:

RESULTS OF INSPECTION OF HIGH PRESSURE CORE SPRAY NOZZLE SAFE-END EXTENSION WELD DURING THIRD REFUELING OUTAGE (TAC NO. H86964)

By letter dated July 8,

1993, Niagara Hohawk Power Corporation (NHPC) committed to continue to monitor at each refueling outage an indication in the weld joining the high pressure core spray nozzle safe end to safe-end extension and, if the ultrasonic inspection shows any growth above the defined acceptance crIteria, to implement a weld overlay repair.

The NRC staff approved this commitment in its letter and safety evaluation dated August 27, 1993.

NHPC advised the staff of the results of ultrasonic inspection of the high pressure core spray weld during the current (third) refueling outage in a letter dated November 4,

1993, Consistent with the staff's safety evaluation dated August 27,

1993, no repair of the weld is required during this refueling outage since inspection results are within the acceptance criteria.

The staff appreciates NHPC advising us of the results of the recent ultrasonic inspection, and we request to be advised of the results of future inspections of the high pressure core spray weld.

Sincerely, Original signed by: Robert A. Capra for John E. Henning, Project Hanager Project Directorate I-1 Division of Reactor Projects I/II Office of Nuclear Reactor Regulation cc:

See next page Distribution:

- Docket File

'RC

& Local PDRs PDI-1 Reading S.

Varga J.

Calvo R. A.

Ca ra C.

Vogan J.

Henning OGC ACRS (10)

C. Cowgill J. Str

ider, 7 D/4 LA:PDI-1 CVogan PH: PDI-1 JMennin Ysmm EHCB JStro D:PDI-1 der RACa ra ~

li/l(p/93 LI lt 93 fl 93

<l /2z/93 OFFICIAL RECORD COPY F ILENAHE: NH286964. LTR

r~

L,