ML20045D572
| ML20045D572 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 06/24/1993 |
| From: | Menning J Office of Nuclear Reactor Regulation |
| To: | Sylvia B NIAGARA MOHAWK POWER CORP. |
| References | |
| GL-89-10, TAC-M86321, NUDOCS 9306290160 | |
| Download: ML20045D572 (4) | |
Text
1 o
UNITED STATES J
g NUCLEAR REGULATORY COMMISSION 3
a ti
- j WASHINGTON, D. C. 20555 k...I!.. /
June 24, 1993 Docket No. 50-410 Mr. B. Ralph Sylvia Executive Vice President, Nuclear l
Niagara Mohawk Power Corporation i
301 Plainfield Road i
Syracuse, New York 13212 l
Dear Mr. Sylvia:
SU3]ECT:
REQUEST FOR ADDITIONAL INFORMATION ON NINE MILE POINT NUCLEAR STATION, UNIT 2 - SCHEDULE EXTENSION FOR GENERIC LETTER 89-10 PROGRAM (TAC NO. M86321)
In Generic Letter (GL) 89-10, " Safety-Related Motor-Operated Valve Testing and Surveillance," the NRC staff requested nuclear power plant licensees to develop programs to verify the capability of safety-related motor-operated valves (MOVs) to perform their safety functions by June 28, 1994, or three refueling outages after December 28,1989, (whichever is later).
Niagara Mohawk Power Corporation (NMPC)-indicated in a letter dated February 5,1992, that it intended to meet the schedule and recommendations of GL 89-10 at Nine Mile Point Nuclear Station, Unit 2 (NMP-2).
By letter dated April 15, 1993, NMPC informed the NRC of its decision to extend the schedule for completing the recommended actions of GL 89-10 beyond June 28, 1994.
NMPC stated in the letter dated April 15, 1993, that a sensitivity analysis had been performed using the NMP-2 Probabilistic Risk Assessment to determine the contribution of MOVs to overall plant safety. The analysis found that 57 MOVs have sufficient contribution to overall plant safety to warrant their testing by June 28, 1994. NMPC further stated that the remaining MOVs within the scope of GL 89-10 would be tested within 3 months of the end of the fourth refueling outage.
The staff has reviewed NMPC's letter of April 15, 1993, and determined that additional information is needed to complete evaluation of NMPC's justification for its extension of the schedule for testing MOVs within the scope of GL 89-10. We, therefore, request that NMPC provide the information identified below:
(1) the completion status of NMPC's GL 89-10 program as of June 28, 1994, including the valve type, size, safety function, and risk significance of the MOVs not yet set up under the program by June 28, 1994; (2). the basis used for confirming the operability of each MOV not set up under the program by June 28, 1994; and 1 0 N0001G hI ung sqge
+
at P
e Mr. B. Ralph Sylvia June 24, 1993 (3) the schedule for completing M0V testing and any modifications for those MOVs not set up by June 28, 1994.
While the information identified above is required for the staff to complete its evaluation,- the staff will 'also consider the following factors in assessing NMPC's justification for the schedule extension:
(1) the extent of completed M0V testing under dynamic conditions; (2) the extent that plant and industry data have been used to establish the sizing and switch setting methodology; (3) the maintenance and modification activities to improve the performance of the MOVs and to provide assurance that marginal and deficient MOVs have been addressed; and (4) the justification for any grouping methods including design-basis test data and comparison with industry data.
In order to facilitate timely resolution of this matter, we request that within 30 days cf receipt of this letter NMPC either provide a written response or schedule a meeting with the staff during which the requested information would be presented to and discussed with the staff.
This requirement affects one respondent and, therefore, is not subject to Office of Management and Budget review under P.L.96-511'.
Sincerely,
~
%~3 John E. Menning, Project Manager Project Directorate I-1 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation cc:
See next page
i Mr. B. Ralph Sylvia Nine Mile Point Nuclear Station Niagara Mohawk Power Corporation Unit No. 2 cc:
Mark J. Wetterhahn, Esquire Regional Administrator, Region I Winston & Strawn U. S. Nuclear Regulatory Commission 1400 L Street, NW.
475 Allendale Road Washington, DC 20005-3502 King of Prussia,'PA 19406 Mr. Richard Goldsmith Charles Donaldson, Esquire Syracuse University Assistant Attorney General College of Law New York Department of Law E. I. White Hall Campus 120 Broadway Syracuse, New York 12223 New York, New York 10271 Resident Inspector Mr. Richard M. Kessel Nine Mile Point Nuclear Station Chair and Executive Director P. O. Box 126 State Consumer Protection Board Lycoming, New York 13093 99 Washington Avenue Albany, New York 12210 Gary D. Wilson, Esquire Niagara-Mohawk Power Corporation Mr. Martin J. McCormick Jr.
300 Erie Boulevard West Plant Manager, Unit 2 Syracuse, New York 13202 Nine Mile Point Nuclear Station Niagara Mohawk Power Corporation Mr. David K. Greene P. O. Box 32 Manager Licensing Lycoming, New York 13093 Niagara Mohawk Power Corporation 301 Plainfield Road Mr. Neil S. Carns Syracuse, New York 13212 Vice President'- Nuclear Generation Nine Mile Point Nuclear Station Ms. Donna Ross Niagara Mohawk Power Corporation New York State Energy Office P. O. Box 32 2 Empire State Plaza Lycoming, New York 13093 16th Floor Albany, New York 12223 Supervisor Town of Scriba Route 8, Box 382 Oswego, New York 13126
l Mr. B. Ralph Sylvia June 24, 1993 (3) the schedule for completing MOV testing and any modifications for those MOVs not set up by June 28, 1994.
While the information identified above is required for.the staff to complete its evaluation, the staff will also consider the following factors in assessing NMPC's justification for the schedule extension:
(1) the extent of completed MOV testing under dynamic conditions; (2) the extent that plant and industry data have been used to establish the sizing and switch setting methodology; (3) the maintenance and modification activities to improve the performance of the MOVs and to provide assurance that marginal and deficient MOVs have been addressed; and I
(4) the justification for any grouping methods including design-basis test data and comparison with industry data.
In order to facilitate timely resolution of this matter, we request that within 30 days of receipt of.this letter NMPC either provide a written response or schedule a meeting with the staff during which the requested information would be presented to and discussed with the staff.
This requirement affects one respondent and, therefore, is not subject to Office of Management and Budget review' under P.L.96-511.
Sincerely, Original signed by:
John E. Menning, Project Manager Project Directorate I-l Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation cc: See next page pistribution:
Docket File-CVogan A. Gody Jr., 13/E/21 NRC & Local PDRs JMenning PDI-1 Reading OGC SVarga ACRS (10)
JCalvo CCowgill, RGN-I RAcapra TScarbrough, 7/E/23 LA:PDI-l PM:PDI-1 D:PDI-1 CVogan il,d JMenningMm RACapra W b/ dh93 L/av/93 (o 'U/93
/ /
/ /
/ /
f
/
OFFICIAL RECORD COPY FILENAME: NM286321.LTR