ML20151W925
| ML20151W925 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 09/10/1998 |
| From: | Kim T NRC (Affiliation Not Assigned) |
| To: | Richard Anderson NORTHERN STATES POWER CO. |
| References | |
| GL-96-05, GL-96-5, TAC-M97070, NUDOCS 9809160187 | |
| Download: ML20151W925 (5) | |
Text
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September 10, 1998 Mr. Roger O. Anderson, Director Nuclear Energy Engineering Northern States Power Company 414 Nicollet Mall Minneapolis, Minnesota 55401
SUBJECT:
MONTICELLO NUCLEAR GENERATING PLANT - REQUEST FOR ADDITIONAL INFORMATION REGARDING GENERIC LETTER 96-05 PROGRAM (TAC NO. M97070)
Dear Mr. Anderson:
In a letter dated March 23,1998, the Northern States Power Company (NSP) submitted an updated response to Generic Letter (GL) 96-05, " Periodic Verification of Design-Basis Capability of Safety-Related Motor-Operated Valves," for the Monticello Nuclear Generating Plant indicating its intent to implement the provisions of a Joint Owners Group (JOG) Program on Motor-Operated Valve (MOV) Periodic Verification. The NRC staff has encouraged licensees to participate in the industry-wide JOG program to provide a benefit in reactor safety by sharing expertise and information on MOV performance and to increase the efficiency of GL 96-05 activities at nuclear plants. Licensee participation in the JOG program also minimizes the amount of information necessary for the NRC staff to review each licensee's response to GL 96-05. As a result, the NRC staff requires only limited information, as discussed in the enclosure, to complete its GL 96-05 review for Monticello. NRC requests that NSP respond to the enclosed request for additionalinformation within about 60 days from the date of this letter.
If you have any questions concerning this request, please contact me at (301) 415-1392.
Sincerely, Original signed by:
Tae Kim, Senior Project Manager Project Directorate 111-1 Division of Reactor Projects Ill/IV Office of Nuclear Reactor Regulation Docket No. 50-263
Enclosure:
As stated cc w/ encl: See next page.
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September 10, 1998 i
Mr. Roger O. Anderson, Director Nuclear Energy Engineering Northern States Power Company 414 Nicollet Mall i
Minneapolis, Minnesota 55401
SUBJECT:
MONTICELLO NUCLEAR GENERATING PLANT - REQUEST FOR ADDITIONAL INFORMATION REGARDING GENERIC LETTER 96-05 PROGRAM (TAC NO. M97070)
Dear Mr. Anderson:
In a letter dated March 23,1998, the Northern States Power Company (NSP) submitted an updated response to Generic Letter (GL) 96-05, " Periodic Verification of Design-Basis Capability of Safety-Related Motor-Operated Valves," for the Monticello Nuclear Generating Plant indicating its intent to implement the provisions of a Joint Owners Group (JOG) Program on Motor-Operated Valve (MOV) Periodic Verification. The NRC staff has encouraged licensees to participate in the industry-wide JOG program to provide a benefit in reactor safety by sharing expertise and information on MOV performance and to increase the efficiency of GL 96-05 activities at nuclear plants. Licensee participation in the JOG program also minimizes the amount of information necessary for the NRC staff to review each licensee's response to GL 96-05. As a result, the NRC staff requires only limited information, as discussed in the enclosure, to complete its GL 96-05 review for Monticello. NRC requests that NSP respond to the enclosed request for additional information within about 60 days from the date of this letter.
If you have any questions concerning this request, please contact me at (301) 415-1392.
Sincerely, Original signed by:
Tae Kim, Senior Project Manager Project Directorate lll-1 Division of Reactor Projects ill/IV Office of Nuclear Reactor Regulation Docket No. 50-263
Enclosure:
As stated cc w/ encl: See next page DISTRIBUTION:
Docket File OGC PUBLIC PD3-1 RF EAdensam (EGA1)
ACRS MKunowski, Rlll TScarbrough DOCUMENT NAME: G:\\WPDOCS\\MONTICEL\\ MON 97070.RAI To receive a copy of this document indicate in the box C= Copy w/o attachment / enclosure E= Copy with j
attachment / enclosure N = No copy OFFICE PM PD3-1 LA'PD3-1 C:EMEBM PD.PD3-1 NAME TJKim k
CJamerson (fM h RWessman
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l September 10, 1998 Mr. Roger O. Anderson, Director Nuclear Energy Engineer;ng Northern States Power Company 414 Nicollet Mall l
Minneapolis, Minnesota 55401 l
SUBJECT:
MONTICELLO NUCLEAR GENERATING PLANT - REQUEST FOR ADDITIONAL INFORMATION REGARDING GENERIC LETTER 96-05 PROGRAM (TAC NO. M97070)
Dear Mr. Anderson:
In a letter dated March 23,1998, the Northern States Power Company (NSP) submitted an updated response to Generic Letter (GL) 96-05, " Periodic Verification of Design-Basis l
Capability of Safety-Related Motor-Operated Valves," for the Monticello Nuclear Generating Plant indicating its intent to implement the provisions of a Joint Owners Group (JOG) Program on Motor-Operated Valve (MOV) Periodic Verification. The NRC staff has encouraged l
licensees to participate in the industry-wide JOG program to provide a benefit in reactor safety by sharing expertise and information on MOV performance and to increase the efficiency of GL 96-05 activities at nuclear plants. Licensee participation in the JOG program also minimizes the amount of information necessary for the NRC staff to review each licensee's response to l
GL 96-05. As a result, the NRC staff requires only limited information, as discussed in the enclosure, to complete its GL 96-05 review for Monticello. NRC requests that NSP respond to j
the enclosed request for additional information within about 60 days from the date of this letter.
l l
If you have any questions concerning this request, please contact me at (301) 415-1392.
Sincerely, 4
E P
Tae Kim, Senior Project Manager l
Project Directorate 111-1 l
Division of Reactor Projects Ill/IV i
Office of Nuclear Reactor Regulation l
l Docket No. 50-263
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Enclosure:
As stated cc w/ encl: See next page 4
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l Mr. Roger O. Anderson, Director Monticello Nuclear Generating Plant l
Northern States Power Company l
cc:
J. E. Silberg, Esquire Kris Sanda, Commissioner Shaw, Pittman, Potts and Trowbridge Department of Public Service 2300 N Street, N. W.
121 Seventh Place East Washington DC 20037 Suite 200 St. Paul, Minnesota 55101-2145 U.S. Nuclear Regulatory Commission Resident inspector's Office Adonis A. Nebiett 2807 W. County Road 75 Assistant Attorney General Monticello, Minnesota 55362 Office of the Attorney General 445 Minnesota Street Plant Manager Suite 900 l
Monticello Nuclear Generating Plant St. Paul, Minnesota 55101-2127 ATTN: Site Licensing Northern States Power Company
)
2807 West County Road 75 Monticello, Minnesota 55362-9637 Robert Nelson, President Minnesota Environmental Control Citizens Association (MECCA) 1051 South McKnight Road St. Paul, Minnesota 55119 Commissioner Minnesota Pollution Control Agency 520 Lafayette Road St. Paul, Minnesota 55119 Regional Administrator, Region til U.S. Nuclear Regulatory Commission 801 Warrenville Road Lisle, Illinois 60532-4351 Commissioner of Health Minnesota Department of Health 717 Delaware Street, S. E.
Minneapolis, Minnesota 55440 t
Darla Groshens, Auditor / Treasurer Wright Ccunty Government Center 10 NW Second Street Buffalo, Minnesota 55313 January 1995 i
i
n l
REQUEST FOR ADDITIONAL INFORMATION REGARD!NG LICENSEE RESPONSE TO GENERIC LETTER 96-05 AT MONTICELLO NUCLEAR GENERATING PLANT l
1.
In NRC Inspection Report No. 50-263/95003. the NRC staff closed its review of the motor-operated valve (MOV) program implemented at the Monticello Nuclear Generating Plant in response to Generic Letter (GL) 89-10, " Safety-Related Motor-Operated Valve Testing and Surveillance." In the inspection report, the NRC staff noted certain aspects of the licensee's MOV program that would be addressed over the long term. For example, Northern States Power Company (NSP) indicated that it would (1) confirm the valve friction coefficients for MOVs required to close under blowdown conditions using the Electric Power Research Institute MOV Performance Prediction Methodology, (2) evaluate the marginal capability of MOV MO-40858, and (3) i implement a method to extrapolate test data in the valve opening direction. NSP i
addressed its long-term plans for considering stem lubricant degradation in its letter dated March 13,1997, in response to GL 96-05, " Periodic Verification of Design-Basis Capability of Safety-Related Motor-Operated Valves." NSP should describe the actions taken to address the specific long-term aspects of the MOV program at Monticello that were noted in the NRC inspection report.
2.
In a letter dated March 23,1998, NSP updated its commitment to implement the Joint Owners Group (JOG) Program on MOV Periodic Verification in response to GL 96-05.
The JOG program specifies that the methodology and discrimination criteria for ranking MOVs according to their safety significance are the responsibility of each participating licensee. In a previous letter dated March 13,1997, NSP had generally described the risk renking of MOVs at Monticello for application of the JOG interim MOV static diagnostic testing program. Please indicate whether or not NSP is applying the Boiling Water Reactor Owners' Group (BWROG) methodology for ranking MOVs based on their i
safety significance as described in BWROG Topical Report NEDC-32264 and the NRC safety evaluation dated February 27,1996. If not, please describe the methodo'ogy used for risk ranking MOVs at Monticello in more detail.
j 3.
The JOG program focuses on the potential age-related increase in the thrust or torque required to operate valves under their design-basis conditions. In the NRC safety evaluation dated October 30,1997, on the JOG program, the NRC staff specified that licensees are responsible for addressing the thrust or torque delivered by the MOV motor actuator and its potential degradation. NSP should describe the plan at Monticello for ensuring adequate MOV motor actuator output capability, including consideration of the recent guidance in Limitorque Technical Update 98-01 and its Supplement 1.
ENCLOSURE