ML20198G076
| ML20198G076 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 12/21/1998 |
| From: | Lyon C NRC (Affiliation Not Assigned) |
| To: | Richard Anderson NORTHERN STATES POWER CO. |
| References | |
| TAC-M94307, NUDOCS 9812280288 | |
| Download: ML20198G076 (4) | |
Text
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y December 21, 1998 Mr. Rog:r O. Anderson, Director Nucl:ar En rgy Engins: ring Northern States Power Company l
414 Nicollet Mall Minneapolis, Minnesota 55401
SUBJECT:
MONTICELLO NUCLEAR GENERATING PLANT - COMPLETION OF COMMITMENT CONCERNING TORNADO EFFECTS ON THE REACTOR BUILDING SUPERSTRUCTURE (TAC NO. M94307)
Dear Mr. Anderson:
i By letter dated February 12,1996, as supplemented July 19,1996, Northern States Power Company (NSP) notified the NRC that information incorporated by reference into the Updated Safety Analysis Report (USAR) concerning the capability of the Reactor Building superstructure to withstand tornado wind loading conditions was inconsistent with the design basis for the structure as well as specific licensing basis statements contained in the USAR. NSP's letter provided a description of the corrective actions to resolve the identified deviation and established the following commitment:
Modifications are to be implemented to resolve the deviation from the current licensing basis. The modification design will ensure that a failure of the structural members of the Reactor Building superstructure will not occur when exposed to tornado winds.
NSP's letter stated that corrective actions would be implemented by a plant modification performed in accordance with the provisions established by 10 CFR 50.59. By letter dated January 2,1997, NSP notified the NRC that the required modification work to the Reactor Building superstructure had been completed.
This will acknowledge receipt of your January 2,1997, letter notifying the NRC that the commitment identified in your February 12,1996, letter is complete. The staff has no further concerns at this time. Your corrective actions may be examined during future NRC inspections.
If you have any questions _concerning this action, please call me at (301) 415-2296.
Sincerely, Original signed by:
Carl F. Lyon, Project Manager l
Project Directorate ill-1 l
Division of Reactor Projects - lil/IV Office of Nuclear Reactor Regulation l
Docket No. 50-263 l
cc: See next page QlSTRIBUTION.
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Nucleir Energy Engineering Northem St:t:s Powar Company i
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414 Nicollet Mall Minneapolis, Minnesota 55401 i
SUBJECT:
MONTICELLO NUCLEAR GENERATING PLANT - COMPLETION OF l
COMMITMENT CONCERNING TORNADO EFFECTS ON THE REACTOR BUILDING SUPERSTRUCTURE (TAC NO. M94307)
Dear Mr. Anderson:
By letter dated February 12,1996, as supplemented July 19,1996, Northem States Power Company (NSP) notified the NRC that information incorporated by reference into the Updated i
Safety Analysis Report (USAR) conceming the capability of the Reactor Building superstructure to withstand tornado wino loading conditions was inconsistent with the design basis for the i
structure as well as specific licensing basis statements contained in the USAR. NSP's letter provided a description of the corrective actions to resolve the identified deviation and established the following commitment:
Modifications are to be implemented to resolve the devlation from the current licensing basis. The modification design will ensure that a failure of the structural members of the Reactor Building superstructure will not occur when exposed to tomado winds.
NSP's letter stated that corrective actions wou!d be implemented by a plant modification perforrned in accordance with the provisions established by 10 CFR 50.59. By letter dated January 2,1997, NSP notified the NRC that the required modification work to the Reactor Building superstructure had been completed.
This will acknowledge receipt of your January 2,1997, letter notifying the NRC that the commitment identified in your February 12,1996, letter is egmplete. The staff has no further concerns at this time. Your corrective actions may be examined during future NRC inspections.
If you have any questions conceming this action, please call me at (301) 415-2296.
Sincerely, Original signed by:
Carl F. Lyon, Project Manager Project Directorate ill-1 Division of Reactor Projects - Ill/IV Office of Nuclear Reactor Regulation Docket No. 50-263 ce; See next page DISTRIBUTION:
Docket File EAdensam (EGA1)
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DATE 12/6/98 "
12/15/98 A 12/ife /98 U
OFFICIAL RECORD COPY
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j December 21, 1998 Mr. Roger O. Anderson, Director j
Nuclear Energy Engineering Northem States Power Company 414 Nicollet Mall Minneapolis, Minnesota 55401
SUBJECT:
MONTICELLO NUCLEAR GENERATING PLANT - COMPLETION OF
~
COMMITMENT CONCERNING TORNADO EFFECTS ON THE REACTOR BUILDING SUPERSTRUCTURE (TAC NO. M94307)
Dear Mr. Anderson:
By letter dated February 12,1996, as supplemented July 19,1996, Northem States Power Company (NSP) notified the NRC that information incorporated by reference into the Updated Safety Analysis Report (USAR) concerning the capability of the Reactor Building superstructure to withstand tornado wind loading conditions was inconsistent with the design basis for the structure as well as specific licensing basis statements contained in the USAR. NSP's letter provided a description of the corrective actions to resolve the identified deviation and established the following commitment:
Modifications are to be implemented to resolve the deviation from the current licensing basis. The modification design will ensure that a failure of the structural members of the Reactor Building superstructure will not occur when exposed to tornado winds.
(
I NSP's letter stated that corrective actions would be implemented by a plant modification performed in accordance with the provisions established by 10 CFR 50.59. By letter dated January 2,1997, NSP notified the NRC that the required modification work to the Reactor Building superstructure had been completed.
This will acknowledge receipt of your January 2,1997, letter notifying the NRC that the commitment identified in your February 12,1996, letter is complete. The staff has no further concerns at this time. Your corrective actions may be examined during future NRC inspections.
j If you have any questions concei '"q this action, please call me at (301) 415-2296.
Sincerely, CeaFhy Carl F. Lyon, Project Manager Project Directorate Ill-1 Division of Reactor Projects - lil/IV Office of Nuclear Reactor Regulation i
Docket No. 50-263 2
cc: See next page 4
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Mr. Roger O. Anderson, Director Monticello Nuclear Generating Plant Northem States Power Company 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 Attomey General Monticello, Minnesota 55362 Office of the Attorney General 445 Minnesota Street i
Plant Manager Suite 900 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 lil U.S. Nuclear Regulatory Commission 801 Warrenville Road Lisle, Illinois 60532-4351 Commissionerof Health Minnesota Department of Health 717 Delaware Street, S. E.
Minneapolis, Minnesota 55440 Darla Groshens, Auditor / Treasurer Wright County Govemment Center 10 NW Second Street Buffalo, Minnesota 55313 January 1995
.