ML20004C126
| ML20004C126 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 05/22/1981 |
| From: | Clark R Office of Nuclear Reactor Regulation |
| To: | Mayer L NORTHERN STATES POWER CO. |
| Shared Package | |
| ML20004C127 | List: |
| References | |
| IEB-79-01B, IEB-79-1B, NUDOCS 8106010577 | |
| Download: ML20004C126 (3) | |
Text
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_ UNITED STATES
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NUCLEAR REGULATORY COMMISSION ep W ASHINGTON, D. C. 20555
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May 22, 1981 Docket Nos. 50-282 and 50-306 t
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4 Mr. L. O. Mayer, Manager A
Nuclear Support Services Northern States Power Company 414 Nicollet Mall - 8th Floo:-
Minneapolis, Minnesota 55401
SUBJECT:
ENVIRONMENTAL QUALIFICATION OF SAFETY-RELATED ELECTRICAL EQUIPMENT RE: PRAIRIE ISLAND NUCLEAR GENERATING PLANT, UNITS 1 AND 2, LICENSE NOS. DPR-42 AND DPR-60 Reference (a) - Order for Modification of License Concerning the Environmental Qualification of Safety-Related Electrical Equipment dated October 24, 1980,.
Dear Mr. Mayer:
This letter transmits the Safety Evaluation for the Environmental Qualification of Safety-Related Electrical Equipment at your facilities. This evaluation was based on your submittals dated March 3, May 12, May 23, July 10 and October 31, 1980. Our letter of April 1,1981, whict. forwarded our prelim' eary results, indicated that an item-by-item re-evaluation would be required at a later date. This safety evaluation identifies the specific information required by the staff and the actions, on your part, necessary to comply with Reference (a). We request that you provide the information identified in sections 3 and 4 of this Safety Evaluation to us within 90 days of receipt of this letter.
l This safety evaluation addresses only the safety-related electrical equipment exposed to a harsh environment resulting from an accident (i.e., the IEB 79-01B review).
P,eference (a) requires that all safety-related electrical equipment be qualified by June 30, 1982. The HRC review effort for the equipment in mild environments will be addressed by separate correspondence.
Your response may present alternatives to the staff positions in the evaluation.
The staff will consider alternative approaches if these methods are within the D0R Guidelines or NUREG-0588, as appropriate. For example, an acceptable l
alternative to the NRC staff's temperature criterion used for the service conditions (i.e. Section 3.3) must base that service condition on the FSAR analysis or other NRC approved analysis, provided that the specific analysis, together with reference to the previous NRC acceptance of that analysis, accompanies the 90 day response.
In addition, some of the information in the Safety Evaluation may require clarification.
Contact your project manager for assistance in these matters.
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I It remains your responsibility to assure that the qualification deadline is met for all safety-related electrical equipment. The staff's review of your response to this letter should not delay any. action which is required in order to meet the deadline.
j Sincerely, 1
u Robert A. Clark, Chief Operating Reactors Branch #3 Division of Licensing
Enclosures:
1.
SER 2.
TER cc w/ enclosures:
a See next page l
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- "hw-Northern States Power Corpany cc:
Gerald Charnoff, Esquire Bernard M. Cranum Shaw, Pittman, Potts and Trowbridge Bureau of Indian Affairs, 001 1800 M Street, N.W.
831 Second Avenue South Washington, D. C.
20036 Minneapolis, Minnesota 55402 Ms. Terry Hoffman Director, Criteria and Standards Divisisi Executive Director Office of Radiation Programs (ANR-460)
Minnesota Pollution Control Agency U.S. Environmental Protection Agency 1935 W. County Road B2 Washington, D. C.
20460 Roseville, Minnesota 55113 U. S. Environmental Protection Agency The Environmental Conservation Library Federal Activities Branch Minneapolis Public Library Region V Office 300 Nicollet Mall ATTN: EIS C00PDINATOR Minneapolis, Minnesota 55401 230 South Dearburn Street Chicago, Illinois 60604 Mr. F. P. Tierney, Plant Manager Prairie. Island Nuclear Generating Plant Northern States Power Company Route 2 i
Welch, Minnesota 55089 Chairman, Public Sarvice Commission.
Joclyn F. Olson, Esquire of Wisconsin Special Assistant Attorney General Hill Farms State Office Building Minnesota Pollution Control Agenqy Madison Wisconsin 53702 1935 W. County Road B2 Roseville, Minneosta 55113 Robert L. Nybo, Jr., Chairman Minnesota-Wisconsin Boundary Area Commi ssion 619 Second Street Hudson, Wisconsin 54016 U.S. Nuclear Regulatory Commissien Resident Inspectors Office Route #2, Box 500A Welch, Minnesota 55089 Mr. John C. Davidson, Chairman Goodhue County Board of Commissioners 321 West Third Street Red Wing, Minnesota 55066
.