ML20106A627
| ML20106A627 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 09/23/1992 |
| From: | Parker T NORTHERN STATES POWER CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| IEB-92-001, IEB-92-1, NUDOCS 9209290229 | |
| Download: ML20106A627 (3) | |
Text
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r Northem States Power Company 414 Nicollet Mall Minneapohs, Minnesota 55401 1927 Telephone (612) 330 5500 September 23, 1992 NRC Bulletin 92-01 U S Nuclear Regulatory Commission Attn:
Document Control Desk Washington, DC 20555 PRAIRIE IS!AND NUCLEAR GENERATING PLANT Docket Nos. 50-282 License Nos. DPR-42 50-306 DPR-60 Response to NRC Bulletin 92-01, Supplement 1 Failure of Thermo-Lag 330 Fire Barrier System To Perform 1_ts Specified Fire Endurance Funct hn On June 24, 1992, NRC Bulletin 92-01 was received at Prairie Island.
The Bulletin required that each licensee submit a written response to questions concerning use of Thermo Lag at each facility.
Based on our evaluation of the information contained in the original 3ulletin, all fire barriers where Thermo-Lag fire barrier material is used were declared inoperable on June 24, 1992 and comptnsatory measures were established.
On August 31, 1992, NRC Bulletin 92-01,. Supplement 1, was received at Prairie Island. The Supplement required that each licensee submit a written response to further questions concerning use of Thermo Lag at each facility.
To comply with the requested actions of HRC Bulletin 92-01, supplement 1, no changes in our actiors are necessary.
Thermo-Lag fire barrier material is used in six individual fire areas at Prairie-Island. A once per-hour roving fire watch was estt.blished in response to the original Bulletin. This fire watch covers all six fire areas in which l
Thermo-Lag fire barrier material is used, regardless of the size of the barrier. This fire watch will be continued until the fire barriers can be dec'ared operable.
The Bulletin also asked for information to help NRC evaluate the cost of complying with the Bulletin.
That information follows:
l 1.
Staff time and cost to perform fire watches:
220 hours0.00255 days <br />0.0611 hours <br />3.637566e-4 weeks <br />8.371e-5 months <br /> /wuck, about $3000 per week, 2.
Staff tLne and costs to date to prepace documentation: $89,000.
1 9209290229 9po923 I
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- Sep'tember 23, 1992
-Page 2
- Please centact es if you have any questions related to our it.sponso,
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'I iornas M Parker Manager
. Nuclear Support Services c: Regional Adrainir,trator - Region III, NRC Senior Resident Inspector, ilRC NRR Project Manager, NRC J E S11 berg At.achment: Affidavit s
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s UNITED STATES NUCLEAR REGUIATORY COMMISSION NORTilERN STATES POWFR COMPANY PRAIRIE ISIAND NUCLEAR GENERATING PLANT DOCKET No. 50 282 50-306 FAILURE OF THERMO-IAC 330 FIRE BARRIER SYSTEM TO PERFORM ITS SPECIFIED FIRE ENDURANCE FUNCTION Northern States Power Company, a Minnesoca corporation, with this letter is submitting information requested by NRC Bulletin 92-01, Supplement 1.
i This letter contains no restricted or other defense information.
NORTilERN STAT P. WEFT'0} 'ANY By l@ - (,t s
/ fliomas 5 Parker Manager, Nuclear Support Services On this h _ day of_ _ _ _ _
d(before me a notary public in and for said County, personally afieared Thomas M Parker, Manager, Nuclear Support Services, and being first duly sworn acknowledged that he is authorized to execute this document on behalf of Northern States Power Com"any, that he knows the contents thereof, and that to the best of his knowledge, information, and belief the statements made in it are true and that it is not
-interposed for delay.
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