ML20083B445
| ML20083B445 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 09/17/1991 |
| From: | Parker T NORTHERN STATES POWER CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9109250085 | |
| Download: ML20083B445 (2) | |
Text
4 Northem States Power Comnany 414 Nicollet Mall Minneapohs. Minnesota 55401 1927 Telephone (612) 33#5500 September 17, 1991 Technical Specification TS 3.14.C.2 U S Nuclear Regulatory Commission Attn:
Document Control Desk Washington, DC 20555 PRAIRIE ISLAND NUCLEAR GENERATING PLANT Docket Nos. 50 282 License Nos. DPR-42 50-306 DPR-60 Report of Plans for Alternate Provisions for Inonerable Electriepl Penetration Fire Barriec,5 This letter is provided to document our plans for the administrative control of electrical penetration fire barriers.
Our intentions were discussed with the Prairie Island Project Manager, Armand Masciantonio, and we agreed to document the plans through this lotter.
In accordance with Section 3.14.G.1 of the Prairie Island Technical Specifications, all penetration fire barriers are required to be operable whenever the equipment they are protecting is required to be operable.
Tachnical Specification 3.14.C.2 requires that:
If Specification 3.14.G.1 cannot be met within one hour; a) establish a continuous fire watch on at least one side of the affected penetration (s), or l
b) verify the OPERABILITY of the fire detectors on at least one side of the inoperable barrier and establish an hourly fire watch.
1 Restore the inoperable penetration fire barriers to OPERABLE status within 7 days or submit a special report to the Commission within 30 days outlining the cause of the inoperability and the lans and schedule for restoring the barriers to OPE'1ABLE status.
During the construction phase of our Station Blackout / Electrical Safeguards Upgrade Project it is necessary to either create new electrical penetrations or open existing electrical penetration fi.e barriers. While open we establish a continuous fire watch on at least one,ide of the affected l
9109250085 9i0917 ADOCK0500,{2 gg PDR P
e USNRC Northern States Power Company September 17, 1991 Page 2 penetration.
At the end of the shift we reestablish the operability of the penetration fire barrier and_ discontinue the fire watch.
This is typically tepeated for several days until the work is complete.
Although we therefore are not technically exceeding 7 days with inoperable fire barriers (since they are made operable again each night), we thought it prudent to inform you of this practice. We estimate that we will continue this practice for this project for several more months.
Please contact us if you require additional information, Y
u homas M l'arker Manager Nuclear Support Services c: Regional Administrator - Region III, NRC Senior Resident Inspector, NRC NRR Project Manager, NRC J E Silbere,
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