ML20063M174

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Special Rept:On 940117,fire Protection Equipment Removed from Svc for Greater than 14 Days.No NRC Commitments Being Made in Ltr
ML20063M174
Person / Time
Site: Prairie Island  Xcel Energy icon.png
Issue date: 03/03/1994
From: Richard Anderson
NORTHERN STATES POWER CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9403100367
Download: ML20063M174 (2)


Text

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, 4 Northem States Powe' Company 414 Nicollet Mall Minneapolis, Minnesota 55401 1927 Telephone (612) 330-5500 March.3, 1994 Technical Specification Section 3.14 U S Nuclear Regulatory Commission Attn: Document Control Desk Wanhington, DC 20555 PRAIRIE ISLAND NUCLEAR GENERATING PLANT.

Docket Nos. 50-282 License Nos. DPR-42 50-306 DPR-60 Report of Fire Protection Equipment j Removed from Service for areaLer Than Foujtteen Days This letter in to document the inoperability of deluge systems and a fire

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detection panel in the DS/D6 Diesel Generator Building.

In accordance with Section 3.14.A.1 of the Prairie Island Technical Specifications, the minimum fire detection instrumentation for each fire detection zone shown in Table 3.14-1 shall be OPERABLE whenever equipment in that fire detection zone is required to be operable.

TS 3.14.A.2 requires that:

If TS 3.14.A.1 cannot be met: ,

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a) Within one hour, establish a fire watch patrol to inspect zone with the inoperable instruments at least once per hour.

b) Restore the inoperable instruments to operable status within.14 days or submit a special report to the Commission within 30 days ~

outlining the cause of the malfunction and the plans for restoring the instruments to OPERABLE status.

In accordance with Section 3.14.C.1 the listed spray.and sprinkler systems are' required to be OPERABLE whenever equipment protected by this spray and oprinkler system is required to be OPERABLE.

TS 3.14.C.2 requires thatt j If TS 3.14.C.1 cannot be met, a continuous fire watch with backup fire suppression equipment shall be established within one hour. Restore inoperable spray and sprinkler systems to' OPERABLE status within 14 days i O-1 Y

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US NRC' NORTHERN STATES POtWER COMPANY H&rch 3, 1994 Page 2 i

I or submit a special report to the Commission within 30 days outlining the cause of inoperability and the plans for restoring the system to OPERABLE status.

On January 17, 1994 the locil Fire Panel for the D5/D6 building was taken out  !

of service to rewire the dr.tector circuits for the detectors that provide I input to the preaction valves from class B to class A. During this time the l deluge system for the D5 and D6 diesels were also out of service but were available for use if needed by manual actuation. The panel and the deluge systems were returned to service on February 1, 1994. During the time the panel and deluge systems were out of service a fire watch was established for the affected areas.

The D5/D6 fire panel and deluge valves have not been added to the Prairie Island Technical specifications but the above actions were taken as compensatory measures since the diesels they are protecting are safety related.

No new NRC commitments are being made in this letter.

Please contact Jack Leveille (612-388-1121, Ext. 4662) if you require additional information.

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/ l A stbI -

Ro er O Anderson Director Licensing and Management Issues i

c Regional Administrator - Region III, NRC Senior Resident Inspector, NRC l NRR Project Manager, NRC J E Silberg l

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