ML20006E810

Special Rept Re Plans for Alternate Fire Suppression Sys Redundancy.Diesel Driven Fire Pump 122 Run Daily,Except When Out of Svc from 900126-29

ML20006E810
Person / Time
Site:	Prairie Island
Issue date:	02/20/1990
From:	Parker T NORTHERN STATES POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM), Office of Nuclear Reactor Regulation
References
NUDOCS 9002260372
Download: ML20006E810 (2)

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February 20, 1990 Tech. Spec. 3.'14.B.2~  ;

. Director of~ Nuclear Reactor' Regulation U S Nuclear Regulatory Commission

= Attn: Document. Control. Desk 5 , 3 Washington, DC 20555 7 ,

PRAIRIE ISLAND NUCLEAR GENERATING PLANT ,

. Docket Nos. 50-282 License Nos. DPR-42 50-306 DPR-60 4

Special Report -~ Plans for Alternate "

Fire Sunnression System Redundancy

, .e This-special report is b'eing submitted in'accordance with Prairie' Island

• Technical' Specification 3.14.B.2. . Technical Specification 3.14.B.2 requires

that, "With one or:two of the pumps required by Specification 3.14.B.1.a  ?

inoperable,, restore the inoperable equipment to operable status within seven

-daysior provide a special report to the. Commission within 30 days outlining {'

the; plans'and procedures to be used to provide for tho' loss oi redundancy in

• op the~ Fire Suppression Water system. With an inoperable pump, perform che v 1surve111ance~ required by Specification 4.16.B.2."

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, . On Sunday,EJanuary 21, 1990 Bus 180 was.-taken out of service' for normal outage 1

. maintenance work. This took 121 motor driven fire pump out of service. 121 -!

. motor driven fire pump was out of service until Thursday, February 8,1990.

On-Friday, January 26, 1990, 11 and 12 screenhouse intake bays were drained }

down to do normal' preventive . maintenance on ' circulating water pumps and bay cleaning. This took 122 diesel driven fire pump out of service. 122 diesel driven fire pump was returned to service on Monday, January 29, 1990.

"During this: time 121 screenwash pump, the backup fire pump, was run daily per Technical.' Specification 4.16.B.2. In addition to running 121 screenwash pump -

daily, two of. the cooling water to fire header crossover valves were open to

. provide fire header pressure from the cooling water system. Other crossover 3 ' valves were available, if needed. Also, 122 diesel driven fire pump was'run h

l daily, except when it was out of service from January 26 through January 29, 1

'1990. '

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' 9002260372 900220 PDR ADOCK 05000282

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i Senior Resident; Inspector, NRC

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NRR Project Manager, NRC- t (G Charnoff '

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