ML20212J648

Ro:On 870305,both Fire Suppression Sys High Pressure Pumps Inoperable.Caused by Diesel Driven Fire Pump FP-P-2 Repeatedly Attempting to Autostart When Pump FP-P-1 Removed from Svc.Pump FP-P-1 Returned to Svc.Rept Will Be Submitted

ML20212J648
Person / Time
Site:	Beaver Valley
Issue date:	03/05/1987
From:	Druga R DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 8703090083
Download: ML20212J648 (2)

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'Af Tetophm 9:23 na esco wue: arorcup P.O. eom a shtspingport,PA t$077.C304 March 5, 1987 ht1SS1:3080 Confirmation of Entry into Fire Suppression Technteal Specif_ication Action Statement 4.7.14.1.b United States Naelear Regulatory Coccission Document Control Desk Washington, DC 20555 Gentlement In accordance with Technical Specification 3.7.14.1, the following special report confirmation is submitted:

On March 5, 1987, both fire suppression system high prassure pumps were ineperable from 1125 hours0.013 days <br />0.313 hours <br />0.00186 weeks <br />4.280625e-4 months <br /> to 1259 hours0.0146 days <br />0.35 hours <br />0.00208 weeks <br />4.790495e-4 months <br />. The electrical motor driven fire pump [FP-P-1] had been removed from service at 0045 hours5.208333e-4 days <br />0.0125 hours <br />7.440476e-5 weeks <br />1.71225e-5 months <br /> on March 5,1987 for maintenance on its auto-start pressure switch. At 1116 hours0.0129 days <br />0.31 hours <br />0.00185 weeks <br />4.24638e-4 months <br /> on March 5,1987, the " Engine Driven Fire Pu=p Local Panel Trouble" alarm in the control room began flashing in and out of the alar =

condition. Leca11y, an operator discovered that the diesel driven fire pump (FP-P-2] was repaatedly attempting to auto-start. This centinued until the operator placed tha local control switch for [FP-P-2] in the OFF position s.t 1125 hours0.013 days <br />0.313 hours <br />0.00186 weeks <br />4.280625e-4 months <br /> on liarch 5,1987. At this time, both fire pumps were inoperable.

Efforts were immediately initiated to return [FP-P-1} to service. The pump was returned to service and started running at 1259 hours0.0146 days <br />0.35 hours <br />0.00208 weeks <br />4.790495e-4 months <br /> on March 5, 1987. The only naintenance that had bean performed on the pump was on its pressure switch. The pressure switch provides an auto-start signal to the pump on low header pressure. As the pressure switch had net been tested after maintentnce and was still suspect, it was decided to start [FP-P-11 and leave it running until the switch can be tested.

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Nrrch 5, 1987 NDISS1:3080 Page two Investigation into the failure cause of [FP-P-2} is continuing. A written Special Report will be submitted within 14 days of this event as per Technical Specification 3.7.14.1'.

1. ff1 R. . Druga Acting Plant Manager DSC/ vat ces Dr. Tho:nu E. Murley Regional Administrator United States Nuclear Regulatory Comission Region I King of Prussia. PA 19406 Mr. W. Troskoski Nuclear Fagulatory Cor.: mission BVPS Site Inspector l

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