05000334/LER-1979-002-03, /03L-0 on 790103:reactor Trip & Safety Injection Occurred.During recovery,1C Charging Pump Had Low Discharge Pressure Due to Faulty Rotating Element in Pump

/03L-0 on 790103:reactor Trip & Safety Injection Occurred.During recovery,1C Charging Pump Had Low Discharge Pressure Due to Faulty Rotating Element in Pump

ML19259B432
Person / Time
Site:	Beaver Valley
Issue date:	02/02/1979
From:	Werling J DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19259B431	List: 05000334/LER-1979-002, Forwards LER 79-002/03L-0 & 79-003/03L-0 05000334/LER-1979-002-03, /03L-0 on 790103:reactor Trip & Safety Injection Occurred.During recovery,1C Charging Pump Had Low Discharge Pressure Due to Faulty Rotating Element in Pump 05000334/LER-1979-003-03, /03L-0 on 790102:increasing Containment Air Partial Pressure observed.1B Containment Vacuum Pump Motor Running,But Pump Not Turning Due to Seized Rotor on Pump
References
LER-79-002-03L, LER-79-2-3L, NUDOCS 7902090324
Download: ML19259B432 (1)

LER-1979-002, /03L-0 on 790103:reactor Trip & Safety Injection Occurred.During recovery,1C Charging Pump Had Low Discharge Pressure Due to Faulty Rotating Element in Pump

Event date:
Report date:
3341979002R03 - NRC Website

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NRC FORM 366 U. S. NUCLE AR REGULATORY COMMISSION tr. m LICENSEE EVENT REPORT CONTROL BLOCK:

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8 60 61 OOCEFT NUMBER bd 6J EVENT DATE 74 75 HEPORT D ATE 80 EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h (TTTIIAt 1802 hours0.0209 days <br />0.501 hours <br />0.00298 weeks <br />6.85661e-4 months <br />, with 1A Charging Pump inoperable, a reactor trip and safety iniectioni g l occurred. During the recovery, it was observed the 1C Charging Pump had low

_J l discharge pressure. The plant was cooled to Operational Mode 5 and a surveillance l

o 4 [Tffll test performed.

The discharge pressure was approximately 2350 psig versus the l

Io ls l required 2402 psig. The pump was declared inoperable.

The 1C Charging Pump was l

{ogij l tested and returned to service at 0900 hours0.0104 days <br />0.25 hours <br />0.00149 weeks <br />3.4245e-4 months <br /> on 1/13/79.

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NAME OF PREPARER PHONE: