05000366/LER-1982-104-03, /03L-0:on 820924,RHR Pump 2D Would Not Start W/Control Switch.Caused by Broken Relay Snap Ring in Pump Breaker.Ring Replaced & Breaker Tested Satisfactorily

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/03L-0:on 820924,RHR Pump 2D Would Not Start W/Control Switch.Caused by Broken Relay Snap Ring in Pump Breaker.Ring Replaced & Breaker Tested Satisfactorily
ML20027D303
Person / Time
Site: Hatch Southern Nuclear icon.png
Issue date: 10/21/1982
From: Tipps S
GEORGIA POWER CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20027D300 List:
References
LER-82-104-03L, LER-82-104-3L, NUDOCS 8211040096
Download: ML20027D303 (1)
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LER-1982-104, /03L-0:on 820924,RHR Pump 2D Would Not Start W/Control Switch.Caused by Broken Relay Snap Ring in Pump Breaker.Ring Replaced & Breaker Tested Satisfactorily
Event date:
Report date:
3661982104R03 - NRC Website
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text

NRC FOZM 366 U.S. NUCLEAR REGULATCRY COMMISSION (7-77)

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LICENSEE EVEiNT REPORT CONTROL BLOCK: l l

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8 60 61 DOCKET NUM8ER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h [OT21 ion September 24, 1982, with Unit 2 in run at 2398 MWt, the "2D" RHR pump l lOlailwould not start with the control switch when required. Tech. Specs.

l l3.5.3.2 requires four operable RHR pumps.

The remaining RHR pumps and l

0 4 l0l5[ [the core. spray system were operable. The unit was put in a 7-day Limiting O s l Condition for Operation (LCO) per Tech. Specs. 3.5.3.2, action a.l. The l l0l7l[ health and safety of the public were not affected by this non-repetitive l l 0 la i levent.

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40 48 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h ITTTllThe cause of the event was component failure of the pump breaker due to I i i la broken relay snap rino.

The relav snap rino was replaced, and the i

1 2 l breaker was successfully tested and pump operation verified by using thel i a l control switch.

The pump was returned to service on September 24, 1982.l 8I l

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DISCOVERY DESCRIPTION

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B. Tipps I9UI NAME OF PREPARER PHONE:

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