05000298/LER-1980-004-03, /03L-0:on 800115,during Normal Operation, Discovered That RHR Valve M018 Was Inoperable.Caused by Failure of GE Relay Coil,Blowing Valve Control Circuit Fuse. Relay Coil Was Replaced & Correct Operation Verified

/03L-0:on 800115,during Normal Operation, Discovered That RHR Valve M018 Was Inoperable.Caused by Failure of GE Relay Coil,Blowing Valve Control Circuit Fuse. Relay Coil Was Replaced & Correct Operation Verified

ML19294B477
Person / Time
Site:	Cooper
Issue date:	02/08/1980
From:	Bednar L NEBRASKA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19294B476	List: 05000298/LER-1980-004, Forwards LER 80-004/03L-0 05000298/LER-1980-004-03, /03L-0:on 800115,during Normal Operation, Discovered That RHR Valve M018 Was Inoperable.Caused by Failure of GE Relay Coil,Blowing Valve Control Circuit Fuse. Relay Coil Was Replaced & Correct Operation Verified
References
LER-80-004-03L, LER-80-4-3L, NUDOCS 8002280479
Download: ML19294B477 (1)

LER-1980-004, /03L-0:on 800115,during Normal Operation, Discovered That RHR Valve M018 Was Inoperable.Caused by Failure of GE Relay Coil,Blowing Valve Control Circuit Fuse. Relay Coil Was Replaced & Correct Operation Verified

Event date:
Report date:
2981980004R03 - NRC Website

text

NRC FORM 366 U. S. NUCLE AR REGUL AToRY CoMMISStoN s7 77)

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HEPORT DATE n0 event oesCRiprico Ano Pnos AeLE C;*.SECLENCE: h

, !; lDuring normal operation an operator noticed that the ;;reen indicating light fo r

,RHR valve M018 was not lit.

The control power for the valve was lost and made the,

valve inoperable (Tech. Spec. Section 3.7.D.2).

The valve was on the closed posi- )

.4 oI>i leion as required for power opera:icn.

The normal RHR suction valves were open.

l a in Ithus, the RHR system would have been available if needed.

This event had no adversq oI'lleffect uoan public health and safety.

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40 43 42 43 44 47 CAUSE oESCRIPTION AND CORRECTIVE ACTIONS h The coil of a General Electric Model CR120 relay (#16A-K31) failed and blew the valg i

o ii)ij lve control circuit fuse. The relay coil was replaced with an identical spare and coy-Irect operation of the relay was verified. This was the first failure of this type o!p-l served at CNS. During subsequent discussions with the vendor, it was determined that i

i Ithe coil failure was of a random nature and was not indicative of a generic problem) i A

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NAVE OF PREPARER PHON E :