ML20009F689

LER 81-072/03L-0:on 810427,RHR Sys Discovered Isolated from RCS During Mod of Train a Solid State Protection Sys to Include Reactor on Turbine Trip.Caused by de-energized Relay in Logic,Closing Isolation Valve

ML20009F689
Person / Time
Site:	McGuire
Issue date:	05/27/1981
From:	Ouellette R DUKE POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20009F683	List: ML20009F681 ML20009F689
References
LER-81-072-03L, LER-81-72-3L, NUDOCS 8107310410
Download: ML20009F689 (1)

Text

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.2 EVENT CfsCairTICN ANQ PRc8 ASLI CONSEct ENCES O'c io12 IWhile in Mode 5, initial 'uel loading, the RHR system was inadvertently A 1 holated frnt. the RCS. While performine a modification, the fuses from the Io i.1 I solid state protection system output cabinet were removed and an isolation m

, i o i s i Ivalve closed. This is in violation of Technical Specification 3.4.1.4 and a

(TITl I is reportable per Technical Soecification 6.9.1.13(b) . Since there is only A Inew fuel and no decay heay, the health and safety of the public were not io.2IIaffected.

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l i i o l [A normally ener21 zed relay in the Solid State Protection System logic was i

m Iinadvertently de-energized closing an isolation valve and isolating the RCS ,

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