ML20052H583

LER 82-027/03L-0:on 820326,one Channel of Position Indication for RCS Power Operated Relief Valves NC-32 & NC-36 Declared Inoperable When Closed Indicator Lights Failed.Caused by Loose Fitting Bulb Due to Crack in Socket

ML20052H583
Person / Time
Site:	McGuire
Issue date:	05/10/1982
From:	Nardoci P DUKE POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20052H578	List: ML20052H577 ML20052H583
References
LER-82-027-03L, LER-82-27-3L, NUDOCS 8205210242
Download: ML20052H583 (1)

Text

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o 2 lWhile in mode 1 one channel of position indication for Reactor Coolant ~ System [

E Ipower operated rollef valves (PORVs) NC-12 and NC-36 were declared inoperable  !

E lwhen the " closed" indicator lights failed. This violates T.S.3.3.3.6 which is I

@ Ireportable pursuant to T.S.6.9.1.13(b). Since another channel of PORV position l E lindication was available (PORV and pressurtzer code safety relief valve discharN

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o r [line temperature indications), and the loss of closed indication did not affect [

E Ithe PORVs ability to nerform their function. health and safety of the public were

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LLIa] INC-36's " Closed" indicator failure resulted from the bulb fitting loosely in ther E l socket (Cutler-Hammer, type E-29NM), due to a crack in the socket. NC-32's i E I" closed" indicator failure resulted from a blown fuse, attributed to a spurious L' L ] I f ani t in the DC circuitrv. NC-36's socket contacts were adjusted to contact the I m lhulh base, and the socket will be replaced. NC-32's fuse was replaced. p

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.....e...... Phillio B Nardoci puoug. (704) 373.-7432 8205210242 820510 -

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