ML20062E868

/03L-0 on 781117:output Demand Signal from RCIC Flow Controller (Inst HCS213-115) Read Down Scale.Caused by Open Circuit in Controller Demand Current Loop

ML20062E868
Person / Time
Site:	Peach Bottom
Issue date:	12/06/1978
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:
References
LER-78-046-03L, LER-78-46-3L, NUDOCS 7812130130
Download: ML20062E868 (1)

Text

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'. r nr . Gr i 1 This 1.ER refers to the RCIC Flow Controller which failed downscale rendering RCIC inoperable. The applicable Technical Specifications are 3.5.D.1 and 6.9.2.b(2). -

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R l _ While at_poweta_the control . room, operator _ observe _d thq._o_u_gpgt_(qm_and ,_

i L.'.i.:! l._ signal f ro.m.,the RCIC,F}ow Controller (Insts,,No.,,HCS3)_3_1 , J }l read down- ,, _,j

81. , scale. This made RCIC inoperable. HPCI system was tested in aqqordance . . _,,

, _._j f 4T ~1 i with Tech spec 1.5.o.2 to . prove operability. RCIC controller output cor- .

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PT~l i The cause of the occurrence was stat i circuit (p_.th,e__ controller deiend I l'.[:)I.' current loops,A_,, loo se_, termina tion wa s, f_oun_d_on,_,Qte,,hcJ_,pf,,_1hg c9. DEI 23 * . --}

El I _ ter. The_te_rmination was tightened and controller output returned to l

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