ML19268C028

LER 79-037/03L-0:on 791113,during Surveillance Testing on Rod Sequence Control Sys,Sequence Mode Found Inoperable. Caused by Failure in Integrated Circuit Chip on Sequence Logic Board.Integrated Circuit Chip Was Replaced

ML19268C028
Person / Time
Site:	Peach Bottom
Issue date:	12/13/1979
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-79-037-03L-01, LER-79-37-3L-1, NUDOCS 7912180558
Download: ML19268C028 (1)

Text

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is ei. visr.e 4 top: aw enows. t co :.i<rtsects @ $g/ . F__ Lsu.,.r_e.i.l.lan.ce testing on the .R.S.CS_. prior._t.o..M..d. wit _hdraval reveal..e_d _that Y$f. y r m (.vHh the R.S.':.S In_ ode. .evit.c.h..an.d.

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g g g,176A166LN)L6. was replaced. The RSCS was tested satisfactorily and k y Le,perabl,e ,in,less thr.n 12 houre._ Rod withdrawal did not cot:cence until_ [ 9 g{g g, the failun vna corrected. .g e;

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