ML19317D117

LER 79-001/01T-0 on 790104:design Errors in Cable Designations Were Identified.Ten Cables Found to Be Designated Nonsafeguard.Caused by Improper Designation of Cables During Design Phase.New Cable Routing Completed

ML19317D117
Person / Time
Site:	Peach Bottom
Issue date:	01/18/1979
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19317D116	List: ML19317D115 ML19317D117
References
LER-79-001-01T, LER-79-1-1T, NUDOCS 7901250171
Download: ML19317D117 (1)

Text

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TDAft HQ U OU bl DOGNLi NUVota E V EN T (> A T E EVENT OtiSCIllPilON Af40 PRCDABLE CONSEQUENCES h El Durinc a review of cable routing, design errors in cable designationc l

@l were identified. Ten cafeguard cabloc, five on each unit, were found to l El be decicnated non-cafeguard and co routed. Eight of thece cables are l Ts']I accociated with HFCI and RCIC cystem instrument power supplies and two l T-] I with the HPCI nyctem_ flow instrumentation. Instrument power cables are i

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T74 1 The cause of this event was an improper decignat_ ion of these cables l

@l during the decicn phase of the_ plant. New cable routing and designation I yL was immediately begun on Unit 2 and was completed the came day the j

[a[ [ errors were discovered. Cabic routing on Unit 3 was begun after chutdown l c t .3 i [ for a acheduled outage and completed on January 11, 1979 I e a eo F AC.1 t TV Y[ THUD OF 51AluS # PO.*d ft OTHER STA TUS "i. 06CowIHY ObCOV E HN Of Sch.PflON 32

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