05000325/LER-1979-068-01, /01T-0:on 790927,cables for HPCI Inboard Isolation Valve G41-F002 Discovered in Sections of Cable Tray W/Automatic Depressurization Sys Cables.Cause Not Stated. Mods Being Prepared

/01T-0:on 790927,cables for HPCI Inboard Isolation Valve G41-F002 Discovered in Sections of Cable Tray W/Automatic Depressurization Sys Cables.Cause Not Stated. Mods Being Prepared

ML19209B975
Person / Time
Site:	Brunswick
Issue date:	10/09/1979
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19209B974	List: 05000325/LER-1979-068, Forwards LER 79-068/01T-0 05000325/LER-1979-068-01, /01T-0:on 790927,cables for HPCI Inboard Isolation Valve G41-F002 Discovered in Sections of Cable Tray W/Automatic Depressurization Sys Cables.Cause Not Stated. Mods Being Prepared
References
LER-79-068-01T, LER-79-68-1T, NUDOCS 7910110338
Download: ML19209B975 (2)

LER-1979-068, /01T-0:on 790927,cables for HPCI Inboard Isolation Valve G41-F002 Discovered in Sections of Cable Tray W/Automatic Depressurization Sys Cables.Cause Not Stated. Mods Being Prepared

Event date:
Report date:
3251979068R01 - NRC Website

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LICENSEE EVENT REPORT CONTROL BLOCK: l l

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69 EVENT DATE 24 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h o 2 lDuring a review of ECCS division separation, it was determined that Division TI cables l i for the llPCI inbcard isolation valve (C41-F002), a Division II valve, was run in sec-l o

a ltions of cable tray containing Division II ADS system cables. Subsequent analysis of l o

4 o s [those cables revealed that if the isolation valve was in the wrong position, then a l

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failure at a trav section containing thes'e cables might result in a cou sinatien of al 0

7 l cable failures which could impair the operability of the HPCI (Division 1) and ADS l

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l(Division II) systems. This is common to both units. Technical Specifications 6.9.1.$1 SYSTEM

CAUSE

C A US E C O.' P.

VALVE CODE COGE SUBCODE COVPONENT CODE SU8 CODE SUECODE lS lF lh lB h Wh l E l Ll E l C l 0l N l@ l Z l@ y @

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9 10 11 12 13 16 19 20 SEGUENTI AL OCCURRENCE REFORT REVISION LER RO EVENT YEAR R EPOHT NO.

CODE TYPE N O.

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40 41 42 43 44 41 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS l United Engineers and Constructors is preparing plant modifications to " spare" cables l

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LLL'_J land install new cables in isolated conduit to provide sufficient isolation. A review jof ECCS and their primary containment isolation valves in being performed to verify i

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3 that no other cable separation problems existed.

The cable seperation criterion for l the IIPCI and ADS systems will be redefined in the appropriate cabic seperation (CON'T}

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8 9 80 ST

% PO.'.E R OTHER STATUS D50 Y

DISCOVE HY DESCR.PTION W@ l 0l 9l 1l@l NA l

l D l@l NSSS Notification l

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ACTIVITY LO TENT RE LE ASE D OF RELE ASE AVOUNT CF ACTIVITY LOCAT'ON OF RELEASE Z l @ l Zl@l NA lNA l

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7 8 9 10 11 44 45 80 PERSO*.NE L E XPOSun ES NUMBE R TYPE DESCRIPTION 37 l 0 l 0 l 0 l@l Z l@l NA l

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PERSONNEL NJU ES NUYRER CESCH.P TION l 0 l 0 l 0 l@l NA i

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8 9 11 12 go LOSS OF OR D AV AGE TO FACILITY TYPE D;SC RIP TION W@l NA 9

7 8 9 to 60 12 l c l l N f@l DESCRIPTION 910110 3 2, >

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8 9 10 68 69 80 ;s

. C. Tollison, Jr.

919 457-9521 2

NAME OF PRFDARER payy.

LER CONTINUATION - RO# 1-79-068 Facility:

BSEP Unit No. 1 Event Date:

9-27-79 specifications in such a manner as to prevent any future recurrence of this event.

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