05000325/LER-1979-072-03, /03L-0:on 791003,main Steam Line High Radiation Instrument D12-RM-K603A Intermittently Spiked.Caused by Loose Condition of Voltage Cable,Resulting in Poor Contact. Connector Removed & Cleaned

/03L-0:on 791003,main Steam Line High Radiation Instrument D12-RM-K603A Intermittently Spiked.Caused by Loose Condition of Voltage Cable,Resulting in Poor Contact. Connector Removed & Cleaned

ML19254E283
Person / Time
Site:	Brunswick
Issue date:	10/23/1979
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19254E276	List: 05000325/LER-1979-072, Forwards LER 79-072/03L-0 05000325/LER-1979-072-03, /03L-0:on 791003,main Steam Line High Radiation Instrument D12-RM-K603A Intermittently Spiked.Caused by Loose Condition of Voltage Cable,Resulting in Poor Contact. Connector Removed & Cleaned
References
LER-79-072-03L-01, LER-79-72-3L-1, NUDOCS 7910310414
Download: ML19254E283 (1)

LER-1979-072, /03L-0:on 791003,main Steam Line High Radiation Instrument D12-RM-K603A Intermittently Spiked.Caused by Loose Condition of Voltage Cable,Resulting in Poor Contact. Connector Removed & Cleaned

Event date:
Report date:
3251979072R03 - NRC Website

text

NRC FORM 366 L; 3 NUCLE AR REGULATOR. COMMISSION (7 77)

LICENSEE EVENT REPORT CONTROL BLOCK:

l l

l l lh (PLE ASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6

- l 01 0 @l 4 11 il il il@l lo Iil I Ni cl ni el v 11 @ l 01 01 -l 01 01 01 0 0

7 8 9 LICENSEE CODE 14 25 LICENSE NUMBER 25 26 LICENSE TYPE JO

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60 61 DOCKET NUMBER 68 6'J EVENT D ATE 74 75 REPORT D AT E 80 EVENT DESCRIPTION AND PROB A9LE CONSEQUENCES h [M 2_j l Durinn normal operation. a half scram and half nroup one isolation was received on 1

o a l enannel A.

Main steam line high radiation instriraent, D12-RM-K603A, was found to be 1 0

4 intermittenly spiking. The instrument was placed in the standhv mode and a half I

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lscram was incerted.

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6 Technical Specifications 3.3.2. 6.9.1.9b l

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SYSTEV

CAUSE

CAUSE C OY P.

VALVE CODE CPcF SUBCODE COMPONENT CODE SU8 CODE SUBCODE o 9:

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13 11 12 13 18 19 20 SEQUENTI AL OCCUARENCE REPORT RLVISION

_ EVENT YE 'R RE POR T NO.

CODE TYPE N O.

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_ 21 22 23 24 26 27 28 29 30 31 31 ACTION FUTURE EFFECT SHUTDOWN A TT AF HV E N T N PR D.4 PRIVE COYP.

COYPONENT TAKEN ACTION ON PLANT METHOD HOURS 22 SUBVITTED FORMbCB.

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40 41 42 43 44 47 CAUSE DESCM 8 TION AND CORRECTIVE ACTIONS i

o l The cong etor on the high voltace cable was loose and not making good contact. The l

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l connector was removed,,abic and connector parts were cleaned, and the connector was l good connection. The cable was reconnected to the li[7] l reinstalled and tightened fm c

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l instrument and the reading was stable. Visually inspected all other main steam line l l i 14 I l drawers for proper connections. This is considered an isolated event.

7 8 9 80 F ACIllTY YETHOD OF STATUS

% POV.E R OTHER STATUS DISCOVE R Y C,lSCOVE R Y DESCRIPTION 32 LE]@ l 0l 9l 6l@

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l Al@l Operator Surveillance l

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ACTIVITY LO TENT RELE ASE D OF RE LE ASE AVOUNT OF ACTIVITY LOC ATION OF RELE ASE l Zl NA l NA l

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7 8 9 60 11 44 45 60 PE RSONNE L E X PO*;URLS N' iVH E R TYPE

DESCRIPTION

101 Ol 01@l Zi@lNA I

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PERSONN e't iN iu' RIES nESCRipuON@

Nuvst n 10 01 Ol@lNA I

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1 8 9 11 12 80 LOSS OF OR D AMAGE TO F ACILt TY O 7 910010LtI q g <l TYPE

DESCRIPTION

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8 9 10 t q 80 ISSUE @l DESCRIPTION I

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