ML19261A792

LER 79-002/03L-0 on 790103:refueling Water Level Transmitter Refroze.Caused by Frozen Transmitter Sensing Line.Addl Insulation & Heat Lamps Added to Sensing Lines & Transmitter Cabinets

ML19261A792
Person / Time
Site:	Arkansas Nuclear
Issue date:	01/31/1979
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19261A787	List: ML19261A786 ML19261A788 ML19261A792
References
LER-79-002-03L, LER-79-2-3L, NUDOCS 7902080177
Download: ML19261A792 (1)

Text

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NRC FORM 366 U. S. NUCLE AR REGUL ATORY COMMtsSION (7 77)

LICENSEE EVENT REPORT EXHIBIT A CONTROL BLOCK: l (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATIONI l l l l l lh 10 l1s 9i Al RLsCENSEE 7

l A l COng Nl 0 l 2 l@hl 0 l0 l -l0 64 l 0 l 0l Oj O j- l 0 25l0 lgM UCE NSE NvYHEH 1 l 1 l1 l 1 lgl l lg L K t Nut ivPt N bJ C A T $8 COTT o '

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6v 61 DOCK ET NUMSER f4 63 EVENT DATE 14 75 HEPOH1 OATE 80 EVENT DESCRIPTION ANO PROBAGLE CONSEQUENCES O'o o 2 IDurine Power Ascension Testing, Mode 2 operation, Refueling Water Tank  ;

o 2 11evel transmitter, 2LT-5639-3, refro:e, making the transmitter inoperable, 10141 (see also LER-50-368/79-001). The transmitter supplies an RAS signal I r s linput to PPS "C". The requirements of Action Statement #9, T.S. Table  ;

o c 13.3-3. were net. Reportable per T.S. 6.9.1.9 (b).  ;

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[NJg [_NJ g lF 42 1 jdut.E0 l lg 43 44 4, CAUSE DESCR.PTION AND CORREC ftVE ACTIONS IiiOIIThe transmitter sensing line was frozen. Additional insulation ,

Ii ii I Iand heat lamps were added to sensing lines and transmitter cabinets.  ;

ii!2i 1The transmitter was returned to operable status within three hours ,

i i I 31 1 of the failure. ,

titell I 7 8 9 en STA 5 NPOWER OTHEM STATUS D $C v Hy Ot%COV E HY DE hHiP riON A

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101010 l@[,_ NA 7 8 9 11 12 LOsL OF OR DAMAGE TO FACILITY po T vrE DESCRIPitON f~lil[lj@l NA '

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DE RiPTION N AC USE Ol4LY DTil u$sydESl NA 1 lti;ii1l1IJil AME OF PREPARER Chris N. Shively ,ggy, NOM 4M 7902080177

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