ML19262B997

Updated LER 79-008/03X-1:on 790114,during Mode 1 Operation, Refueling Water Tank Level Transmitter Sensing Line Froze. Caused by Burnout of Heat Lamp in Transmitter Box.Lamp Replaced

ML19262B997
Person / Time
Site:	Arkansas Nuclear
Issue date:	01/18/1980
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19262B990	List: ML19262B989 ML19262B995 ML19262B997
References
LER-79-008-03X, LER-79-8-3X, NUDOCS 8001220396
Download: ML19262B997 (1)

Text

UPDATE REPORT - PREVIOUS REPORT DATE 2/7/79 i

NRC FORM 3i,6 U. 5. NUCLE AR REGULATORY COMMIS$ TON (7 77)

LICENSEE EVENT REPORT EXHIBIT A CONTROL BLOCst: l l l l l l 6lh (PLEASE PRINT OR TYPE ALL REOUIRED INFORMATION) 6

[o_LLJ l AIR l Al Nj o l 2 l@)l 0 l0 l LICEN$t - 10 NVY8tH0l 0l 0j0l- l0l0 l g 1 l1l1 ]lj gl lg T 8 . LeCENSEE CODE to $ 2$ 26 tsCL Nkt IvPL JG $7 C A T tall CON *T .

ITTTl 8

Z,3 [L_J@l0 I 5 p 10 I 013 l 618 l@l0 l 11 1141719 l@l 011 74 118 18 1080l@

3 60 61 DOCKET hup 0ER t>8 6'e EVENT DATE  ?$ H, PORT Daf t f7TTlEVENT I During OESCRIPTION AND PROS ABLE CONSEQUENCES O'o Mode 1 operation, refueling water tank level transmitter, j 1o12j i 2LT-5639-3, sensing line froze, making the transmitter inoperable. Tne i o . low RWT level trip (RAS) signal on PPS channel "C" was bypassed per the in Isl I reauirements of Action statement T.S. Table 3.3-3.6.bi9. The remaining i 10 g i i RWT level indications were verified to be normal. Similar occurrences ,

e i I are lFR's 50-168/74-007 A 79-001 Reoortable oer T.S.6.9.1.9.b. I o ., I I

" ^

'NEi /ds' t su'ecs (oven ~i s7 tout .j'7.. J' g . ,

i I 1 El@ g@ [X_J@ II l NIS IT 8 IU j@ [T j@ [l'ejeg

,e ,, ,,

, ,, ,. ..._ ,e

,,,, Sf QUE N TI Ai. Oc tt;s s r '.cf set rone r PEviseuN

@ s"hh 1 ai I Eln [--J

.3 l

24 iI I to M,

2 I

2 ID l b w

L .]

2 bu TAKEN A T CN P A T MET HOyR5 5 8 e7 804 h a sv rt VAN raC\ RER Lf.J@LZ JJ 34 J@ LZJ@ lz.J@ l 0 I o f of o I LXJ@ LEJ@ LtLJ@ F I112 i Ol@

3d 3t> JJ 40 el 41 43 44 ai C AUSE DESCR.PTION AND CORRECflVE ACTIONS h

, o l Investigation revealed that the temporary heat lamp placed in the i

,,,,, transmitter box had burned out. The lamp was replaced & remained in m i service until November,1979, when heat tracina was permanently installed

, 3 1  ;

i . t ,

STA 0 'APOWEA OTHERSTATLS 5C H 0;. t s<v eg co,p rios iis O@ l 011 l 9 l@lPwr Esc Testind" ';

[A_J@l NA l

".hivov Co'JT e sT

• so cuasio on nurase NA 4uousT c, CTmTv @ I*I NA m ,. r,cy o, ,,,,,,a A' I z J @ LZ_J @ l j

,i *

' ,m.so~s'il e m,ceis Tv., o.,, .T,0~ @

llLJ l0101 Ol@y@l NA l

,inso~~d',~,u'lis

so

~uv.ca c e sC R,. 7,c~ @

i NA T

101010l@l ii ,2 l

~

w c:a=;:-@  ; 79c) g;;

i 9 L;J@l NA l

T A 9 IO PuSLICITY 8

4 NNCLTSI ONLY 2 essug LSJ o@Ot l NA 5Cai8 TION ] l;;;;;;;,,;,l

> s a 'O o . . . ,

oc NAME OF PREPAREH Chris N. Shively ,,,g,,, WMNm 8 0 012F.;O g g