05000327/LER-1981-154-03, /03L-0:on 811219,damaged Signal Cables Found on Refueling Water Storage Tank Level Transmitter.Caused by Excessive Heat While Attempting to Thaw Frozen Sensing Lines.Cables Repaired.Transmitter Replaced

/03L-0:on 811219,damaged Signal Cables Found on Refueling Water Storage Tank Level Transmitter.Caused by Excessive Heat While Attempting to Thaw Frozen Sensing Lines.Cables Repaired.Transmitter Replaced

ML20040B747
Person / Time
Site:	Sequoyah
Issue date:	01/15/1982
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20040B740	List: 05000327/LER-1981-154, Forwards LER 81-154/03L-0 05000327/LER-1981-154-03, /03L-0:on 811219,damaged Signal Cables Found on Refueling Water Storage Tank Level Transmitter.Caused by Excessive Heat While Attempting to Thaw Frozen Sensing Lines.Cables Repaired.Transmitter Replaced ML20040B747
References
LER-81-154-03L, LER-81-154-3L, NUDOCS 8201260380
Download: ML20040B747 (1)

LER-1981-154, /03L-0:on 811219,damaged Signal Cables Found on Refueling Water Storage Tank Level Transmitter.Caused by Excessive Heat While Attempting to Thaw Frozen Sensing Lines.Cables Repaired.Transmitter Replaced

Event date:
Report date:
3271981154R03 - NRC Website

text

. ll n) " -

LICENSEE EVENT REPORT

/hAI.h l~

rA....', )

CorsinOL OLC*K: l

]

l l

l l

l (PLEASE PnlNT On TYPE ALL nEQUIRtc tr4FOnMATIOPJ1 1

6 J

lT lN lS lN !P l1_}@l_0 l 0 l -l 0 l 0,[QJJJ 0 l lo lo l@l 4 l 1 l 1 l 1 l lj@[

l lg o 1 I

8 9 LICtr45t t CLOL I4 IS LICLPGL rduYfatn Ji 26 LICE NSE f vPL J0 bi c a s e.

' corrr Iol'l

$';$$ (L@l0 l5 10 lo _ j _0 l 3 l 2 l 7 Q){ 1 l 2 l 1 19l8l1 )@l0l1l1l5i8l2l@

tvrter otscn Prion Ar o PnonAIr rS. NNNcts h 10 l 7) l With ifnit I in Mode 1 (100% nower. 578 decrees F 2215 n tid at 1055 EST on 12/19/81,.

1013l l one refuelinn water storane tank level transmit' er was declared inoperable due to '

[014] I damaged signal cablet..

This event placed the unit in the action statement of LCO g[

3.3.3.7.

There was no effect upon public health and safety.

Previo"s occurre'nces -

0 r,

[ ~Cwo ( SORO-50-327/81206 and 81004).

O 7 l

1 o I +5 1 I r.

. 9 Syst r u CAU$t CAUif COMP.

VAtyt 000t CODI suocci>E CO' epoNE NT Coot SU9 Coot SU8 Coot 10191 I I! F l@ [Aj@ [ C l@ lz lz lz lz lz lz l@ l z l@ 'lz l@

7 8

'I tu it 12 13 td 19 2'J

'i out S t e AL OCCUnntNCE ntPOni REVlilON t vt.Nr yt An pfPctift.O.

400E YvPt NO.

O,"g g eriOI81il 1-1 liIsl41 1-1 10111 I r. I l-J l 01 jl.yl,

_ 21, 22 23 24 26 27 2R 29 J0 33 32 ACit0N fuiUHE testCf sniJ t nowr4 A TT ACHvt NT NPHO 4 PRIVE COMP, COMPONfNt T Ah.E ri ACf 8Cf4 Ora l L AN T MtfHou HOUHS SuuutiftO F Onu ous.

SUPP Lit R uANusActunE84 llj@l zl@

l zl@

lzi@

1010101 i

LNJ@

[ N l@

lL l@

l z l 9 l9 l" JJ Jo JS 3rs 37 40 4l 47 43 44 4

CAUSE PJSCulPTIOrJ AND COHHCCTlVE ACilONS lilOl l A maintenance rertuen t was init iated to verify calibration of the' level transmitter li ii j l (1-LT-63-50) and problems indicated freezing sensing lines. While attempting to thaw a

$bi# '

vt i out the transmitter sensin,; lines using a heat gun, the signal cables were inadvertent-

'hlg i l 7 i Me r

+ il3]

ly damaged due to excessive heat.

The cables were immediately repaired, with the 9.:.

j i t

,4 transmitter being replaced, calibrated and returned to service at 2220 CST on 12/19/31.

3. s -

6 ai e

57 it.

• nPOWEn 01HLn s T Altri 15 l '1 OtscovinY DESCn8PTION RE l_Ej@ l1 l 0 l 0l@l NA l

(, b'_j@l Maintenance personnel

' 0nvuv

'8 8'

4 CO rerer l ' 16 I l. zj @ [1z_l@l A Ou,n 0,ACnvu v @ l toCAnCNC,ntu m @

neueio 0, ntu m NA l

NA 7

30 si 4.

43 e

i.,

Ptn,0NNEL titPOSU8tt1 NUMain TYPt DESCniPTION -

..LLL.I l O! 01 O l@lzl@l L

nA n

u

.c PinSONNELINJunit5

,,g y.

NtJV8 E n DEScittPflON '

liIsll0101Ol@l NA i

oc LO5S OF OR D Au Ar,E TO F ACittiv TYP(

O t 1CH'P i TON Ii19'l L1]@l NA i

,uudfrv

$onnoocgo5=0:23 20226o300 e2 OesCnernON @

unc usE nNo.

t,m.],u,so,0e.i s

m27 i

i iiiiiiiiiiil m

von k ' fi m iries or.i_o m