05000327/LER-1981-068-03, /03L-0:on 810619,liquid Radwaste Effluent Monitor Was Declared Inoperable When Monitor Would Not Source Check. Caused by Contamination of Monitor Sample Chamber Due to Background Buildup

From kanterella
(Redirected from ML20009C689)
Jump to navigation Jump to search
/03L-0:on 810619,liquid Radwaste Effluent Monitor Was Declared Inoperable When Monitor Would Not Source Check. Caused by Contamination of Monitor Sample Chamber Due to Background Buildup
ML20009C689
Person / Time
Site: Sequoyah Tennessee Valley Authority icon.png
Issue date: 07/15/1981
From: Harding M, Wilkey A
TENNESSEE VALLEY AUTHORITY
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20009C688 List:
References
LER-81-068-03L, LER-81-68-3L, NUDOCS 8107210362
Download: ML20009C689 (1)


LER-1981-068, /03L-0:on 810619,liquid Radwaste Effluent Monitor Was Declared Inoperable When Monitor Would Not Source Check. Caused by Contamination of Monitor Sample Chamber Due to Background Buildup
Event date:
Report date:
3271981068R03 - NRC Website

text

_

D e

.. c[.

("

LICENSEE EVENT REPORT CONrROt stOCic: I.I I

I I

I l@

(PLEASE PRINT OR TYPE ALL REQUIREO INFORMADONI i

lo Til I T I N I s I N le 11 l@l010 l 10101010101 - 1010 l@l4 Il 11 il 11 lhi I

le F

S 9 LaCEN5tt CoDL le IS LICENst NUMBER JS 26 Lif1NSE TYPE JO 6 7 c a t si, CON'T

,"j ",,",' l L j@l 0 l 5 10 l 0 10 13 l2 l7 @l_0 16 11 l9 l8 l1 @l01711l5l8 l1 l@

C o

2, 8

60 60 DOCu ti Nuvot M 68 69 LVENT DATE 74 76 REPORT DAT E 80 EVENT DESCRIPTION AND PROSABLE CONSEQUENCES h o 2 l At 2200 CDT on 6-19-81 with Unit 1 at 100%, the liquid radwaste effluent monitor was ITTTI I declared inoperable 'during a pre-release source check when it would not source check.

i Unit 1 entered action statement 30 of LCO 3.3.3.9.

There was no effect on public health,-

o 4 ITTsl I or safety. Refer t'o SQRO-50-327/81057 for report of last occurrence.

ITT'il I r

l o 171 l l

f7TTI I I

su i n s N L

'an" "c^o"# - J#e.

c cou.o~ INT eoo, l Ml Cl@ Wh l El@ lIlN lS lT lR lU jg l C g 'lZ lg loisl 2

8 9

10 Il 12 i3 18 is 20 stoutNT AL OCCUnpfNCE-REPORT REvt3loN

,_EVtNTYEAR REPonT NO.

4oOE TYPE No.

O","Lgninol 8 l Il

(--J l0l618l y

l 0l 3l W

[.- j

'l0 l jg,a,7,

_,21 22 2J 24 26 27 28 29 30 Ji 32 T or!

Fon IUS.

iK r A

o PLANT u7 hours 27 s8 Iff suPPLI MAN ACTURfA

(,_Cj@l F l@

lZl@

l Zl@

l0l0l0l0l lN [g lN [g l Ll@

l Gl 0 l6 l3 l JJ 34 JS 36 J7 40 el 42 43 44 47 cAUSE OESCniPTION AND CORRECTIVE ACTIONS h ITTTI I The' monitor sanple chamber was contaminated due to background buildup. The chamber i

On this occasion, thel 1i ii1 i recuires frequent flushing and replacement of the sample chamber.

l ml sample chamber was replaced and the monitor was returned to service at 1000 CDT on

~

IiI3l l 6/23/81. Design modificat. ions to facilf tate flushing QCR-908) and to provide a ii,.I1 redundant monitor (DCR-1109) are being processed.

~

I i

si so

's'/MUE orncnsTATus b SiNvIN oiscoveny otscniefioN h scoweR lT I Tl (_y,j @ l 1l 0l 0l @ l NA l

y @l Source Check i

A8rivity co'Ortui 80 AuouNv on AcTaveTv h l tocATioN or nettase h rettAsto orntLeast lZ_] h l Zl g l l

NA l

j 8 G NA f

reasoNNet r=,osdits ocscRiefioN @

NuossR Tvec 18l71 d !Ol0l@lZ l@l NA I

re asoNN e'L' Nau'dit s osseniefioNO wuween l

10l0l0l@l 1

NA I

7 s 9 is i2 s0

' ** ' " ^

[j.j,,}] l Z lh[ sc"',"TIo'N "*h v r,E n

NA I

'o 8107210362 810715 otsca'* Tion b hDRADOCK 05000327 NRC USE ONU issue Q

hl NA PDR l

lllllllllllll s

a 9 0

6: e9 Name of Preparer: M. 'R. Harding /A. M. Wilkey Phone: (615) 842-8317 o