05000327/LER-1980-189-03, /03L-0:on 801119,containment Sump Valve to Containment Spray Pump 1B-B,1-FCV-72-20,failed to Open. Caused by Dirty Contacts on Valve Switch.Contacts Cleaned & Valve Tested

/03L-0:on 801119,containment Sump Valve to Containment Spray Pump 1B-B,1-FCV-72-20,failed to Open. Caused by Dirty Contacts on Valve Switch.Contacts Cleaned & Valve Tested

ML19343B417
Person / Time
Site:	Sequoyah
Issue date:	12/16/1980
From:	Cottle W, Kirk G TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19343B414	List: 05000327/LER-1980-189, Forwards LER 80-189/03L-0 05000327/LER-1980-189-03, /03L-0:on 801119,containment Sump Valve to Containment Spray Pump 1B-B,1-FCV-72-20,failed to Open. Caused by Dirty Contacts on Valve Switch.Contacts Cleaned & Valve Tested
References
LER-80-189-03L, LER-80-189-3L, NUDOCS 8012230393
Download: ML19343B417 (1)

LER-1980-189, /03L-0:on 801119,containment Sump Valve to Containment Spray Pump 1B-B,1-FCV-72-20,failed to Open. Caused by Dirty Contacts on Valve Switch.Contacts Cleaned & Valve Tested

Event date:
Report date:
3271980189R03 - NRC Website

text

b' LICENSEE EVENT REPORT

'.C CONTROL BLOCK: l l

l l

l l.h l

(PLE ASE PRINT On TYPE ALL REQUIRED INFORMATIONI fo"IIl l T l N l S l N lP l 1 l@l 0l 0 l -l 0 l 0 l 0 l 0 l 0 l - l 0 l 0 l@l4 l1 l1 l1 II l@[, l lg i

e 9 LICENSEE CGot le 16 LICENst NUuSER JS 26 LICE N".E T vrt JQ te cat g CON'T lTTil

,,$,' l L l@l 0 l 5 l0 l0 [0 l3 l2 l7 @l 1 l 1 l 1 l 4 l 8 l 0 h(_1 l 2 I 1 l 6l 8 l 0 l@

3 3

60 el DocngiNUv0EM 64 69 Evf NT oaf t le 76 MtPC'ifCATE 80 EVENT DESCRIPTION AND PROS ABLE CONSEQUENCES h a 2 l Unit 1 in Mode 1 at 50% react'or onwer.

At 2200 CST on 11/10/80. the containment I

g o i 31 I sumn valve to containment sprav pumn IB-B. 1-FCV-72-20 failed to open during the f

l o l a I, nerformance of SI-166.1.

Train B of the containment scrav system was' declared l

g iinonerable and LCO 3.6.2.1 was entered. There was no effect upon public health' or l

o s Isafety. Previous occurrences - 1 (Reference: SORO-50-327/80081) l 0 7 I

l 1 o 181 I I

sYsitu CAust CAUsf Coup.

va(vg CCCE Coof '

sO8CCDE Cou'oNE NT Coot sueCOct sueCoct l0i9l lSlBl@ { @ lZ l@ [V l A lL lV l0 lP l@ W@ 'lZ l @

)

a 9

10 11 12 IJ te 19 20 stouf NTI AL OCCunRENC(

MtPoRT RIV'stoN g

EVENT YE AR R EPont No.

. Cool TYPE No.

@,"(j;af moi 8l 0I l-1 l1I8IOI [f_J l 0 l3 l Lt_j l-l g

[0j 0

_a.

n n

24 u

n n

2, u

2.

n MANU ACium'gm TA Et ACT Cr O PLANT MET HOURS s8 et f FOn w e.

SUPPL Wh[J4Z_j@

lZ l@

W@

l0l0l0l0l W@

l N l@

lLl@

l L l2 l0 l0 l JJ JS Je 31 40 41 42 43 44 47 CAUSE DESCnlPTION AND CCARECTIVE ACTICNS h I i l o l l 1-FCV-72-20 is interlocked with 1-FCV-74-21. Residual Heat Removal containment'isolationi i i lvalve.

Investigation revealed that the close interlock limit switch on 1-FCV-74-21.

i i 2 l which controls 1-FCV-72-20, was not makine up proper 1v due to dirty contacts. The ITTTI I contacts were cleaned, the valve was functionally tested, and the~ system declared r

y [ operable at 0415 CST on 11/20/80.

s si so

's'r'S i I."

ovnensrAtus @

EsEcvSN oiscovany oesCnietrow h srowsa I I S I (_Q,j@ l 0 l 5 l 0 l@l NA l

lBl@l Operator Observation j

A8:ivery Co' truT 80 U_LJ LzJ @ tz J@l AwouNT o, ACrivirv @ I toCATio~ or,ieuAs @

nu Asio o, acu As, NA l

NA l

. nso~~a n. ossis ocsCal,rio~ @

NUo.ia tv c fiTTI 1010l 0l@LZJ@l NA I

,.so~~ I',~,U2.s oesCwtionh uuver a U, _13.] I 01 01 Ol@l NA I

Loss o8 oR oauact to FACILITY Tv't otsCRIPvtoN N [_Z,j h.!

NA 7

8 9 0

PURL ICIT V NRC USE Ord v

,,,,,ggric~~~

801223o 3 %

s,

,,,,,,,,,,,,l 7

e s so se e9 N'me of Preparer W.T.Cottle/G.B.Kiric__ _

Phone (615) 842-8317 a