ML19323A099

LER 80-010/03L-0:on 800310,during Surveillance,Control Element Assembly Exhibited Erratic Position Indication & Was Declared Inoperable.Caused by Intermittent Open Conductor in Cable or Connector from Reed Switch

ML19323A099
Person / Time
Site:	Millstone
Issue date:	04/09/1980
From:	NORTHEAST UTILITIES
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19323A098	List: ML19323A097 ML19323A099
References
LER-80-010-03L, LER-80-10-3L, NUDOCS 8004170226
Download: ML19323A099 (1)

Text

NitC FORM 3cn U.S.NUCLEAn nECULATOnY CO."IMISSION 1777)

LICENSEE EVENT REPORT coNTnot utock: l l l l l l gptEAst PnlNT On TYPE ALL FIEOutnED INFOnMATION) 0 1 l9 C l LICINSEE T l M CODE l N l S14l 2 15l@l 0l 0l -l 0l Ol 0l 010 l - ! 0 l 250 l@l LICENSL NUMBEn 20 4 LICENSEI l l 1TYPEl i lJ0l l@l l 67 CAT 68 l@

7 8 con'T .

o 5 $U y l L l@l0151010 l0 l31316 l@l VJ013l 110l 81 O l@l7501410 l 9 l 810 74 FIEPOH T DAT E . 80 lh 7 8 LO 61 DOCKET NUM0 ER 63 EVENT DATE

, EVENT DESCnlPTION AND Pno0ABLE CONsEQUEt,JCES h O 2 l While performing routine surveillance, CEA 29 exhibited erratic position indicatiion  !

lO ;3 ; l and was declared inoperable. CEA 29 position was verified as fully withdrawn by its[

O 4 l top limit switch ar.d the pulse' counting system and operation ~ continued in accordance i O s I with Technical Specifications Section 3.1.3.3 action C1. l

~

l 10161 L l

101711 l

l0 la l I 7 8 9 DE CODE S DC E COMPONENT COOE SUBC dE $ E lOl91 l I l F l@ U@ (_Aj @ l E l L l E l C 10 l N l@ LZ_j@ 20(l.l @ 18 19 i 8 9 10 11 12 13 OCCURRENCE HEPORT REVISION

_ SEQUENTIAL EVENT YE AR REPORT NO. CODE TYPE N O.

LE R/RO

.@ ,agg I al 01 [_l 10l1l~0l [g_] 10 13 I 28 M LL_,J 30

[.--J 38

[_0_]

32

_ 21 22 23 24 2G 27 KN AC P ON PL PT E HOURS S IT F 1 B. SUPPL 1 MAN FACTUF Ett

[A__l@lAl@ [.Z__j@ [__Z_j@ l010l010l 31 40

[JLj@

41

(_y_}@

42 (fLj@

43 lCl4l9IOl@

44 47 '

33 34 35 36 CAUSE DESCnlPTION AND ConRECTIVE ACTIONS h li ] O l lThe cause of the erratic Reed Switch Position Indication was an intermittant open I-li li l iconductor in the cable or connector from the reed switch for CEA 29. Followina a I

. !i l 21 l reactor shutdown (unrelated) at a later date, the cable / connector assembly was reolacedl Ii ia i l and the positior$ indication system for CEA 29 was restored to operable status. I I

1:1411 SO 7 8 9 STA S  % POWE R OTHER ST ATUS 15 RY OISCOVERY OESCRIPTION li I s l [E_j@' l l l 0 l O l@l 'HA OPERATOR OBSERVATION I l ~ l B l@l'

+

f A TIVITY CO TENT REMA$!D Or nEMASE I.OCATION OF RELEASE

, Ii Io I 1 2.] @ L Il @ l AMOUNT NA OF**

ACTIVITY I @ l-NA "'

l

' " ' ~

l

,EnSONN r,OS#ES

! NUuoEn Tv,E ~

l lirl71101010 l@LZ_J@oESCnrTiON @

l NA

" " Pt nSONd'i,uu'a[S

Nu m n OtSCnenON@ - .

i HA 7

i a 8 9 1010101@l12 11 -

80 LO'S OF On DAMAGE TO FACILITY

• TYPE DESCFilPTION ii191[2_j@l NA A004199 l SO 7 39 9 10 ntu

• mm LNjtt@otSCittPTION NA I IlIlll'liIIIIl

[_ _ m