05000327/LER-1981-058-03, /03L-0:on 810522,lo-lo Level Bistable Setpoints for Reactor Trip & Safety Feature Actuators Were 1432 Volts. Caused by Component Failure.Bistable Replaced & Calibr

/03L-0:on 810522,lo-lo Level Bistable Setpoints for Reactor Trip & Safety Feature Actuators Were 1432 Volts. Caused by Component Failure.Bistable Replaced & Calibr

ML20004F147
Person / Time
Site:	Sequoyah
Issue date:	06/09/1981
From:	Harding M, Wilkey A TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20004F140	List: 05000327/LER-1981-058, Forwards LER 81-058/03L-0 05000327/LER-1981-058-03, /03L-0:on 810522,lo-lo Level Bistable Setpoints for Reactor Trip & Safety Feature Actuators Were 1432 Volts. Caused by Component Failure.Bistable Replaced & Calibr
References
LER-81-058-03L, LER-81-58-3L, NUDOCS 8106160558
Download: ML20004F147 (1)

LER-1981-058, /03L-0:on 810522,lo-lo Level Bistable Setpoints for Reactor Trip & Safety Feature Actuators Were 1432 Volts. Caused by Component Failure.Bistable Replaced & Calibr

Event date:
Report date:
3271981058R03 - NRC Website

text

..

t ' ll ' ~ ~

LicLN:.L t; EVi.f 4 I 1(LPuli f A

'h CONTROL.0 LOCK: l l

1 l

l l.lh (PL E ASE PHlfAT OH f YPE ALL litOUintu itaF ORMATiONI U

i kUllTlNlSlN !P lI !h!O!O!-l0l0!Ol0l0l-l0IO lhl 4 l 1 l t l 1l 1 l@[ l w@

l i4 is LICLNLE NUvutet 2$

at UCENst tvrt 40 ts CA:

7 8 9 LICEN5tt C00g CON'T l0l l 3$$C$ Lhl015 10 10 l 0 l 3 l 2 l 7 hl 0 I 5 I 2 l 2 I 8 l1 hl0 l6InIoIAl1l@

l' 8

60 48 Oncu ti NUwetM ca 69 EVENT DATE 74 7%

REPORT DAlt 80 EVENT DESCRIPTION AND PROS ABLE CONSEQUENCES h o 2 l At 1400 rnT u f th u n i e 1 nt 49.57 RTP. nu rvei l l nn c e testine en S/0 level ch,nnot I

o 3 l

t

1. 1 t R f rton r i f i ed ebne rho in-in lovoi h4cenhlo -ernnin'en for roncent trin I

l i n,i

_,rnru fo,enrnc n e ri,n r i nn unrn _14 Y' unire (n11nunblo linir ta l 1AR rntec).

l o 4 Th hl.:rnhin u n.- Prinnod to en-nit uith.wtinn : torn-nnt 7 of f f'O 1. ~1.1.1 nmf I

ddl O 6 l

,crion sente"cnt 16 of LCO 1.1.2.1.

There vna no effect on niibile he:11th nr i

l O 7 l

nferv Mn n rotr i nit a necurrencon_

I ITTT1 I so SYSt r M CAU$t.

C AUST COur vatyy COQt CODr Suecout COsA*0Nt NT CODE SueCODE SueCOOf 1o: 21 I rl sl O ls_l O trJ G 1 1 1s I S IT in lu I@ W@ W @

io i

2 o

2.

$ tout NTI AL OCCUnntNCE RtPORT RivtilON Li (vtNTYEAR REPOnT Na 40nE TYPE NO.

O aj;ntm0g'.i s l i l l-J l 01 s! al (2.1 10 13 i LIJ 1-1 l_oj 28 22 2J 24 26 27 28 2,

30 30 32 ACTION FUTUsa t (F8tCT SHeff00wN ATT ACHMENT NPnDe pneutCOM*.

COUPONfNt T Antre ACTIOta ON Plan T M E 1 **00 MOURS sueuti f tO FOnu >Us.

$UpptstR MANUSACTuntR LcJ@W@. LzJ@

12J@

lOl0I0101 l.u.J@

Lsj@

W@

l v 1118 lo i JJ J4

. JS 36 37 40 el 42 43 44 47 CAUSE DESCniPTION AND CORRECTIVE ACTIONS h l i 101 l ThL cvont u,9 ennsed hv n comnonent failure. The bistable was renInced.

l cn-ntorod,nd ehn incern-one innn u,c roturnnd en corvice nr 8

Lt.le_] l cni s h r,s nn e.,n c i 2 I

1800 mr nn os m /si-

• l s ill l is i r I 80 s

e, i

h Es oiscoviny ogsCRief ooN

's^r' A'! N."

srowtR osutn sTA ru;;

e NA I

[gjhl I

IiisIlxj@ l019I9l@l e,, r,.n 41 1 n n en enceine 8

' J,,,,,,

CO#,t.,7 nLE Ano Os ntLt Ast AuOUNT OP ACfiviTY LOCAf TON OF RELE Ast NA l

1 NA li lo l Lzj @ llj@!

Go s

e e to is 44

" m u,,