05000368/LER-1980-049-03, /03L-0:on 800707,during Mode 3 Operation,Emergency Feedwater Valve 2CV-1075-1 Failed to Open from Control Room. Caused by Failed Valve Actuator Electric Motor Due to Loose Brush Connection.Motor Replaced & Hydraulic Sys Chec

/03L-0:on 800707,during Mode 3 Operation,Emergency Feedwater Valve 2CV-1075-1 Failed to Open from Control Room. Caused by Failed Valve Actuator Electric Motor Due to Loose Brush Connection.Motor Replaced & Hydraulic Sys Checked

ML19330C375
Person / Time
Site:	Arkansas Nuclear
Issue date:	08/05/1980
From:	Pendergraft R ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19330C370	List: 05000368/LER-1980-049, Forwards LER 80-049/03L-0 05000368/LER-1980-049-03, /03L-0:on 800707,during Mode 3 Operation,Emergency Feedwater Valve 2CV-1075-1 Failed to Open from Control Room. Caused by Failed Valve Actuator Electric Motor Due to Loose Brush Connection.Motor Replaced & Hydraulic Sys Chec
References
LER-80-049-03L, LER-80-49-3L, NUDOCS 8008080295
Download: ML19330C375 (1)

LER-1980-049, /03L-0:on 800707,during Mode 3 Operation,Emergency Feedwater Valve 2CV-1075-1 Failed to Open from Control Room. Caused by Failed Valve Actuator Electric Motor Due to Loose Brush Connection.Motor Replaced & Hydraulic Sys Checked

Event date:
Report date:
3681980049R03 - NRC Website

text

.

(v)

NRC FORM 366 U. S. NUCLE A R REGULATORY COMMisstON LICENSEE EVENT REPORT EXHIBIT A CONTROL SLOCK: l 1 I l 1 1 (PLE ASE PRINT OR TYPE ALL REQUIRED INFORMATIONI [0TTl l AlR l Al Nj 0 l2 lglS0 j0 l - 10 l 0 [ 0l 0l 0 l-l 0 l0 g l1 l 1 l1 l 1 lgl l lg 7

8 9 Loc (Nsit COOL le I

LICENSE NuM81a 2$

2G Lec LN56 11 PL JG

$7 CAT Sd CON'T E

"',',3 [Lj@l0 l 5 p l0101316 I 81@l 017 I 017 l 810 l@l 01810151810 l@

3 0

60 ml DOCKET NuMBEa 68 89 EVENT DATE 14 76 HEPOa7 DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h 1 Durina Mode 3 operation. Emeroencv Feedwater Valve 2CV-1075-1 failed to 1 O 2 i open from the Control Room.

The alternate Emergency Feedwater flow path i 0,

Iwas operable.

Similar to LER 50-368/79-054. Reportable per Tech Spec l

O.

6.9.1.9.b.

I 0 s O 6 l

l Lo_LLI I 1

O e i I

'c50"

• leil sSciEs su',Uu.

s"licN3.

LouPONikTcout B, B.

IW I Bl@ L,,EJ@ LAj@ l VlA I L IV 10 IP l@ [ AJ@ L.Z_J @

i2 2

LEA EVENTvfAa at oat E

Y N

@ tem'NO18101 L-l 101 4191 [t_J 101 31 LLj

[-j [0j t

_2n 22 23 24 26 27 22 29 JO 31 3J TAE N A O

LA T METM HOvas 22 s8 iT FO m

SUPPL E MAN A TUR'a LAj@t zJ@ LL@

l Zj@

l 0101 01 u I [N_J@

[,NJ@

[Nj@ lW l 1l2 l 71@

32 34 35 36 33 40 el 42 43 44 er CAUSE DESCRIPTION AND CORRECflVE ACTIONS 27 I Investication revealed that the valve actuator electric motor had failed i i O FrTr1 I due to a loose brush connection.

The motor was replaced and the hydraulie isystem checked.

2CV-1075-1 was returned to operable status within 12 hrs, I neeting the requirements of T.S. Action 3.7.1.2.

, 3 i

t i

' *Us' OTwensTATus @"'sEny' Oiscovany OescaieriON @

rA seOwen [G_J@ 10 l 010 l@lMode 3 00s 1 [Aj@l NA l

i s Anivity c '4 i

a l

att:Aseo 0,O TINT AMOUNT OF ACTivify @ l LOCANON OF afLEAst @

art!Ast I ITl (Zj @ [Zj@l NA l

NA l

,insONNitex,0sMas Oescai,T.ON @

r uvueen Tm l01 Ol 0l@[Zj@l NA l

i i

' esasONNe't.N;u'a'ics a

ocicai, TION @

Nu.ca 1010l0 l@l NA l

i a 1

7 8 9 il 12 80 1 (

DE a PT ON [lj@l NA l

i o l

'"*"* 's*caietiON O NRC USE ONLY

,[susi@l NA 1 lllllllllllll 1L

> 0 NAME OF PREPARER W

PHONE:

800_8080 $