ML19225B033

LER 79-007/03L-0 on 790616:during Heatup,Emergency Feedwater Pump Automatically Started W/Inadvertent Actuation.Caused by Valve Lineup Error.Outboard Pump Bearing Found to Be Hot Due to Faulty Installation.Maint Procedure Revised

ML19225B033
Person / Time
Site:	Arkansas Nuclear
Issue date:	07/16/1979
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19225B031	List: ML19225B030 ML19225B033
References
LER-79-007-03L-01, LER-79-7-3L-1, NUDOCS 7907230354
Download: ML19225B033 (1)

Text

-

sn ,,ac,oau u u s 'au E An aEcot.Toav couuizioN M

e om LICENSEE EVEN; -U O,R T EXHIBIT A

,n -

CONTROL E. LOCK jI f $ (Pit ASE PRINT OR TYPE AL L f4f OtnH E D INF ORMATIOres o i

. , IA 1 tict~st R l AlE Ncoul 011 l@l0 i4 u 10 l -l 010l uu .a m O! O I OJ - 0l Og4a 1 Il i11 1 @[ l [g s oest ie - -

m*

CON =

L1U.J

.CEE LL)SIO I s i or o I oi 3 i 113 r3 016 r l i6171 9FSI 017 l 116I 71 9iQ EvtNT orscaIencN a$o raceNe cS~st$$cs:Es h o s Durine unit heatup, Emergencv Feedwater nunp, P7B, was i i <, : 3 l t automatically started with an inadvertant SLBIC actuation. t eiA 1 SLBIC actuated due to a valve lineup error. The EFW I o s i pump was stopped after 26 minutes. At tha t t im e i t wa s i

c. n i identified that the outboard pump bearine was extremely I c >

! hot . Bo' k EFW punus are required t_o be operabl e during heatup and l oi- t operation ner T.S.3.4.1.4 Similar to LER 50-313/77-003. Reportable per_j a v t.5.u.l.i5.20.

'_ ? ! Y Cl-E

• CaesE i ,

cc:t af s t:c:t sag u acc t s cc-u ,o su (E lo191 l C l HlO LEJ@ [B_J @ l Pl U n u

$ E C'. E Os I' A.

, M1 PlXIX l@ IL.@ 9@ ,

m I

ga g E V E A T Y E A f1 b l ,, b' t I & T I'k h 3J N A EI*Ca f NO s .E ' wet

@ s"g g Aj,'L" .a l 71 9 !

i L ._J l o i 3 71

. M, I oi si LLJ [-J LOJ 3 .,

A C TION FUTLpE E8  !.  :;,c t s .8,E .,, vEg7

u. E s A:ves wm mg 3 + t a.t. s,. m ,c.,c4.

N o r, s r o ,f, a,

,m .c is,e.c

, s { gn,, m 00 08 LAJ8Lpj@

toioloi 01 LNJ@ L1J8 LA_JO J

43 4 4; di ' T 10 l ' I 51@ g, cav:s oescaieric-s t~; canacc re.e ac tioss @i i <

lInvestication revealed that the bearing had failed due to l ir, I faultv installation durinc previous preventive naintenance. i

,i. I The maintenance procedure has been revised to i i ,

I provide cl ear-cut instructions. Pump bearing was replaced l i#A l and pump returned to service.

, e ,  !

PO

$TA 5 a

% Pos vE R O *'* E n 5 T A T US CL f ts ..EH. D E ' U ' P I'0N i >

LC_j@ l 01 010 is NA l

[A_J@{NA

" " I Ac'r,w r y cSTEsT '"

HE LE ASEC OF RE L E A'.E A vc,uNT OF A CTi vi T v

' r u t,0, c r b E L E ASE J e 9L ~J @'O Q@l NA Ii

! NA I FI H 50N .t L [

• F'.)S yr4 E $

44 4)

M s.%8p f e TvPE D J n ' r T.ON YJ

i )

, , ,l ol 0 lo IGL~-JSL n u n NA I

• t P'.ON N E L INJLA E5 & v N, vet n O N il> l O! 0 l0 l@ E;csberi'i NA h 1 , s n o i (05: g TVDEf. 5 Cs8 DEvLL 4 Fe V tp A Ti L 1%

E 10 F AJ L i f # h i o ggi NA ,u I' df ( W s I

'I-in e n oEs-enos @ Nm a<u*

LSj$l NA

> - ,c l 1 i ii!ll'l lll eavt er mrawe- Chris N. Shively ,. . ,, a 501-96S-2519 4i3 0 0*J 79072 3mmee. ~

I