05000368/LER-1980-005-03, /03L-0:on 800123,during Steady State Mode 1 Operation,Reactor Coolant Leakage Calculation Indicated Approx 3.6 Gpm Unidentified Leakage.Caused by Packing on Pressurized Spray Valves Leaking Excessively

/03L-0:on 800123,during Steady State Mode 1 Operation,Reactor Coolant Leakage Calculation Indicated Approx 3.6 Gpm Unidentified Leakage.Caused by Packing on Pressurized Spray Valves Leaking Excessively

ML19296B359
Person / Time
Site:	Arkansas Nuclear
Issue date:	02/15/1980
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19296B355	List: 05000368/LER-1980-003-03, /03L-0:on 800120,during Mode 3 Operation, Emergency Feedwater Flow Control Valve Failed to Close on Demand.Caused by Lack of Hydraulic Pressure 05000368/LER-1980-004-03, /03L-0:on 800107,during Mode 1 Operation,Core Protection Calculator B Failed.Channel B DNBR & Linear Power Density Trips Were Bypassed Placing Reactor Trip Logic in two-out-of-three Trip Sequence.Cause Unknown 05000368/LER-1980-005-03, /03L-0:on 800123,during Steady State Mode 1 Operation,Reactor Coolant Leakage Calculation Indicated Approx 3.6 Gpm Unidentified Leakage.Caused by Packing on Pressurized Spray Valves Leaking Excessively 05000368/LER-1980-006-03, /03L-0:on 800123,during Mode 1 Operation,Core Protection Calculator B Failed,Generating DNBR & Linear Power Density Trips in Primary Power Sys.Cause Undetermined. Channel Restarted & Declared Operable ML19296B354
References
LER-80-005-03L, LER-80-5-3L, NUDOCS 8002200458
Download: ML19296B359 (1)

LER-1980-005, /03L-0:on 800123,during Steady State Mode 1 Operation,Reactor Coolant Leakage Calculation Indicated Approx 3.6 Gpm Unidentified Leakage.Caused by Packing on Pressurized Spray Valves Leaking Excessively

Event date:
Report date:
3681980005R03 - NRC Website

text

.

hRC FORM 366 U. S. NUCLE AR REGUL ATORY COMMIS$10N (7 77)

LICENSEE EVENT REPORT EXHIBIT A CONTROL BLOCK: l 1 l

\\ lh (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATIONI 6

6 foTil l AlR l Al Nl0 lp [g 0 l0 l - j0 l 0 l 0l Oj 0 l-l 0 l0 lg l1 l 1l1 l l jgl l lg 7

8 9 LICENSEE CODE na h

lac (NSE NUMBER 2s 26 L6CE NSE t VFL JG bl C.T btl CON'T sl,% LL_J@l0 I s p 10 i 01316181Gl01112 3 i a l 01@l012 11 1 s 01 @

o i 7

8 60 61 DOCK ET hum 8Ep ed 69 E Vf NT D.TE 7e n

syPoHTDaTE 80 EVENT DESCRIPTION AND PROB ADLE CONSEQUENCES h oi2 IDuring steady state Mode 1 ooeration. the Reactor Coolant Leakaae calcu-I llation indicated anoroximately '4 6 GPM unidentifiod leakage exronding that o

pilowed by T.S.3.4.6.2.b.

A containment building entry was made and it i

o 4

was verified that no pressure boundary leakage existed. The maiority of I

o s

t o is 1 Ithe calculated leakaae was identified as that defined by T.S.l.14.a.

No I

lolilIsimilar occurrences.

Renortable nor T-S_6_9.l_9_b.

I i

I o

a

'CS'E

'[c"o'E su' ecee

.u',Y.E.

sMcEE

^

towPoNsNT cout e,

i C h l@ LEJ@ LB_J@ l V l A I l IV l E l Xl@ [E_l@ [X_j @

9 i.,

2o sf QUE NTIAL OCCUnarNct nrponr PtvisiON Lg n no EVENvvf**

S E Po4 T NO C00E TYPt m. O

@ fu'; g '

l 810 I L_-J l olo I s l trJ 101 31 LLJ l, -J loj 2n n

23 26 n

.m

.w 3

u TAK(N. TO PLA T VETw HOURS sg IT

,Om

• sUPPLt R WAN FAC U (R LXJ@LELJ@ Llj@

L1.J@

10 D 1010 Llij@

INi@

LILJ@

I C 161 31 s t@

3J 34 35 36 Je 0

el 47 43 as 4

C AUSE DESCR.PTION AND CORREC flVE ACTIONS li io l Packing on Pressurizer Soray valves. 2CV-4651 and 2CV-4652. were found to i li t i 1 hp leaking oxenssively.

Ioakago frnm narking was ennted thrnngh laak-off I Ilines to the Containment Buildina sump.

Minor leakage was identified at i

, 2 1 i s i Reactor Coolant Pumo "C" seal.

Maintenance will be performed on leak I

m Isources during February outage.

I

'b'.'Ws' orwe sr rus @ Eses $ v'

~

v owi=

o,scovEmv e,sen,,noN L3J@ l1 l 01 d@l l4A I

LC_J@l NA l

i s

".a vi,.

co'L E ~T

'5

=0-

.oouNr o, C1,v,1, @ l toc.,,oNo,,,,u.s,@

.e u.s.o o, at u.u li-Ic I LZ J @ LZ J@l NA l

NA l

,insoNNto.. cs " Es ao ci sc.. 1.c,. @

,.u 1,,

10 0[ Of@[Zj@[ NA i

i l

,E so~Ne't,suiis w

cesC.,veN@

No

.c.

101010 l@l NA i

x l

7 8 9 11 12 TYPE OtsCRPTON LLLoJ l z.J@l NA l

7 A 9 10 PUSLsCITY 4S DE sCa sPTsoN NRC USE ONLY issue D@l LEJ NA 1 l;illll;;i;;l 2

I 8 9

'o CA t,' 9 po Chris N. Shively MU%b3M NAME OF PREPARER

,,0y, 8002200 y