05000368/LER-1981-007, Updated LER 81-007/03L-1:on 810206 & 0318,control Room Emergency Chillers 2VE-1B & 2VE-1A,respectively,were Declared Inoperable.Caused by Low Oil Pressure in Former & Oil Unloader Relief Misadjustment in Latter

Updated LER 81-007/03L-1:on 810206 & 0318,control Room Emergency Chillers 2VE-1B & 2VE-1A,respectively,were Declared Inoperable.Caused by Low Oil Pressure in Former & Oil Unloader Relief Misadjustment in Latter

ML19347E277
Person / Time
Site:	Arkansas Nuclear
Issue date:	04/17/1981
From:	Pendergraft R ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19347E275	List: 05000368/LER-1981-007, Updated LER 81-007/03L-1:on 810206 & 0318,control Room Emergency Chillers 2VE-1B & 2VE-1A,respectively,were Declared Inoperable.Caused by Low Oil Pressure in Former & Oil Unloader Relief Misadjustment in Latter
References
LER-81-007-03L, LER-81-7-3L, NUDOCS 8104240506
Download: ML19347E277 (1)

LER-1981-007, Updated LER 81-007/03L-1:on 810206 & 0318,control Room Emergency Chillers 2VE-1B & 2VE-1A,respectively,were Declared Inoperable.Caused by Low Oil Pressure in Former & Oil Unloader Relief Misadjustment in Latter

Event date:
Report date:
3681981007R00 - NRC Website

text

\\

UPDATE REPORT - PREVIOUS REPORT DATE 3/4/81 O

N RC FORM 364 U. S, NUCLE AR REGUL ATORY COMMISSION LICENSEE EVENT REPORT EXHIBIT A CONTROL 8 LOCK: l l l l ] l lh (PLE ASE PRINT OR TYPE ALL REQU' RED INFORMATIONI l A] R l A l Nl 0 l 2 l@isl 010 l -10 l0 l 0l Og 0 l-l 0 l0 lg l1 [ 1l1 l 1lgl CAT 8g l

o i 9

LICEN E4COog 64 UCENst NUMSER 2,5 26 LectMst 3.,(

JG 67 7

8 CON'T l' "c' [L_)@l0 l 5' p 10 l 0131 618 l@l01210 l 6 l 8 l1 l@l01411 1718 l1 l@

o i i

8 60 65 ooCKET NUMetR 68 60 EVENT oATE le FS ME,oR T e4TE 80 EVENT OESCRIPTION AND PROBA8LE CONSEQUENCES h 1During Mode 1 operation, while performing monthly surveillance testing of 1 o 2 F5TO icontrol Room Emergency Chillers, 2VE-1B was declared inoperable on 2/6/81 I l o i i l& 2VE-1A on 3/18/81. The alternate Emergency Chiller remained operable ini ieach case.

Other occurrences involving the Emergency Control Room Chillers o s oa tare: LER's 50-368/79-050,79-053, 79-076,80-026, 80-054,80-070 & 80-0926 l Reportable per T.S. 6.9.1.9.b.

I o,

oe I I

'No's"

'$cT!

• • "Ms w'Elue sEE/or s c coucous=r cout F6TO I Al AIO LEj@ [B_j@ l Hj T l ElX l ClH l@ O@ g @

~

~r [..

i.'3"A"'[

'id*"

It%'

"'"1'"

u,...

v

@,a',% 18 Ill

[-J l 0101 71 Ld 101 31 [L_J 1--J L1J 21 22 23 24 26 27 28 29 JO 31 32 f. KEN

.C o

,L T

MET Oo OURs s8 17

,OR nUH sU,,(

U.N r.CTURER U}_J@LIJ@ LZJ@

LZ_J@

l01 0101 01 L.NJ@

LtJJO LA_j@ lCl7l8lOl@

33 34 3b 36 33 40 4

e2 e3 es og CAUSE DESCRIPTION AND CORRECflVE ACTIONS 27 IInvestication revealed the unit had triooed due to low oil oressure. The i i o [E] 12/6/81 low pressure trio resulted from an exoansion valve which had i

[ m ]1 developed a leak.

The leak was repaired. The 3/18/81 trip occurred during Ino-load testing. Adjustments were made to the oil unloader relief to i

3 tprevent oil loss under no-load conditions. The chiller failures are beingi i.

',Ic j#yes tigated.

orneairarus @

,.scoven, oiscov., o sc,..,no., @

So sr.ius sco-sa o

LE_J@ l 019 I 01@Bl% FP on 3/18l [AJ@l Testing l

i 5

' !Mvin C' TENr N

eu.s o o,C A

- ov~1o,,crivin @ l m, no,, o,,,u.s @

aiu.s.

LZ_1 @ Iz__j@e,s l

NA l

l NA i a

...so..'1..os a

a om...no,. @

u...

n,.

10 I ol 01@[ZJ@t NA l

,saso=~e't.~2u', fits

=

oescainnoN@

wuwsca lol010l@l NA l

i x

' horoao"4,ce'o,ciung

[

a [2_j@l NA l

i o

, su,'"@l'"'d's'c.,,no @

NaC usE ONLY llL NA i llllpg;;;;g;l 2 '

Rex Pende'raraft 501/968-2519 NAuE OP PRcPAngR

,noy,;

8104240500