ML19323J022

From kanterella
Revision as of 13:20, 10 December 2019 by StriderTol (talk | contribs) (Created page by program invented by StriderTol)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search
LER 80-045/03L-0:on 800513,deviation of Plus 3% Between Auxiliary Shutdown Panel Indicator LI-1459C & Control Room Indicator LI-1-461 Was Exceeded.Caused by Packing Leak on Isolation Valve 1-RC-129.Valve Repaired
ML19323J022
Person / Time
Site: North Anna Dominion icon.png
Issue date: 06/11/1980
From: Cartwright W
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19323J018 List:
References
LER-80-045-03L, LER-80-45-3L, N-80-12, NUDOCS 8006170650
Download: ML19323J022 (2)


Text

. g.._

._ . _ _ . _ . . _ . . . . . _ _ _ . ___ _.

__ . .. _. _

.

_ . .-

a Tn LICENSEE EVENT REPORT cowTnos.si.ocx: 1 i I f I ! l tit. sass Paswr on Type As.L asOUIRED INPORAAATIONI i e@

o i at ls l Vl ucanssa

.

A I NIc=ce Al S l 1l@l 0 l 0 I - l 0ucansa

i. is I 01nuassaOl d 0 I -I OI aOl@l a 4 ucassal 1I ll rvra1l 1aol@ls7 I or las @

CCN'T oi1i E."ca# lL @lOl 5l 010lnlal3l g@l 0seI q lavsur 1l. c4Tual o ! 0 @l0 74 7s l 6marcar l 1l oars ll 8I O sol@

cocxar uusen es

,

s ao as EVENT cascatrTioN AND PRCBA41.2 CONSEQUENCES h

.i o e 2 : I While performing periodic test PT 41.1 on the pressurizer level indicators, the!

.to,2, Iallowed deviation of 1 3% between Auxiliary Shutdown Panel indicator (LI-1459C) {

[o,o land the corresponding Control Room indicator (LI-1-461) was exceeded. Since thel

t o i s , I remaining level indication channels were available, the health and safety of '
l o 6s i l +ha ca-ar,1 cub!4c wave nnt a ssa c+ a a TM e 4+a- 4e -ann-+,bla en -em n +- *e I fo,y; lT.S. 6.9.1.9.b. I s'

1, , e n t I

88 7 ss *

  • EE" *S5' sEEe co-o swrcoes su".ccoe 35^

Isis! I cl d@ W@ LI,,J@ a Iuv l Al Li vt E l Xlh l Flh m[Dj h

. . i. u i. i.

N SEGJWf7144. OCCuanENCE RsP4pt?

.

c e rvsaa nero=r ao. caos m= mo.

@ =un o_n18101= [. j 1014 i s 1 y 10l3l gm y W m

= 2. m n = = 2.

fann IES om es uvr E wouns @ "E pe*nasaus. "sureuY unaupactuasa k@l,,,L,,{@ W@ (.Zj@ l0 IOl 0l 0I [1,j@ la NIh lN Ih la E I O l 9 I 5l a

@

= as = = n <a as a cAs.:sa essCRIPT!ON AND COMMECTIVE ACTIONS 27 i s t o i lThe level deviation was due to a packino leak on the isolation valve 1-RC-129 I I

liiiileausino a decreased level in the reference lea. This caused a hicher than g lactual level indication. This valve was repaired and the perior .: test (PT-41.1)t iitytl performed prior to mode 1 operation. I I

iii41 I ao

a e 4 POustA CTl+gn 3rATi2 ENY DIS"OvgivD N IT TUS l

lt i s l W@ Il l 0 l 01@l NA as l W e

hl Surveillance Testina se 7 ay g u r as LocAT2ose ce natsasa @

assi aAsso i t i a I Lg,j @on asiaass2J@l NA 1

anscuwt Cp acifvery @I NA 1 I

' ' " * "

' .c.se .t. ims Ls Sumeen me :sscnimca @

NA i f i i t 1010 l 0l@[z_f@l" "

  • ' '

esaso s'i.'inuu' dss wuwesa t-tt!l0l0lO!@l scscatme=@ N A to I

7 8 3 11 12 LCES CS CR CAMAGS ~C SACuT1 &

Tvet 043CRiPTiCae v NA l I}l l 'l EG

  • 3 5 'O

.gs;;gg CM1PT*Cre iiiiiiiiiiiri:,

,

2, 3 3 mes . to NA i SS GS 13* 3 uAug er ,.sma3 w. n. cartwricht ,,,,cug. 703- A94-5151 {

- - 8 _. _ _ _ _ _ _ _ _ _ . . _ . _ _ _

n n.

Virginia Electric and Power Company North Anna Power Station, Unit #1

Attachment:

Page 1 of 1 Docket No. 50-338 Report No. LER 80-045/03L-0 Description of Event On May 13, 1980, while performing periodic test (PT 41.1), the pressurizer level indication deviation on the Auxiliary Shutdown Panel

-

was found to be greater than the P.T. acceptance criteria (i3%). This item is reportable pursuant to T.S. 6.9.1.9.b.

Probable Consequences of Occurrence The minimum number of instrument channels remained operable in the control room. The auxiliary shutdown panel monitoring channel was returned to service within 30 days as per T.S. 3.3.3.5. Therefore, the health and safety of the general public were not affected.

Cause of Occurrence A packing leak on isolation valve 1-RC-129 caused a decrease in the level of the reference leg.

Immediate Corrective Action A maintenar.ce request was submitted and the valve was repaired during the May, 1980 outage.

.

Scheduled Corrective Action The periodic test (PT41.1) was performed to prove the adequacy of repair.

Actions Taken to Prevent Recurrence No further actions are required.

l l

_ . - . - --

l

.