05000313/LER-1980-001-03, /03L-0:on 800114,while Performing Surveillance Test,Hydrogen Purge Supply Isolation Valve CV-7444 Failed to Close.Caused by Oxidation on Torque Switch Contacts, Resulting in High Resistance to Closure.Contacts Cleaned

/03L-0:on 800114,while Performing Surveillance Test,Hydrogen Purge Supply Isolation Valve CV-7444 Failed to Close.Caused by Oxidation on Torque Switch Contacts, Resulting in High Resistance to Closure.Contacts Cleaned

ML19296B792
Person / Time
Site:	Arkansas Nuclear
Issue date:	02/13/1980
From:	Branlett L ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19296B784	List: 05000313/LER-1980-001-03, /03L-0:on 800114,while Performing Surveillance Test,Hydrogen Purge Supply Isolation Valve CV-7444 Failed to Close.Caused by Oxidation on Torque Switch Contacts, Resulting in High Resistance to Closure.Contacts Cleaned 05000313/LER-1980-002-03, /03L-0:on 800114,while Performing Surveillance Test,Hydrogen Purge Supply Isolation Valve CV-7448 Failed to Close.Caused by Oxidation on Torque Switch Contacts.Contacts Cleaned ML19296B783
References
LER-80-001-03L-01, LER-80-1-3L-1, NUDOCS 8002210506
Download: ML19296B792 (1)

LER-1980-001, /03L-0:on 800114,while Performing Surveillance Test,Hydrogen Purge Supply Isolation Valve CV-7444 Failed to Close.Caused by Oxidation on Torque Switch Contacts, Resulting in High Resistance to Closure.Contacts Cleaned

Event date:
Report date:
3131980001R03 - NRC Website

text

,a,

9 NRC FORM 366 U. E. NUCLE AR REGULATORY COMuiss ON (7 77)

LICENSEE EVENT REPORT EXHIBIT A CONTBOL BLOCK: l l

l l l lh (PLE ASE PRINT OR TYPE ALL REQUIRED INFORMATION) 6 6

l o l 1 l l Al R j.A l Nl 0 l 1lg 010 l - l0 0l 0l q 0l-l0 p l g 1 [1l1 ]1lgl l ]g e 9 LeCENsit Coot le D

LOOiNst NUM$iH 2%

26 LICLNht t vPg Jd b7 CAI be CON'T F6TD i "' LL_GIO I s p 1010 3 I 113 l@l 0 Il 111418101@l 0 I21113 l a 10_I@

P 8

60 61 ooCKET NUMetm 68 63 EVENr oATg to 75 HE PonI DaTE to EVENT DESCRIPTION AND PROBABLE CONSEOUENCES h ITTTl I While oerforming Surveillance Test 1304.70 Suoniement I. CV-7444 (A hydrogen ibm purge supply isolation valve) failed to close.

Immediately the redundatei Lyal va - rV-7441 wat verifipd einspd _

Thorn havn hoon nn cimilar l

o a

n s ioccurrences.

Reportable per 6.12.3.2.(d).

I 101611 IoI>II I

o e i I

'cS's"

c"o'i s '.'C$i EOS',.

d'Ces t

w uro~surCouc E,

I sl F l@ L,,EJ@ L,,DJ G,I V I All V l0 l P l@ l,,l_J@ L,oZJ @

,o siouE N Y t A L oCLuR R r NCt atPour a f vision g g a.Mo evfNTvfan stPOA? No.

CODE 1YPL No

-@ := _l 8101 L-J 1010111 id 10 3i LL_J L-J loJ 22 23 24 26 27 28 9

20 31 32 1 Ast t N A floN PLA T M T HQvR.

S S IT

, o 81 b H SUPPL t R VAN FACT p[R LILJ@LZJ@ llj@

LZJ@

10 10101 o f LtLJ@

LLIO LA_J@

l i 2101 Ol@

33 34 3b 36 JJ 40 el 42 43 aa 4,

CAUSE OESCA# TION AND CORRECnvE ACTIONS h m ITha To roup Switch contacts had oxidatinn on them This caused a high I

iii,i l resistance contact, which would not permit the valve to go closed.

The i

i 7 Icorrosinn was cleaned nff the enntacts and the valve was verifipd I

m I operable.

i Lu2J l I

'd'AWs' of ia sv.1us @ "?Ja ?,?v' o,sCovia, oisco.,,,o, @

~

v owi.

LLL5J LGJ@ I n n I n l@l na i la__J@l Surveillance Test I

a

" Cr,viiv C 'Le~r

.ctaisio o,o

.o0v~1 or *Criviry @

toc.,,ouo,neiese@

a Liase LLJ @ LZ_J@

NA l

NA l

o

' '..so~ 'd i,,osais a

oisC.,P1.o~ @

nuo...

1v,.

101 0 0[@ y @f NA l

i i

' '..so~~a',~,uns a

orsC. rio~@

wuo.ca L,'_L*J.101 010 l@l l

NA ii n

1 Pg otsCR PT o llj@l NA l

i o 7

A 9 10

'd PUBLICITv issU(D ot sCRIPTioN 45 NRC USE ONLY L2_Loj ~LNJ@l NA 1 llll[;;;;;;;[

7 8 9 10 ca 69 50 NAME OF PHEPARER PHONE:

8002210 {$