ML19274D337

LER 78-067/03L-0 on 781217:while Attempting to Put Drywall Continuous Air Monitor in Svc,Discovered Inboard Isolation Valve A.O.2-9207A Would Not Close.Caused by Dirty Parts & Water in Valve

ML19274D337
Person / Time
Site:	Dresden
Issue date:	01/16/1979
From:	Korchynsky M COMMONWEALTH EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17173A503	List: ML17173A501 ML19274D337
References
LER-78-067-03L, LER-78-67-3L, NUDOCS 7901230203
Download: ML19274D337 (1)

Text

' O. ;i. NUCLE Ad HEGU L A) Gd Y CGl&1lalGlJ N RC :- C ,4M Lu (7* 771 '- . UCENSEE EVENT REPORT CONTROLCLOCC} } } l [ ] l (PLE ASE PRINT oR TYPE ALL REQUIRED IfJFORMATION) i 6 0 1 l Il L Dl Rl SI 2l@l0 l0 l- l0 l0 l0 l0 l0_l- l0 l0 @l4l1llj 1l1l@l l jg i 8 9 LICENSEE CCOE 14 15 LICENSE NU?.ickR 23 2ti LICENSE TYPE J0 b7 CAT 58 CON'T

' S$RNlLl@lOl5lOlOlOl2 3l7l@[1l2l1 l7 l7 l8 !@l Ol lj 1l 6l 7] 9]@

na 69 EV ENT DATE 74 75 REPORT DATE 80 I 8 W Gl DOCK E T NU'.ta E a EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h o i 2 I [ During normal operation while attempting to put the drywell continuous air monitor I l

o i3 l into service ic was discovered that the inboard isolation valve A.O. ?-9207A would _

o ia not close. As required by T.S. Sec 3.7.D.2 the outboard isolation valve was operableI and closed. This event had minimal safety significance because the line was isola- I o a_ l g g  ;

ted by the operable outboard isolation valve.. This type of event has occurred before l g,,  ; at Dresden (R.O. 78-15/03L-0). [

63 SY S T E *.1 CAUSE CAUSE C O'.i7 VALVE COLE CODE SUSCCCE CO!.'PO?,EN1 COOE SUECOCE SUBCODE o 9 l p l n l @ y @ [_n_j @ l V l A l L l V l 0 l P l @ El@ Ny @

7 8 9 10 11 12 13 la 19

,_~ SE QU ENTI AL OCCURRENCE REPORT REVISION EVENT YE AR R EPOR T NO. CODE TYPE N O.

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@ ylR,y RO l-l l 0l 6l 7l26 I/ 10l3l lL l l _j (_0]

_ l217l8l s2 23 24 27 28 29 30 PRIVE COMP.

31 32 CO*.tPON E N T EFFECT ATT AC'P.1d N T N P R O-4 ACTION FUTURE SHUT C O7iN MANUFACTUREP TA*EN ACTION ON PL ANT METHOD HOURS 24 SUBMITTED FORMdUd. SUPP LI E R lD 33 l Zlg 34 35 g l Z jg 36 3l1 0l0l0 40 l lN g 41 lN g 42 lXlg 43 lAl4l9l9lg 44 47 CAUSE CESCRIPTION AND CORRECTIVE ACTICNS

, ;o j Upon investigation of the valve the Asco solenoid valve (CAT #830282 RF) was found tol

, , g be sticking. The cause of the failure was determined to be dirty parts and a small *I i

[ amount of water in the valve. The solenoid valve was rebuilt and the valve onerarM

, 3 [ satisfactorily. l I

1 4 I 80 1 8 9 STA 5 *4 POWE R oTHER STATUS DISCOV iY DISCOVERY DESCRIPTION NA Al@l#6 Operator Observation l 1 5 l El@ l 0l 9 l 5 l@l" '#

l Ac' Tivi rY C$rEur PELE ASE D OF RELE ASE AMOU'JT OF ACTIVITY LOCATION OF RELE ASE NA l

[i 6 l') Zl @ l10Zl@l NA 44 l

45 80 7 d 11 PERSGrAEL EXPOSURES -

NUMBER TVPE D E SCRIPTION i 7 ]0}0]0lhlZj@l -

NA 7 8 9 11 12 13 PERSONNE L INJUPIES - *

• Nuvatn oESCnmTiON@

NA Q / Q_.j} O g C]

l lt l48l 9l 0] 0l 0l@l 7 11 12 '

LOSS TYPE OF COR DAMAGE TO FACILITY h E SCRIP TIO*4 s./ l ltl3llZl@]

7 8 9 .to NA 1

PUBLICITY r NRC USE ONLY ISSU E D

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fiTTl w@ DESCRIPTION l NA I .lllllll1IllIl4

• 7 .e s ,n 68 69 .

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C E. ECc7a',7 7 orchynsky N O M '

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