ML20041B839

LER 82-002/03L-0:on 820122,reactor Bldg to Torus Vacuum Breaker valve,2-1601-20B,failed to Open During Surveillance, Dis 1600-3.Caused by Solenoid Valve VGS-4522 Failure Due to Hardened O Rings.Solenoid Valve Replaced

ML20041B839
Person / Time
Site:	Dresden
Issue date:	02/09/1982
From:	Whalen R COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20041B830	List: ML20041B829 ML20041B839
References
LER-82-002-03L-02, LER-82-2-3L-2, NUDOCS 8202250251
Download: ML20041B839 (2)

Text

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i LICENSEE EVENT R'EPORT l

CONTQCL SLCCK: l l l l l l (PLEA 33 PRINT OR TYPE ALL QEQUICED INFOCMATIONI 6

foIfl 4l I9 l L lUCENSEE Y

D l RCoOE l S l 214 l@l 0 l 0 l - l 0ucENSE 15 l 0 lNUMOE 0 l0Al0 l - l 0 l 0 2h

@l284 l1 l1 11 l1 l@l l l@

uCENSE TYPE Jo 57 GAT 58 CCN'T lol1I 7 8 NuRCE 60

! b hl0 61 l 5 lCOcKET 0l 0 NuMSER l 0 l 2 l 31768 @l69Ol 1lEVENT 2 lQATE 2 l 8 l 274l@l750l 2REPORT ] Ol QATE 9 l 8 l 240l@

EVENT DESCRIPTION AND PRC8A8LE CCNSECUENCES h IoIal l As reactor building to torus vacuum breaker surveillance, DIS 1600-3, was being performed]

,o,3, g during normal unit operations, reactor building to torus vacuum breaker valve, 2-1601-20Bl

,g,g, y failed to open. It was then locked closed per T.S.3.7.A.3.b. There were no adverse l

, , safety implications since the redundant 2-1601-20A valve was proven operable. There was  ;

no danger to the public health and safety. Similar occurrences reported on Docket ,

Number 50-249 by R.0. 81-35.

ITIT1 I I 7 8 9 80

• 7ECc " No*O sNSE COMPONENT CoOE SLS o'OE S E 10191 Y $

l S l A l@ Q@ WQ l Vl Al L lV l0 lP l@ l E l@ y @

9 10 11 12 13 18 19 20 SEoutNTIAL OCCURRENCE REPCRT REVIStoN LE R/RO EV ENT YEAR REPORT No. CoOE TYPE NO, O17RE lgl2l lg l0 l2 l l/l ] lt l ll l gl 21 22 23 24 28 27 28 29 20 21 22 EN '2 sed oEPi Nr **NEo" M wouRs ^Ee*wiTT!a# Po"EE e. "s'u"NEU u$u"PAEERER l23 A Q]24Zl@ lss Z l@ Z

@ l 0 l 0 l 0 @llN0l@

2i 41 l lN l@ lNl@ l44V l0 l 9 l S47 l@

40 42 4a CAUSE DESCRIPTION AND CCRRECTIVE ACTICNS l i 1 o l l The 2-1601-20B valve did not open due to a failure of its solenoid valve (Versa No. VCS- l

,,,,;4522). This was replaced and the 2-1601-20B valve was proven operable. Bench testina I g and disassembly of the failed valve showed that its 0-rings had hardened, causing air  ;

,,,,, ; leakage and preventing correct operation. Surveillance test will continue to be per- l

, , y formed as required.

7 s 9 80

% PowSR OTHER STATUS I o RY CISCoVERY CESCRIPT1oM li i s l l E lg l 0l 9 l 9 [gl N/A l W @l4e Routine Surveillance

]e v ag 1g 12 n 44 as cELEASEo oP RELEASE LocATicN o,P RELEASE @

l1168 9l l Z l h d@l 7 10 11 AucuNT N/A cP ACTiviTv 44 l

46

@N/A l l 80 PER$oNNEL EXPOSURE 5 NuM8ER l i j 7 l l 0 l 0 l 0 lhl TYPE Zl @lDESCRIPTloM N/A l PERseNNE'L'iNau2 Es NuM8ER DESCRtPTioN l i l a8 l 9l 0 l 0 l 011l@l12 N/A l 7

80 LOSS cP om OAMAGE To PACTUTv TYPE CESCRiPTtoN l1l9 l l Z lhl N/A l .

PusuSTv 8202250251 820209 NRC USE CNLY issuto c PDR ADOCK 05000237 .

I s l o l l N jhl EscRiPrioN N/A g PDR l llll llll ll [tl; j' 7 3 9 10 68 69 80 3 NAME OF PREPARER e . a en 815-942-2920. X-523 PHCN E:

{

DEVIATION REPORT O Commonwealth Efson PART t l TI TLE OF DEvl ATICN DvR NO. 12 -

STA Rx Building to Torus Vaccum 2

'JN 1 '

82 YEAR 3

NO.

CCURRE0 l

Breaker 2-1601-20B Failure to Open 1-22-82 0935 l 3, y v . .n SY ST E'd AFFECTCD 1600 P( AN T STATUS A1 TIME OF EbENT TESTING Containment yacE Run , pwR m T3 2502 , to,o(MaE) 814 0 orxR r PTicN OF EVENT During DIS-1600-3 (Pressure Supprescion to Rx Bldg. Vacuum Breaker Sur-veillance) valve t.0-2-1601-20B would not open as required. Attempted to operate 2-1601-20B yalve trou control room but valve did not respond. 2-1601-20A valve operated properly.

2-le01-208 valve to be locked closed per Tech. Specitications.

10 CFR50.72 NRC RED PHONE O E r:OTIFICATION VADC YCS NO E ;U I PMEN T F A I LU R E 18280 Oves O NO *0a< accuEST ~0. aESe0NSiPet SuPrRviSO. Bob Heden 9,,g bMW Pai 2 l CPERATING ENGINEER'S CCtNENTS F.lectrical Maintenance replaced the solenoid valve and v.alve A0-2-1601-20B was declared operable at 2030 on 1-22-82 EVENT OF PU BL I C I N TE R E S T O 2 4-H0uR NRC NOTiri CAri ON REO D l

TECH. SPEC. VIOL ATICN TELEPH N/A 6

] NCN REPORTABLE OCCURRENCE TELEGM/TELECOPY WA 14 DAY REPO R TA BL E / t. S. G CN lli DATE TIME R 30 DAY RE80RTABLE/T.S. 6 6 3 2 b CECO CORPOR ATE NOTiriC ATION MADE h ANNUAL /SPECL REPORT RE0'O IF ABOVE NOTIFICATION IS PER 10CFR21 A.I.R. 4 5= DAY ARI TTEN 3E*CQ T RE0'D PER 10CFR21 L.2 R. .82-02/03L-0 TELEPH F. A. Palmer 1-26-82 0803 CECO CORPORATE OFFICER DATE TIME PRELIMINARY REPORT COMPLETED AND REviE*ED John M. Almer 1-25-82 uPERATING ENGINEER DATE i

CCE TE BY STAT ON R v Em u u,a gu O /a kj 1 R L SOL U T I ON APPROVED AND --s -

AUTHORI ZED FOR DI STRI BUTION ,

64*St76 (F04u 15. $ 2. t ) STATION PERI DENT DATE 10 81 I