05000249/LER-1980-028-03, /03L-0:on 800718,during Setpoint Surveillance, Solenoid Valve for Torus to Reactor Bldg Vacuum Breaker 3-1601-20A Determined Inoperative,Preventing Valve from Opening.Caused by Mechanical Failure.Valve Replaced

From kanterella
(Redirected from ML19344A444)
Jump to navigation Jump to search
/03L-0:on 800718,during Setpoint Surveillance, Solenoid Valve for Torus to Reactor Bldg Vacuum Breaker 3-1601-20A Determined Inoperative,Preventing Valve from Opening.Caused by Mechanical Failure.Valve Replaced
ML19344A444
Person / Time
Site: Dresden Constellation icon.png
Issue date: 08/14/1980
From:
COMMONWEALTH EDISON CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17192A889 List:
References
LER-80-028-03L-01, LER-80-28-3L-1, NUDOCS 8008200322
Download: ML19344A444 (1)


LER-1980-028, /03L-0:on 800718,during Setpoint Surveillance, Solenoid Valve for Torus to Reactor Bldg Vacuum Breaker 3-1601-20A Determined Inoperative,Preventing Valve from Opening.Caused by Mechanical Failure.Valve Replaced
Event date:
Report date:
2491980028R03 - NRC Website

text

__ -.

~

'WC PCHM 064 ~ ~ ^ ~~

U. S. NUCL5AR REGULATCAY CCMMISSICN

' M /l LICENSEE EVENT REPORT CCNTRCL SLOCX: l l

l l

l l

(PLEASE PRINT CR TYPE ALL REculRED INPCRMATICN) l.3 l 3 l lI l Ll D l R l S l 3 lgls0 l 0 i - l 0 l 0 l 0 l 0 l0 l-l0 l0 Igl4l1l1l1l1[glsrarse@

l l

7 a 3 uCessEE C ct i4 uCENsE Nbusta a

2a ucENsE Tvet ;o CCN'T l0!ti

[,"e[ l L @l O i 5l0l0l0l2l419 gl0[7 l1 18 18 10 !@l 0 l 3 i l l a 1810 j@

~

7 4

60 61 OoCKET NLMSER 64 69 EVENT DATE 74 is AEPORT 3 ATE 40 EVENT CESCRIPTICN AND PRCBA8LE CCNSECUENCES h l o ! 21 lDuring normal operation while performing set point surveillance, solenoid valve for

[

i

,,3j georus to Reactor Building vacuum breaker 3-1601-20A was determined to be inoperative, l

., a,, j ; preventing the valve from opening. This event is of mini =al safety significance l

lia, g ; gsince redundant valve 3-1601-203 was immediately tested and proven operable (T.S. 3.7. A. l

!,a g i ;3.b).

This is the first event of this nature.

ll 0 i 7 l l l

I ji a ii! I 30 i7 8 9 SYSTEM

CAUSE

CALSE COMP.

VALV E C ct CecE suscocE COMPCN ENT CODE SUICCCE SUSCOCE ll o-l 9 l' lS lA lh l E lh l3 l@ lV lAlLlVl0l?l@ lEl@ lzl@

7 3

3 10 11 12 13 18 13 20 SECUENTIAL CCOUARENCE AEPCRT 8EVISION gaf ag EVENT VEA A REPCRT No.

COCE Tvpt N

@ ;(Eg l210 l0 l l_l l0 l2 l8 l jfl l0 l3 [

lLj l_l l

.l 22 23 24 26 27 28 23 30 31 32 ACTtCN suTumE EpsEC*

$MUTOCWN ATTACNMENT NPMCJ 741ME COMP.

COMPCNENT TAKEN ACTt CN CN PLANT METHCO MCURS SUSMmED PCMM WS.

SU P*LI E9 iAANUFACTURER Ic !gl: z lg lsz ig l:szj@

l0 10 l0 l l

l N l@

l Y lg l N I@

lV l0 l9 15 l@

22 4

a si 40 si 42 42 44 47 CAUSE CESCRIPTICN AND CCARECTivE ACTCNC h llijallThe cause of this event is attributed to the mechanical failure of the solenoid valve.

l r

(The entire solenoid valve was replaced and the vacuum breaker tested satisfactor11v.

l li;t i lNo further corrective action deemed necessary.

l

,7, I'}3l l I

llitai l 30 i7 3 3 l

ST A 47CWER QTHER$TATUS Cl RY OISCCVERY 0E3CRIP9CN Ii ! 5 l l E lg l 0 l 9 l 6 lgl N/A l

[3(gl Surveillance DIS 1600-3 l

7 3 3 t

12 11 44 45 de 90

  • Wt. EASED Op aELEA3E AMCUNT OF AC 1VITY LOCAT!CN Cp mELEASE i2 ! s 1 l E f @ l z !@l N/A I

I N/A I

F 4 %/

10 f1 44 45 to

  • tR$CNNET. EN9C$1JR E5 OESCRI8SCN
  • v*E @l NUM8E4 d

N/A I

12 i l 101010 l@l 30

  • EuSCNNE N;LpiES 41 I

NUMSE4 OE3C3189CN ll1 { ; } l 010 l0 [gl

'J/A l

'g

,7 3 3 11 12 LOSS CP OR OAMACE TO 54CluTV

  • v*E 3ESCmsTtCN

!b l..._

h I3l 30 l7 4 3 to

  • tSLiCITY

^

NRC uss CutY iss

EsCain,C.NQ.5) 80082003.2.2 lI:13I I qE3!6l N/A i

i i iiriiriiiiI!'

68 $9

30. ;

U