05000272/LER-1979-055-01, /01T-0:on 790830,under Certain Accident Conditions,Valve Actuators May Have Insufficient Power to Torque Closed Valves from Fully Open Position.After Evaluation,Cause & Corrective Action Will Be Sent

/01T-0:on 790830,under Certain Accident Conditions,Valve Actuators May Have Insufficient Power to Torque Closed Valves from Fully Open Position.After Evaluation,Cause & Corrective Action Will Be Sent

ML19208A957
Person / Time
Site:	Salem
Issue date:	09/13/1979
From:	Kapple A Public Service Enterprise Group
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19208A954	List: 05000272/LER-1979-055, Forwards LER 79-055/01T-0 05000272/LER-1979-055-01, /01T-0:on 790830,under Certain Accident Conditions,Valve Actuators May Have Insufficient Power to Torque Closed Valves from Fully Open Position.After Evaluation,Cause & Corrective Action Will Be Sent
References
LER-79-055-01T, LER-79-55-1T, NUDOCS 7909180350
Download: ML19208A957 (2)

LER-1979-055, /01T-0:on 790830,under Certain Accident Conditions,Valve Actuators May Have Insufficient Power to Torque Closed Valves from Fully Open Position.After Evaluation,Cause & Corrective Action Will Be Sent

Event date:
Report date:
2721979055R01 - NRC Website

text

U. S. NUCLEAR REGULATURY COMMISSION NRC POR 366 '

(7-77)

UCENSEE EVENT REPORT CCNTRCL BLOCK: l l

1

}

l I Ih (PLEASE PRINT OR TYPE ALL REQUIREO INFORMATIONI i

6 N b I s i c i s l i l@l 0101 10101010101 10101@l4111111111@l Ar sa @

l l

o i

7 a s uCENSEE 000E i4

s uCENsE NuuSER

5

6 L. CENSE Tvet Ja 57 of1

"," I L @l 015 l 0101 dl 21712 @l 0 I 81310 l 7 19 @l019 l 1 13 I 7 I 9I@

CON'T 7

s sa 61 OCCxgTNyusta sa es EvtNT OATg 74 75 mEacaT OATg so C ; CE EVENT CESCRIPTION AND PRC8 ABLE CONSECUENCES h to a NRC cuestion concerninc operation of containment ventilation

(

o 2 l In resonnsa 10 l

a review of the creratinc characteristics of the valves in the 0I3 I isolation valves, eenetration lines showed that under certain accident l

ci4 l tach =ad 36 inch containment 0 5 l ccaditier.s the valve actuators may have insufficient torcue to fully close the l

0 16 l valves frcm the fully oren cosition. This is the first occurrence of this tvre.

l 017 l

1 0t9 I

40 7

8 9 C0ve vA LV E Sv5TE M

CAUSE

CALSE COCE C00E SUSCOCE 00VPCNENT C00E SU8C00E Su8000E is l DI@ l XI@ Ej@ lv I AIL I vio i Pih l Dj@ l Zlh aisi 7

a a

to is 12 12 ts is 2a SEOU ENTI AL OCOURAENCE RE80RT mEvts:0N (NENTV!aA A E90RT NC.

COCE TYPE NC.

@ y* c a e0 I7 I 9l l-l l0 151 Si 1/1 101 I

I Tl I-I L2.J

_:1

2

4

s 27

s 23

a si ACTION ryTyng ErsEOT SwuTOCWN AT*ACwvtNT NPA N mRIME COMP 00V80NENT TAxEN ACT:0N CN 8LANT VETwCC

• CUA5

$6BvlT*E3 80 AM W8.

SU P'U E a VANUKACTLa!Q 2 @

l 0l0 l 0l 4 l Yl@

l N lQ lL l@

l X l 919 I 9l@

]XlglaX I g jZ g l,6 4,

40 42 42 4s 44 47 as

.2 CAUSE CESCRIPTICN AND CORRECTIVE ACTICNS h Io l This ccourrence is under investication by the Encineerina Department. When the J

i ii i evaluation is ccmplete, the cause, corrective action and safety analysis will be j submitted in a supplemental report.

I: ! l I

l i

4 80 7

4 a VErWOD OF paciu N STATLS

%*CWEA OTwEn 5?A T'.;5 C1500NEAY DISCOVERY OE50P'Ut0N l G l@ l 010 l0l@l N/A I

lD lhl NEC Ouestion l

1 Is 80 ACTivtTY CO TENT

1. ELEASEO OpagLEASE AVOUNT 05 AC?iviTV LCCATION CF PELE Asi Zlh l

N/A l

N/A l

1 6

7 8 9 13 D

44 45 y

ege5CNNEL EXP0scaES NLveEm TvrE O ESC RIPT!O N W l

lQlQlQ l2l l

N/A 1

7 y~

e e n

t:

is

1. gascNNg.gyAiES NyvgEm OESOpipnON l

l0l0l0l@l N/A 4

3:

7 s a o

i2 LO:s Os On 0*vACE TO r20:uTv g)v-D N-- 8 l

TV'E O E 50m **10N a

t l9 l 2l g/A

. 3

'# C 'S E 3 ' '

O Es:n,*T.CN @

• %BuC:'y iS3;EO W hl N/A II II III t l l t I I o

63 e,

e 7

a a ic Kapph f 6C91365-7CC0 Sak. De

• • CNE NAME OF 8EEP APE A

~7Q