05000237/LER-1978-051-03, /03X-1 on 780907:during Surveillance Test Dis 1600-11,valve 2-1601-24 Failed to Operate in Specified Time Limit.Caused by Foreign Matter Lodged in Solenoid Operated 4 Way Valve,Preventing Proper Bleed Off

/03X-1 on 780907:during Surveillance Test Dis 1600-11,valve 2-1601-24 Failed to Operate in Specified Time Limit.Caused by Foreign Matter Lodged in Solenoid Operated 4 Way Valve,Preventing Proper Bleed Off

ML20027A393
Person / Time
Site:	Dresden
Issue date:	10/17/1978
From:	Cieszkiewicz S COMMONWEALTH EDISON CO.
To:
Shared Package
ML17173A380	List: 05000237/LER-1978-051, Forwards LER 78-051/03X-1 05000237/LER-1978-051-03, /03X-1 on 780907:during Surveillance Test Dis 1600-11,valve 2-1601-24 Failed to Operate in Specified Time Limit.Caused by Foreign Matter Lodged in Solenoid Operated 4 Way Valve,Preventing Proper Bleed Off
References
LER-78-051-03X, LER-78-51-3X, NUDOCS 7811240211
Download: ML20027A393 (1)

LER-1978-051, /03X-1 on 780907:during Surveillance Test Dis 1600-11,valve 2-1601-24 Failed to Operate in Specified Time Limit.Caused by Foreign Matter Lodged in Solenoid Operated 4 Way Valve,Preventing Proper Bleed Off

Event date:
Report date:
2371978051R03 - NRC Website

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UPDATE REPORT - PREVIOUS LICENSEE EVENT REPORT REPORT DATE:

10-02-78 l

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d 60 61 DOCKET NUMegR 6d 69 EVENT D ATE 74 75 REPQRT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h o I :: l l While performing surv. DIS 1600-11 (Press. Suppression Air Oper. Viv. press sw. setotj l

o i3; l ck.) valve 2-1601-24 failed to operate in the specified time limit required by T.S.

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o i41 l 427.D.1.a, Table 3.7.1.

Safety significance mininal because redundant (inboard) iso-l t

o isi I lation valve was operable and would have provided containment integrity within spec-l 0 i6 l l ified times as required. This is the first occurrence of this type at Dresden.

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CODE TYPE N O.

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33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTICNS h i 10 l l Probable cause-foreign matter lodced in solenoid coerated 4 wav valve' the7ehv nre-l ~

9ilillvhntingproperbleedoff.

Subsequent testing and external inspection revealed no I

g l l abnormalities. With exception to the initial valve operation all subsequent operationsl I

,;3g l were well within the specified times setforth in the Tech. Specs. Because of the l*

l singular nature of the event no further actions are' deemed necessary.

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% POWER OTHER STATUS 15 0 RY DISCOVERY OESCRIPTION l 5 l [E_j@ l 0 l 9 I 5 lhl NA l

l,J,jhl Surveillance Testine i1 ACTIVITY CO TENT r.ELEASED OF RELE ASE AMOUNT OF ACTIVITY LOCATION OF RELE ASE NA l

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NUMBER NA 7 8112 4 0 'L O l

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