ML19253C347

LER 79-025/03L-0:on 791026,during Lcpi Motor Operated Valve Operability Test,Motor Control Breaker Tripped on Thermal Overload.Caused by Tripping Circuit Breaker.Motor Meggared

ML19253C347
Person / Time
Site:	Quad Cities
Issue date:	11/21/1979
From:	Kan S COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19253C337	List: ML19253C336 ML19253C347
References
LER-79-025-03L-04, LER-79-25-3L-4, NUDOCS 7911300610
Download: ML19253C347 (1)

Text

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. c.. LICENSEE EVENT REPORT CONTROL BLOCK: l 1

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lh (PLEASE PRINT OR TYPE ALL REQUIRED INFoRMATloN)

M l 8l 9l L l LICENSEE 7

Q l ACODE l 0 l 2 !@l 0l 0l 0l -l 0 l 0 l 0 -l0 0l0l@l4l1LICENSE 14 15 LICENSE NUMBE R 25 26 l1 l1TYPE, l1l@l JG St C l_l @

68 CON'T O i 7 8

." M l 60Ll@l 4 61 51 0lDOCKET 01 01 NUV8E R 2l 6 I 5 63l@l6311012 I 6 l 7 l 9 l@l 1l REPORT EVENT DATE 14 75 1 l 2lDATE 1 I 7I9l@60 EVENT DESCRIPTION AND PROBABLE CCNSEQUENCES h o 2 While performina the LCPI Motor Operated Valve 00erability Test. orocecure 005 '

gl 1000-3. the 2 C RHR pump suction valve, M0 2-1001-7C, motor control breaker tripped i gl on thermal overload (TS 3.5.B.2). The valve operability test was being performed I o 3 l prior to taking the 2A RHF, service water pump out of service for a preventive l g maintenance outage. The circuit breaker was reset and the valve was successfully l Perated.

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9 10 7 8 11 12 13 18 19 20

. SEQUENTIAL OCCURRENCE REPORT REVISION LE R/RO EVENT YE AR R EPORT NO. CODE TYPE NO.

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_ l21 71 22 9 l---J 23 l012l5l 24 26 l/l 27 l0l3 N 29 30 Ll [--j 38 y

32 K N A ON O PL NT MC HOURS 22 US IT FOR S. SUPPLI MANUF C RER l33 fjgl342 lg l35Z l g l6Z[@

3 37 0 l0 l0 l0 l 40 Wg el p l@ lN l@ lG l0 l8 l0 [Q 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h Fi o l The apparent cause of this occurrance is due to the thermal overload tripping the l gi;3gl circuit breaker. There was no physical damage to the breaker or contactors. The i

, , g valve motor was meggared and the motor currents were measured and found to be l l

normal during valve operations. This valve is normally open and does not have any l g

automatic function.

l 7 8 9 80 STA S  % POWER OTHER STATUS 15 0 R OISCOVERY DESCRIPTION i s E l@ l015 14 l@l NA l lB l@l Routine Test l

/ CTIVITY CO TENT RELE ASED OF RELE ASE AMOUNT OF ACTIVITY LOCATION OF RELEASE ITT1 7 8 9 W @ Iz Ipl 10 NA 44 l l 45 NA I 11 80 PERSONNEL EXPOSURES NUM8ER TYPE DESC996 TlON fTITl l 01010 l@l z l@j ,

NA l PERSONNE L INJURIES NUMBER DESCRIPTION L'_LJ l "A 7 8 9 I I l@l 12 I

11 80 LOSS OF OR DAMAGE TO FACILITY Q TYPE DE SCRIPTION N/

W z [gl NA ldj} pq l

) 8 9 to 80 ISSUED PUBLICITY u 4s t9113004/O NRc usE ONov

• g {hl ESCRIPTION NA l l l l l l l l l l I l l I ;,

7 8 9 to 68 69 60. &

PHONE 3 9 654-2241 ext. 174 f, NAME OF PREPARER

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