ML20023B827

LER 83-024/03L-0:on 830403,while Performing Core Spray Operability Test,Valve Mo 1402-4A Failed to Open.Caused by Burned Out Motor.Motor Replaced

ML20023B827
Person / Time
Site:	Dresden
Issue date:	04/26/1983
From:	Anandappa A COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20023B822	List: ML20023B821 ML20023B827
References
LER-83-024-03L-01, LER-83-24-3L-1, NUDOCS 8305060422
Download: ML20023B827 (2)

Text

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l0 l0 l0 l2 l 31764 @l63 014EVENT ET NLMB ER l 01318131@l QATE 74 75 014l AESCRT216lOATE 8131@ $0 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h 10121 l During refueling outage while performine Core Sorav Operability Test. test l pl valve MO 1402-4A failed to open. After several attempts to open the valve. the I

[ O I 41 l thermal overload contacts tripped. There was no effect to nublic henith nnd l 10l5l l safety. This event is of minimal safety sienificance since the valve is not  !

Nn nner n restrenn ro c vnnnvend I 10 l6 l l reauired for safety injectinn.

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33 34 3 36 37 40 42 43 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l3[Oj l The cause of the event was due to a burned out motor. (Limitorque type - P). A ,

[TTTl I ground, due to a breakdown in the insulation probably caused it. It was replaced [

ii i2i l with a like for like; the valve was satisfactorily cycled 3 times to verify l

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$A S  % POWER OTHERSTATUS is O GY OISCOVERY OESCRIPTION Surveillance Testing

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DVR NO. 12 2 - 83 54 STA UNIT YEAR NO.

PART tl TITLE OF DEVI ATION OCCURRED 4-3-83 1400 Core Spray Test Valve Fail to Open DUE W SYSTEM AFFECTED 14UU PLANT STATUS AT TIME OF EVENT TESTING Core Spray MODE Re ftiel . PwR(MWT) 0 . LOAD (MWE) 0 ygg Ng DESCRIPTION OF EVENT ,

4A on "A" core sprav system failed to open from the control room. After several open signals were given, it tripped thermally. Test was completed satisfactor ily by operating the valve manually. Valve is not required for safety injection.

10 CFR50.72 NRC REQ PHONE @

NOTIFICATION MADE YES NO EQUIPMENT FAILURE 26935 QYES NO WORK REQUEST NO. RESPONSIBLE SUPERvlSOR Thomas Mohr DaTE 4-4-83 P ART 2 l 0PERATING ENGINEER'S COMMENTS Valve was repaired.

w EVENT OF PUBL IC INTEREST 24-HOUR NRC NOTIFICATION REO'O TECH. SPEC. VIOLATION TELEPH N/A REGION til DATE flME NON REPORTABLE OCCURRENCE TELEGM/TELECOPY N/A O 14 DAY REPORTABLE /T.S. REGION lli DATE TIME 30 D AY REPORTABLE /T.S. b

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, CECO CORPORATE OFFICER DATE TIME PRELIMINARY REPORT J.M. Almer COMPLETED AND REVIE*ED OPERATit.G ENGINEER [/8/83 f , O ATE I f

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$6 5176 (FORM 15 52-11 10-81 STATION SPE i .ENDENT' DdTE