ML17266A019

LER 78-044/03L-0 on 781121:motor Operated Valve Mv 07-13 Failed to Open Electrically Following Closure Due to Faulty Torque Switch on Valve Operator.Switch Replaced & Valve Checked

ML17266A019
Person / Time
Site:	Saint Lucie
Issue date:	12/20/1978
From:	Schoppman M FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17206A588	List: ML17206A587 ML17266A019
References
LER-78-044-03L, LER-78-44-3L, NUDOCS 7901030130
Download: ML17266A019 (1)

Text

NRC FOAM 366 U S. NUCLEAR RECULATORY cOAIullssION i7.77)

LiCENSEE EVENT REI"ORT 4

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Jc CVCIV i OESCRIPTIGIV 1NOPRC84SLECO IS-QU NICKS Go During routine. surveillance testing, motor operated valve JV 07-1B failed

~03 to open e 1 ec trica 1 ly fo 1 1 owing c 1 osure . The valve was opened manua ll and 1B Emergency Core Cooling System (ECCS) train was placed out of service. Action was taken in accordance with T.S. 3 5.2C and HV 07-lB was repaired and operationally checked, satisfactorily. The 1B ECCS l

~07 train was returred to service af ter a roximatel 38 hours4.398148e-4 days <br />0.0106 hours <br />6.283069e-5 weeks <br />1.4459e-5 months <br />. This is the t

~QR second occurrence of this type. (See LER 335-77-34) a 9 Croak 7

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CAUSc OESCRIpTiOI'I 1:IO CORRSCi IV= ~~iONS QZi The cause of the 11 SI4UT

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ROURS QZZ 17 40 1T ACIzuIK!Ir SlzSwTT=Q EQ LJQ LjQ 4I 07-lB malfunction was due to a faulty torque'switch

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)zILUK CCYP, SL))L,KR 45 44 CQUz)CIjl 9!IT uIAuUSA 49 4i on the valve o erator. The tor ue switch was re laced and MV 07-lB was t o erat<orallv checked satis acto il 9

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