05000335/LER-1978-044-03, /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

/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: 05000335/LER-1978-044, Forwards LER 78-044/03L-0 05000335/LER-1978-044-03, /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
References
LER-78-044-03L, LER-78-44-3L, NUDOCS 7901030130
Download: ML17266A019 (1)

LER-1978-044, /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

Event date:
Report date:
3351978044R03 - NRC Website

text

NRC FOAM 366 i7.77)

LiCENSEE EVENT REI"ORT U S. NUCLEAR RECULATORYcOAIullssION 4

~o 7

CON'T

~o 7

'Q I

FIL S

LI SlllQz Olo "lolol ol Ol Ol lol O'Qzl lllllllLIQ~~IQz LICcR546 C GK, LICKVSKR4AISKR 15 5 '

icauSK TV)4 J0, Si CAi Q

"::;;.LLQ I

I I

I I.'Q~I'Q>>l I

I I

Q 60 41 CCIIKT'IUIVSKR 3a 49 4')KN ~ Q*r-75 RK) RTO*TK Jc CVCIVi OESCRIPTIGIV 1NOPRC84SLECO IS-QU NICKS Go During routine. surveillance testing, motor operated valve JV 07-1B failed

~03 to open e1ec trica1ly fo11owing c1osure.

The valve was opened manuall 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 after 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) 7 a

9 STSTc iI C*US9

~

C'S K CQAII4.

iiALy4 Cooc OK SUSCCOc CCAI)C!IKRTCQQK

'USCQQc SLS 304

~SE Q"

~EQlz

~AQIZ ZI I AIL III 0 IE Q'-

~AQiz

~Z QI; 7

8 9

= 0 II l1

.1$

I9 5 OUSEITI*L OCCUR44.ICLK RK)CRT

~

RKVISIQV 1I

'71 11 1$

17 ACTICN NUTURK KFNKCT SI4UT 0-iR 1T ACIzuIK!Ir 'czlox

)zILUKCCYP, CQUz)CIjl9!IT T*ICKV ACTIO'I 0'i >LAN u'K14'JQ ROURS QZZ SlzSwTT=Q FCR,I 4US.

SL))L,KR uIAuUSA Croak 4 9 QLJI4-I* Q LILz ~l EQ LJQ LjQ JJ Jc

~

5 Wi Ji 40 4I 45 44 4i CAUSc OESCRIpTiOI'I 1:IO CORRSCi IV=~~iONS QZi The cause of the

~AIV 07-lB malfunction was due to a faulty torque'switch 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

FACILI Y 5 ~ ATUS

'I )CWKzI

~z Elm ~LI 0 OQ a

IC I

IJ ACTIVITY CC:ITKVI' 4LKASco OS P4 I-5 ASiK

~ZQ3

)Z tQI 7

3 9

lc II PKRSQNNK'C)i 5UIIKS t:

I z I ~Ol 0 I 0 Il Z l.:..\\

NA 3

9 II

~

)KR5Ctiiicl ziii'LAi45 Vz z)SKR QKS RI4TICV Lo lo lloo ll~zl NA OTIIKRSTATUS Q NA 30 AVOURTQP ACTIVITYQJS NA LOCATIC'IOF RKLKASKQ34 44 45 30 II li LCSS QF CR QAVAC..Q SACILITYQ3 rvlzK 3 3CRI)IIC ~

QZQ42 7

Ic

)USLICI Y

'55U40 0 SCRI)aCHS LN IQ44 i

'.0 a

3" NA V'80%03 6.(>o 3)

NRC USE OEILY I

NA

'I i) 7 3

Sa KC I(

07 0

552 3802 1f. A. Scho man AIPiilC9 CP QISCCu KRV

)

OISCQVKRVOKSCRi)T:CV QSZ

~B Q

, Surveillance Test 43 4$