ML20058K796

Ro:On 740712,RHR Svc Water Pump 11 Failed to Start During Routine Operation.Pump Motor Breaker Replaced.Pump Demonstrated Operable.Cause of Breaker Malfunction Being Investigated

ML20058K796
Person / Time
Site:	Monticello
Issue date:	07/15/1974
From:	Larson C NORTHERN STATES POWER CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NUDOCS 9102140408
Download: ML20058K796 (1)

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, 'Naotice12.o. 84-ota 55362 d / 4- ~ ~ '. July 15, ~;2S74 Mr..J. :G. 7.eppler, Regional. Director 1 Cirectorate.cf Regahtarf Operatirms Regton:1II ], clinited States Atomic.B=gf r'nmissian -~ 799 Foeseyeit.Ibcd GlenIB11yn, 111i2:ois -5107.3 I' I

Dear'Mr. Teppler:

s .-KNTIfTrlO t"dCLEAR GBERATING --PI).NT - jl. ~ tbcket No. 50-263 License 2;o. TE'R-22 i ~ ~~ 'Bailurn of the fJo.11.M Service Water Pump >to. Start Qn July 12 1974, 4.uring routine operation.of the RHR : Service' Water _syste:q for ~ items. cooling, -the_'hb. '11.MfR.Si purp failed :to star.t. The pu=p rotor bFecker ws Topi with Espare -and the.pu::rp was ~ demonstrated. operable..Ihe.redt uhnt pu=pi ithe 5%" loop and the_pxnps 'in-the MMAmt *B". loop were also 'de:nonstmted,to.be

p-=ble. %n inNfigatian-to

P.etermine the t use of'the breaker r.sifunction is s

~ in y wgress. 5 I, 'Neurs. yerrf.tmiy -i b'b M 3

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!I 71 ant'thnager i di GL/rzm ii ] .x:c: J F Ohsry, Sirectoraterof Licensing 4.:C 4Inoff j 'Minnt.sota Polintion Control Agancy umunu jl T-EiEe -{ .Tapies sent~by.teleccd5ier to:L.wler 2nd D!Learf '] 910214040s 74o735 CF ADOCK 05000263 .j CF ? //.~01 y!.. ...:. a................e....... ._...:....,..,..:.,..w,. .}}