ML19308B228

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PNO-III-79-39:on 791115,reactor Tripped.Caused by Failure of Feedwater Pump 12 Supplying Water to Steam Generators. Pump 11 Was Shipped to Vendor for Rewinding Due to Similar Failure.Reactor in Process of Cold Shutdown
ML19308B228
Person / Time
Site: Prairie Island Xcel Energy icon.png
Issue date: 11/15/1979
From: Heishman R, Warnick R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:
References
PNO-III-79-039, PNO-III-79-39, NUDOCS 7912170423
Download: ML19308B228 (1)


Text

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PREI,IMINARY NOTIFICATION Date:

Noyember 15, 1979 F?.". LIM!NA':Y NDTIFICATION OF EVENT 03 UN SUAL OCCURRENCE--PNG-III-79-39 Thi: i::li=ie ry rotification co:stitutes E!_.LT cotice of events of POSSISLI rsiety er pu'.: lie i=terest sireificance.

n: infor=stion eresented is a:

1:iti:ll received without verifiestien er ev:1uation end is basically all

-.: it h:cvn by IE staff on th.is date.

Fa: flit /:

Northern States Power C09:2ny (Prairie Island Unit 1)

Decke-No. 50-282 Red Wir;, Minnesota S. ;.* a : t :

REA TCR T:. P CAUSE') SY FAI:.U:.E OF FEEDWATER FUMP F4CTOR R:cien II-as cotified at 10:05 a.r. en November 15, 1979, by a telephone

'.. ta::' thz rea' dent in:pector, that l' nit'1 reac:ce tripped due to failure cd :ne ':. '2 f eedwster pump su:clying ster to the stes generators.

L-i

  • .ns :cerat'n: at scproxi at e'.

64% power at the time of the event,

<.r c e tedw2:er cume, as t ne N:.11 eed ater :;==.9ac exper'enced a

' '.;- f a !'.ur e Oc t.svembe r 5,103.

The f.o.11 g,u.-c motor had been s-u -: o :1e v;-r.dce facili y "Or ret inding, and is schedulee to be re:.r L z c:.:: ?.3. e.ce - 30.

.-i- ;.Ss eret n; at a.9roxicat el< 47:; ec.er at the time of tne event ac w s; ana f f ected ty t.'s evert.

Tre '.f:t7see is in re:ess of ol!cir.3 the reac cr in cold shutcoun in tr+:trs-len f o rectsc erent of the feedkater pump.

As delivery of a motor

an :: :e exce::ed s::n, the cuts e :an be excecte: to last at t.se m' D

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aa T96 * :+n se+ is cla.nir; to nake & ; ess release.

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g..'::.g:.e-15,197Y.of t his ms:te r by :he resident R*II.s notified inspector a: 10:05 a.m. CST

'C D..:e iere bent.i,:lesicen t Inspector, 612/338-5209 cir )

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.l. J. Fouchard, PA R. J. Mattsoc, NRR Lando'e (6 min /pagc)

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