ML20009E437

RO 81-33:on 810709,after Start of Shaft Driven Feedwater Pump,Injection of High Conductivity Water in Dead Leg Caused Reactor Water Conductivity & Chloride Excursion.Caused by Incomplete Flush of Feedwater Sys

ML20009E437
Person / Time
Site:	Nine Mile Point
Issue date:	07/10/1981
From:	Leach E NIAGARA MOHAWK POWER CORP.
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
RO-81-33, NUDOCS 8107280207
Download: ML20009E437 (1)

Text

. . TELECO?Y MEESAGE J0-30 h*

TO: 215-337-532s FRCM: 315-342-5523 CATE/ TIME 7/10/81 ]340 Telepncne tic cer Telepncne tiumoer TO: BOYCE H. GRIER Frc=: liiagara Mchawk Power Corporati,on Director of Regulatory Operation fline Mile Point tiuclear Station UStiRC P.egion I Unit il c31 Park Avenue P.O. Box !3E King of Prussia, PA. 19405 Lyccming, tiew York 13093

SUBJECT:

PRCMPT REPORTASLE OCCURRE? ICE CCCKET i.0. EO-2E0 LICE:iSE ti0. DPR-63 ASSIGiED LER ??O. oi_n

.EVEfiT.DATE: n oia, REPORT DATE: 7/in/91 EVENT DESCR~P"IO.'l:

While operating at approximately 290 MWE, the shaft driven feedwater pump .

was started. Injection of high conductivity water in the dead leg caused a reactor water conductivity and chloride excursion. Conductivity exc eded 10 (J!H0/01 (15.5 J!H0/CM peak) for less than 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> and chlorida G e ~ ppm (1.4 ppm peak) for less than four hours. 4 /

CCMPO:!ENTS ItiVOLVED: .

Reactor Vessel - -

's g

CAUSE' A?iD REMEDIAL ACTIO : C 2 IISBN -~~I Event was caused by incomplete flush of feedwater system h 6 DanD '

-. startup.

Remedial action.was accomplished through normal reactor'wa V lean-up, i ,/

s-Jstem operation.

FACILITY STATUS:  % THERMAL E',l 57%

c) Routine Startup g) Shutdcwn d) Rcutine Shutccwn h) Refueling e) Steady State Oper ^

i) Other f) Load Change j) tiot Applicacie -

I _

A written follow-up report will be sent within two weeks.

r t

TELECOPY TO B. Grier FROM Edward Leach DATE 7/10/81 ilAME fiAME 4

8107280207 810710 - l DR ADOCK 05000220 -f PDR Se

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