ML20058K787

Ro:On 740527,while Performing Routine RHR Sys Surveillance Test,Loop 12 Torus Cooling Injection Valve Breaker Tripped on Overload When Attempting to Close Valve.Investigation Continuing

ML20058K787
Person / Time
Site:	Monticello
Issue date:	05/28/1974
From:	Larson C NORTHERN STATES POWER CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NUDOCS 9102140389
Download: ML20058K787 (1)

Text

.

h.

~

~

pr o R T M E ft N STATES P O Y/~ E R COMPANY Nonticeno, Mirmesota 55362 Pey 28, 1974 i

I Ffr. J. G. Kcpyler, Regional Director Directorate of Regulatory Operaticas Regio:t III United States. Atenic Liergy Comission 799 Ecosevelt Re:d Glcn-Ellyn, Illir.cis 61073

Dear !Jr. Ecppler:

MIEICFLTD FUCLFJJ1 GEL"IRATING PLET Docket IJo. 50-263~ License Ib. DPR-22' Ntile perforning, a routihe EHR Systen surveincnce test on !?g 27,_1974, Loup 12 torus ccoling injectica valve CrT) 200D) brenier trinp:d' cn cveric~1 when attc pting to close.the valve.

'Tus valve was closed' foncuing cc=pletion cf the surveillance test.

kn investistica into.the ccuse of the prebics is centinuing, Yours very tn;17,.

1/

C. E.. Inrh.

~

PI:mt 1*,2 nager CEL/ L :

cc:. J: F:Ohary,. Directorate-of ~ Licensing.

G. c1urrn=ff Mirmesota Ponutien-Centrol' Agency Attn:: E:A Pry = ira.

2001 Ccpics: sent bv telecenihr-to I~.c---Ir end. O' Leary-i i

i 9102140389 740528 CF ADDCK 05000263 CF

-