ML20127H495

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Provides Summary of Util Present Situation at Plant,In Response to Re Faulty Overcurrent Breakers in Engineered Safety Sys
ML20127H495
Person / Time
Site: Monticello 
Issue date: 03/15/1973
From: Wachter L
NORTHERN STATES POWER CO.
To: Grier B
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
IEB-73-01, IEB-73-1, NUDOCS 9211180526
Download: ML20127H495 (1)


Text

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NORTHERN STATES POWER C0MPANY MIN N C A >O Li e, MIN N c eOTA 95401 March 15, 1973 i

Mr. Boyce !!. Grier, Regional Director U.S. Atomic Energy Commission Directorate of Regulatory Operations, Hegion III 799 Roocevelt Road Glen Ellyn, Illinois 60137

Dear Mr. Grier:

MONTICELLO NUCLEAR GIERATDiG PLANT AEC Docket No. 50-263 7 *eeponce to your 1ctter of February 28, 1973, concerning faulty over-

.ent breakers in Engineered Safety Systems, the followinc eummarizee i

our precent situation at Monticello, i

There are no circuit breakers of the make and model as dercribed in the Directorate of Regulatory Operatione Bulletin No. 73-1 installed at Monticello. We have also determined that there.are precently no plane for future inetallation of the type of circuit breaker in question.

l We have experienced no faulty operation of the overcurrent trip devices i

utilized on the circuit breakers in our Engineered Safety Dyetems and our electrical maintenance program periodically ensuree the proper opera-l tion and cet pointe of these circuit breakere.

Yourc very truly, L J wachter, Vice President Power Production & System Operation LTW/dm cc: D E Nelson 0 Charnoff Minnesota Pollution Control Agency, - Attn K. Dzugan l

1 9211180526 730315 PDR. ADOCK 05000263 i

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