ML20084F061

Telecopy Ao:On 720203,while Conducting Biweekly Surveillance,Power Range High Flux Set Points Found to Be 110%.Caused by Negative Power Supply Voltage Drifting Out of Spec.Setpoints Realigned

ML20084F061
Person / Time
Site:	Ginna
Issue date:	02/03/1972
From:	Platt C ROCHESTER GAS & ELECTRIC CORP.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20084F052	List: ML20084F049 ML20084F061
References
NUDOCS 8304200029
Download: ML20084F061 (2)

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W vy 41gP EST FEB 3 72 PA205 MA141 M RHA099 ML PDF 1 EMRA ROCHESTER NY 31119A EST JAh!ES P 0'REILLY DIRECTOR REGION 1 DIVISION OF COMPLIANCE USAEC 970 BROAD ST NEWARK NJER THIS IS TO CONFIRM MY CONVERSATION AT 0920 HOURS THIS DATE WITH WALTER BAUNACK OF YOUR OFFICE IN REGARDS TO AN ABNORMAL n

OCCURENCE AT GINNA STATION.

AT 0135 HOURS ON FEBRUARY 31972 THE OPERATORS WERE CONDUCTING y

Jg YtE BI-WEEKLY PT6 3 SURVEILLANCE TEST THE POWER RANGE HIGH OE' FLUX TRIP SET POINTS ON NUCLEAR POUER N-41 VAS FOUND TO BE g

h AT 110 PERCENT.

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THE CHANNEL VAS CHECKED AND THE NEGATIVE POWER SUPPLY VOLTAGE h

mD DRIFTED OUT OF ITS SPECIFICATION. IT WAS REALIGNED TO VITHIN' '

SPECIFICATION AND RETESTED USING PROCEDURE PT6 3 IT WAS FOUND q

m fg 10 BE OPERATING N0ftMALLY 2 0178 mam v

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