3 Nuclear Scrams - OYSTER CREEK 1 : FARLEY 2 : MCGUIRE 2

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OYSTER CREEK 1 0% 10/13/00 Startup
EXITING REFUELING OUTAGE -
REACTOR STARTUP IN PROGRESS -
AUTOMATIC REACTOR SCRAM FROM 1%
POWER ON 11/15/00 DUE TO LOW
REACTOR WATER LEVEL DURING
TURBINE MANIPULATION AFTER TWO
TURBINE BYPASS VALVES OPENED
(Refer to event #37525)

FARLEY 2 0% 11/16/00 Hot Standby
AUTOMATIC REACTOR TRIP FROM 100%
POWER ON HIGH STEAM GENERATOR
WATER LEVEL DUE TO MASTER STEAM
GENERATOR FEEDWATER PUMP
CONTROLLER FAILURE AND SLUGGISH
CONTROLS AFTER SWITCHING TO
MANUAL (Refer to event #37527)

MCGUIRE 2 100% Power Operation
TURBINE RUNBACK FROM 100% POWER
AND SUBSEQUENT MANUAL REACTOR
TRIP FROM ABOUT 23% POWER (Refer
to event #37524) - CAUSE LATER
DETERMINED TO BE A PROBLEM WITH
THE BREAKER THAT SUPPLIES POWER
TO THE OVER-POWER AND
OVER-TEMPERATURE RUNBACK RELAYS

-- spider (spider0@usa.net), November 16, 2000


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