Skip to main content

Power Reactor Status Report for May 17, 1999

UNEVALUATED INFORMATION PROVIDED BY THE FACILITY

On this page:

Region 1

Unit Power Down Reason or Comment Change in Report (*) Scrams (#)
Beaver Valley 1 62 HOLDING POWER AT THIS LEVEL TO PERFORM PLANNED MAINTENANCE ON A FEEDWATER PUMP - MAINTENANCE COMPLETE - PLAN TO INCREASE POWER TODAY *
Beaver Valley 2 100
Calvert Cliffs 1 0 1999-05-10 MAINTENANCE OUTAGE *
Calvert Cliffs 2 100
FitzPatrick 100
Ginna 98 OPERATING AT REDUCED LOAD DUE TO DELTA-T SETPOINT ISSUES *
Hope Creek 1 100
Indian Point 2 99 MAXIMUM OPERATING POWER DUE TO STEAM FLOW DEMAND - TURBINE THROTTLE VALVES FULLY OPEN
Indian Point 3 63 HOLDING POWER AT THIS LEVEL DUE TO A HEATER DRAIN TANK PUMP TRIP *
Limerick 1 100
Limerick 2 0 1999-04-16 REFUELING OUTAGE - REACTOR VESSEL HEAD IN PLACE BUT NOT TENSIONED *
Millstone 2 63 INCREASING POWER TO 75% FOR AN NRC HOLD *
Millstone 3 0 1999-05-01 REFUELING OUTAGE - FUEL OFFLOAD SUSPENDED DUE TO PROBLEMS WITH SIGMA MACHINE
Nine Mile Point 1 0 1999-04-11 REFUELING OUTAGE - DEFUELED
Nine Mile Point 2 100
Oyster Creek 100 *
Peach Bottom 2 100
Peach Bottom 3 100
Pilgrim 1 0 1999-05-08 REFUELING OUTAGE - FIRST PHASE OF FUEL SHUFFLE COMPLETE *
Salem 1 100
Salem 2 0 1999-04-03 REFUELING OUTAGE
Seabrook 1 89 INCREASING POWER AFTER EXITING A REFUELING OUTAGE *
Susquehanna 1 100
Susquehanna 2 100
Three Mile Island 1 100
Vermont Yankee 100

Region 2

Unit Power Down Reason or Comment Change in Report (*) Scrams (#)
Browns Ferry 1 0 1985-03-03 DEFUELED
Browns Ferry 2 60 INCREASING POWER AFTER RECOVERING FROM AN AUTOMATIC TURBINE TRIP/REACTOR SCRAM FROM 100% POWER DURING MAIN TURBINE OVERSPEED TESTING ON 05/15/99 (REFER TO EVENT #35720) - CAUSE DETERMINED TO BE A PROBLEM WITH A LINKAGE IN THE TRIP MECHANISM *
Browns Ferry 3 100
Brunswick 1 100
Brunswick 2 0 1999-04-16 REFUELING OUTAGE
Catawba 1 0 1999-04-21 REFUELING OUTAGE
Catawba 2 0 1999-05-03 MAINTENANCE OUTAGE - EXPERIENCING GENERATOR PROBLEMS *
Crystal River 3 100
Farley 1 100
Farley 2 100
Harris 1 100
Hatch 1 97 HOLDING POWER AT THIS LEVEL TO PERFORM POWER UPRATE TESTING
Hatch 2 98 MAXIMUM OPERATING POWER
McGuire 1 100
McGuire 2 100
North Anna 1 100
North Anna 2 100
Oconee 1 100
Oconee 2 100
Oconee 3 50 INCREASING POWER AFTER EXITING A FORCED MAINTENANCE OUTAGE DUE TO LOW REACTOR COOLANT PUMP OIL LEVEL - OUTAGE BEGAN ON 05/15/99 *
Robinson 2 100
Saint Lucie 1 100
Saint Lucie 2 100
Sequoyah 1 100
Sequoyah 2 100
Summer 73 HOLDING POWER AT THIS LEVEL TO PERFORM FLUX MAPPING AFTER EXITING A REFUELING OUTAGE
Surry 1 100
Surry 2 0 1999-04-18 REFUELING OUTAGE
Turkey Point 3 100
Turkey Point 4 100
Vogtle 1 100
Vogtle 2 100
Watts Bar 1 100

Region 3

Unit Power Down Reason or Comment Change in Report (*) Scrams (#)
Braidwood 1 100 LOAD REDUCED TO 15% ON 05/16/99 DUE TO A TECH SPEC REQUIRED SHUTDOWN RESULTING FROM SMALL AIR POCKETS IN THE HIGH AREAS OF THE COMMON RESIDUAL HEAT REMOVAL INJECTION LINES (REFER TO EVENT #35724) - NOTICE OF ENFORCEMENT DISCRETION GRANTED ON 05/16/99 *
Braidwood 2 0 1999-04-23 REFUELING OUTAGE
Byron 1 0 1999-05-13 AUTOMATIC REACTOR TRIP FROM 100% POWER DUE TO AN INADVERTENT POWER RANGE HIGH FLUX SIGNAL DURING SURVEILLANCE TESTING (REFER TO EVENT #35710) - CAUSE DETERMINED TO BE PERSONNEL ERROR *
Byron 2 100
Clinton 0 1999-05-14 REFUELING OUTAGE - MANUAL REACTOR SCRAM FROM 4% POWER DUE TO A LEVEL TRANSIENT ASSOCIATED WITH A FEED REGULATING VALVE MALFUNCTION (REFER TO EVENT #35715) - CAUSE DETERMINED TO BE BINDING ON PART OF VALVE THAT GIVES FEEDBACK TO CONTROL SYSTEM
D.C. Cook 1 0 1997-09-08 MAINTENANCE OUTAGE
D.C. Cook 2 0 1997-09-09 REFUELING OUTAGE
Davis-Besse 100
Dresden 2 100 *
Dresden 3 99 *
Duane Arnold 100
Fermi 2 97 ADMINISTRATIVE POWER LIMIT
Kewaunee 97 POWER LIMITED DUE TO STEAM GENERATOR TUBE PLUGGING
La Salle 1 100
La Salle 2 100
Monticello 0 1999-05-08 MAINTENANCE OUTAGE
Palisades 0 1999-05-07 MAINTENANCE OUTAGE - AT NORMAL OPERATING TEMPERATURE AND PRESSURE *
Perry 1 100
Point Beach 1 0 1999-05-14 MANUAL REACTOR TRIP FROM 100% POWER AND MANUAL SAFETY INJECTION DUE TO A STEAM LEAK ON THE 4B FEEDWATER HEATER STEAM SIDE (REFER TO EVENT #35714) - BREAK REPORTED TO BE 27" LONG AND APPROXIMATELY ½" WIDE
Point Beach 2 30 HOLDING POWER AT THIS LEVEL FOLLOWING INSPECTION OF THE #4 FEEDWATER HEATERS - HEATERS IN SATISFACTORY CONDITION - PLAN TO TAKE UNIT OFF LINE TODAY, RESTORE SECONDARY SYSTEMS, AND RETURN UNIT TO SERVICE *
Prairie Island 1 0 1999-04-16 REFUELING OUTAGE - REACTOR VESSEL HEAD ON AND TENSIONED - PREPARING FOR FILL AND VENT *
Prairie Island 2 100
Quad Cities 1 100
Quad Cities 2 100

Region 4

Unit Power Down Reason or Comment Change in Report (*) Scrams (#)
Arkansas Nuclear 1 100
Arkansas Nuclear 2 100
Callaway 100
Columbia Generating Station 0 1999-04-17 MAINTENANCE OUTAGE
Comanche Peak 1 100
Comanche Peak 2 100
Cooper 100
Diablo Canyon 1 100
Diablo Canyon 2 100
Fort Calhoun 100
Grand Gulf 1 100
Palo Verde 1 100
Palo Verde 2 100
Palo Verde 3 100
River Bend 1 0 1999-04-03 REFUELING OUTAGE - PLAN TO RECOMMENCE FUEL SHUFFLE ON DAY SHIFT *
San Onofre 2 100
San Onofre 3 60 INCREASING POWER AFTER RECOVERING FROM A MANUAL REACTOR TRIP FROM 24% POWER ON 05/15/99 WHEN A FEED REG VALVE FAILED OPEN (REFER TO EVENT #35721) - CAUSE DETERMINED TO BE A FEED REG VALVE POSITIONER PROBLEM (RELAY FAILURE CAUSED #35713 TRIP ON 05/13/99) *
South Texas 1 12 UNIT ON LINE AND INCREASING POWER AFTER RECOVERING FROM AN AUTOMATIC REACTOR FROM 100% POWER DUE TO LOSS OF A REACTOR COOLANT PUMP FROM UNDERVOLTAGE ON AUXILIARY BUS ON 05/16/99 (REFER TO EVENT #35722) - CAUSED BY A BLOWN FUSE IN POTENTIAL TRANSFORMER *
South Texas 2 100
Waterford 3 93 DECREASING TO 90% POWER TO PERFORM WORK ON A MAIN TURBINE GOVERNOR VALVE *
Wolf Creek 1 100

* - Power Reactor Status Report change within past 24 hours
# - Number of reactor scrams or trips within past 24 hours

Notes:
  • Reactor status data collected between 4 a.m. and 8 a.m. each day.
  • All times are based on eastern time.