Power Reactor Status Report for April 30, 2011

UNEVALUATED INFORMATION PROVIDED BY THE FACILITY

On this page:

• Region 1 Reactors
• Region 2 Reactors
• Region 3 Reactors
• Region 4 Reactors

Region 1

Unit	Power	Down	Reason or Comment	Change in report (*)	Number of Scrams (#)
Beaver Valley 1	100
Beaver Valley 2	100
Calvert Cliffs 1	100		HIGH SYSTEM VOLTAGE ALERT
Calvert Cliffs 2	100		HIGH SYSTEM VOLTAGE ALERT
FitzPatrick	75		LOWERING POWER TO 55% TO PLUG A WATER BOX TUBE	*
Ginna	0	04/23/2011	REFUELING OUTAGE
Hope Creek 1	100		HIGH SYSTEM VOLTAGE ALERT
Indian Point 2	100
Indian Point 3	100
Limerick 1	100
Limerick 2	100
Millstone 2	0	04/02/2011	EXITING REFUELING OUTAGE	*
Millstone 3	100
Nine Mile Point 1	80		INCREASING POWER	*
Nine Mile Point 2	100
Oyster Creek	50		SHUTTING DOWN FOR A MAINTENANCE OUTAGE	*
Peach Bottom 2	100
Peach Bottom 3	62		ROD SEQUENCE EXCHANGE - WATER BOX CLEANING - FEED PUMP MAINTENANCE	*
Pilgrim 1	0	04/17/2011	REFUELING OUTAGE	*
Salem 1	96		INCREASING POWER - HIGH VOLTAGE ACTION WARNING	*
Salem 2	0	04/09/2011	REFUELING OUTAGE - HIGH VOLTAGE ACTION WARNING	*
Seabrook 1	0	03/31/2011	EXITING REFUELING OUTAGE
Susquehanna 1	98		100% ELECTRICAL CAPABILITY - HIGH SYSTEM VOLTAGE ACTION	*
Susquehanna 2	0	04/04/2011	REFUELING OUTAGE - HIGH SYSTEM VOLTAGE ACTION
Three Mile Island 1	100
Vermont Yankee	100

Region 2

Unit	Power	Down	Reason or Comment	Change in report (*)	Number of Scrams (#)
Browns Ferry 1	0	04/27/2011	REACTOR SCRAM DUE TO LOSS OF OFFSITE POWER - SEE EN #46793 500 KV OFFSITE LINES OOS
Browns Ferry 2	0	04/27/2011	REACTOR SCRAM DUE TO LOSS OF OFFSITE POWER - SEE EN #46793 500 KV OFFSITE LINES OOS
Browns Ferry 3	0	04/27/2011	REACTOR SCRAM DUE TO LOSS OF OFFSITE POWER - SEE EN #46793 500 KV OFFSITE LINES OOS
Brunswick 1	100
Brunswick 2	100
Catawba 1	0	04/23/2011	REFUELING OUTAGE
Catawba 2	100
Crystal River 3	0	09/25/2009	MAINTENANCE OUTAGE - CONTAINMENT TENSIONING ON HOLD
Farley 1	60		REPAIRING A LEAK IN THE FEEDWATER LUBE OIL PRESSURE SWITCH	*
Farley 2	100
Harris 1	100
Hatch 1	100
Hatch 2	0	03/28/2011	REFUELING OUTAGE
McGuire 1	100
McGuire 2	100
North Anna 1	100
North Anna 2	100
Oconee 1	0	04/01/2011	DEFUELED
Oconee 2	100
Oconee 3	100
Robinson 2	100		LOWERING POWER TO 95% TO PREVENT EXCEEDING ENVIRONMENTAL DISCHARGE TEMPERATURE LIMITS	*
Saint Lucie 1	90		HIGH VIBRATIONS IN CIRC WATER PUMP	*
Saint Lucie 2	0	01/02/2011	EXITING REFUELING OUTAGE	*
Sequoyah 1	100		GRID RISK YELLOW
Sequoyah 2	90		GRID RISK YELLOW - COASTDOWN TO REFUELING OUTAGE	*
Summer	0	04/15/2011	DEFUELED	*
Surry 1	100
Surry 2	0	04/16/2011	REFUELING OUTAGE
Turkey Point 3	100
Turkey Point 4	0	03/20/2011	EXITING REFUELING OUTAGE
Vogtle 1	100
Vogtle 2	100
Watts Bar 1	0	04/03/2011	REFUELING OUTAGE	*

Region 3

Unit	Power	Down	Reason or Comment	Change in report (*)	Number of Scrams (#)
Braidwood 1	100
Braidwood 2	0	04/17/2011	REFUELING OUTAGE
Byron 1	94		HOLDING FOR PLANT TESTING	*
Byron 2	100
Clinton	97		100% ELECTRICAL CAPABILITY
D.C. Cook 1	100
D.C. Cook 2	100
Davis-Besse	100			*
Dresden 2	100
Dresden 3	100
Duane Arnold	100
Fermi 2	100			*
Kewaunee	100
La Salle 1	100
La Salle 2	100
Monticello	0	03/04/2011	REFUELING OUTAGE
Palisades	100
Perry 1	0	04/17/2011	REFUELING OUTAGE
Point Beach 1	100
Point Beach 2	0	02/28/2011	EXITING REFUELING OUTAGE
Prairie Island 1	0	04/29/2011	REFUELING OUTAGE	*
Prairie Island 2	100
Quad Cities 1	100
Quad Cities 2	100

Region 4

Unit	Power	Down	Reason or Comment	Change in report (*)	Number of Scrams (#)
Arkansas Nuclear 1	43		HOLD DUE TO STORMS/DISPATCH REQUEST	*
Arkansas Nuclear 2	77		HOLD DUE TO STORMS/DISPATCH REQUEST	*
Callaway	100
Columbia Generating Station	0	04/02/2011	REFUELING OUTAGE
Comanche Peak 1	100
Comanche Peak 2	100			*
Cooper	0	03/12/2011	EXITING REFUELING OUTAGE
Diablo Canyon 1	100
Diablo Canyon 2	100		WILL REDUCE POWER AND ENTER REFUEL OUTAGE ON 4/30/11	*
Fort Calhoun	0	04/09/2011	DEFUELED
Grand Gulf 1	96		POWER LIMITED 2ND STAGE MSR OUT OF SERVICE FOR THE ENTIRE CYCLE
Palo Verde 1	100
Palo Verde 2	0	04/01/2011	REFUELING OUTAGE
Palo Verde 3	100
River Bend 1	100
San Onofre 2	100
San Onofre 3	98		TURBINE VALVE TESTING	*
South Texas 1	0	04/02/2011	REFUELING OUTAGE
South Texas 2	100
Waterford 3	0	04/05/2011	REFUELING OUTAGE
Wolf Creek 1	0	03/18/2011	DEFUELED

* - 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.