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Millstone 3 - Plant Information & Status

Technical specifications, contact data, ratings, and licensing history for the Millstone facility.

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Current Reactor Status

Capacity Factor (365-Day)

100%
Current
84.7%
365-Day Avg
#69
of 94 plants
Min: 0% Max: 100% 59 days <80%

Ratings

No ratings yet for this facility.

Facility Statistics

Lifecycle & Tenure
Operating Age: 39.9 Yrs
Build Time: 11.7 Yrs
Lic. Remaining: 19.6 Yrs
Production & Power
Lifetime CF: 90.1%
Efficiency: 33.4%
Generated: 262.3 TWh
Reliability & Outages
Record Run: 547 Days
Refuelings: 17

Scram History 9 events since 2011

9
Total
6
Automatic
3
Manual
3.3
Avg Recovery (days)
Recent Events
2023-05-29 Auto EN Revision Imported Date: 6/1/2023 EN Revision Text: REACTO...
2020-04-12 Auto AUTOMATIC TRIP DUE TO LOW CONDENSER VACUUM "At 1550 EDT on 4...
2020-03-31 Auto AUTOMATIC REACTOR TRIP DUE TO CIRCUIT FAULT On April 1, 2020...
2016-06-11 Manual TECHNICAL SPECIFICATION REQUIRED SHUTDOWN AND REACTOR TRIP A...
2016-05-14 Manual UNUSUAL EVENT DUE TO MAIN GENERATOR HYDROGEN LEAK IN TURBINE...
2016-01-24 Auto AUTOMATIC REACTOR TRIP DUE TO REACTOR COOLANT PUMP TRIP At 0...
2014-05-24 Auto UNUSUAL EVENT DUE TO LOSS OF OFFSITE POWER At 0702 EDT on 5/...
2013-08-08 Auto AUTOMATIC REACTOR TRIP ON LOW STEAM GENERATOR WATER LEVEL Th...
+1 more events

Ownership & Construction

Owner/Operator: Dominion Energy
Architect Engineer: S&W
Constructor: S&W

Technical Specs

Reactor Type: PWR
Containment: PWR-DRYSUB
NSS Supplier: WEST 4LP
Thermal Power: 3650 MWt
Net Capacity: 1220 MWe
Efficiency: 33.4%
Status: Operating

Licensing

Docket #: 05000423
License #: NPF-49
License Type: OL-FP
Const. Permit: 1974-08-09
Operating Lic: 1986-01-31
Commercial Op: 1986-04-23
License Renewed: 2005-11-28
License Exp: 2045-11-25

Facility Map

41.311, -72.1668

Location & Contact

Address:
Rope Ferry Road
Waterford, CT 06385, USA
Get Directions
Phone: (860) 444-5797

Per Diem Data

Photos