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Oconee 1 - Plant Information & Status

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

Ratings 1 vote

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Community ratings from NukeWorker members. Vote to share your experience working at this facility. Results show the breakdown of Above Average, Average, and Below Average ratings.

Capacity Factor (365-Day)

100%
Current
100%
365-Day Avg
#3
of 94 plants
Min: 100% Max: 100% 0 days <80%

Scram History 3 events since 2011

3
Total
1
Automatic
2
Manual
11.3
Avg Recovery (days)
Recent Events
2018-10-18 Manual TURBINE STEAM SEAL HEADER PRESSURE MALFUNCTION"On 10/19/18 a...
2018-04-12 Manual MANUAL REACTOR TRIP FOLLOWING MAIN FEEDWATER CONTROL PROBLEM...
2016-03-05 Auto EMERGENCY DECLARATION DUE TO FIRE/EXPLOSION IN THE MAIN TRAN...

Performance Charts

Outage Duration Trend

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Scheduled refueling outage durations over time. Green bars are below average, yellow near average, red above. Dashed line shows the plant's historical average. Shorter outages mean better execution.

Power History (12-Month)

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Daily power output as a percentage of rated capacity over the past 365 days. Green segments indicate full power (90%+), yellow shows reduced output, and red indicates significant power reductions or shutdowns.

Outage Timeline

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Visual timeline of all recorded outages. Blue bars are scheduled refueling outages, red bars are forced/unplanned outages. Width represents outage duration. Hover for details.

Facility Statistics

Lifecycle & Tenure
Operating Age: 52.7 Yrs
Build Time: 5.7 Yrs
Lic. Remaining: 26.8 Yrs
Production & Power
Lifetime CF: 90.8%
Efficiency: 32.5%
Generated: 183.6 TWh
Reliability & Outages
Record Run: 936 Days
Refuelings: 16

Ownership & Construction

Owner/Operator: Duke Energy
Architect Engineer: DBDB
Constructor: DUKE

Technical Specs

Reactor Type: PWR
Containment: PWR-DRYAMB
NSS Supplier: B&W LLP
Thermal Power: 2610 MWt
Net Capacity: 847 MWe
Efficiency: 32.5%
Status: Operating

Licensing

Docket #: 05000269
License #: DPR-38
License Type: OL-FP
Const. Permit: 1967-11-06
Operating Lic: 1973-02-06
Commercial Op: 1973-07-15
License Renewed: 2000-05-23
License Exp: 2053-02-06

Facility Map

34.7912, -82.892

Location & Contact

Address:
155 East Pickens Highway
Seneca, SC 29672, USA
Get Directions
Phone: (864) 885-3000

Breaker-to-Breaker Runs 4 runs

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Breaker-to-breaker runs measure continuous operation between refueling outages (470+ days). An active streak means the unit has been running continuously since the last refueling. Longer runs indicate better reliability.
506
Active Streak (days)
Since 2024-11-13
710
Best Run (days)
2020-11-18 → 2022-10-29
695
Avg Run (days)
All Runs
2024-11-13 Active 506 days
2022-11-25 2024-10-22 697 days
2020-11-18 2022-10-29 710 days
2018-12-09 2020-10-17 678 days