NukeWorker Menu

Byron 1 - Status & History

Comprehensive reactor performance metrics, cycle analysis, and historical outage data. Data refreshed 54 min ago Rx Status: May 1, 2026 at 5:03 AM (M-F)

?
Days of continuous operation since the last outage ended (Started 2026-04-01). Clean run (no forced outages since last refueling).
30
Current Run
days ✔
?
Longest recorded period of continuous operation between outages (2020-03-26 to 2021-09-13).
536
Record Run
days
?
Breaker-to-Breaker runs — continuous operation exceeding the cycle-adjusted threshold (459 days for this 18-month cycle unit) with no trips to 0% power.
14
B2B Runs
?
Lifetime capacity factor: average power level across all recorded days (100% = always at full power).
94.2%
Capacity Factor
?
Total number of scheduled refueling outages detected in the historical data.
20
Outages
since 1999
?
Average time from first power generation (>0%) to sustained full power (≥95% for 2+ days) across the last 3 scheduled outages.
5
Avg Startup
days (last 3)
?
Duration of each outage in days, shown chronologically. Green bars are scheduled refueling outages, red bars are forced/unscheduled. The orange dashed line marks the average duration. Extended outages (>180 days) and D&D periods are excluded.

Outage Duration Trend

?
Days between consecutive scheduled refueling outage starts, showing operating cycle regularity. The purple dashed line marks the average cycle length. Most U.S. reactors operate on 18-month (547 day) or 24-month (730 day) cycles.

Cycle Length History

?
Time in days from first power generation (>0%) to sustained full power (≥95% for 2+ consecutive days) after each scheduled refueling outage. The dashed line marks the average. Includes startup testing holds and power dips.

Startup Duration Trend

?
Monthly capacity factor with outage events overlaid as red bands. Green bars show average power level per month. Toggle to Daily view for raw daily data.

Power History

Scheduled
2026-03-02 2026-04-01 31 519d 2026-03-02 0d
Scheduled
2024-09-09 2024-09-29 21 535d 2024-09-09 0d
Scheduled
2023-03-06 2023-03-24 19 522d 2023-03-06 0d
Scheduled
2021-09-13 2021-09-30 18 536d 2021-09-03 +10d
Scheduled
2020-03-09 2020-03-26 18 532d 2020-03-09 0d
Scheduled
2018-09-10 2018-09-24 15 533d 2018-09-10 0d
Scheduled
2017-02-27 2017-03-26 28 514d 2017-02-27 0d
Scheduled
2015-09-14 2015-10-02 19 190d 2015-09-07 +7d
Scram # 50859
2015-03-04 2015-03-08 5 342d - -
Scheduled
2014-03-10 2014-03-27 18 519d 2014-03-10 0d
Scheduled
2012-09-10 2012-10-07 28 179d 2012-09-09 +1d
Unscheduled
2012-03-12 2012-03-15 4 324d - -
Scheduled
2011-03-14 2011-04-23 41 522d 2011-03-14 0d
Scheduled
2009-09-14 2009-10-08 25 518d 2009-09-14 0d
Scheduled
2008-03-24 2008-04-14 22 146d 2008-03-24 0d
Unscheduled
2007-10-20 2007-10-30 11 370d - -
Scheduled
2006-09-11 2006-10-15 35 535d 2006-09-10 +1d
Scheduled
2005-02-28 2005-03-25 26 504d 2005-02-27 +1d
Scheduled
2003-09-23 2003-10-13 21 319d 2003-09-23 0d
Unscheduled
2002-11-08 2002-11-08 1 23d - -
Unscheduled
2002-10-16 2002-10-16 1 201d - -
Scheduled
2002-03-12 2002-03-29 18 518d 2002-03-12 0d
Scheduled
2000-09-23 2000-10-10 18 495d 2000-09-23 0d
Scheduled
1999-05-14 1999-05-17 4 20d 1999-03-27 +48d
Scheduled
1999-03-27 1999-04-24 29 - 1999-03-27 0d
Page created in 0.003 seconds with 1 queries (cached).