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Byron 2 - Status & History

Comprehensive reactor performance metrics, cycle analysis, and historical outage data.

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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

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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

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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
2025-04-14 2025-05-01 18 536d 2025-04-14 0d
Scheduled
2023-10-09 2023-10-26 18 516d 2023-10-09 0d
Scheduled
2022-04-18 2022-05-11 24 546d 2022-04-11 +7d
Scheduled
2020-10-05 2020-10-19 15 531d 2020-10-05 0d
Scheduled
2019-04-08 2019-04-23 16 534d 2019-04-08 0d
Scheduled
2017-10-02 2017-10-21 20 354d 2017-10-02 0d
Scram # 52295
2016-10-13 2016-10-13 1 150d - -
Scheduled
2016-04-18 2016-05-16 29 543d 2016-04-18 0d
Scheduled
2014-09-29 2014-10-23 25 518d 2014-09-29 0d
Scheduled
2013-04-08 2013-04-29 22 18d 2013-04-08 0d
Scram # 48838
2013-03-21 2013-03-21 1 408d - -
Scram # 47624
2012-01-31 2012-02-07 8 114d - -
Scheduled
2011-09-19 2011-10-09 21 116d 2011-09-19 0d
Unscheduled
2011-05-23 2011-05-26 4 381d - -
Scheduled
2010-04-19 2010-05-07 19 543d 2010-04-19 0d
Scheduled
2008-10-06 2008-10-23 18 342d 2008-10-06 0d
Unscheduled
2007-10-20 2007-10-30 11 171d - -
Scheduled
2007-04-02 2007-05-02 31 530d 2007-04-01 +1d
Unscheduled
2005-10-19 2005-10-19 1 7d - -
Scheduled
2005-09-26 2005-10-12 17 536d 2005-09-25 +1d
Scheduled
2004-03-23 2004-04-08 17 533d 2004-03-22 +1d
Scheduled
2002-09-17 2002-10-07 21 82d 2002-09-17 0d
Unscheduled
2002-06-23 2002-06-27 5 427d - -
Scheduled
2001-04-07 2001-04-22 16 254d 2001-04-07 0d
Unscheduled
2000-07-27 2000-07-27 1 195d - -
Unscheduled
2000-01-13 2000-01-14 2 59d - -
Scheduled
1999-10-23 1999-11-15 24 - 1999-10-23 0d
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