All
PWR
BWR
All
Auto
Manual
?
Total confirmed reactor scrams (automatic + manual trips) reported to the NRC so far this calendar year.
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Scrams This Year
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Year-end projection based on the current scram rate. Calculated as: (YTD scrams / days elapsed) × 365.
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Projected This Year
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Rolling count of scram events in the last 365 days, regardless of calendar year boundaries.
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Last 365 Days
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Automatic: Reactor Protection System triggered the trip automatically.
Manual: Operator initiated the trip manually (e.g., via manual scram switch).
Manual: Operator initiated the trip manually (e.g., via manual scram switch).
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Auto / Manual
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PWR (Pressurized Water Reactor): Uses pressurized water as coolant; ~65% of U.S. fleet.
BWR (Boiling Water Reactor): Water boils directly in the core; ~35% of fleet.
BWR (Boiling Water Reactor): Water boils directly in the core; ~35% of fleet.
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PWR / BWR
Scram Events by Location
Monthly Scram Trend — Last 3 Years
Annual Scram Totals
Seasonal Pattern (All Years)
PWR vs BWR by Year
Auto vs Manual by Year
Top 15 Plants by Scram Count
Scrams by State — Top 15
Power Level at Time of Scram
Scram Event Log
| Date | Plant | Type | Trip | Power% | Recovery | Description | NRC |
|---|