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An 800-megawatt reactor on the Missouri River was starting back up after a refueling outage ...
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Fusion42 · 4 November 2026 · Fusion42 review
The Cooper Nuclear Station in Nebraska manually shut down its 800-megawatt boiling water reactor during startup at 9 percent power due to elevated vibrations in the sole operating feedwater pump. The shutdown was precautionary, non-emergency, and without impact on the public or plant safety.
This Wire brief sits within Fusion42's coverage of Clean Energy.
◆ ◆ The Wire takeaway
Operators manually stopped the reactor at low power over pump vibration concerns, signalling ongoing caution in nuclear plant startups. You must ensure your equipment monitoring systems catch early warning signs before active operation escalates to avoid costly trip disruptions.
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1 source · 4 Nov 2026
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