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St Lucie nuclear reactor shutdown
Archived — this story has rotated out of today’s deck. It is kept here in full.
The gist
St. Lucie Unit 1 manually tripped at 9:47 a.m. EDT Aug 13 after 3 control rods dropped. Non-emergency, plant stabilized in Hot Standby; Unit 2 unaffected.
Background
The St. Lucie Nuclear Power Plant in Florida has two units; Unit 1 began operations in 1976. On August 13, 2026, while operating at 100% power, three control rods dropped into the reactor core, prompting operators to manually trip the reactor. The NRC classified the event as non-emergency, and the plant was stabilized in Mode 3 (Hot Standby). Unit 2 was not affected.
How it unfolded
- Aug 13, 2026 09:47Unit 1 manually tripped at 9:47 a.m. EDT while at 100% power after 3 control rods dropped into the core.
- Aug 15, 2026NRC event notification report posted; plant stabilized in Mode 3 (Hot Standby).
- Aug 16, 2026FPL Siren Team scheduled maintenance on 92 sirens in St. Lucie and Martin counties, testing emergency notification system.
Who’s saying what
- Official
- NRC classified the event as non-emergency; plant says all systems responded normally.
- Public
- Residents may be concerned about safety, but the siren test is routine maintenance, not an actual emergency.