The Palo Verde Nuclear Generating Station, just west of Phoenix, is conducting its annual siren test on Thursday.

Constellation is conducting its semi-annual, full-volume test of the Limerick Clean Energy Center's emergency warning sirens on Monday, Dec. 1 at 2 p.m.

The Palo Verde Nuclear Generating Station is required to test its emergency notification system, including sirens, every year ...

NEW HILL, NC -- Annual maintenance. That's Duke Energy's explanation for warning sirens around the Harris Nuclear Power plant going off at seemingly random times over the past week. But no one seemed ...

Duke Energy and county emergency officials will conduct quarterly testing of outdoor warning sirens around two nuclear facilities on Wednesday, Oct. 8. The tests will take place between 11 a.m. and 1 ...

SAN CLEMENTE, Calif. (KABC) -- Sirens went off three times between 10 a.m. and noon Wednesday in the San Onofre area, possibly the final drill from the San Onofre Nuclear Generation Station, as the ...

A nuclear power station in the Midstate will test its emergency warning sirens next week. Constellation Energy, which ...

The St. Lucie Nuclear Power Plant outdoor warning sirens will blare at noon Thursday as part of its quarterly testing. A one-minute sound from all 91 sirens will occur, along with a message indicating ...