For decades, light water reactors have used control rods to regulate the fission reaction that powers a nuclear plant. The rods move vertically in and out of the core and are made of mat. . .

The operators of Calvert Cliffs nuclear power plant in southern Maryland shut down one of its two reactors Thursday after a control rod assembly malfunctioned during testing, federal safety regulators ...

Holtec’s attempt to restart the shuttered Palisades nuclear plant faces delays, safety questions and missing documentation.

LOWER ALLOWAYS CREEK TWP. — Salem Unit 2 was manually taken offline by control room operators at 10:01 a.m. Friday, according to Joe Delmar, spokesman for PSEG Nuclear, after an issue with one of the ...

Engineers at the Idaho National Laboratory (INL) have reached a critical milestone in the ...

— The Salem 2 nuclear reactor returned to service this morning after being shut down since Friday because of issues with one of the control rods, officials said. Salem Unit 2 came back online and ...

Minneapolis-based Xcel Energy will replace four control rod blades at its Monticello Nuclear Power Plant next month after a major nuclear industry manufacturer reported a potential “substantial safety ...

BUCHANAN, N.Y. (CBSNewYork/AP)-- One of the Indian Point nuclear power plant's reactors was shut down Saturday after several control rods lost power, the plant owner said, marking the latest in a ...

Tokyo Electric Power Company (Tepco) reported that a control rod cannot be removed from the reactor of unit 7 of its Kashiwazaki Kariwa nuclear power plant. The unit shut down automatically when an ...

In this historic photo from the U.S. space agency, control rods for Plum Brook's Mock-Up Reactor, which entered the core from above, are shown. In the Plum Brook reactor, the control rods entered from ...