06/26/11 01:46 PM ET   

OMAHA, Neb. — A berm holding back floodwater at a Nebraska nuclear power plant has collapsed.

The U.S. Nuclear Regulatory Commission says the 2,000-foot berm at the Fort Calhoun Nuclear Station collapsed about 1:30 a.m. Sunday.

There is no danger. The plant has been shut down since early April for refueling, and the commission says there’s no water inside.

Also, the Missouri River isn’t expected to rise past the flood level the plant was designed to handle.

The NRC says its inspectors were at the plant when the berm failed and have confirmed that the flooding has had no impact on the reactor shutdown cooling or the spent fuel pool cooling. NRC spokesman Victor Dricks says the plant remains safe.

NRC Chairman Gregory Jaczko will visit the plant Monday.

Fort Calhoun Nuclear Station: Flood Berm Collapses At Nebraska Nuke Plant.