Spent nuclear fuel shifted, Free Lance Star, September 1, 2011:
In another indication of the power of last week’s magnitude-5.8 earthquake, officials at North Anna Power Station said yesterday that 25 of 27 vertical steel casks that hold highly radioactive spent fuel shifted on their pads.
Richard Zuercher, spokesman for Dominion power’s nuclear operations, said none is leaking, all are intact, and there is no danger to the public or plant employees.
“The earthquake did move, slightly, some of the dry storage casks on the pad,” he said. The steel casks, which weigh up to 115 tons when loaded, shifted between an inch and 4 inches.
“We’re evaluating whether we need to move them back,” Zuercher said. [...]
Earthquake caused massive nuclear storage casks to move, Times-Dispatch, August 31, 2011
The shifting of these massive casks holding used nuclear fuel was the first caused by an earthquake in the U.S., according to the U.S. Nuclear Regulatory Commission. [...]
“The information available indicates the shifting did not affect safety in any way,” [NRC spokesman Scott Burnell] said. “It is an instance of an event we had not previously seen, so were [sic] trying to learn as much as possible.” [...]
Last week’s magnitude-5.8 earthquake shook protective electrical devices at the North Anna Power Station strongly enough to cause the plant to shut down automatically, the first time this has occurred in the United States.
The power station remained out of service Wednesday as company and NRC officials continued detailed inspections [...]
h/t Risabee, anonymous tip
Published: September 1st, 2011 at 6:13 am ET
- Spokesman: Quake damaged North Anna’s spent fuel bunkers; Concrete came loose — Not considered ‘serious’ September 1, 2011
- CNN: Officials kept news from public that North Anna’s spent fuel casks shifted — Have known since shortly after quake hit Aug. 23 September 1, 2011
- Mystery fire at Ft. Calhoun nuke plant: Disabled ability to cool spent fuel pool — Feds sending special team of inspectors to learn more — Reactor will not restart until cause determined September 12, 2011
- Nuclear Engineer: If quake caused weakness at Virginia’s North Anna nuke plant, hurricane could take it rest of way to failure August 27, 2011
- Company admits Virginia nuke plant only designed to withstand a magnitude 5.9 – 6.1 earthquake — Today’s quake was 5.9 August 23, 2011