The U.S. Nuclear Regulatory Commission, in a news release Thursday, said it has issued a violation of substantial safety significance because of inadequacies in the flood protection plan for the Ft. Calhoun Nuclear Power station.
NRC officials identified the violation during an inspection earlier this year. Inspectors reported OPPD's flood protection strategy may not have been fully effective in a worst-case flooding scenario.
The strategy called for workers to install floodgates in front of doors to the plant’s auxiliary building and intake structure and then pile sandbags on them.
The NRC says in its release that OPPD did have a stockpile of empty sandbags, but did not have enough sand to fill all of them. In addition, their strategy for buttressing floodgates may not have been effective.
OPPD has already addressed the issue. It now has several thousand sandbags already filled stockpiled at the power plant. It has also made other changes to its flood plan.
"This violation is of substantial safety significance because their strategy for protecting the plant against severe flooding was inadequate,” said Region IV Administrator Elmo E. Collins. “It’s very unlikely the site would ever face the kind of flood this plan was designed for, but they are required to be prepared for the absolute worst, just in case.”
OPPD has 30 days to accept the Notice of Violation or contest it.