The full five-member commission ordered Wednesday that Carolina Power & Light Co. could not begin storing nuclear waste at its Shearon Harris Nuclear Power Plant until the commission's staff answers a list of undisclosed questions.
The ruling temporarily suspends a decision made Dec. 21 by the NRC's Office of Nuclear Reactor Regulation that gave CP&L the green light to begin expanding existing nuclear waste cooling pools.
Jim Warren, director of N.C. Waste Awareness and Reduction Network, said CP&L could continue to work on making the pools operational, but that they would be doing so at the expense of ratepayers.
"There is no certainty at all they will get final approval for this," Warren said.
But CP&L spokesman Mike Hughes said the company had no plans to start storing waste in the newly expanded pool until the middle of the year, when he expects that a final decision will be made by the full NRC.
"We are optimistic it will wrap up in a few weeks or a few months," he said.
The commission's order also blocked an appeal by Orange County against the December ruling. The county is waiting for a formal ruling from the Atomic Safety and Licensing Board, a division of the NRC, on whether an environmental impact statement should be considered before expansion is allowed.
"We are pleased that the (NRC) stopped CP&L from putting waste in the pools, but it's only half a loaf," said Diane Curran, an attorney representing Orange County, in a news release.
"We still believe it was illegal for the NRC staff to issue the license amendment before a hearing is completed -- and we are in a very strong legal position."