LOS ANGELES (AP) — Federal regulators announced Monday they are considering slapping a California utility with two violations for problems that eventually led to the permanent closure of the San Onofre nuclear power plant.
The Nuclear Regulatory Commission said in a report that Southern California Edison failed to identify a flawed design for four replacement steam generators, which led to excessive wear to hundreds of tubes that carried radioactive water.
"There were opportunities to identify this error during the design of the replacement steam generators," the report concluded.
Edison announced in June it was shutting down the coastal plant between Los Angeles and San Diego for good, surrendering in a costly and drawn-out fight over whether the reactors were too damaged to operate safely.
The trouble began in January 2012, when a small radiation leak led to the discovery of the extensive damage to tubing. The plant never produced electricity again.
Edison said in a statement that the NRC has not imposed financial penalties.
The California Public Utilities Commission announced Monday it would consider a proposal that Edison and San Diego Gas & Electric not be allowed to increase customers' bills to recover money the utilities had to spend purchasing power from other sources after the plant's closure — at least not until the PUC finishes its own investigation.
"I want to assure customers that they will not pay twice for the costs associated with the outage of San Onofre while the CPUC investigation comes to its conclusion. This is a question of fundamental fairness to customers," said CPUC Commissioner Mike Florio.
The commission is scheduled to take up the proposal at its Oct. 31 meeting.
Edison has been fighting with Mitsubishi Heavy Industries Ltd., the Japan-based company that built the generators, over who gets the blame and pays the bill for the problems that centered on how steam flows inside the huge machines. Potentially, billions of dollars could be at stake in the dispute.
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