US NRC Launches Special Inspection
The US Nuclear Regulatory Commission has begun a special inspection at Energy Northwest's Columbia nuclear plant in Washington, the agency said Monday.
The inspection will focus on a problem with a heat exchanger that cools a room with important emergency electrical equipment, NRC said in a statement.
"The purpose of this special inspection is to better understand the sequence of events that contributed to the maintenance problem and review the licensee's corrective actions to ensure this cooling system will perform as intended," Arthur Howell, NRC Region IV administrator, said in the statement.
Energy Northwest discovered during a recent inspection that a large heat exchanger had not been properly maintained, reducing its capability, the agency said. It said the heat exchanger provides cool air to a room housing electrical circuit breakers and safety-related batteries.
"In the event of an emergency, a redundant system could have contributed to the cooling and workers have taken corrective action to address maintenance issues," the agency said.
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