Following a manual reactor shutdown of one of the two units at the San Onofre nuclear plant, the US Nuclear Regulatory Commission (NRC) is conducting a special inspection.
Located southeast of San Clemente in California, the shut down was caused by a failed pipe connection in a non-safety related compressed air system. The compressed air system provides the power to operate valves at the plant, which are designed to fail in the safe position if they lose air.
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