The Nuclear Regulatory Commission has found three safety and compliance violations at the Millstone nuclear plant that the federal agency says have ‘‘very low safety significance,’’ The Associated Press reports.
The agency said in its quarterly inspection report released Wednesday that one violation involved Millstone operators failing to promptly notify the agency that some monitoring equipment stopped working on April 16.
Millstone is required to provide initial notification to the agency within eight hours of a major loss of monitoring capability. Parent company Dominion declared a radiation monitor inoperable but did not report it until inspectors questioned the control room operators on April 18, the agency said.
Dominion evaluated the condition and made the required notification.
The second violation involved installation of equipment without proper design modifications, causing a valve to open and an uncontrolled loss of coolant.
The third violation was a failure to follow proper procedure to prevent buildup of hydrogen gas. A hydrogen fire would have disabled safety-related systems and potentially injured workers, the Nuclear Regulatory Commission said.
Millstone spokesman Ken Holt said corrections have been made or are being resolved. Regulators typically identify two or three small problems in each quarter or sometimes none, he said.
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