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Small violation found at recent inspection

Small violation found at recent inspection

May 9th, 2018 by Jenny Gray in News

The Callaway nuclear plant, owned by Ameren Missouri, is in the southeast quadrant of the county and is inspected regularly.

Photo by Helen Wilbers /Fulton Sun.

A recent inspection report concluded no major problems at the Callaway nuclear plant, said Branch Chief Nicholas H. Taylor with the U.S. Nuclear Regulatory Commission.

He notified Fadi Diya, senior vice president and chief nuclear officer at the plant — owned by Ameren Missouri — of one very low safety finding during the March 31 inspection. Taylor stated in a letter Thursday that NRC inspectors presented the findings of the inspection to site Vice President Tim Herrmann and other staffers.

NRC inspectors documented the "green" level violation during their inspection. Taylor stated the NRC treated the violation as a non-cited violation for "failure to maintain emergency operating procedures for aligning auxiliary feed water suction sources. Specifically, the licensee added continuous action steps to emergency operating procedures that placed both motor-driven auxiliary feed water pumps in pull-to-lock and isolated their associated recirculation lines after depleting the two non-safety-related suction sources. These actions cause two of the three safety-related auxiliary feed water pumps to be rendered inoperable prior to aligning the safety-related suction source of essential service water which is credited in accident analysis."

The NRC was also tracking several other issues, including inadequate protection from debris thrown by tornadoes, all of which are now in "closed" status, according to the report.

The senior resident inspector was Dan Bradley of the NRC's Steedman office. The Callaway plant began the inspection period at full power. On March 14, the plant's power was reduced to 45 percent to replace a reactor coolant system flow transmitter, then returned to full power the same day.