(Times Free Press) - Federal regulators have given Sequoyah Nuclear Plant a "white" safety finding -- the first level of safety concerns that triggers stepped up federal inspections.

Sequoyah, near Soddy-Daisy and 20 miles from downtown Chattanooga, received notice of the finding in a November letter from the Nuclear Regulatory Commission after the plant's Unit 1 reactor had its fourth unplanned "scram" -- or shutdown -- in less than a year.

"This was due to two trips [unplanned automatic shutdowns] in the fourth quarter of 2010, one trip in the second quarter of 2011 and one trip in the third quarter of 2011," wrote Richard P. Croteau, NRC's director of the division of reactor projects.

Read more about this story from our news partners at the Chattanooga Times Free Press.