On Thursday, April 23rd, around 3:32 pm an employee supervisor confirmed positive after a follow-up fitness for duty test. The licensee denied the employees access to the facility.
Fitness for duty tests are administered either randomly, in a lottery-style system where “winners” get to report to the medical office for testing, or for-cause, which are administrated after supervisors note aberrant behaviors and order follow-up testing to ensure compliance. Aberrant behaviors cover a wide range of actions from staggering, making simple mistakes (such as turning the wrong switch), acting belligerent or out of character, among a multitude of overall deviations from normal behavior for the individual.
The event on Thursday was the second reported fitness for duty violation by an employee supervisor at the V.C. Summer nuclear power plant in the last week.
A call to the South Carolina Electric & Gas Company Public Affairs Department to determine if there was any connection between the two recent fitness for duty violations was not returned by the licensee.
Source: NRC Event Notifications