A licensed reactor operator at the Grand Gulf nuclear power plant confirmed positive for alcohol during a for cause fitness for duty test. The employee’s access to the plant has been terminated.
While random fitness-for-duty tests are administered in a lottery-style system and “winners” report to the medical office for testing, for cause tests are administered after supervisors note aberrant behaviors in workers and orders 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.
Source: Nuclear Regulatory Commission