Right from an Auxiliary Operator job posting:
"Position Description
Responsible for monitoring, control and operation of nuclear station equipment for the control room. This includes starting, stopping, controlling and monitoring steam turbine, main generator and auxiliary turbine generating equipment, pumps, valves, switchgear, controls and other components as required to maintain maximum station capability.
Requirements
Preferred degrees include, engineering, physics, mathematics, chemistry. Course work must include course work in chemistry, math and physics.
Candidate must pass the Plant Operator Selection System (POSS) Examination, the Basic Math and Science Test (BMST), a license medical screening, and obtain unescorted access to a nuclear facility. Shift work is required."