Andrew Winter, a senior manager of equipment reliability at Exelon Nuclear, has a unique occupation: he oversees maintenance schedules for the critical equipment that keeps nuclear power plants running safely and reliably. Winter oversees the maintenance strategy, including preventive maintenance programs, for 22 Exelon reactors at 13 sites. From water pumps to air compressors to power supplies, Andy and his team are responsible for inspecting and maintaining literally thousands of components per plant.