Work in both inside and outside environmental conditions, while exposed to elevated noise levels, vibrations, extreme cold and heat; conditions which require use of a respirator or dust mask; in close proximity to moving parts, electrical currents; working on scaffolding and high places; exposure to natural gas, high heat, hot surfaces, molten metal, chemicals, oils and lubricants. Must have completed or have the equivalence of a craft apprenticeship in one of the following three crafts: Combustion-Instrumentation Technician, Electronic Repairman and Electrical Inspector (Maintenance Electrician) .