Show strong mechanical aptitude in pipe materials, specifications, fittings, seals, water piping/pumping systems, welding, conveying equipment, gearing/bearings/power transmission, rigging/iron working, machining procedures, tolerances, use of power/hydraulic tools, and refractory. Work includes, but not limited to lifting of parts, work in extreme hot and cold areas, working at elevated work stations, working for extended periods during emergency repair work, and computer related activities.