A professional who assembles steam and gas turbine subassemblies according to drawings, using measuring instruments, handtools, and power tools. Responsibilities include:

• Chips, grinds, and files welds and patches on castings and relief areas on cylinder joints to obtain specified clearances or smooth finish, using pneumatic chipping hammer and pedestal grinder.
• Drills and taps holes in castings to seat nipples and valves, using single-spindle drill press.
• Fills castings, high pressure cylinders, turbine exhaust ends, gland casings, relay cylinders, compressor cylinders, and compressor heads with water, using high pressure pump to simulate steam pressure in turbine.
• Measures expansion of unit, using micrometer-scaled rod.
• Inspects weldments, baffles, valves, valve seats, and piping for leaks.
• Inserts heating element of electric heater into hollow studs and heats studs to facilitate tightening with wrenches.
• Bolts or dowels fitted parts together, using wrenches and pneumatic hammer.
• Measures clearances and spacing, using feeler gauges, calipers, and micrometers.
• May cut expansion reliefs in cylinders and exhaust end joints, using portable power hacksaw.