Boilermakers:

Install generating plant equipment
Install/Replace measuring or control devices such as meters or regulators
Install gauges or controls
Weld metal parts and components
Perform combination welding or cutting procedures
Weld metal structures
Adjust measuring or control devices
Operate pipe fitting equipment
Set-up production equipment or machinery
Install plumbing, piping, or water handling systems
Perform basic plumbing
Cut pipe or piping material for gas, air, hydraulic, refrigeration, water, or steam lines
Cut metal or plastic material
Position structural components
Position machines, equipment, or structures
Mold metal or plastic materials through bending or straightening
Shape metal or plastic
Position workpiece prior to welding
Thread pipe for gas, air, hydraulic, refrigeration, or water lines

Level machines, equipment, or structures
Align machines, equipment, or structures
Replace gas, steam, sewer, or water piping or fixtures
Replace malfunctioning or worn mechanical components
Adjust clearances of mechanical or electrical components or parts
Clean industrial, production, or manufacturing tools, equipment, or machinery
Overhaul power-generating equipment or machinery
Repair gas, steam, oil, sewer, or water piping or fixtures
Repair measuring or control devices
Determine replacement part required
Repair mechanical equipment or machinery
Maintain welding machines or equipment
Maintain mechanical machinery or implements
Repair malfunctioning or worn mechanical components

Build masonry structures including kilns or furnaces
Lay masonry material such as brick, block, paver, stone, or tile
Repair structures in construction, repair, or manufacturing setting
Perform structural repair or assembly work
Mark reference points or cutting lines on workpieces
Build structures in construction, repair, or manufacturing setting
Install construction support structures such as lathing, back up frames, or metal studs
Move heavy objects in industrial, production, or manufacturing environments
Clean work areas