- Bolt or arc-weld pressure vessel structures and parts together,using wrenches and welding equipment and install refractory bricks and other heat-resistant materials in fireboxes of pressure vessels

- Install manholes,handholes,taps,tubes,valves,gauges and feedwater connections in drums of water tube broilers,using hand tools.

- Inspect assembled vessels and individual components,such as tubes,fittings,valves,controls and auxiliary mechanisms,to locate any defects.

- Bell,bead with power hammers,or weld pressure vessels ends,in order to ensure leakproof joints.

- Examine boilers,pressure vessels,tanks,and vats to locate defects such as leaks,weak spots,and defective sections so that they can be repaired.