Boilermakers are involved in building very large tanks, heavy pipe work and pressure vessels for nuclear power plants, refineries, and chemical manufacturers. As a Boilermaker, one assembles, erects and maintains boilers, tanks pressure vessels, heat exchangers, calandrias, pollution control systems, furnaces, condensers, water towers, penstocks and scroll casings using hoisting, rigging, welding equipment, tools and hardware as required by drawings, specifications and the applicable codes and standards.