# Boilermakers > Construct, assemble, maintain, and repair stationary steam boilers and boiler house auxiliaries. Align structures or plate sections to assemble boiler frame tanks or vats, following blueprints. Work involves use of hand and power tools, plumb bobs, levels, wedges, dogs, or turnbuckles. Assist in testing assembled vessels. Direct cleaning of boilers and boiler furnaces. Inspect and repair boiler fittings, such as safety valves, regulators, automatic-control mechanisms, water columns, and auxiliary machines. - Code: 47-2011.00 (O*NET-SOC; SOC 2018 47-2011) - Family: [Construction & Extraction](https://foundation.org.ai/occupations#family-47), one of its 65 occupations - Tasks: 17 tasks (16 core and 1 supplemental) - Page: https://foundation.org.ai/occupations/47-2011.00 - JSON: https://foundation.org.ai/data/tasks/47-2011.00.json ## What the work is made of 1. Attach rigging and signal crane or hoist operators to lift heavy frame and plate sections or other parts into place. Core task · Task 11442 · Rated by 69 people who do the job, July 2015 2. Study blueprints to determine locations, relationships, or dimensions of parts. Core task · Task 11446 · Rated by 68 people who do the job, July 2015 3. Repair or replace defective pressure vessel parts, such as safety valves or regulators, using torches, jacks, caulking hammers, power saws, threading dies, welding equipment, or metalworking machinery. Core task · Task 11441 · Rated by 67 people who do the job, July 2015 4. Locate and mark reference points for columns or plates on boiler foundations, following blueprints and using straightedges, squares, transits, or measuring instruments. Core task · Task 11450 · Rated by 67 people who do the job, July 2015 5. Bolt or arc weld pressure vessel structures and parts together, using wrenches or welding equipment. Core task · Task 11439 · Rated by 68 people who do the job, July 2015 6. Position, align, and secure structural parts or related assemblies to boiler frames, tanks, or vats of pressure vessels, following blueprints. Core task · Task 11449 · Rated by 67 people who do the job, July 2015 7. Install manholes, handholes, taps, tubes, valves, gauges, or feedwater connections in drums of water tube boilers, using hand tools. Core task · Task 11445 · Rated by 68 people who do the job, July 2015 8. Shape or fabricate parts, such as stacks, uptakes, or chutes, to adapt pressure vessels, heat exchangers, or piping to premises, using heavy-metalworking machines such as brakes, rolls, or drill presses. Core task · Task 11451 · Rated by 69 people who do the job, July 2015 9. Assemble large vessels in an on-site fabrication shop prior to installation to ensure proper fit. Core task · Task 11454 · Rated by 68 people who do the job, July 2015 10. Lay out plate, sheet steel, or other heavy metal and locate and mark bending and cutting lines, using protractors, compasses, and drawing instruments or templates. Core task · Task 11444 · Rated by 69 people who do the job, July 2015 11. Examine boilers, pressure vessels, tanks, or vats to locate defects, such as leaks, weak spots, or defective sections, so that they can be repaired. Core task · Task 11438 · Rated by 68 people who do the job, July 2015 12. Shape seams, joints, or irregular edges of pressure vessel sections or structural parts to attain specified fit of parts, using cutting torches, hammers, files, or metalworking machines. Core task · Task 11448 · Rated by 67 people who do the job, July 2015 13. Inspect assembled vessels or individual components, such as tubes, fittings, valves, controls, or auxiliary mechanisms, to locate any defects. Core task · Task 11440 · Rated by 68 people who do the job, July 2015 14. Straighten or reshape bent pressure vessel plates or structure parts, using hammers, jacks, or torches. Core task · Task 11447 · Rated by 69 people who do the job, July 2015 15. Install refractory bricks or other heat-resistant materials in fireboxes of pressure vessels. Core task · Task 11453 · Rated by 66 people who do the job, July 2015 16. Clean pressure vessel equipment, using scrapers, wire brushes, and cleaning solvents. Core task · Task 11452 · Rated by 67 people who do the job, July 2015 17. Bell, bead with power hammers, or weld pressure vessel tube ends to ensure leakproof joints. Supplemental task · Task 11443 · Rated by 68 people who do the job, July 2015 ## More in Construction & Extraction - [Brickmasons and Blockmasons](https://foundation.org.ai/occupations/47-2021.00): 14 tasks - [Carpenters](https://foundation.org.ai/occupations/47-2031.00): 29 tasks - [Carpet Installers](https://foundation.org.ai/occupations/47-2041.00): 16 tasks - [Cement Masons and Concrete Finishers](https://foundation.org.ai/occupations/47-2051.00): 26 tasks - [Construction and Building Inspectors](https://foundation.org.ai/occupations/47-4011.00): 19 tasks - [Construction and Related Workers, All Other](https://foundation.org.ai/occupations/47-4099.00): no tasks listed - [Construction Laborers](https://foundation.org.ai/occupations/47-2061.00): 27 tasks - [Continuous Mining Machine Operators](https://foundation.org.ai/occupations/47-5041.00): 15 tasks - [Derrick Operators, Oil and Gas](https://foundation.org.ai/occupations/47-5011.00): 15 tasks - [Drywall and Ceiling Tile Installers](https://foundation.org.ai/occupations/47-2081.00): 26 tasks - 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Nothing on this page is written by the Org.AI Foundation.