||Septic Tank Servicers and Sewer Pipe Cleaners
- Operate sewer cleaning equipment, including power rodders, high-velocity water jets, sewer flushers, bucket machines, wayne balls, and vac-alls.
- Clean and repair septic tanks, sewer lines, or related structures such as manholes, culverts, and catch basins.
- Clean and disinfect domestic basements and other areas flooded by sewer stoppages.
- Start machines to feed revolving cables or rods into openings, stopping machines and changing knives to conform to pipe sizes.
- Cut damaged sections of pipe with cutters, remove broken sections from ditches, and replace pipe sections, using pipe sleeves.
||Helpers--Pipelayers, Plumbers, Pipefitters, and Steamfitters
- Perform rough-ins, repair and replace fixtures and water heaters, and locate, repair, or remove leaking or broken pipes.
- Clean shop, work area, and machines, using solvent and rags.
- Immerse pipe in chemical solution to remove dirt, oil, and scale.
- Clean and renew steam traps.
||Pipe Fitters and Steamfitters
- Modify, clean, or maintain pipe systems, units, fittings, or related machines or equipment, using hand or power tools.
- Shut off steam, water, or other gases or liquids from pipe sections, using valve keys or wrenches.
- Remove and replace worn components.
||Elevator Installers and Repairers
- Test newly installed equipment to ensure that it meets specifications, such as stopping at floors for set amounts of time.
- Locate malfunctions in brakes, motors, switches, and signal and control systems, using test equipment.
- Operate elevators to determine power demands, and test power consumption to detect overload factors.
- Examine boilers, pressure vessels, tanks, or vats to locate defects, such as leaks, weak spots, or defective sections, so that they can be repaired.
- Inspect assembled vessels or individual components, such as tubes, fittings, valves, controls, or auxiliary mechanisms, to locate any defects.
- Clean pressure vessel equipment, using scrapers, wire brushes, and cleaning solvents.