Installss and maintains pipes to
carry water, steam, compressed air, gas, and fluids needed for processing,
manufacturing, heating and cooling. They work on high and low pressure
pipes, power stations, refrigeration or air-conditioning units, heating
systems and services steam and hot water heating systems; air-conditioning
and refrigeration systems; nuclear and fossil fuel power plants; industrial
and commercial instrument systems; cross country pipe lines; chemical and
petro-chemical plants; complete environmental systems in hospitals, schools,
churches, high-rise office and apartment buildings; water and sewage treatment
plants, food processing plants; pharmaceutical manufacturing plants; and
most other installations requiring piping.
The pipe or tubing may be copper,
steel, cast or wrought iron, brass, bronze, glass, plastic, concrete or
any material from which pipe can be made. The size ranges from 1/16" up
to 10 feet and larger in diameter.
Joins pipes mechanically by threading,
flanging, or friction joints; and metallurgically by soldering, brazing
or welding- including shielded metal arc welding; gas tungsten arc welding,
gas metal arc welding and oxy-fuel gas welding.
Cuts pipe and tubing using mechanical
sharp wheel cutters, oxy-fuel gas cutting torches and plasma arc cutting
Tools used by Pipefitters include
reamers, drills, gas torches, welding equipment, pipecutters, benders and
Erects and works on scaffolding;
erects and climbs step ladders, "A" ladders and extension ladders, works
from building steel; works from platforms suspended from cranes.
Pipefitters reads and interprets
blueprints; drawings and sketches including- three view orthographic projections,
and isometric drawings to determine the layout of piping, valves, and fixtures.
They measure, cut, bend, and thread pipes. They cut openings through
ceilings, floors, or walls and fasten pipes with brackets. The Pipefitter
checks a system for leaks by forcing liquid, stream, or air through it
under pressure. They must know how to weld, solder, braze and rig.
They work with cast iron, wrought iron and steel pipe, aluminum, brass,
stainless steel, plastic, glass and special alloy materials.
Requires walking, bending, lifting,
crouching, climbing, kneeling, stretching and standing for long periods.
Measures and fabricates piping and tubing assemblies: using folding rules,
tapes, architects scale rule, squares and inside and outside micrometers
and calipers, builders levels and transits. Uses standard measurement,
metric and engineers measurements.
Requires the use of addition, subtraction,
multiplication, division, squaring and extracting square roots; figuring
areas and volumes, right angle and oblique trigonometry.
Must read and understand technical
literature and write technical reports.
Work is done indoors and out.
It is dirty and noisy and the worker is exposed to heat, cold, fumes and
toxic odors. Work is active and strenuous with prolonged standing;
much walking, reaching and lifting; and occasionally working in cramped
or uncomfortable positions.