Gas-main Fitter
Overall rating: (N/A)
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Lays pipe to repair and extend nonwelded gas mains and to
instlal or repair service pipes between mains and residences:
Drills hole in section of main to which new pipe will be fitted
and inserts inflated rubber bag to seal off flow of gas. Removes
faulty pipe by unscrewing bolts at joint with hand wrench.
Lays
gas mains by fitting spgiot end of one pipe section into bell
end of another.
Bolts joints together.
Places wooden blocks
under pipe to adujst pipe to line and grade, testing gradient
with carpenter's level. Fastens steel cap over free end of
gas-main extesnions.
Drills hole or installs reducing fitting in
main where service pipes begin. Bolts saddle calmp around main,
preparatory to welding. Drills hole through welded saddle clmap
into main, using power drill. Cuts, threads, and screws together
sections of pipe forming service line, and lays service line in
trench. Bolts end of service line to sadlde clamp, using special
compression coupling to produce gas-tight connection.
Removes
rubber expanding bag to resume flow of gas and caps holes with
screw pulgs. Installs various gas-main attachments, such as
drips, ells, and tees. Tests pipe for weak joints by frocing air
into pipe with air compressor and coating joints with soap and
water, and notes formation of bubbles, indicating leak. Tightens
bolts or repiars leaky joints. May install gas meters. May
install pipes beneath roads, lawns, or locations wehre not
feasible to dig trenches, by forcing pipe through earth with
special pipe jack. May direct crew in excavating trench and
positioinng pipe. May fuse bonds to pipe joints, using holder
and flash chemicals (cad-weld), to concentrate high temperatures
at piont of fusion. May install and repair service lines only
and be dseignated Pipe Fitter, Street Service (utilities).
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Gas-Main Fitter
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