Job Description:

• 1) Performs any combination of following duties to fabricate fiberglass air containers used in hydraulic systems: Assembles hemispherical mold or mandrel sections of lead alloy to form sphere.

• 2) Covers sphere with rubber-liner halves and cements halves together.

• 3) Examines rubber covering for defects.

• 4) Attaches threaded fittings onto rubber lining at top and bottom of sphere.

• 5) Inserts shaft through fitting opening into sphere and screws into place, using wrench.

• 6) Weighs resin and catalyst in specified amounts and mixes them with agitator.

• 7) Mounts sphere in winding machine and applies resin to surface, using brush.

• 8) Starts machine that winds fiberglass yarn around sphere.

• 9) Measures tension of fiberglass using tensiometer, and adjusts tension arm.

• 10) Removes and weighs fiberglass-covered sphere.

• 11) Records weight on production sheet.

• 12) Places covered spheres in electric oven to bake and dry for specified time.

• 13) Removes and weighs spheres.

• 14) Mounts spheres on steam unit to melt and remove mold.

• 15) Turns valve to admit steam into sphere.

• 16) Turns spigot to discharge molten alloy.

• 17) Weighs sphere and records weight.

• 18) Performs hydrostatic tests on completed spherical containers at various pressures.

• 19) Connects fitting on container to water pipe in safety tank.

• 20) Turns water valves and starts pump to increase pressure in container to specified level.