Occupational Titles Beginning with Letter H

Heat or Frost Insulator

CODE: 114

PRIMARY PURPOSE:

Covers boilers, pipes, tanks, air ducts, storage tanks and refrigeration units with insulating materials such as fiberglass, mineral wool, magnesium, calcium, silica, urethane, foam rubber, styrofoam, cork, plastic, polyurethane, polystyrene, mercerized silk, flax, fiber or other thermal insulation material to reduce loss or absorption of heat, prevent moisture condensation to deaden sound and prevent vibration.

TYPICAL DUTIES:

Wires prefabricated fiberglass covering around steam and hot water piping using hand tools. Trowels mastic or brushes cement on insulation to obtain smooth finish and covers piping with cloth. Fits insulation around boilers, evaporators and turbines. Wires insulation on machinery and staples wire netting over insulation. Trowels cement on wire netting to protect insulating material. Wires cork on salt water, refrigeration and air-conditioning piping. Cements cloth over insulating material to obtain smooth finish. Cuts sheets of insulation into sections using handsaws and miter box. Fits and cements sections around fittings. Covers gas piping for refrigeration or air-conditioning systems with molded plastic. Fabricates detachable insulation for valves or similar fitting by measuring connections, preparing patterns, cutting insulating cloth, stuffing cloth with amosite (plastic pipe covering) and sewing cover together on power sewing machine. Wires detachable covers on valves or fittings using hand tools. Installs fiber glass or spun glass on ventilation systems to deaden sound and prevent vibration. Installs lagging on piping where same is not heavier than .016 gauge.

Heavy Equipment Operator

CODE: 501-558

PRIMARY PURPOSE:

Operates a wide variety of heavy equipment such as backhoes, bulldozers, cranes, dredges, draglines, hoisting equipment, motor graders, power shovels, rollers, scrapers, etc. and related equipment to excavate, grade and move earth, erect structural and reinforcing steel and pour concrete or other hard surface paving material. Classification is normally based on the specific equipment operated or on the specific work performed (i.e. gas or utility pipeline, hydraulic dredging on the Great Lakes, fiber optic cable installation, etc.).

TYPICAL DUTIES:

Adjusts handwheels, depresses pedals and moves levers to drive equipment and control attachments such as blades, buckets, scrapers and swing booms. Turns valves to control air and water output of compressors and pumps. Repairs, maintains and services equipment as needed.

LAST UPDATE: 07/30/1998

HEAVY EQUIPMENT OPERATOR (Line Construction)

CODE: 150

PRIMARY PURPOSE:

Operates heavy equipment on work involving high-voltage transmission and distribution powerlines used to conduct energy between generating stations, substations and consumers whether constructed overhead or underground. Operates heaving equipment for work on highway and street lighting, traffic signal systems, athletic field lighting systems and airport runway and taxiway lighting systems which involve either high or low voltage.

TYPICAL DUTIES:

Sets assembled "H" structures or steel transmission structures. Operates the trencher/backhoe for installation of conduit and pull boxes. Operates the boom line truck for the installation of traffic signals and light poles. Operates the bucket truck for installation and maintenance of traffic signals and pole lights. Operates the air compressor with assorted attachments and the skidsteer with assorted attachments. Operates the auger truck for the digging of pole bases. Operates various pieces of equipment which are used on the outside line portion of a project. The heavy equipment operator does not perform any work that requires the use of hand tools and does not climb or work out of any type of aerial lift equipment. Operates heavy equipment for work on highway and street lighting, traffic signal systems, athletic field lighting systems and airport runway and taxiway lighting systems which involve either high or low voltage.

ACTIVE: Yes LAST UPDATE: 11/14/00

HEAVY TRUCK DRIVER

CODE: 152

PRIMARY PURPOSE:

Operates boom trucks on work involving high-voltage transmission and distribution powerlines used to conduct energy between generating stations, substations and consumers whether constructed overhead or underground. Operates boom trucks for work on highway and street lighting, traffic signal systems, athletic field lighting systems and airport runway and taxiway lighting systems which involve either high or low voltage.

TYPICAL DUTIES:

Operates boom trucks, boom/digger trucks, bucket trucks, 5th wheel tractors and 2 ? ton line trucks. May operate small cranes incidental to the loading of equipment. The heavy truck driver does not perform any work that requires the use of hand tools. Operates trucks for work on highway and street lighting, traffic signal systems, athletic field lighting systems and airport runway and taxiway lighting systems which involve either high or low voltage.

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