- Domeniu: Government; Labor
- Number of terms: 77176
- Number of blossaries: 0
- Company Profile:
A professional who adjusts anodes on electrolytic cells to regulate voltage, using handtools. Respnsibilities include:
* Attaches voltmeter wires to cell and millivoltmeter wires to anode and observes readings to determine adjustments required.
* Loosens locknut and position nut, using wrenches, to lower anode until specified voltage reading is attained.
* Records cell voltage readings before and after adjustments and records number of anodes adjusted.
* May examine and repair defective cells or notify maintenance personnel of repairs needed.
* May clean cells and clear clogged feedlines, using scrapers, brushes, and rod.
* May seal cell leaks, using putty.
Industry:Professional careers
A professional who adjusts anodes on electrolytic cells to regulate voltage, using handtools. Respnsibilities include:
* Attaches voltmeter wires to cell and millivoltmeter wires to anode and observes readings to determine adjustments required.
* Loosens locknut and position nut, using wrenches, to lower anode until specified voltage reading is attained.
* Records cell voltage readings before and after adjustments and records number of anodes adjusted.
* May examine and repair defective cells or notify maintenance personnel of repairs needed.
* May clean cells and clear clogged feedlines, using scrapers, brushes, and rod.
* May seal cell leaks, using putty.
Industry:Professional careers
A professional who tends catalytic converters that alter chemical composition of liquid or gaseous substances as directed by catalytic-converter operator. Respnsibilities include:
* Moves controls to set material feed, temperature, and pressure regulators at specified values.
* Monitors operation of pumps and auxiliary equipment, such as heat exchangers and absorbers, and moves controls to maintain operating equilibrium in auxiliaries as directed.
* Assists other workers in changing catalyst in reactor units.
* Turns valves to purge converters and sets thermostat on catalyst regenerators to rejuvenate spent catalyst.
* Records instrument readings in operating log.
* May be designated according to product produced as butadiene-converter helper; ethylbenzene-converter helper; ethylene-plant helper; or according to chemical reaction effected as dehydrogenation-converter helper.
Industry:Professional careers
A professional who tends automatic equipment that produces sulfuric acid by contact process: Turns valves and moves levers to start and stop flow of liquids and gases through converter, heat exchangers, absorber, cooler, and related equipment as indicated.
* Monitors lights, gauges, and recording instruments on control panel to determine that temperature, steam pressure, and flow of materials through system conform to plant standards.
* Patrols equipment area and records gauge readings at specified intervals for operating log.
* Collects sample of product for laboratory analysis and performs tests to determine specific gravity and percentage of sulfuric acid being processed.
* Periodically examines emission exits to determine that anti-pollution standards are met.
Industry:Professional careers
A professional who tends tanks, absorption tower, and related equipment that produces cuprous chloride for use as process catalyst, as directed by cuprous-chloride operator. Respnsibilities include:
* Turns valves to transfer materials through auxiliary units, such as coolers, condensers, and absorbers, and to storage tanks.
* Assists cuprous-chloride operator in charging reaction tank with powdered copper.
* Records gauge readings and shift production for operating log.
* Patrols work area to detect and report malfunctions.
Industry:Professional careers
A professional who tends devulcanizers that process ground scrap rubber with chemical compounds under steam pressure to produce reclaim rubber. Respnsibilities include:
* Turns valves and observes gauges to drain specified quantities of materials, such as oil, pigments, and water onto scrap rubber in devulcanizer.
* Closes and bolts loading hatch to seal devulcanizer.
* Turns valves and observes gauges to maintain specified operating temperature and release steam pressure when unloading devulcanizer.
* May attach specified cycle chart to automatic timer.
* Records production data.
* May open discharge valve, allowing steam pressure to blow devulcanized rubber into holding tank.
* May weigh and dump ground scrap rubber into devulcanizers.
* May tend high-pressure devulcanizer and be designated High-Pressure Devulcanizer Operator.
Industry:Professional careers
A professional who tends heated kettle and auxiliary equipment to process molten lead and nitric acid into lead nitrate. Respnsibilities include:
* Loads lead-melting kettle with lead ingots, using hoist.
* Turns valves to regulate flow of fuel oil and air, and tends stoker or shovels coal to fire furnace that melts lead in kettle.
* Ladles molten lead into trough or tips melting kettle to pour molten lead into trough for transfer to vat containing nitric acid where ingredients combine to form lead nitrate.
* Turns outlet valve to transfer lead nitrate to filter press for removal of impurities.
* Tests sample of filtrate for purity by observing color or using litmus paper.
* Starts pumps to transfer batch to storage tank.
* Gauges contents of tanks, using calibrated stick, and records quantity on batch card.
* May ladle molten lead into vats containing cold water to cause solidification into irregular, spongelike shapes, exposing more surface area for faster chemical reaction in subsequent process treatment.
* May drain off water and shovel solidified sponged lead onto conveyor for further processing.
Industry:Professional careers
A professional who tends heated kettle and auxiliary equipment to process molten lead and nitric acid into lead nitrate. Respnsibilities include:
* Loads lead-melting kettle with lead ingots, using hoist.
* Turns valves to regulate flow of fuel oil and air, and tends stoker or shovels coal to fire furnace that melts lead in kettle.
* Ladles molten lead into trough or tips melting kettle to pour molten lead into trough for transfer to vat containing nitric acid where ingredients combine to form lead nitrate.
* Turns outlet valve to transfer lead nitrate to filter press for removal of impurities.
* Tests sample of filtrate for purity by observing color or using litmus paper.
* Starts pumps to transfer batch to storage tank.
* Gauges contents of tanks, using calibrated stick, and records quantity on batch card.
* May ladle molten lead into vats containing cold water to cause solidification into irregular, spongelike shapes, exposing more surface area for faster chemical reaction in subsequent process treatment.
* May drain off water and shovel solidified sponged lead onto conveyor for further processing.
Industry:Professional careers
A professional who assists polymerization-kettle operator in polymerizing raw resin materials to form phenolic, acrylic, and polyester resins. Respnsibilities include:
* Starts pumps and turns valves to route raw materials into designated reactor vessels.
* Dumps powdered ingredients and resins into reactors by hand or using hoist.
* Turns reactor discharge valve to allow material to flow through funnel into drums to fill drums with base and blended resins.
* Marks product data on drums, using precut stencils, ink, and brushes.
* Makes new stencils as necessary, using stencil-cutting machine.
* Transports materials in production area, using handtruck and powered hoists.
* Taps reactors to obtain test samples for laboratory tests.
* Starts pumps and opens valves to pump resin from storage tanks into tank trucks or railroad cars for shipment.
* May tend coolers to reduce temperature of resins after polymerization.
* Performs other duties as described under helper master title.
Industry:Professional careers
A professional who tends vats in which fats or vegetable and animal oils are processed into glycerin and fatty acid. Respnsibilities include:
* Pumps specified amount of fat or oil into vat and admits prescribed quantity of sulfuric acid from storage tank.
* Observes gauges and thermometer and turns steam valves to boil contents of vat.
* Pumps oil or fat to second vat and adds specified amount of distilled water and Twitchell's reagent.
* Starts agitator in vat and turns steam valves to boil mixture for prescribed time.
* Observes mixture through sight glass in pump line and turns valves to transfer fractions of product having different color and density to respective storage tanks.
* Records shift production, materials used, and heating and agitating time.
Industry:Professional careers
