- Settore: Government; Labor
- Number of terms: 77176
- Number of blossaries: 0
- Company Profile:
A professional who prepares vaccines, biologicals, and serums for prevention of animal diseases. Respnsibilities include:
* Inoculates fertilized eggs, broths, or other bacteriological media with organisms.
* Incubates bacteria for specified period and prepares vaccines and serums by standard laboratory methods.
* Tests vaccines for sterility and virus inactivity.
* Prepares standard volumetric solutions and reagents used in testing.
Industry:Professional careers
A professional who controls equipment to produce alum liquor (aluminum sulfate) in continuous process reaction of sulfuric acid with powdered bauxite. Respnsibilities include:
* Notifies other workers to unload bauxite from boxcars into hopper of crusher.
* Starts crusher, mill, and conveyors to replenish storage supply of powdered ore.
* Observes flowmeters and turns valves to regulate flow of powdered ore, acid, and weak alum liquor into first digester in specified proportions to produce mixture of prescribed specific gravity and through other digesters where chemical reaction occurs and resultant aluminum sulfate liquor is settled and diluted to specified concentration.
* Tests samples from each digester, using hydrometer and thermometer, to verify specific gravities and temperatures.
* Turns valves to adjust flow of steam through digester jackets and proportions of materials fed into first digester to regulate temperatures and specific gravities accordingly.
* Pumps finished alum liquor into storage tank and weak alum liquors into settling tanks (thickeners) for recycling into process.
* Records temperatures, specific gravities, and flow rates of materials in operating log and level of alum liquor storage tanks on inventory records.
Industry:Professional careers
A professional who controls equipment to produce alum liquor (aluminum sulfate) in continuous process reaction of sulfuric acid with powdered bauxite. Respnsibilities include:
* Notifies other workers to unload bauxite from boxcars into hopper of crusher.
* Starts crusher, mill, and conveyors to replenish storage supply of powdered ore.
* Observes flowmeters and turns valves to regulate flow of powdered ore, acid, and weak alum liquor into first digester in specified proportions to produce mixture of prescribed specific gravity and through other digesters where chemical reaction occurs and resultant aluminum sulfate liquor is settled and diluted to specified concentration.
* Tests samples from each digester, using hydrometer and thermometer, to verify specific gravities and temperatures.
* Turns valves to adjust flow of steam through digester jackets and proportions of materials fed into first digester to regulate temperatures and specific gravities accordingly.
* Pumps finished alum liquor into storage tank and weak alum liquors into settling tanks (thickeners) for recycling into process.
* Records temperatures, specific gravities, and flow rates of materials in operating log and level of alum liquor storage tanks on inventory records.
Industry:Professional careers
A professional who controls semiautomatic or automatic machines and equipment, such as blenders, mixers, extruders, pelletizers, pumps, blowers, and conveyors, from control panel to produce pellets from plastic flakes. Respnsibilities include:
* Moves controls on panel to start and stop equipment, to set timing devices for operating cycles, and to direct flow of materials on conveyor.
* Observes thermometers, gauges, and meters to verify process conditions.
* Records readings in logs.
* Turns valves to regulate temperature, pressures, and rate of flow of materials.
* Inspects equipment for mechanical defects.
* Gives directions to workers in blending, mixing, and extruding pelletizing materials, and in repairing machines and equipment.
Industry:Professional careers
A professional who controls equipment to liquefy and compress chlorine gas. Respnsibilities include:
* Ascertains demand and disposition of product and equipment malfunctioning from logsheet.
* Adjusts equipment to control temperature, pressure, vacuum, level, and flow rate in refrigerating system and compressors to maintain prescribed flow of gas.
* Calculates ratio of chlorine to hydrogen, using burette and other testing apparatus, and notifies production workers of deviations from specifications.
* Meters out sulfuric acid sealant to maintain specified level in compressors, drying towers, and pumps.
* Records operational and test data, and calculates daily averages of readings on logsheet.
* May direct workers engaged in filling of cylinders and other containers.
* May be designated according to specialized equipment controlled as compressor operator i; refrigeration operator.
Industry:Professional careers
A professional who controls catalytic reactors and auxiliary equipment to produce monovinylacetylene and to refine, vaporize, and transfer product for use in neoprene rubber manufacture. Respnsibilities include:
* Starts pumps, reactors, and blowers.
* Observes gauges and recording instruments and moves controls to regulate flow of gases and liquids, and to maintain temperatures, pressure, and liquid levels in preheaters, reactors, condensers, brine driers, and distillation columns within specified limits.
* Turns valves to regulate concentration of acid and water in catalyst reactor to maintain efficient operating conditions, according to knowledge of process.
* Starts pumps to transfer acid to feed and drip tanks and to admit water to packing in acid scrubbing tanks.
* Cleans reactors, using mechanical reamer.
* Records gauge readings in operating log.
* Directs activities of mva-reactor operator in tending equipment and in drawing and testing product samples.
Industry:Professional careers
A professional who controls semiautomatic furnaces and auxiliary equipment to produce carbon black by partial combustion of crude oil, natural gas, or mixture of both. Respnsibilities include:
* Notifies unit operators to start or shut down equipment units, such as reactors (furnaces), quenchers, precipitators, cyclones (grit collectors), and filters to maintain efficient production.
* Monitors pyrometers, recording meters, and other gauges to verify process conditions as indicated by control panel instruments.
* Turns valves and moves switches on central control panel to regulate temperature, pressure, and flow of fuel and air in reactors, and to transfer accumulated carbon black through auxiliary units to produce carbon black of specified type and grade.
* Tours plant area to verify that equipment is operating as indicated by central control panel.
* Records instrument readings in operating log and reports abnormal conditions to supervisory personnel.
* Gives directions to crew during manual operation of equipment to maintain production or verify accuracy of instrumentized controls.
Industry:Professional careers
A professional who controls equipment to mill flaked adhesive from slurry of flour and water. Respnsibilities include:
* Turns valves or moves levers or side gates to admit steam into pressure cooker to cook milk (slurry of flour and water).
* Opens discharge line after specified period, and signals worker to pump milk paste onto heated rollers that dry paste.
* Adjusts distance between rollers to maintain specified thickness of paste and activates knives that cut paste into flakes.
* Opens hopper chutes to dump flakes into rotating screen cylinder that sifts flakes and transfers them to storage bins.
* Measures temperature of milk at specified intervals, using thermometer, and tests viscosity of milk, using viscometer.
* Determines moisture content of flakes by feeling them or by using moisture meter.
* Weighs standard cupful of paste to determine its density and adjusts water and steam valves to regulate density.
* Inspects equipment to detect malfunctions.
Industry:Professional careers
A professional who controls heated-air tower from control panel to make variety of soap powders by atomizing liquid soap. Respnsibilities include:
* Starts pumps to regulate flow of oil, steam, air, and perfume to tower or collectors.
* Observes temperature, pressure, and flowmeter recorders to ensure uniform product.
* Keeps log of tower operations.
* Weighs sample, dries it in heated chamber, and reweighs sample to calculate moisture loss and percentage of moisture in powder.
* Inspects operating units, such as towers, soap-spray storage tanks, scrubbers, collectors, and driers, to ensure all are functioning and to maintain maximum efficiency in powder-producing towers.
* Gives directions to workers engaged in operating machinery to regulate flow of material and product.
* May oversee cleaning of towers, strainers, and spray tips.
* May make such repairs as replacing damaged strainers.
Industry:Professional careers
A professional who determines density and resistance of carbon samples which have been graphitized and inspects graphitized stock after removal from furnace. Respnsibilities include:
* Marks samples of green stock before graphitization to indicate their position in furnace.
* Receives samples from furnace unloader before remaining charge is unloaded.
* Cleans samples with scraper and steel wool and weighs them.
* Measures samples in several places with diameter rule to obtain average diameter.
* Places samples on resistance-testing device, sets meter to allow specified number of amperes to pass through sample, and records readings from millivoltmeter.
* Calculates average density and average resistance from weight, average diameter, and millivolt reading, using slide rule and formula.
* When furnace is unloaded, marks pieces with resistance grade number of samples.
* Inspects cleaned stock for pits, cracks, burrs, and bends.
* Determines extent of damage from cracks and imperfections, and marks salvageable pieces for cutting to next largest possible size.
* Directs workers to remove inspected pieces.
Industry:Professional careers
