- Industry: Government; Labor
- Number of terms: 77176
- Number of blossaries: 0
- Company Profile:
A professional who controls converter and auxiliary equipment that combine hydrogen and nitrogen to produce anhydrous ammonia. Respnsibilities include:
* Lights burner and starts pumps, compressors, scrubbers, and absorption units.
* Moves controls on panelboard to regulate temperatures of solutions and opens valves to admit heated and purified air and hydrogen into combustion chamber of burner, where nitrogen driven from air combines with hydrogen to form ammonia.
* Reads instruments, such as thermometers, pressure gauges, and potentiometers.
* Makes control adjustments according to operating instructions and charts.
* Pumps fresh solutions into scrubbing and absorption towers when readings indicate excessive alkalinity.
* Records operational data in logbook.
* May compute percentage of hydrogen and ammonia in burner gases, using standard test procedure.
Industry:Professional careers
A professional who controls converter and auxiliary equipment that combine hydrogen and nitrogen to produce anhydrous ammonia. Respnsibilities include:
* Lights burner and starts pumps, compressors, scrubbers, and absorption units.
* Moves controls on panelboard to regulate temperatures of solutions and opens valves to admit heated and purified air and hydrogen into combustion chamber of burner, where nitrogen driven from air combines with hydrogen to form ammonia.
* Reads instruments, such as thermometers, pressure gauges, and potentiometers.
* Makes control adjustments according to operating instructions and charts.
* Pumps fresh solutions into scrubbing and absorption towers when readings indicate excessive alkalinity.
* Records operational data in logbook.
* May compute percentage of hydrogen and ammonia in burner gases, using standard test procedure.
Industry:Professional careers
A professional who operates equipment to control chemical reaction of soda ash and milk of lime to make caustic soda. Respnsibilities include:
* Opens valves and starts pumps to fill dissolving tank with specified amounts of soda ash and milk of lime.
* Starts mixer in tank to agitate materials and dissolve solids.
* Draws sample of mixture from tank and measures its gravity with hydrometer.
* Opens water valve to dilute mixture and obtain specified concentrations according to type of product.
* Turns valves and rheostats to adjust feeding of solution to reactor tank.
* Periodically takes samples of reacting liquor and titrates samples with normal acid to determine concentration of caustic soda being formed.
* Conducts similar tests and titrations to determine salt content and concentration of various liquors.
* Clears stopped pipelines and repairs equipment, using handtools.
Industry:Professional careers
A professional who controls equipment to process green liquor (soda ash solution) and lime into caustic liquor used in cooking woodpulp. Respnsibilities include:
* Starts pumps and adjusts valves to control flow of water and lime into tank or revolving drum and over screens to remove lumps to make lime slurry of specified density.
* Adjusts valves to control flow of lime slurry and green liquor into reaction tanks in specified proportions and opens steam valve to heat reaction tank to specified temperature to make caustic cooking liquor.
* Adjusts controls to pump cooking liquor to settling tank and makes titration tests to determine extent of settling of lime sludge.
* Turns valves to pump clear liquor to storage tank and lime sludge to sludge tank.
* May test green liquor and calculate quantity of lime slurry additive.
* May make titration test to determine concentration of cooking liquor.
Industry:Professional careers
A professional who operates equipment to control chemical reaction of soda ash and milk of lime to make caustic soda. Respnsibilities include:
* Opens valves and starts pumps to fill dissolving tank with specified amounts of soda ash and milk of lime.
* Starts mixer in tank to agitate materials and dissolve solids.
* Draws sample of mixture from tank and measures its gravity with hydrometer.
* Opens water valve to dilute mixture and obtain specified concentrations according to type of product.
* Turns valves and rheostats to adjust feeding of solution to reactor tank.
* Periodically takes samples of reacting liquor and titrates samples with normal acid to determine concentration of caustic soda being formed.
* Conducts similar tests and titrations to determine salt content and concentration of various liquors.
* Clears stopped pipelines and repairs equipment, using handtools.
Industry:Professional careers
A professional who controls electrolytic cells to produce caustic soda, chlorine, or hydrogen to specified standards from brine (sodium chloride) solution. Respnsibilities include:
* Regulates brine flow to cells, according to power input and strength of electrolyte.
* Observes flow through sight glasses; reads gauges, chart recorders, and manometer; and moves controls to regulate level of cell liquor, brine flow, cell pressure, current, and temperatures, within efficient operating limits.
* Turns valves and starts pumps to maintain specified back pressure on hydrogen and vacuum on chlorine.
* Observes gauges, turns valves, and starts pumps to tend auxiliary equipment, such as hydrogen scrubbers, water sprayers, condensers, and driers to purify, recover, or further process hydrogen, chlorine, and caustic liquor.
* Inspects cells, contact bars, pumps, turbines, and hydrogen and caustic outlets to detect overheating, stoppages, and leaks.
* Opens valves to flush lines and to draw sample of cell liquor.
* Measures specific gravity of liquor to facilitate process controls using hydrometer.
* Records data, such as temperatures, flow rate, operating time, and repairs made or needed.
* May replace glass and rubber tubing, nipples, and assemblies, and clean cell orifices and vents.
* When operating auxiliary equipment only to recover chlorine or hydrogen gas, may be designated chlorine-cell tender; hydrogen-cell tender.
Industry:Professional careers
A professional who controls equipment in which chemicals or other materials are chlorinated by reaction with chlorine gas. Respnsibilities include:
* Pumps specified amounts of chemicals to chlorinator.
* Reads flowmeter and opens valves to regulate flow of chlorine and rate of chlorination reaction.
* Reads temperature gauges and turns steam and coolant valves to maintain reaction within specified temperature range.
* Tests sample of product for specific gravity and for boiling or freezing point, using hydrometer and thermometer.
* Observes color of product to determine when chlorination is completed.
* Records operating data, such as temperature and pressure in chlorinator and related equipment.
* May operate auxiliary units, such as vaporizer, filters, stills, and stripping columns.
* May be designated according to product formed as bleach chlorinator; sulfur-chloride operator.
Industry:Professional careers
A professional who controls equipment to produce cuprous chloride, used as catalytic agent in chemical processes. Respnsibilities include:
* Weighs or measures specified amounts of cuprous powder and other ingredients, and dumps materials into tank.
* Starts tank agitator and moves controls to heat and agitate ingredients to effect prescribed reaction, and to transfer product to auxiliary equipment for further processing.
* Tests filtrate for impurities, using standard chemical test equipment and procedure, and draws samples of chloride for laboratory analysis.
* Operates hydrogen-chloride coolers, condensers, and absorbers to produce and supply hydrochloric acid to reactor units, using hydrometer to verify that specific gravity is maintained within prescribed limits.
* Compiles inventory reports of materials used and consumed.
* May shovel chloride from filter tank into containers for storage or transfer to other processing areas.
Industry:Professional careers
A professional who controls equipment to produce cuprous chloride, used as catalytic agent in chemical processes. Respnsibilities include:
* Weighs or measures specified amounts of cuprous powder and other ingredients, and dumps materials into tank.
* Starts tank agitator and moves controls to heat and agitate ingredients to effect prescribed reaction, and to transfer product to auxiliary equipment for further processing.
* Tests filtrate for impurities, using standard chemical test equipment and procedure, and draws samples of chloride for laboratory analysis.
* Operates hydrogen-chloride coolers, condensers, and absorbers to produce and supply hydrochloric acid to reactor units, using hydrometer to verify that specific gravity is maintained within prescribed limits.
* Compiles inventory reports of materials used and consumed.
* May shovel chloride from filter tank into containers for storage or transfer to other processing areas.
Industry:Professional careers
A professional who controls heated reaction kettles to process liquid and solid materials into specified chemical products. Respnsibilities include:
* Turns valves or starts automatic metering pumps that admit specified quantity of liquid materials into kettle.
* Weighs and dumps or scoops prescribed solid, granular, or powdered ingredients into kettle, according to production sheet.
* Starts agitator to mix materials for specified time or stirs mixture with paddle.
* Observes gauges and recording instruments, and adjusts valves and controls to maintain temperature, vacuum pressure, and speed of reaction in kettle within prescribed limits.
* Draws sample of product for laboratory analysis.
* May test product for specified characteristics, such as acidity and composition, using standard litmus paper test and pH meter.
* May observe reaction through porthole in equipment and adjust controls to regulate speed or degree of reaction, according to knowledge of process.
* May tend auxiliary equipment, such as quench tanks and filter presses, to process resulting product or ingredients used to sustain reaction.
* May be designated by degree of pressure maintained in kettle as high-pressure-kettle operator; low-pressure-kettle operator.
Industry:Professional careers
