- Domeniu: Government; Labor
- Number of terms: 77176
- Number of blossaries: 0
- Company Profile:
A professional who controls equipment, such as dissolving and mixing drums, catalyst chillers, heat exchangers, filters, moisturizer, vacuum strippers, pumps, and auxiliary equipment to dissolve and blend catalytic agents with isobutylene extract, and mix additive chemicals used to slurry butyl polymers. Respnsibilities include:
* Empties catalyst from drums into dissolving drum to maintain specified concentration.
* Turns valves and instrument control dials on units and control panel to maintain required temperatures, pressures, and flow rates.
* Starts pumps that blend catalyst and feed stock in specified proportions and circulate catalyst through moisturizer, chillers, filters, and vacuum strippers.
* Weighs solid chemicals in required batches.
* Starts mixing tanks to blend additive chemicals used to slurry butane polymers.
* Pumps additives to storage drums.
* Turns valves or lowers liter bottle into vessels to take samples for laboratory tests.
* Gauges storage tanks.
* Records meter and gauge readings, quantities of chemicals used, and other operating information.
Industry:Professional careers
A professional who operates one or more mixing machines to combine tar, asbestos fiber, asphalt, or similar ingredients to make roof coating and cement. Respnsibilities include:
* Starts mixing machine and pump and opens line valve to admit asphalt into mixing machine.
* Observes indicator or measuring stick and stops asphalt flow when specified amount has entered mixing machine.
* Dumps specified ingredients through well into mixing tank or starts conveyor and dumps ingredients onto conveyor leading to mixing machine.
* Reads ammeter to determine consistency of mixture and adds materials as needed, or visually determines when mixture has attained consistency and stops mixing machine.
* Draws off sample of mixture for laboratory testing.
* Turns lock bolts to open lines between mixing tank and storage tank, using wrench.
* Keeps record of batch made, including deviations from written formula.
Industry:Professional careers
A professional who controls equipment to blend butadiene-styrene latexes together with processing oils, stabilizers, and other additives to produce various kinds of synthetic rubber according to formulas. Respnsibilities include:
* Turns valves to connect pipelines from storage tanks to blending tanks or weigh tanks.
* Starts pumps and agitators.
* Turns valves to discharge blended materials from tanks into streams for coagulation.
* Pumps latex into blending tanks to obtain specified mixtures.
* Gauges tank or observes markings on side of tank to verify specified volumes of each type of latex.
* Observes dials and pumps specified amounts of additive materials into weigh tanks.
* Discharges additives into blending tanks.
* Takes samples of blends for laboratory testing.
* Records blend data in logs.
Industry:Professional careers
A professional who tends equipment that mixes chemicals for use in bleaching, cleaning, desizing, latexing, mercerizing, and finishing canvas goods, carpets and rugs, felt goods, and textile yarns and fabrics. Respnsibilities include:
* Weighs or measures quantities of ingredients, such as peroxide, silica, caustic, solvents, emulsions, resins, starches, and detergents, following formula, and pours them into mixing tank.
* Turns valves to admit water into tank up to mark on tank wall.
* Starts mixer and allows solution to mix for specified period of time.
* Turns valve to transfer solution from mixing tank to storage tank.
* Tests solutions in storage tanks with hydrometer, viscosimeter, or by titration to detect variations from standards and adds appropriate ingredients to restore solution to standard strength.
* Records test results, batches of solutions mixed, and chemicals used in each batch for production and inventory purposes.
* May inject steam into solution to dissolve ingredients or cook solution to specified consistency.
* May be designated according to solution mixed as Acid-Bath Mixer; Ammonia-Solution Preparer; Caustic Mixer; Gum Mixer; Latex Compounder; Size Maker; Soap Mixer; Waterproofing Mixer.
Industry:Professional careers
A professional who tends paint-mixing machines that mix paint, lacquer, and stain. Respnsibilities include:
* Attaches powered mixer to barrels of unmixed paint and starts mixer to stir paint for specified time to obtain specified consistency.
* Computes amounts and weights of paint, lacquer, solvent, or thinner required from standard formula, and pours specified amounts into mixing machine.
* Starts mixer and allows it to run for prescribed time to attain specified viscosity and color.
* Measures viscosity, using viscosimeter and stop watch.
* May pump paint from central pumping station to spray booths.
* May filter paint or pyroxylin to remove impurities.
* May maintain record of paint issued and inventory of supplies on hand.
Industry:Professional careers
A professional who tends equipment that blends various types of propellent powders used in manufacture of small arms ammunition. Respnsibilities include:
* Examines and verifies powder with identifying data on container and type of powder specified on work order.
* Pours powder from containers into partitioned hopper and turns knob to adjust rate of flow from hopper compartments according to powder blend proportions.
* Verifies accuracy of hopper adjustment by drawing powder sample from each hopper compartment, using stopwatch to time flow, and weighing samples and calculating rate of flow; or by starting agitator that shakes powders into blending tube, separating blended powders according to grain size, using sieve, and weighing each size.
* Readjusts hopper controls as indicated by rate-of-flow or sieve test until powder proportions match specifications.
* Replaces full containers of blended powder under discharge tube.
* May fill small containers with powder by hand.
Industry:Professional careers
A professional who tends mechanical equipment, such as jaw crusher, disintegrator, ball mill, swing hammer mill, agitator sifter, and silk screen shakers that pulverize and sift ingredients of propellent and priming powders preparatory to blending. Respnsibilities include:
* Feeds raw material into machine or hopper, using hands or scoop.
* Adjusts machines to reduce material to granules of desired size by turning screw, using spanner wrench, to adjust space between reciprocating crusher jaws, or turning rheostat to regulate vibrator speed controlling rate of flow into disintegrator, or changing number of balls or hammers in mills, depending on type of machine used.
* Tends agitator-sifter to sift pulverized ingredients to obtain granules within specified grain size in desired proportions.
* Sends sample to laboratory and computes quantity of individual grain size to be added or screened out to bring blend to acceptable proportions.
* Changes screens, using wrench, to produce desired size granules.
* Pours sifted material into drum and rolls drum on floor to blend material.
* Tends shaker machine to sift pulverized glass through silk screen for blending in priming mixture.
* May hand blend priming compounds.
Industry:Professional careers
A professional who mixes, stores, and issues metal bonding adhesives for use by workers assembling metal parts for aircraft, missile and space vehicles, marine craft, or trailer parts. Respnsibilities include:
* Measures and weighs ingredients according to formula to obtain specified weight and proportion, using scales, balances, and graduated vessels.
* Dumps ingredients into machine, and starts machine that mixes ingredients into adhesives.
* Removes adhesives from machine and stores them in bins.
* Requisitions ingredients, issues adhesives to workers, and keeps records of disposition of materials.
Industry:Professional careers
A professional who tends equipment that blends and screens dry explosive powders in cloth, cone-shaped mixing and screening device to make primer powder for center-fire cartridges. Respnsibilities include:
* Selects and carries predetermined quantities of ingredients from storage magazines and dryhouse to mixing house.
* Positions containers in specified order on dumping shelf of mixing device.
* Moves dump arm by remote control from behind cement wall to empty containers in mixing bag.
* Turns mixing crank specified number of times to move bag center up and down to blend powders, observing operations in mirrors set at angles.
* Pours blended powder into rubber containers, marks with identifying data, and carries them to storage magazines.
* Washes equipment and premises to prevent accumulation of explosive dust.
* Mends and replaces torn mixing bags, using needle and thread.
* Repairs screens and attaches bags to wall of mixing cylinder, using special lacing and tying technique.
* May blend wet mixtures.
Industry:Professional careers
A professional who controls mixing kettles to blend explosive ingredients and produce wet priming mixture used in rim-fire cartridges. Respnsibilities include:
* Carries prescribed quantities of dry powder, ground glass, liquid gum, and other ingredients from storage house to control house.
* Measures and mixes specified amounts of ingredients in rubber basin, using rubber spatula.
* Carries initial mixture to isolated mixing house and scoops it into mixing machine.
* Returns to control house and starts mixer, using switch on control panel.
* Stops mixer at designated intervals to add ingredients and to examine mixture to detect degree of dryness, adding water as required to prevent ignition of mixture during blending.
* Scoops blended mixture into rubber containers (boats), marks boats with identifying data, and carries them to storage house.
* Washes equipment and premises to prevent accumulation of explosive material.
* May prepare ingredients for blending.
Industry:Professional careers
