- Industri: Government; Labor
- Number of terms: 77176
- Number of blossaries: 0
- Company Profile:
A professional who fabricates brick and tile samples and tests samples for conformance to strength specifications. Respnsibilities include:
* Starts machines that grind, sift, and mix clay.
* Molds brick and tile samples, using mold, hand rammer, and trowel.
* Places models in kiln burner and turns switches or valves to heat kiln to specified temperature.
* Removes samples from kiln and places samples on testing machine supports.
* Turns handwheel to force bearing plate against samples.
* Reads gauge to obtain transverse breaking load in pounds per square inch, and records data.
* Inspects products for size, cracks, and other imperfections, using hammer and notched rule.
* May test products for strength, using testing machine.
Industry:Professional careers
A professional who tests fiberglass yarn, fibers, or binder solutions at any stage in manufacturing process to determine if standards are met. Respnsibilities include:
* Weighs samples of fiber and binder solution on balance scales before and after drying in miniature oven and burning in muffle furnace, and computes percentage of binder on fiber and percentage of solids in binder solution, using slide rule or mathematical formula.
* Examines and tests goods returned by customer or at customer's establishment to detect manufacturing defects or damage incurred in transit and records results for use by quality control and production supervisors.
Industry:Professional careers
A professional who collects, inspects, and tests glassware, such as containers and cathode-ray tubes, for conformance to specifications. Respnsibilities include:
* Collects samples to be tested and measured, and marks samples and logs with identifying information, such as batch number, machine number, and mold number.
* Visually inspects glassware for defects, such as striations (stress lines), bubbles, pits, discolorations, incomplete grinding and polishing, and painting flaws, such as chips and smears.
* Fills containers with water to determine fluid capacity by weighing filled container on scales or pouring contents into graduated cylinder.
* Verifies size, shape, radius, thickness, weight, eccentricity, and surface flatness, using templates, calipers, micrometers, scales, eccentricity table, surface blocks, wedge blocks, or electronic measuring instruments.
* Determines annealed quality of glassware by either observing glass through polariscope, measuring wave length of glass color with spectrophotometer, or by examining microsections for annealing striations.
* Immerses containers in hot or cold water tanks to estimate thermal shock resistance.
* Determines bursting point of container by either filling container with water and inserting electrically controlled plunger in container to apply pressure, or placing container in pressurized chamber.
* Cuts glass into wafers and examines glass under microscope to measure micro defects.
* Records results of tests and deviations from standards and submits to supervisor; notifies supervisor of serious defects, such as failure to withstand thermal shock or defective mold.
* May set and adjust measuring devices used in laboratory or by selector.
* May compile specifications from new product orders for setting quality control standards.
* May place sample in test tube, immerse test tube in controlled temperature water, and observe settling point of glass to estimate density of glass.
* May place container in surface abrader to estimate container scratch resistance.
* May place container in jaws of calibrated vice to determine horizontal bursting point.
* May test gob (lump) of molten glass from furnace and forehearth to ensure glass temperatures are within specifications.
* May pack sample ware for shipment to customer.
* May perform dimensional measurements at production work stations and be designated Floor Inspector.
* May be designated according to article inspected as Bottle Inspector; Television-Tube Inspector.
Industry:Professional careers
A professional who tests mat of fiberglass insulation material to determine if product conforms to specifications. Respnsibilities include:
* Cuts sample of mat, using knife or razor blade and template, and weighs mat on balance scale.
* Burns weighed sample in miniature oven to remove binder, weighs burned sample, and computes percentage of binder in sample, using slide rule.
* Suspends sample of mat in styrene solution and times disintegration of sample to determine solubility of binder.
* Places sample between plates of thickness gauge and reads dial indicator before and after application of pressure to gauge to determine thickness with or without stress.
* Records test results on mat-testing record.
Industry:Professional careers
A professional who performs any combination of following duties to fabricate fiberglass air containers used in hydraulic systems. Respnsibilities include:
* Assembles hemispherical mold or mandrel sections of lead alloy to form sphere.
* Covers sphere with rubber-liner halves and cements halves together.
* Examines rubber covering for defects.
* Attaches threaded fittings onto rubber lining at top and bottom of sphere.
* Inserts shaft through fitting opening into sphere and screws into place, using wrench.
* Weighs resin and catalyst in specified amounts and mixes them with agitator.
* Mounts sphere in winding machine and applies resin to surface, using brush.
* Starts machine that winds fiberglass yarn around sphere.
* Measures tension of fiberglass using tensiometer, and adjusts tension arm.
* Removes and weighs fiberglass-covered sphere.
* Records weight on production sheet.
* Places covered spheres in electric oven to bake and dry for specified time.
* Removes and weighs spheres.
* Mounts spheres on steam unit to melt and remove mold.
* Turns valve to admit steam into sphere.
* Turns spigot to discharge molten alloy.
* Weighs sphere and records weight.
* Performs hydrostatic tests on completed spherical containers at various pressures.
* Connects fitting on container to water pipe in safety tank.
* Turns water valves and starts pump to increase pressure in container to specified level.
Industry:Professional careers
A professional who grades samples of asbestos fibers taken from various parts of fiber-manufacturing plant by combining samples and tending machine that agitates known quantity and weight of fibers for specified time.
* Weighs quantity of fibers deposited on each of four screens in machine to find average weight that determines grade of fibers.
* Records grade on bags of fibers according to test results.
* May collect fiber samples from clothing of workers, using portable vacuum device.
* May monitor noise levels at each work station, using sound level meter.
Industry:Professional careers
A professional who bolts round-up ring sections around steel can (cylinder) to retain circular shape of cylinder during casting of reinforced concrete pipe. Respnsibilities include:
* Rolls can on raised track into assembly line position, assisted by other workers.
* Measures and marks length of can to position rings, using gauge and chalk.
* Braces interior of can near end, using curved blocks and jack.
* Aligns mold-ring flange over can end and tightens set bolts, using wrench to lock rings in place.
* Positions and bolts ring halves against can, using jack and wrench.
* Rolls completed can on track to mortar-lining area.
Industry:Professional careers
A professional who operates range consisting of staple cutters, conveyor, binder and water sprayers, drying oven, pressure rollers, inspection table, and automatic cutting and winding device to produce continuous sheets of fiberglass insulation material. Respnsibilities include:
* Turns knob on control panel to heat drying oven.
* Starts range and guides sheet of matted fiberglass under pressure rollers, over inspection table and slitting knives, under cutting blade, and laps end around winding shaft.
* Patrols work area and observes range units, temperature gauge, and flow of material through range to detect irregular operation of machine and variations from standards.
* Examines matted sheets for thin spots and foreign matter.
* Directs strand-and-binder controller to increase or decrease number of fiberglass sliver ends fed into staple cutters to restore finished product to specified thickness.
* Adjusts temperature of oven to dry material according to specifications.
Industry:Professional careers
A professional who builds and replaces clay structures that control flow and temperature of molten glass in melting tanks and drawing kilns. Respnsibilities include:
* Bolts sections of specified wooden mold together, using wrench, and lines assembled mold with paper to prevent adherence of clay to wooden mold.
* Dumps and tamps clay in mold, using tamping tool.
* Disassembles mold and covers clay structure with damp burlap to prevent rapid drying.
* Cuts, chips, and smooths molded clay to form such structures as floaters, shutoff bars, drawbars, and L-blocks, using square, rule, and handtools.
* Transfers clay structures to curing ovens, melting tanks, and drawing kilns, using electric forklift truck.
* Installs clay structure replacements in melting tanks and drawing kilns, using chain hoists and handtools.
* Cleans out openings of melting tanks, using airhose.
* May mix clay for structures.
Industry:Professional careers
A professional who inspects finished concrete building products for flaws, finish, and conformance to dimensional specifications, using blueprints and precision measuring instruments. Respnsibilities include:
* Compares dimensions of product, such as prestressed concrete building panels, conduit, and beams, with blueprints, using micrometer, calipers, fixed gauges, and rule.
* Examines products for flaws, such as cracks, warped sections, bent reinforcing rods, and surface or color irregularities.
* Rejects products not meeting specifications and notifies originating department to repair product or take measures to minimize future irregularities.
* May cast and crush sample concrete product in hydraulic press to test strength of concrete.
Industry:Professional careers
