Fits and assembles components according to assembly blueprints, manuals, engineering memos, sketches, and knowledge of machine construction to construct, rebuild, and repair machines and equipment, using handtools and power tools: Analyzes assembly blueprint and specifications manual, and plans machine building operations. Verifies conformance of parts to stock list and blueprints, using measuring instruments, such as calipers, gauges, and micrometers. Lays out hole locations and drills and taps holes on parts for assembly. Aligns components for assembly, manually or with hoist, and bolts, screws, dowels, welds, or rivets parts together, using handtools, rivet gun, and welding equipment, or arranges for assembly by welder and electrician. Brushes blue pigment on parts and mates them to detect high spots on surfaces. Removes high spots, and smooths surfaces, using chisels, scrapers, files, and powered hand grinder. Verifies alignment and tolerances of moving parts, using measuring instruments, ]uch as dial indicators and thickness gauges. Tests operation of assembly by hand. Assembles, sets up, and operates machine to verify functioning, machine capabilities, and conformance to customer's specifications. May form and fasten piping, fixtures, and attachments required to service machine with air, water, and oil. May install wiring and electrical components to specifications. May work as member of team on limited part of fabrication process. May set up and operate metalworking machines to shape parts.

Repairs and maintains mechanical and hydraulic components of production machines and equipment, such as metal fabricating machine tools, material handling system, and automated lubrication system, following blueprints and specifications and using hand tools, power tools, and precision measuring instruments. Visually inspects and listens to machines and equipment to locate causes of malfunctions. Dismantles machines and equipment to gain access to problem area, using hand tools and power tools. Inspects and measures parts to detect wear, misalignment, or other problems. Removes and replaces worn or defective parts of drive mechanism or hydraulic system, using hand tools and power tools, and following blueprints, diagrams, and service manuals. Realigns and adjusts components, such as spindles and clutches, using hand tools and following diagrams. Locates damaged air and hydraulic pipes on machine, and measures, cuts, threads, and installs new pipe. Starts machines and equipment to test operation following repair. Repairs broken parts, using brazing, soldering, and welding equipment and hand tools. May modify computer-controlled motion of robot, applying knowledge of program commands and using $T3 robot controller $T1 and $T3 teach pendant. $T1 May set up and operate metalworking tools, such as lathe, drill press, or grinder, to make or repair parts. May assist Mechanical Engineer (profess. & kin.) 007.061-014 to modify sketches or computer-generated designs of machine components, such as hydraulic system and drive mechanism, applying knowledge of shop mathematics, hydraulics, and mechanics, and using computer keyboard and software programs. May work as part of team including such workers as Electrician, Maintenance (any industry) 829.261-018; Millwright (any industry) 638.281-018; Pipe Fitter (construction) 862.281-022; Tool Maker (machine shop) 601.280-042. May be designated according to type of machine repaired as Broaching-Machine Repairer (machine tools); Centerless-Grinding-Machine Adjuster (ordnance); Screw-Machine Adjuster, Automatic (ordnance); Screw-Machine Repairer (machine shop).

Sets up and operates conventional, special-purpose, and numerical control (NC) machines and machining centers to fabricate metallic and nonmetallic parts, and fits and assembles machined parts into complete units, applying knowledge of machine shop theory and procedures, shop mathematics, machinability of materials, and layout techniques. Studies blueprints, sketches, drawings, manuals, specifications, or sample part to determine dimensions and tolerances of finished work piece, sequence of operations, and setup requirements. Measures, marks, and scribes dimensions and reference points on material or work piece as guides for subsequent machining [Lay-Out Worker (machine shop) 600.281-018]. Selects, aligns, and secures holding fixtures, cutting tools, attachments, accessories, and materials on machines, such as mills, lathes, jig borers, grinders, and shapers. Calculates and sets controls to regulate machining factors, such as speed, feed, coolant flow, and depth and angle of cut, or enters commands to retrieve, input, or edit computerized machine control media. Starts and observes machine operation to detect malfunctions or out-of-tolerance machining, and adjusts machine controls or control media as required. Verifies conformance of finished work piece to specifications, using precision measuring instruments. Sets up and operates machine on trial run to verify accuracy of machine settings or programmed control data. Fits and assembles parts into complete assembly, using jigs, fixtures, surface plate, surface table, hand tools, and power tools. Verifies dimensions and alignment of assembly, using measuring instruments, such as micrometers, height gauges, and gauge blocks. May install machined replacement parts in mechanisms, machines, and equipment, and test operation of unit to ensure functionality and performance. May operate welding equipment to cut or weld parts. May develop specifications from general description and draw sketch of part or product to be fabricated. May confer with engineers, production personnel, programmers, or others to resolve machining or assembly problems. May specialize in setting up and operating NC machines and machining centers and be designated Numerical Control Machine Machinist (machine shop); or set up and operate NC machines linked to automated storage, retrieval, and moving devices and be designated Flexible Machining System Machinist (machine shop).

Sets up and operates variety of woodworking machines to surface, cut, and shape lumber, and to fabricate parts for wood products, such as doors, door and window frames, furniture, and sashes, according to specifications: Selects, installs, and adjusts saw blades, cutterheads, boring bits, and sanding belts in respective machines, using handtools and rule. Starts machine and makes trial cut. Operates machines to saw [Cut-Off-Saw Operator (woodworking) I 667.682-022; Ripsaw Operator (woodworking) 667.682-066; Variety-Saw Operator (woodworking) 667.682-086]; to smooth and shape lumber and wood parts [Planer Operator (woodworking) 665.682-022; Shaper Operator (woodworking) 665.682-034]; to cut tenons and mortises in woodstock [Tenoner Operator (woodworking) 669.382-018; Mortising-Machine Operator (woodworking) 665.482-014]; to bore holes [Boring-Machine Operator (woodworking) 666.382-010]; to cut slots, grooves, and designs in woodstock [Router Operator (woodworking) 665.682-030]; and to sand lumber, woodstock, and parts [Molding Sander (woodworking) 662.682-010; Cylinder-Sander Operator (woodworking) 662.685-014; Sander, Machine (woodworking) 761.682-014]. Periodically verifies dimensions of parts for adherence to specifications, using gauges and templates. May assemble fabricated parts to make millwork products, such as doors, sashes, and door and window frames. May sharpen machine cutting heads, using handtools and grinder. May be designated according to products as Door Maker (saw. & plan.); Frame Maker (saw. & plan.); Sash Maker (saw. & plan.).

Repairs and maintains, in accordance with diagrams, sketches, operation manuals, and manufacturer's specifications, machinery and mechanical equipment, such as engines, motors, pneumatic tools, conveyor systems, and production machines and equipment, using hand tools, power tools, and precision-measuring and testing instruments. Observes mechanical devices in operation and listens to their sounds to locate causes of trouble. Dismantles devices to gain access to and remove defective parts, using hoists, cranes, hand tools, and power tools. Examines form and texture of parts to detect imperfections. Inspects used parts to determine changes in dimensional requirements, using rules, calipers, micrometers, and other measuring instruments. Adjusts functional parts of devices and control instruments, using hand tools, levels, plumb bobs, and straightedges. Repairs or replaces defective parts, using hand tools and power tools. Installs special functional and structural parts in devices, using hand tools. Starts devices to test their performance. Lubricates and cleans parts. May set up and operate lathe, drill press, grinder, and other metalworking tools to make and repair parts. May initiate purchase order for parts and machines. May repair electrical equipment. May be designated according to machine repaired as Carton-Forming-Machine Adjuster (any industry); Machine Adjuster (tobacco); Maintenance Mechanic, Record Processing Equipment (recording).

Repairs and maintains physical structures of commercial and industrial establishments, such as factories, office buildings, apartment houses, and logging and mining constructions, using hand tools and power tools. Replaces defective electrical switches and other fixtures. Paints structures, and repairs woodwork with carpenter's tools. Repairs plumbing fixtures. Repairs plaster and lay brick. Builds sheds and other outbuildings.

Installs, maintains, and repairs machinery, equipment, physical structures, and pipe and electrical systems in commercial or industrial establishments, following specifications, blueprints, manuals, and schematic drawings, using hand tools, power tools, hoist, crane, and measuring and testing instruments. Visually inspects and tests machinery and equipment, using electrical and electronic test equipment. Listens for unusual sounds from machines or equipment to detect malfunction and discusses machine operation variations with supervisors or other maintenance workers to diagnose problem or repair machine. Dismantles defective machines and equipment and installs new or repaired parts, following specifications and blueprints, using precision measuring instruments and hand tools [Machine Repairer, Maintenance (any industry) 638.261-030]. Cleans and lubricates shafts, bearings, gears, and other parts of machinery, using rags, brushes, and grease gun. Installs and repairs electrical apparatus, such as transformers and wiring, and electrical and electronic components of machinery and equipment [Electrician, Maintenance (any industry) 829.261-018]. Lays out, assembles, installs, and maintains pipe systems and related hydraulic and pneumatic equipment, and repairs and replaces gauges, valves, pressure regulators, and related equipment [Pipe Fitter (construction) 862.281-022]. Repairs and maintains physical structure of establishment [Maintenance Repairer, Building (any industry) 899.381-010]. May install machinery and equipment according to blueprints and other specifications [Millwright (any industry) 638.281-018]. May install, program, or repair automated machinery and equipment, such as robots or $T3 programmable controllers.$T1 May set up and operate machine tools, such as lathe, grinder, drill, and milling machine to repair or fabricate machine parts, jigs and fixtures, and tools. May operate cutting torch or welding equipment to cut or join metal parts. May fabricate and repair counters, benches, partitions, and other wooden structures.

Tends pumps, compressors, and generators to provide power for tools, machinery, and equipment or to heat and move materials such as asphalt. Lubricates, cleans, and repairs machinery, equipment, and tools. Mixes ingredients to create compounds, used to cover or clean surfaces. Loads and unloads trucks and hauls and hoists materials. Erects and disassembles scaffolding, shoring, braces, and other temporary structures. Builds and positions forms for pouring concrete and dismantles forms after use, using saws, hammers, nails, or bolts. Measures, marks, and records openings and distances to lay out area to be graded or to erect building structures. Smooth and finishes freshly poured cement or concrete, using float, trowel, screed, or powered cement finishing tool. Applies caulking compounds by hand or with caulking gun to seal crevices. Positions, joins, aligns, and seals structural components, such as concrete wall sections and pipes.

Coordinates and expedites flow of materials, parts, and assemblies between sections or departments, according to production and shipping schedules or department priorities, and compiles and maintains manual or computerized records. Reviews production schedules and related information and confers with department supervisors to determine material requirements to identify overdue materials and to track material. Requisitions material and establishes sequential delivery dates to departments, according to job order priorities and material availability. Examines material delivered to production departments to verify conformance to specifications. Arranges in-plant transfer of materials to meet production schedules. Computes amount of material required to complete job orders, applying knowledge of product and manufacturing processes. Compiles and maintains manual or computerized records, such as material inventory, in-process production reports, and status and location of materials. May move or transport materials from one department to another, manually or using material handling equipment. May arrange for repair and assembly of material or part. May monitor and control movement of material and parts on automated conveyor system.

Use handtools such as screwdrivers, pliers, wrenches, pressure gauges, and precision instruments, as well as power tools such as pneumatic wrenches, lathes, welding equipment, and jacks and hoists. Inspect brake systems, steering mechanisms, wheel bearings, and other important parts to ensure that they are in proper operating condition. Perform routine maintenance such as changing oil, checking batteries, and lubricating equipment and machinery. Adjust and reline brakes, align wheels, tighten bolts and screws, and reassemble equipment. Raise trucks, buses, and heavy parts or equipment using hydraulic jacks or hoists. Test drive trucks and buses to diagnose malfunctions or to ensure that they are working properly. Inspect, test, and listen to defective equipment to diagnose malfunctions, using test instruments such as handheld computers, motor analyzers, chassis charts, and pressure gauges. Examine and adjust protective guards, loose bolts, and specified safety devices. Inspect and verify dimensions and clearances of parts to ensure conformance to factory specifications. Specialize in repairing and maintaining parts of the engine, such as fuel injection systems.

Performs secretarial duties, utilizing knowledge of medical terminology and hospital, clinic, or laboratory procedures. Takes dictation in shorthand or using Dictaphone. Compiles and records medical charts, reports, and correspondence, using typewriter or word processor. Answers telephone, schedules appointments, and greets and directs visitors. Maintains files.

Fabricates and assembles structural metal products, such as framework or shells for machinery, ovens, tanks, stacks, and metal parts for buildings and bridges according to job order, verbal instructions, and blueprints: Develops layout and plans sequence of operations, applying knowledge of trigonometry, stock allowances for thickness, machine and welding shrinkage, and physical properties of metal. Locates and marks bending and cutting lines onto workpiece. Sets up and operates fabricating machines, such as brakes, rolls, shears, flame cutters, and drill presses [Machine Operator (any industry) I 616.380-018]. Hammers, chips, and grinds workpiece to cut, bend, and straighten metal. Preheats workpieces, using hand torch or furnace. Positions, aligns, fits, and welds together parts [Welder-Fitter (welding) 819.361-010]. Designs and constructs templates and fixtures. Verifies conformance of workpiece to specifications, using square, ruler, and measuring tape. May fabricate and assemble sheet metal products. May set up and operate machine tools associated with fabricating shops, such as radial drill press, end mill, and edge planer.

Disassembles, cleans, adjusts, repairs, and tests oil, gas, and water meters, using hand tools and testing equipment. Connects meter to testing apparatus. Turns valve to permit specified quantity of oil, gas, or water to pass through meter under varying pressure to test meter for leaks and accuracy of recording. Disassembles meter, removing gear train and disk assembly, using hand tools. Removes plant growth, rust, and scale from internal housing and parts, using wire brush, electric buffer, and acid. Repairs or replaces warped or broken disks and gears, and grinds and straightens parts to specified tolerance to fit parts to meter, using grinding machine and hydraulic press. Reassembles and tests meter. Tests large capacity meters in industrial plants to determine accuracy of operation. Records materials used and meters repaired. May install meters [Water-Meter Installer (waterworks)]. May read meters [Meter Reader (utilities; waterworks)].

Installs machinery and equipment according to layout plans, blueprints, and other drawings in industrial establishment, using hoists, lift trucks, hand tools, and power tools. Reads blueprints and schematic drawings to determine work procedures. Dismantles machines, using hammers, wrenches, crowbars, and other hand tools. Moves machinery and equipment, using hoists, dollies, rollers, and trucks. Assembles and installs equipment, such as shafting, conveyors, and tram rails, using hand tools and power tools. Constructs foundation for machines, using hand tools and building materials, such as wood, cement, and steel. Aligns machines and equipment, using hoists, jacks, hand tools, squares, rules, micrometers, and plumb bobs. Assembles machines, and bolts, welds, rivets, or otherwise fastens them to foundation or other structures, using hand tools and power tools. May operate engine lathe to grind, file, and turn machine parts to dimensional specifications. May repair and lubricate machines and equipment. May install robot and modify its program, using T3 teach pendant, T1. May perform installation and maintenance work as part of a team of skilled trades workers.

Lays out, machines, fits, assembles, and finishes metal parts to make and repair dies for die-casting of metal products and metal molds for injection or compression molding of plastic or glass products, analyzing specifications, and applying knowledge of die and mold design and construction. Studies blueprints of product and die or mold, and computes specifications, applying knowledge of shop mathematics and metal die-casting or plastic or glass molding processes and machinery. Plans sequence of operations, visualizing shape of die or mold in reverse of product. Measures, marks, and scribes metal stock to lay out for machining [Lay-Out Worker (machine shop)]. Gives machining specifications to Tool-Machine Set-Up Operators (machine shop) or sets up and operates machines, such as horizontal boring mill, engine lathe, profile milling machine, and pantograph machine to machine outer dimensions and contoured cavity of die or mold [Tool-Machine Set-Up Operator (machine shop); Pantograph-Machine Set-Up Operator (machine shop)]. Grinds, files, and sands parts, using files, emery cloth, and powered grinders, to fit parts for assembly and to smooth and finish cavity. Assembles die or mold, using hand tools. Verifies dimensions, using calipers, T3 planer gauges, T1 and dial indicators. May repair molds and be designated Mold Repairer, Die-Casting And Plastic Molding (machine shop).

Sets up and operates numerical control machine to cut, shape, or form metal work pieces to specifications. Reviews setup sheet and specifications to determine setup procedure, machining sequence, and dimensions of finished work piece. Attaches fixture to machine bed and positions and secures work piece in fixture according to setup instructions, using clamps, bolts, hand tools, power tools, and measuring instruments, such as rule and calipers. Assembles cutting tools in tool holders and positions tool holders in machine spindles as specified, using hand tools, or inserts cutting tools in specified machine magazines. Loads control media, such as disk, tape, or punch card, in machine control console or enters commands to retrieve preprogrammed machine instructions from data base. Manipulates controls and enters commands to index cutting tool to specified T3set pointT1 and to start machine. Observes and listens to machine operation to detect malfunctions, such as worn or damaged cutting tools. Changes cutting tools and location of work piece during machining process as specified in setup instructions. Measures work piece for conformance to specifications, using measuring instruments, such as micrometers, dial indicators, and gauges. Notifies supervisor of discrepancies. May adjust machine feed and speed and change cutters to machine parts according to specifications when automatic programming is faulty or machine malfunctions. May machine materials other than metal, such as composites, plastic, and rubber.

Operates several types of power construction equipment, such as compressors, pumps, hoists, derricks, cranes, shovels, tractors, scrapers, or motor graders, to excavate, move, and grade earth, erect structural and reinforcing steel, and pour concrete or other hard surface paving materials. Turns valves to control air and water output of compressors and pumps. Adjusts hand wheels and depresses pedals to drive machines and control attachments, such as blades, buckets, scrapers, and swing booms. Repairs and maintains equipment. May operate machinery on sales lot or customer's property to demonstrate saleable features of construction equipment and be designated Demonstrator, Construction Equipment (wholesale tr.).

Sets up and operates machine tools to fabricate optical elements and systems, applying knowledge of layout and machining techniques and procedures, shop mathematics, and properties of optical and abrasive materials. Studies work order, blueprints, and sketches to formulate machining plans and sequences. Measures and marks dimensions and reference points to lay out stock for machining. Selects premixed compounds or mixes grinding, polishing, and holding compounds according to formula. Mounts work piece on holding fixture, using adhesive, friction, or vacuum. Mounts and secures work piece and tooling in machines. Operates machines, such as saws, lathes, grinders, milling machines, generators, polishers, and edgers to fabricate optics, fixtures, tools, and mountings of specified sizes and shapes. Grinds and polishes optics, using hand tools, as required. Measures and tests optics, using precision measuring and testing instruments. May develop specifications and drawings from verbal description. May perform experimental work and research to develop new production methods and procedures applying shop mathematics and knowledge of production techniques. May train and direct other workers.

Analyzes defects, and adjusts or repairs electrical and mechanical systems of outboard motors: Disassembles and inspects motor for defective parts, using mechanic's handtools and gauges. Replaces parts, such as gears, magneto points, piston rings, and spark plugs, and reassembles engine. Adjusts carburetor mixture and electrical point settings while motor is running in water-filled test tank. May change propeller to increase motor efficiency, based on size and shape of boat hull. May install or repair steering and throttle controls.

Applies coats of paint, varnish, stain, enamel, or lacquer to decorate and protect interior or exterior surfaces, trimmings, and fixtures of buildings and other structures. Reads work order or receives instructions from supervisor or homeowner regarding painting. Smoothes surfaces, using sandpaper, brushes, or steel wool, and removes old paint from surfaces, using paint remover, scraper, wire brush, or blowtorch to prepare surfaces for painting. Fills nail holes, cracks, and joints with caulk, putty, plaster, or other filler, using caulking gun and putty knife. Selects premixed paints, or mixes required portions of pigment, oil, and thinning and drying substances to prepare paint that matches specified colors. Removes fixtures, such as pictures and electric switchcovers, from walls prior to painting, using screwdriver. Spreads drop cloths over floors and room furnishings, and covers surfaces, such as baseboards, door frames, and windows with masking tape and paper to protect surfaces during painting. Paints surfaces, using brushes, spray gun, or paint rollers. Simulates wood grain, marble, brick, or tile effects. Applies paint with cloth, brush, sponge, or fingers to create special effects. Erects scaffolding or sets up ladders to perform tasks above ground level. May be designated according to type of work performed as Painter, Interior Finish (construction); Painter, Maintenance (any industry); or according to type of material used as Calciminer (construction); Varnisher (construction). May also hang wallpaper and fabrics. [Paperhanger (construction) 841.381-010]. May wash surfaces prior to painting with mildew remover, using brush.

Prepares wood, fiberglass, and metal surfaces for painting, and paints parts, equipment, interiors, and exteriors of ships, boats, and shipyard and marina buildings, using brushes, spray guns, and rollers: Mixes solvents according to formula, and immerses parts in solution or washes surfaces to remove grease, rust, scale, and dirt. Burns off old paint, using blowtorch. Smooths wooden and plaster surfaces, using sandpaper, scrapers, and sanding machines. Fills cracks and holes with patching plaster, putty, or plastic wood. Washes and treats surfaces with oil, turpentine, and other preparations. Brushes and rubs filler material into grained wood to prepare surfaces for painting. Mixes and matches colors of paint, varnish, stain, shellac, and calcimine. Operates spray painting equipment or brushes or rolls paint on surfaces. Sands surfaces between coats and polishes final coat to specified finish. May spray or brush hot plastics or pitch on surfaces. May bake finishes on painted and enameled articles in baking oven. May cut glass and install window and door panes. May hang wallpaper. May cut stencils, and brush or spray lettering and decorations on surfaces.

Designs, lays out, and paints letters and designs to create signs, using measuring and drawing instruments, brushes, and hand tools. Reads work orders to determine type of sign specified, work procedures, and materials required. Sketches design on paper, using drawing instruments, such as angles, rulers, and shading pencils. Lays out design on plastic, silk, or tin to prepare stencil, or on paper to draw pounce pattern, using measuring and drawing instruments. Sketches or follows pattern to draw design or lettering onto objects, such as billboards and trucks, using stencils and measuring and drawing instruments. Brushes paint, lacquer, enamel, or japan over stencil, or paints details, background, and shading to fill in outline or sketch of sign, using paintbrush or airbrush. When painting window signs, draws outline of sign on outside window, using chalk, or dusts pounce pattern to mark outline. Paints inside of window following drawing or outline, using brush. When making gold or silver leaf signs, forms sign by either of following methods: (1) Paints sign, positions leaf over fresh paint, and removes excess leaf after sign has dried, using cotton swab and knife blade. (2) Paints inside of window with watersize (glue), applies leaf, and paints sign in reverse on back of leaf, using paintbrush or airbrush. May cut out letters and apply background coating to construct and prepare signs, using tinning shears. May project layout image on paper and trace outline of design, using projector and electric needle. May specialize in maintenance of signs along railroad right-of-way and be designated Painter, Sign, Maintenance (r.r. trans.).

Paints surfaces of transportation equipment, such as automobiles, buses, trucks, and aircraft, applying knowledge of surface preparation and painting techniques, using spray painting equipment, power tools, and work aids. Cleans, sands, and applies chemical solutions to prepare and condition surfaces prior to painting. Mixes and thins paint or other coating to specified color and consistency according to standard formulas or color charts, using spatula or mixing equipment and viscometer. Masks and covers surfaces not to be painted. Sprays specified amount or thickness of primer, protective, decorative, or finish coatings, such as paint, lacquer, sealer, or enamel, onto prepared surfaces, using spray equipment. Strips, sands, masks, and repaints surfaces, and blends and polishes finish to match surrounding areas, manually or using portable power tools. May apply or retouch paint, using brush. May lay out and paint insignias, symbols, designs, or other markings on painted surfaces, according to blueprints or specifications, using stencils, patterns, measuring instruments, brushes, or spray equipment. May regulate controls on equipment to cure and dry paint or other coatings. May set up portable ventilators, exhaust units, ladders, and scaffolding prior to painting. May operate lifting and moving devices to move materials and equipment and access areas to be painted. May remove accessories from motor vehicles, such as chrome, mirrors, and windshield wipers, prior to repainting. May be designated according to vehicle painted as Auto-Body Painter (automotive ser.); Painter, Aircraft (aircraft mfg.; air trans.); Painter, Aircraft-Production (aircraft mfg.); Painter, Automotive (automotive ser.); Painter, Decorative-Commercial Aircraft (aircraft mfg.).

Lays out, assembles, installs, and maintains pipe systems, pipe supports, and related hydraulic and pneumatic equipment for steam, hot water, heating, cooling, lubricating, sprinkling, and industrial production and processing systems, applying knowledge of system operation, and following blueprints. Selects type and size of pipe, and related materials and equipment, such as supports, hangers, and hydraulic cylinders, according to specifications. Inspects work site to determine presence of obstructions and to ascertain that holes cut for pipe will not cause structural weakness. Plans installation or repair to avoid obstructions and to avoid interfering with activities of other workers. Cuts pipe, using saws, pipe cutter, hammer and chisel, cutting torch, and pipe cutting machine. Threads pipe, using pipe threading machine. Bends pipe, using pipe bending tools and pipe bending machine. Assembles and installs variety of metal and nonmetal pipes, tubes, and fittings, including iron, steel, copper, and plastic. Connects pipes, using threaded, caulked, soldered, brazed, fused, or cemented joints, and hand tools. Secures pipes to structure with brackets, clamps, and hangers, using hand tools and power tools. Installs and maintains hydraulic and pneumatic components of machines and equipment, such as pumps and cylinders, using hand tools. Installs and maintains refrigeration and air-conditioning systems, including compressors, pumps, meters, pneumatic and hydraulic controls, and piping, using hand tools and power tools, and following specifications and blueprints. Increases pressure in pipe system and observes connected pressure gauge to test system for leaks. May weld pipe supports to structural steel members. May observe production machines in assigned area of manufacturing facility to detect machinery malfunctions. May operate machinery to verify repair. May modify programs of automated machinery, such as robots and conveyors, to change motion and speed of machine, using T3 teach pendant, T1 control panel, or keyboard and display screen of T3 robot controller T1 and T3 programmable controller T1. May be designated Steam Fitter (construction) when installing piping systems that must withstand high pressure. May be designated according to type of system installed as Pipe Fitter, Ammonia (construction); Pipe Fitter, Fire-Sprinkler Systems (construction); Pipe Fitter, Gas Pipe (construction); or type of piping used as Pipe Fitter, Plastic Pipe (construction); Pipe Fitter, Soft Copper (construction). May be designated: Airdox Fitter (mine & quarry); Freight-Air-Brake Fitter (railroad equip.); Instrument Fitter (construction); Maintainer, Sewer-And-Waterworks (construction); Pipe Fitter, Maintenance (any industry); Pipe Fitter, Welding (construction); Pneumatic-Tube Fitter (construction); Sprinkler-And-Irrigation-System Installer (construction); Tuyere Fitter (steel & rel.).

Lays out, assembles, installs, and maintains pipe systems, pipe supports, and related hydraulic and pneumatic equipment for sprinkler systems, applying knowledge of system operation, and following blueprints. Selects type and size of pipe, and related materials and equipment, such as supports, hangers, and hydraulic cylinders, according to specifications. Inspects work site to determine presence of obstructions and to ascertain that holes cut for pipe will not cause structural weakness. Plans installation or repair to avoid obstructions and to avoid interfering with activities of other workers. Cuts pipe, using saws, pipe cutter, hammer and chisel, cutting torch, and pipe cutting machine. Threads pipe, using pipe threading machine. Bends pipe, using pipe bending tools and pipe bending machine. Assembles and installs variety of metal and nonmetal pipes, tubes, and fittings, including iron, steel, copper, and plastic. Connects pipes, using threaded, caulked, soldered, brazed, fused, or cemented joints, and hand tools. Secures pipes to structure with brackets, clamps, and hangers, using hand tools and power tools.

Applies coats of plaster to interior walls, ceilings, and partitions of buildings, to produce finished surface, according to blueprints, architect's drawings, or oral instructions, using hand tools and portable power tools. Directs workers to mix plaster to desired consistency and to erect scaffolds. Spreads plaster over lath or masonry base, using trowel, and smoothes plaster with darby and float to attain uniform thickness. Applies scratch, brown, or finish coats of plaster to wood, metal, or board lath successively. Roughens undercoat with scratcher (wire or metal scraper) to provide bond for succeeding coats of plaster. Creates decorative textures in finish coat by marking surface of coat with brush and trowel or by spattering surface with pebbles [STUCCO MASON (construction) 842.381-014]. May install lathing [LATHER (construction) 842.361-010]. May mix mortar. May install guide wires on exterior surface of buildings to indicate thickness of plaster to be applied. May install precast ornamental plaster pieces by applying mortar to back of pieces and pressing pieces into place on wall or ceiling and be designated Ornamental-Plaster Sticker (construction). May specialize in applying finish or rough coats of plaster and be designated Plasterer, Finish (construction); Plasterer, Rough (construction). May apply plaster with spray gun and be designated Plasterer, Spray Gun (construction). May perform maintenance work only and be designated Plasterer, Maintenance (construction).

Fabricates, assembles, reworks, and repairs plastic products, applying knowledge of working characteristics of plastics and bonding techniques, using precision instruments, hand tools, power tools, machines, and equipment. Reads and interprets blueprints, work orders, and related documentation to determine methods and sequence of operations and dimensional and finish specifications. Lays out cutting lines on plastic materials, such as sheet stock and fiberglass or graphite cloth, following template pattern, blueprints, sketches, or sample part, using measuring and marking instruments. Cuts material to size, using shears, knives, cutters, scissors, router, or saw. Mixes ingredients, such as resins, catalysts, fillers, accelerators, and colors, according to formulas, manually or using mixer. Sets up and operates forming machines and presses, or laminates plastic cloth and resins or preimpregnated cloth onto lay up mold or bonding fixture, to shape parts. Wraps bonding fixture or mold in vacuum bagging materials, attaches fittings to mold or fixture, such as vacuum connections, thermocouples, and probes, and exhausts air from vacuum bag to prepare lamination for curing or bonding. Operates oven to cure parts. Trims, drills, reams, countersinks, grinds, and finishes parts to specifications, using templates, hand tools, and power tools. Verifies dimensions of parts, using precision instruments, such as dial indicators, micrometers, and calipers. Fits and assembles parts and attaches hardware and fittings, such as brackets and hinges, using clamps, jigs, fixtures, power tools, and fasteners. Applies tape, foam, or other type of adhesives to assembly for subsequent bonding in autoclave. Repairs and reworks damaged or defective parts and assemblies by lay up, foaming, cementing, molding, potting, casting, or similar methods. May heat parts or materials to facilitate shaping, using oven or heat gun. May fabricate and assemble parts from fiber reinforced plastics (composites) and assorted materials, such as metal and honeycomb, and be designated Bonding And Composite Fabricator (aircraft mfg.); Composites Fabricator And Assembler (aircraft mfg.). May press, smooth, trim, measure, and adjust composite tape during automatic application of tape onto mold or fixture by numerical-control tape laying machine, using scale, knife, and scraper. May wind fiberglass, graphite, nylon, or other natural or synthetic fiber or filament around parts, using filament winding machine, manually applying layers of resinous materials to part at specified intervals during winding process. May be designated by type of part or activity involved as Experimental Plastics Fabricator (aircraft mfg.); Filament-Wound Parts Fabricator (aircraft mfg.); Plastic Parts Fabricator (aircraft mfg.); Plastic-Sign Fabricator (plastic prod.); Plastics Rework And Repair Mechanic (aircraft mfg.).

Assembles, installs, and repairs pipes, fittings, and fixtures of heating, water, and drainage systems, according to specifications and plumbing codes. Studies building plans and working drawings to determine work aids required and sequence of installations. Inspects structure to ascertain obstructions to be avoided to prevent weakening of structure resulting from installation of pipe. Locates and marks position of pipe and pipe connections and passage holes for pipes in walls and floors, using ruler, spirit level, and plumb bob. Cuts openings in walls and floors to accommodate pipe and pipe fittings, using hand tools and power tools. Cuts and threads pipe, using pipe cutters, cutting torch, and pipe-threading machine. Bends pipe to required angle by use of pipe-bending machine or by placing pipe over block and bending it by hand. Assembles and installs valves, pipe fittings, and pipes composed of metals, such as iron, steel, brass, and lead, and nonmetals, such as glass, vitrified clay, and plastic, using hand tools and power tools. Joins pipes by use of screws, bolts, fittings, solder, plastic solvent, and caulks joints. Fills pipe system with water or air and reads pressure gauges to determine whether system is leaking. Installs and repairs plumbing fixtures, such as sinks, commodes, bathtubs, water heaters, hot water tanks, garbage disposal units, dishwashers, and water softeners. Repairs and maintains plumbing by replacing washers in leaky faucets, mending burst pipes, and opening clogged drains. May weld holding fixtures to steel structural members. When specializing in maintenance and repair of heating, water, and drainage systems in industrial or commercial establishments, is designated Plumber, Maintenance (any industry).

Repair, install, adjust, or maintain industrial production and processing machinery or refinery and pipeline distribution systems. Confers with operators and observes, tests, and evaluates operation of machinery and equipment to diagnose cause of malfunction. Disassembles machinery and equipment to remove parts and make repairs. Repairs, replaces, adjusts, and aligns components of machinery and equipment. Fabricates replacement parts. Test-runs repaired machinery and equipment to verify adequacy of repairs. Cleans and lubricates parts, equipment, and machinery. Examines parts for defects, such as breakage or excessive wear. Welds to repair broken metal parts, fabricate new parts, and assemble new equipment. Records repairs and maintenance performed. Enters codes and instructions to program computer-controlled machinery.

Operates boilers, turbines, generators, and auxiliary equipment at generating plant to produce electricity. Monitors control board and regulates equipment, according to procedures and information obtained from recording and indicating instruments. Adjusts controls of water and cold feed systems, blowers, and igniters to start up or shut down boilers. Controls operation of boiler auxiliary equipment, such as water and vacuum pumps, coal driers and pulverizers, steam condensers, and soot blowers, to ensure efficient operation of boilers. Adjusts boiler controls to provide steam at specified temperature and pressure for turbine loads according to power demands. Adjusts controls to regulate speed, voltage, and phase of incoming turbines to coincide with voltage and phase of power being generated. Synchronizes incoming generating units with units in operation and closes circuit breaker at exact instant of coincidence. Monitors gauges to determine effect of generator load on related equipment, such as $T3bus bars$T1 and voltage regulators. Adjusts transformer controls to regulate flow of power between generating stations and substations. Operates switchgear to regulate and transfer power loads to protect maintenance workers engaged in repairing or cleaning equipment. Records malfunctions of equipment, instruments, or controls on log sheet.

Sets up and operates heavy-duty power press to bend, form, stretch, and straighten metal plates, metal extrusions, formed sheet metal, structural shapes, forgings, and weldments as specified by blueprints, layout, and templates. Plans sequence of operations, applying knowledge of physical properties of metal. Measures and sights along work piece, using tape, rule, straightedge, and transit, to mark reference lines. Selects and positions flat, V-block, radius, or special purpose die sets into ram and bed of machine, using jib or crane. Aligns and bolts dies to ram and bed of machine, using gauges, templates, feelers, shims, and wrenches. Turns hand wheel or levers to set depth and pressure of ram stroke. Preheats work piece in furnace, using hand torch. Lifts and positions work piece between dies of machine, using jib or crane and sledge. Starts machine to lower ram which bends or straightens work piece between dies. Repositions work piece and changes dies when making multiple or successive passes. Hand forms or finishes work piece, using hand sledge and anvil. Grinds out burrs and sharp edges, using portable grinder. Inspects and marks job number on finished work piece. May bend or straighten cold metal. May set dies to punch and blank heavy metal. May operate horizontal power press to bend or straighten long pieces of bar stock or structural shapes. May operate press equipped with two or more rams to bend angles or flanges or bend to radius by successive passes; or operate multiple acting hydraulic press to perform deep progressive and reverse draw operations of sheet metal. May be designated according to type press operated as Bulldozer Operator (any industry) II; Stretch-Press Operator (any industry); or according to shape product produced as Dishing-Machine Operator (any industry).

Sets up and operates press to print colored designs on rolls of plastic or plastic-coated material: Positions and clamps printing cylinder on press, using hand tools. Pours inks into ink pans and threads plastic film through press rolls. Starts press and turns wheels to adjust pickup, transfer, and printing rolls. Turns rheostats to regulate speed and feed of press, and temperature of drying box. Examines printed sheet to detect defects, such as wrinkles, tears, smeared printing, and uneven color distribution. Cleans and oils press. Repairs or replaces broken or worn parts of press, using hand tools. May set print on printing cylinder, and blend colored inks, according to job order.

Installs electrical protective signaling systems used to notify central office of fire, burglary, or other irregularities on subscribers' premises. Installs wires, conduits, and signaling units, following blueprints of electrical layouts and building plans and using hand tools, power tools and soldering iron. May repair signaling systems [Protective-Signal Repairer (business ser.)]. Usually is required to possess identification card issued by local authorities.

Inspects, repairs, and replaces electrical protective-signaling systems, such as burglar alarms. Examines signaling installation to ensure sound connections and unbroken insulation. Tests circuits, following wiring specifications, using electrical testing devices, such as ohmmeter or voltmeter. Tightens loose connections and disconnects and replaces defective parts and wiring, using electrician's hand tools. Adjusts controls to test operation of signaling units on subscriber premises and transmission of signals to central station and police and fire departments. Recommends new installation or modification of existing equipment to meet subscriber needs. May install equipment [Protective-Signal Installer (business ser.) 822.361-018]. Usually is required to possess identification card issued by local authorities.

Repairs pumps and pump power units, such as centrifugal and plunger-type pumps, and diesel-engine, gasoline-engine, and electric-motor power units, using hoists and hand tools. Diagnoses trouble in pumps. Dismantles pumps and repairs or replaces defective parts, using hand tools. Reseats and grinds valves. Tests performances of repaired pumps. May wire motor to switchboard and install fuse box. May be designated according to type of pump repaired as Water-Pump Servicer (any industry).

Controls gas-scrubbing and related equipment to remove impurities from gases: Observes temperature, flow, pressure gauges, and liquid-level indicators and moves controls to effect operating equilibrium in equipment, according to plant procedure and correlation of instrument readings. Observes gas-scrubbing fluid through sight glasses to determine process efficiency, indicated by color and flow rate of fluid. Turns valves to maintain brine in brine scrubber at specified strength and regulate temperature of hot water in scrubber jacket, according to indicated efficiency of scrubbing fluid. Inspects pumps, motors, valves, and related equipment and replaces packing in column scrubbers and nitrogen-drying columns at specified intervals with acid, calcium chloride, or brine. Draws samples of gases and fluids for laboratory analysis. Maintains log of gauge readings and results of laboratory analyses. Directs activities of PURIFICATION-Operator HELPER (chemical).

Inspects completed handtools and parts in process, using statistical sampling techniques and following printed procedures, to evaluate quality of products: Selects, according to sampling tables, percentage of production lot of tools, such as planes, bit braces, levels, garden shears, tape, and folding rules. Examines tool or part to judge quality of finish and to detect visible flaws, such as cracks in castings. Measures dimensions and angles for conformance with blueprint or tabular specifications, using measuring instruments. Tests hardness of metal components [Hardness Inspector (heat treating)]. Moves working parts of tool by hand to judge smoothness of action. Function tests mitre boxes and saws by making trial cuts to verify accuracy of mitre gauge and absence of saw run-out. Secures drill bit or counter bore in powered chuck and bores holes in wood to evaluate cutting action. Records findings on chart. Rejects or accepts entire production lot according to quality of sample inspected. Notifies supervisor when sampling indicates progressive deterioration in product quality, in order that corrections can be made in machine setup or operating procedure to forestall production of unacceptable work. Verifies accuracy of production gauges against master gauges. Computes percentages, ratios, and proportions of product-quality deviations in order to prepare engineering reports and analyses.

Installs and repairs industrial and commercial refrigerating systems according to blueprints and engineering specifications, using knowledge of refrigeration, structural layout, and function and design of components. Lays out reference points for installation of structural and functional components, using measuring instruments, such as tape, transit, plumb bob, levels, and square. Drills holes and installs mounting brackets and hangers into floor and walls of building. Lifts and aligns components into position, using hoist or block and tackle. Screws, bolts, rivets, welds, and brazes parts to assemble structural and functional components, such as motors, controls, switches, gauges, wiring harnesses, valves, pumps, compressors, condensers, cores, and pipes. Cuts, threads, and connects pipe to functional components and water or power system of premises [Pipe Fitter (construction) 862.281-018]. Pumps specified gas or fluid into system. Starts system, observes operation, reads gauges and instruments, and adjusts mechanisms, such as valves, controls, and pumps to control level of fluid, pressure, and temperature in system. Dismantles malfunctioning systems and tests components, using electrical, mechanical, and pneumatic testing equipment. Replaces or adjusts defective or worn parts to repair systems. May insulate shells and cabinets of systems. May install wiring to connect components to electric power source. May specialize in installing systems and be designated Refrigeration-System Installer (any industry).

Positions and secures steel bars in concrete forms to reinforce concrete. Determines number, sizes, shapes, and locations of reinforcing rods from blueprints, sketches, or oral instructions. Selects and places rods in forms, spacing and fastening them together, using wire and pliers. Cuts bars to required lengths, using hacksaw, bar cutters, or acetylene torch. May bend steel rods with hand tools or rod bending machine. May reinforce concrete with wire mesh. May weld reinforcing bars together, using arc-welding equipment.

Performs electrical tests and repairs concerned with maintenance and performance evaluation of in-service relays to prevent and remedy abnormal behavior or failure of transmission and distribution lines and equipment. Connects test apparatus to troubled circuit. Analyzes test results and interprets electrical diagrams to locate defective relay. Opens and closes switches to isolate defective relay and makes adjustments or removes relay for repair. Tests circuit and equipment to evaluate such factors as insulation quality, which affect function of relays. Analyzes test data to determine performance characteristics of relays and effect of system modifications on relay performance. Prepares reports of work performed.

Tests, cleans, repairs, and adjusts relays used to protect and control functions of equipment, such as circuit breakers, transformers, and automatic switches in generating stations, substations, and distribution facilities: Connects relay to test board and adjusts test board controls to simulate operating conditions. Observes ammeters, voltmeters, and related test board recording and indicating instruments to determine if relay performs all functions correctly, according to specifications of manufacturer and relay history card. Analyzes reactions of relay to tests to identify cause of malfunction. Tightens bolts, springs, and electrical connections, and adjusts screws to correct malfunction. Adjusts electrical, thermal, and timing elements to calibrate relay, according to installation specifications. Dismantles, cleans, or replaces worn or defective relays, using handtools and brush or feather. Records test results, repairs, adjustments, and related data on relay history card. May periodically inspect and test relays at functioning points. May test and repair related equipment, such as telemetering and supervisory-control devices.

Shapes or cuts materials to specified measurements, using hand tools, machines, or power saw. Assembles and fastens materials, using hand tools and wood screws, nails, dowel pins, or glue, to make framework or props. Builds or repairs cabinets, doors, frameworks, floors, and other wooden fixtures used in buildings, using woodworking machines, carpenter's hand tools, and power tools. Installs structures and fixtures, such as windows, frames, floorings, and trim, or hardware, using carpenter's hand and power tools. Fills cracks and other defects in plaster or plasterboard and sands patch, using patching plaster, trowel, and sanding tool. Finishes surfaces of woodworking or wallboard in houses and buildings, using paint, hand tools, and paneling. Removes damaged or defective parts or sections of structure and repairs or replaces, using hand tools. Measures and marks cutting lines on materials, using ruler, pencil, chalk, and marking gauge. Verifies trueness of structure, using plumb bob and level. Studies specifications in blueprints, sketches, or building plans to determine materials required and dimensions of structure to be fabricated.

Installs electrical wiring, equipment, apparatus, and fixtures, using hand tools and power tools. Maintains and repairs or replaces wiring, equipment and fixtures, using hand tools. Plans layout and installation of electrical wiring, equipment and fixtures consistent with specifications and local codes. Inspects systems and electrical parts to detect hazards, defects, and need for adjustments or repair. Tests electrical systems and continuity of circuits in electrical wiring, equipment, and fixtures, using testing devices, such as ohmmeter, voltmeter, and oscilloscope. Diagnoses malfunctioning systems, apparatus, and components, using test equipment and hand tools. Readies and assembles electrical wiring, equipment and fixtures, using specifications and hand tools. Prepares sketches of location of wiring and equipment or follows blueprints to determine location of equipment and conformance to safety codes. Climbs ladder to install, maintain or repair electrical wiring, equipment and fixtures. Constructs and fabricates parts, using hand tools and specifications.

Covers roofs with roofing materials other than sheet metal, such as composition shingles or sheets, wood shingles, or asphalt and gravel, to waterproof roofs. Cuts roofing paper to size, using knife, and nails or staples it to roof in overlapping strips to form base for roofing materials. Aligns roofing material with edge of roof, and overlaps successive layers, gauging distance of overlap with chalk line, gauge on shingling hatchet, or by lines on shingles. Fastens composition shingles or sheets to roof with asphalt, cement, or nails. Punches holes in slate, tile, terra cotta, or wooden shingles, using punch and hammer. Cuts strips of flashing and fits them into angles formed by walls, vents, and intersecting roof surfaces. When applying asphalt or tar and gravel to roof, mops or pours hot asphalt or tar onto roof base. Applies alternate layers of hot asphalt or tar and roofing paper until roof covering is as specified. Applies gravel or pebbles over top layer, using rake or stiff-bristled broom. May construct and attach prefabricated roof sections to rafters [Carpenter (construction)]. May attach shingles to exterior walls and apply roofing paper and tar to shower pans, decks, and promenades to waterproof surfaces. When specializing in one type of roofing materials, is designated according to specialty as Aluminum-Shingle Roofer (construction); Asbestos-Shingle Roofer (construction); Asphalt, Tar, And Gravel Roofer (construction); Composition Roofer (construction); Roofer, Gypsum (construction); Slate Roofer (construction); Tile-And-Terra-Cotta Roofer (construction); Wood-Shingle Roofer (construction).

Inspects machinery, equipment, and working conditions in industrial or other setting to ensure compliance with occupational safety and health regulations: Inspects machines and equipment for accident prevention devices. Observes workers to determine use of prescribed safety equipment, such as glasses, helmets, goggles, respirators, and clothing. Inspects specified areas for fire-prevention equipment and other safety and first-aid supplies. Tests working areas for noise, toxic, and other hazards, using decibel meter, gas detector, and light meter. Prepares report of findings with recommendations for corrective action. Investigates accidents to ascertain causes for use in recommending preventive safety measures and developing safety program. May demonstrate use of safety equipment.

Repairs and adjusts sewing machines in homes and sewing departments of industrial establishments, using handtools: Turns screws and nuts to adjust machine parts. Regulates length of stroke of needle and horizontal movement of feeding mechanism under needle. Dismantles machines and replaces or repairs broken or worn parts, using handtools. Inspects machines, shafts, and belts. Repairs broken transmission belts. Installs attachments on machines. Initiates orders for new machines or parts. May operate machine tools, such as lathes and drill presses, to make new parts. May be designated according to location in which employed as Fitting-Room Maintenance Mechanic (boot & shoe).

Plans, lays out, fabricates, assembles, installs, and repairs sheet metal parts, equipment, and products, utilizing knowledge of working characteristics of metallic and nonmetallic materials, machining, and layout techniques, using hand tools, power tools, machines, and equipment. Reads and interprets blueprints, sketches, or product specifications to determine sequence and methods of fabricating, assembling, and installing sheet metal products. Selects gauge and type of sheet metal, such as galvanized iron, copper, steel, or aluminum, or nonmetallic material, such as plastics or fiberglass, according to product specifications. Lays out and marks dimensions and reference lines on material, using scribers, dividers, squares, and rulers, applying knowledge of shop mathematics and layout techniques to develop and trace patterns of product or parts [Sheet-Metal Lay-Out Worker (any industry) 809.281-010] or using templates. Sets up and operates fabricating machines, such as shears, brakes, presses, forming rolls, and routers, to cut, bend, block and form, or straighten materials. Shapes metal material over anvil, block, or other form, using hand tools. Trims, files, grinds, deburrs, buffs, and smoothes surfaces, using hand tools and portable power tools. Welds, solders, bolts, rivets, screws, clips, caulks, or bonds component parts to assemble products, using hand tools, power tools, and equipment. Installs assemblies in supportive framework according to blueprints, using hand tools, power tools, and lifting and handling devices. Inspects assemblies and installation for conformance to specifications, using measuring instruments, such as calipers, scales, dial indicators, gauges, and micrometers. Repairs and maintains sheet metal products. May operate computer-aided-drafting (CAD) equipment to develop scale drawings of product or system. May operate laser-beam cutter [Laser-Beam-Machine Operator (welding) 815.682-010] or plasma arc cutter [ARC CUTTER, PLASMA ARC (welding) 816.364-010] to cut patterns from sheet metal. May be designated by type of metal as Coppersmith (any industry); Tinsmith (any industry); or according to type of activity as Fabricator, Special Items (any industry); Model Maker, Sheet-Metal (any industry); Product-Development Worker (any industry); Roofer, Metal (construction); Sheet-Metal Installer (any industry); Sheet-Metal Worker, Maintenance (any industry); Shop Mechanic (any industry).

Lays out and fabricates metal structural parts, such as plates, bulkheads, and frames, and braces them in position within hull of ship for riveting or welding. Lays out position of parts on metal, working from blueprints or templates and using scribe and hand tools. Locates and marks reference lines, such as center, buttock, and frame lines. Positions parts in hull of ship, assisted by RIGGER (ship-boat mfg.). Aligns parts in relation to each other, using jacks, turnbuckles, clips, wedges, and mauls. Marks location of holes to be drilled and installs temporary fasteners to hold part in place for welding or riveting. Installs packing, gaskets, liners, and structural accessories and members, such as doors, hatches, brackets, and clips. May prepare molds and templates for fabrication of nonstandard parts. May tack weld clips and brackets in place prior to permanent welding. May roll, bend, flange, cut, and shape plates, beams, and other heavy metal parts, using shop machinery, such as plate rolls, presses, bending brakes, and joggle machines.

Repairs fractional-horsepower gasoline engines used to power lawnmowers, garden tractors, and similar machines, using hand tools. Locates causes of trouble, dismantles engines, using hand tools, and examines parts for defects. Replaces or repairs parts, such as rings and bearings, using hand tools. Cleans and adjusts carburetor and magneto. Starts repaired engines and listens to sounds to test performance. Replaces engines on machine. May be designated according to type of engine repaired as Lawnmower Mechanic (any industry).

Operates and maintains stationary engines and mechanical equipment, such as steam engines, air compressors, generators, motors, turbines, and steam boilers, to provide utilities, such as light, heat, or power, for buildings and industrial processes: Reads meters and gauges or automatic recording devices at specified intervals to verify operating conditions. Records data, such as temperature of equipment, hours of operation, fuel consumed, temperature or pressure, water levels, analysis of flue gases, voltage load, and generator balance. Adjusts manual controls or overrides automatic controls to bring equipment into recommended or prescribed operating ranges, switch to backup equipment or systems, or to shut down equipment. Visually inspects equipment at periodic intervals to detect malfunctions or need for repair, adjustment, or lubrication. Maintains equipment by tightening fittings, repacking bearings, replacing packing glands, gaskets, valves, recorders, and gauges, and cleaning or replacing burners or other components, using handtools and power tools. May be required to hold license issued by state or municipality, restricting equipment operated to specified types and sizes. May oil and lubricate equipment [Oiler (any industry) 950.685-014]. May perform water titration tests and pour chemical additives, such as water softener, into treatment tank to prevent scale buildup and to clean boiler lines. May record operation and maintenance actions taken during shift in operators logbook. May specialize in equipment designed for industrial processes and be designated Acid-Concentration-Plant-Equipment Engineer (any industry); Air-Compressor-Station Engineer (any industry); Diesel-Engine Operator, Stationary (any industry); Water-Pumping-Station Engineer (any industry).

Strips photographic negative from film base and mounts negative on glass plate or plate making $T3 flat $T1 to be used in preparing photoengraving plates, using art layout, blueprint, and hand tools. Examines negative to detect defective areas, using lighted viewing table. Spots or blocks out defective areas, using opaque and brush. Pours rubber solution and collodion over film base to toughen negative. Dries base, using blotter, and cuts negative to size, using knife and straightedge. Immerses glass or film base in acid bath to loosen negative. Strips negative from base. Mounts and aligns negative on glass plate or plate making flat, according to art layout, blueprint, and color register. Rubs negative to remove excess water and to ensure adhesion to plate, using blotter. May control equipment to produce photographic negatives preparatory to stripping. May be designated according to type of negative stripped as Stripper, Black And White (print. & pub.); Stripper, Color (print. & pub.).

Performs any combination of the following duties to raise, place, and unite girders, columns, and other structural-steel members to form completed structures or structure frameworks, working as member of crew. Sets up hoisting equipment for raising and placing structural-steel members. Fastens steel members to cable of hoist, using chain, cable, or rope. Signals worker operating hoisting equipment to lift and place steel member. Guides member, using tab line (rope) or rides on member in order to guide it into position. Pulls, pushes, or pries steel members into approximate position while member is supported by hoisting device. Forces members into final position, using turnbuckles, crowbars, jacks, and hand tools. Aligns rivet holes in member with corresponding holes in previously placed member by driving drift pins or handle of wrench through holes. Verifies vertical and horizontal alignment of members, using plumb bob and level. Bolts aligned members to keep them in position until they can be permanently riveted, bolted, or welded in place. Catches hot rivets tossed by Rivet Heater (heat treating) in bucket and inserts rivets in holes, using tongs. Bucks (holds) rivets while Riveter,Pneumatic (any industry) uses air hammer to form heads on rivets. Cuts and welds steel members to make alterations, using oxyacetylene welding equipment. May specialize in erecting or repairing specific types of structures and be designated Bridge-Maintenance Worker (construction); Chimney Builder, Reinforced Concrete (construction); Scaffold Builder, Metal (construction); Structural-Steel-Equipment Erector (construction).

Controls equipment, such as current converters, voltage transformers, and circuit breakers, that regulate flow of electricity through substation of electric power system and over distribution lines to consumers: Records readings of switchboard instruments to compile data concerning quantities of electric power used for substation operation and amounts distributed from station. Communicates with Load Dispatcher (utilities) to report amount of electricity received into substation, and to receive switching instructions. Observes switchboard instruments to detect indications of line disturbances, such as grounded, shorted, or open circuits. Pulls circuit breaker switch or pushes buttons to interrupt flow of current in disturbed line preparatory to repair, and to connect alternate circuit to carry load of deenergized lines. Records temperature of transformers at specified intervals. May inspect equipment, such as transformers, pumps, fans, batteries, and circuit breakers to detect defects. May calculate average and peak load conditions from electric recording instrument data and compile periodic report of load variations for system planning purposes. May locate and replace defective fuses and switches, using test lamp and handtools. May be designated according to primary function of substation as Substation Operator, Conversion (utilities); Substation Operator, Distribution (r.r. trans.; utilities); Substation Operator, Transforming (utilities). May operate auxiliary generators and be designated Substation Operator, Generation (utilities). May control several remote-controlled substations from central station switchboard and be designated Substation Operator, Automatic (utilities).

Obtains data pertaining to angles, elevations, points, and contours used for construction, map making, mining, or other purposes, using alidade, level, transit, plane table, Theodolite, electronic distance measuring equipment, and other surveying instruments. Compiles notes, sketches, and records of data obtained and work performed. Directs work of subordinate members of survey team. Performs other duties relating to surveying work as directed by Chief of Party (profess. & kin.).

Cleans, adjusts, and performs minor repairs to swimming pools and auxiliary equipment. Removes leaves and other debris from surface of water, using net. Cleans bottom and sides of pool, using such aids as underwater vacuum cleaner, hose, brush, detergent, acid solution, and sander. Inspects and replaces loose or damaged tile. Cleans and repairs filter system. Adjusts and performs minor repairs to heating and pumping equipment, using mechanic's hand tools. Dumps chemicals, in prescribed amounts, to purify water in pool. Prepares service report of materials used and work performed.

Seals joints between plasterboard or other wallboards to prepare wall surface for painting or papering. Mixes sealing compound by hand or with portable electric mixer, and spreads compound over joints between boards, using trowel, broad knife, or spatula. Presses paper tape over joint to embed tape into compound and seal joint, or tapes joint, using mechanical applicator that spreads compound and embeds tape in one operation. Spreads and smooths cementing material over tape, using trowel or floating machine to blend joint with wall surface. Sands rough spots after cement has dried. Fills cracks and holes in walls and ceiling with sealing compound. Installs metal molding at corners in lieu of sealant and tape. Usually works as member of crew. May apply texturing compound and primer to walls and ceiling preparatory to final finishing, using brushes, roller, or spray gun. May countersink nails or screws below surface of wall prior to applying sealing compound, using hammer or screwdriver.

Installs, operates, inspects, maintains, repairs and services radios, televisions, videos, recording voice, sound, nurse calls, emergency calls, microwave and visual production and reproduction apparatus, equipment and appliances used for domestic, commercial, educational and entertainment purposes. Performs all installation and erection of equipment, apparatus or appliance, cables and/or wire, emergency power (batteries) and all directly related work which becomes an integral part of the telecommunication and/or telecommunication related systems repair and service maintenance work of Telecommunications systems and devices including, but not limited to, Private Branch Exchanges (PBX-PABX), Key equipment and associated devices, PCM, T1, and/or telephone related systems, customer-owned or employer-owned. Performs the installation, repair, maintenance and operation of hold-up alarms, burglar alarms, surveillance systems, CCTV, CATV, card access, and/or any local area network system associated with computer installation.

Supplies and mixes construction materials for Tile Setter (construction) 861.381-054, applies grout, and cleans installed tile. Moves tiles, tile setting tools, and work devices from storage area to installation site manually or using wheelbarrow. Mixes mortar and grout according to standard formulas and request from Tile Setter (construction), using bucket, water hose, spatula, and portable mixer. Supplies Tile Setter (construction) with mortar, using wheelbarrow and shovel. Applies grout between joints of installed tile, using grouting trowel. Removes excess grout from tile joints with wet sponge and scrapes corners and crevices with trowel. Wipes surface of tile after grout has set to remove grout residue and polish tile, using nonabrasive materials. Cleans installation site, mixing and storage areas, and installation machines, tools, and equipment, using water and various cleaning tools. Stores tile setting materials, machines, tools, and equipment. May apply caulk, sealers, acid, steam, or related agents to caulk, seal, or clean installed tile, using various application devices and equipment. May modify mixing, grouting, grinding, and cleaning procedures according to type of installation or material used. May assist Tile Setter (construction) to position and secure metal lath, wire mesh, or felt paper prior to installation of tile. May cut marked tiles to size, using power saw or tile cutter.

Applies tile to walls, floors, ceilings, and promenade roof decks, following design specifications. Examines blueprints, measures and marks surfaces to be covered, and lays out work. Measures and cuts metal lath to size for walls and ceilings with tin snips. Tacks lath to wall and ceiling surfaces with staple gun or hammer. Spreads plaster base over lath with trowel and levels plaster to specified thickness, using screed. Spreads concrete on sub floor with trowel and levels it with screed. Spreads mastic or other adhesive base on roof deck, using serrated spreader to form base for promenade tile. Cuts and shapes tile with tile cutters and biters. Positions tile and taps it with trowel handle to affix tile to plaster or adhesive base. May be designated according to type of work done as Roof-Promenade-Tile Setter (construction).

Designs single- or multiple-edged machine cutting tools, such as broaches, milling-machine cutters, and drills, and related jigs, dies, and fixtures: Studies specifications, engineering blueprints, tool orders, and shop data and confers with engineering and shop personnel to resolve design problems related to material characteristics, dimensional tolerances, service requirements, manufacturing procedures, and cost. Applies algebraic and geometric formulas and standard tool engineering data to develop tool configuration. Selects standard items, such as bushings and tool bits, to incorporate into tool design. Draws preliminary sketches and prepares layout and detail drawings, using standard drafting tools and equipment or computer-assisted design/drafting equipment and software. Modifies tool designs according to trial or production service data to improve tool life or performance.

Analyzes specifications, lays out metal stock, sets up and operates machine tools, and fits and assembles parts to fabricate and repair metalworking dies, cutting tools, jigs and fixtures, gauges, and machinists' hand tools, applying knowledge of tool and die design and construction, shop mathematics, metal properties, and layout, machining, and assembly procedures. Studies specifications, such as blueprints, sketches, models, or descriptions, and visualizes product to determine materials required and machines to be used to fabricate parts. Computes dimensions, plans layout, and determines assembly method and sequence of operations. Measures, marks, and scribes metal stock for machining [Lay-Out Worker (machine shop) 600.281-018]. Sets up and operates machine tools, such as lathes, milling machine, shaper, and grinder, to machine parts, and verifies conformance of machined parts to specifications [Tool-Machine Set-Up Operator (machine shop) 601.280-054]. Lifts machined parts manually or using hoist, and positions and secures parts on surface plate or worktable, using devices, such as vises, V-blocks, and angle plates. Smoothes flat and contoured surfaces, using scrapers, abrasive stones, and power grinders, and fits and assembles parts together and into assemblies and mechanisms, using hand tools. Verifies dimensions, alignments, and clearances, using measuring instruments, such as dial indicators, gauge blocks, thickness gauges, and micrometers. Heat-treats tools or parts [Heat Treater (heat treating) II 504.682-018]. May connect wiring and hydraulic lines to install electrical and hydraulic components. May examine standard or previously used dies, tools, and jigs and fixtures, and recommend design modifications regarding construction and function of part. May develop specifications from general descriptions for specialty tools and draw or sketch design of product. May specialize in repair work and be designated Tool-And-Die Repairer (machine shop).

Diagnoses mechanical failures and repairs tractors and tractor components according to manuals, factory specifications, and knowledge of engine performances, using hand tools, power tools, and testing instruments. Attaches compression, ignition, and timing test instruments to certain parts of tractor, using clamps and hand tools. Starts engine dials and reads meters and gauges of testing equipment to diagnose engine malfunction. Removes and disassembles engine, transmission, and clutches, using hoists, jacks, and mechanic's hand tools. Inspects parts for damage, and verifies dimensions and clearances of parts for conformance to factory specifications, using gauges, such as calipers, and micrometers. Replaces or repairs worn or damaged parts. Grinds valves, relines and adjusts brakes, tightens body bolts, aligns wheels, and tunes engine. May weld defective body or frame parts.

Trims trees to clear right-of-way for communications lines and electric power lines to minimize storm and short-circuit hazards. Climbs trees to reach branches interfering with wires and transmission towers, using climbing equipment. Prunes treetops, using saws or pruning shears. Repairs trees damaged by storm or lightning by trimming jagged stumps and painting them to prevent bleeding of sap. Removes broken limbs from wires, using hooked extension pole. Fells trees interfering with power service, using chain saw (portable power saw). May work from bucket of extended truck boom to reach limbs.

Repairs, installs, and adjusts hydraulic and electromagnetic automatic lift mechanisms used to raise and lower automobile windows, seats, and tops. Repairs and replaces automobile leaf springs. Removes and replaces defective mufflers and tailpipes from automobiles. Repairs and rebuilds clutch systems. Repairs, overhauls, and adjusts automobile brake systems. Installs and repairs automotive air-conditioning units. Rebuilds, repairs, and tests automotive injection units. Converts vehicle fuel systems from gasoline to butane gas operations, and repairs and services operating butane fuel units. Aligns and repairs wheels, axles, frames, torsion bars, and steering mechanisms of automobiles.

Welds metal components together to fabricate or repair products, such as machine parts, plant equipment, mobile homes, motors, and generators, according to layouts, blueprints, or work orders, using brazing and variety of arc and gas welding equipment: Welds metal parts together, using both gas welding [Welder, Gas (welding)] or brazing [Brazer, Assembler (welding)] and any combination of arc welding processes [Welder, ARC (welding)]. Performs related tasks, such as thermal cutting and grinding. Repairs broken or cracked parts, fills holes, and increases size of metal parts. Positions and clamps together components of fabricated metal products preparatory to welding. May locate and repair cracks in industrial engine cylinder heads, using inspection equipment and gas torch, and be designated Repairer, Cylinder Heads (welding). May perform repairs only and be designated Welder, Repair (welding). May be required to pass employer performance tests or standard tests to meet certification standards of governmental agencies or professional and technical associations.

Lays out, fits, and welds fabricated, cast, and forged components to assemble structural forms, such as machinery frames, tanks, pressure vessels, furnace shells, and building and bridge parts, according to blueprints and knowledge of welding and metallurgy. Selects equipment and plans layout, assembly, and welding, applying knowledge of geometry, physical properties of metal machining weld shrinkage, and welding techniques. Lays out, positions, aligns, and fits components together. Bolts, clamps, and tack-welds parts to secure in position for welding [Welder, TACK (welding)]. Sets up equipment and welds parts, using arc, gas-shielded arc, submerged arc, or gas welding equipment [Welder, Combination (welding)]. May assemble parts by bolting and riveting. May repair products by dismantling, straightening, reshaping, and reassembling parts, using cutting torch, straightening press, and hand tools, and be designated Welder, Structural Repair (welding). May specialize in using one welding process and be designated Welder-Fitter, Arc (welding); Welder-Fitter, Gas (welding). May specialize in fitting and welding components of metal tools, dies, and fixtures and be designated Welder, Tool And Die (welding).

Conducts experiments and tests and evaluates data to assist welding engineering personnel in development and application of new or improved welding equipment; welding techniques, procedures, and practices; and specifications for material heat treating. Assists engineering personnel in testing and evaluating welding equipment, metals, and alloys. Evaluates data and conducts experiments to develop application of new equipment or improved techniques, procedures, or practices. Recommends adoption of new developments and applications to engineering personnel and demonstrates practicability of recommendations. Inspects welded joints and conducts tests to ensure welds meet company standards, national code requirements, and customer job specifications. Records inspection and test results and prepares and submits reports to welding engineering personnel. Conducts certification tests for qualification of personnel with national code requirements.

Assesses youth job readiness and personal growth goals; assist youth with job search; maintains youth case records; program data and other statistical records. Monitors youth on-the-job performance. Establishes agreements with businesses to provide placement and on-the-job training; establishes agreements with non-profit agencies or post secondary institutions to provide necessary life skills to youth.