2nd category

Characteristics of works. Manual oxygen cutting and cutting with petrol-cutting and kerosene-cutting machines of light-weight and heavy steel scrap. Manual arc, plasma, gas, automatic and semi-automatic welding of simple parts, assemblies and structures made of carbon steels. Oxygen and plasma rectilinear and curvilinear cutting in the lower and vertical position of a welded seam with metal, as well as simple and medium complexity parts made of carbon steels by manual marking, on portable stationary and plasma cutting machines. Tacking parts, products, structures in all spatial positions. Preparation of products, assemblies and connections for welding. Cleaning seams after welding and cutting. Ensuring protection of the reverse side of the weld during welding in shielding gases. Surfacing of simple details. Elimination of shells and cracks in simple parts, assemblies, castings. Heating of structures and parts during straightening. Reading simple drawings. Preparation of gas cylinders for work. Maintenance of portable gas generators.

Must know: device and principle of operation of serviced electric welding machines and apparatus for arc welding of alternating and direct current, gas welding and gas cutting equipment, gas generators, automatic and semi-automatic electric welding machines, oxygen and acetylene cylinders, reducing devices and welding torches; rules for using the applied burners, reducers, cylinders; methods and basic techniques of tacking; forms of seam cutting for welding; rules for ensuring protection when welding in shielding gas; types of welded joints and types of seams; rules for preparing the edges of products for welding; types of grooves and designation of welds in the drawings; basic properties of electrodes used in welding, welding metal and alloys, gases and liquids; permissible residual gas pressure in cylinders; purpose and brand of fluxes used in welding; purpose and conditions for the use of instrumentation; causes of defects in welding and ways to prevent them; characteristics of the gas flame; scrap dimensions according to the state standard.

Work examples

1. Tanks of transformers - eyeliner for automatic welding.
2. Cradle beams, sprung beams and bolsters of all-metal cars and cars of electric sections - welding of reinforcing squares, guides and centering rings.
3. Rolled beams - welding of points, capturing lanes along the marking.
4. Guard rail shoes - cutting on the ship.
5. Strikers and templates of steam hammers - surfacing.
6. Box bolts, column bolts and center bolts - surfacing of working places.
7. Side awning frame details - tacking and welding.
8. Details of metal containers - hot straightening.
9. Diaphragms of frames of platforms and metal gondola cars - welding of ribs.
10. Foals - welding.
11. Rivets - cutting heads.
12. Frames and details of brake pads of freight cars and window frames passenger cars- welding.
13. Casings and fences, lightly loaded units of agricultural machines - welding.
14. Casings of oil pumps and filters of automobiles - surfacing of shells in castings.
15. Header brackets, brake control rollers - welding.
16. Brackets for attaching the muffler to the car frame - surfacing cracks.
17. Mounting brackets for mining equipment - welding.
18. Dump truck subframe brackets - welding.
19. Undercar lighting trough covers - welding.
20. Angular sheets of the inner and outer sheathing of the tram - welding of cuts.
21. Steel scrap for charge - cutting.
22. Linings and linings spring - welding.
23. Small flasks - welding ears.
24. Flasks steel of the small sizes - welding of ears.
25. Small steel and cast iron castings - elimination of shells in unworked places by melting.
26. Pallets for machines - welding.
27. Profits and letniki on steel castings up to 300 mm thick - cutting.
28. Frames of tanks of transformers - welding.
29. Bed mattress frames, armored and rhombic nets - welding.
30. Reception pipes - fusing of safety nets.
31. Car fender reinforcements - welding.
32. Clamps hydraulic mechanisms of dump trucks - welding.
33. Non-responsible foundations, small nodes made of low-carbon and low alloy steels- semi-automatic welding on the rack.

3rd category

Characteristics of works. Manual arc, plasma, gas welding, automatic and semi-automatic welding of simple parts, assemblies and structures made of structural steels, non-ferrous metals and alloys and of medium complexity of parts, assemblies, structures and pipelines made of carbon steels in all positions of the weld, except for the ceiling. Oxy-plasma straight and curved cutting in various positions of metals, simple and medium complexity of parts made of carbon and alloy steels, non-ferrous metals and alloys by manual marking on portable, stationary and plasma cutting machines in all positions of the weld. Manual oxygen cutting and cutting with petrol-cutting and kerosene-cutting devices to specified dimensions with the release of non-ferrous metal waste and with the preservation or cutting out of machine components and parts. Manual arc air planing of simple and medium complexity parts from various steels, cast iron, non-ferrous metals and alloys in various positions. Surfacing of shells and cracks in parts, assemblies and castings of medium complexity. Preliminary and concomitant heating when welding parts in compliance with the specified mode. Reading drawings of varying complexity of parts, assemblies and structures.

Must know: installation of serviced electric welding and plasma cutting machines, gas welding equipment, automatic machines, semi-automatic devices and a plasma torch; requirements for the weld and surfaces after air planing; methods for selecting electrode grades depending on steel grades; properties and significance of electrode coatings; the structure of the weld; methods of their testing and types of control; rules for preparing parts and assemblies for welding and welding; rules for selecting the metal heating mode depending on the brand of metal and its thickness; causes internal stresses and deformations in the welded products and measures for their prevention; basic technological methods of welding and surfacing of parts made of various steels, cast iron, non-ferrous metals and alloys; cutting mode and gas consumption during oxygen and gas-electric cutting.

Work examples

1. Fittings made of tin bronzes and silicon brass under test pressure up to 1.6 MPa (15.5 atm) - surfacing of defects.
2. Balancers for spring suspension of the rolling stock - manual cutting according to the marking.
3. Beater and cutting drums, front and rear axles of a tractor trailer, drawbars and frames of a combine and header, harvester augers, rakes and reels - welding.
4. Sidewalls, transition platforms, steps, frameworks and coverings of railway cars - welding.
5. Raid buoys and barrels, artillery shields and pontoons - welding.
6. Crankshafts of engines and camshafts of automobiles - welding of defective semi-finished forgings with special steels.
7. Shafts of electrical machines - fusing necks.
8. Silencers - welding.
9. Internal combustion engines (fuel and air systems) - welding.
10. Car parts (oil heater neck, box crankcase, crankcase cover) - defect build-up.
11. Details from sheet steel up to 60 mm thick - manually cut according to the marking.
12. Freight car body frame parts - welding.
13. Details of the rocker mechanism - welding of holes.
14. Bronze brake discs - surfacing shells.
15. Workpieces for manual or automatic arc welding - cutting without bevel.
16. Frameworks for boards and control panels - welding.
17. Track rollers - welding.
18. Complete casings, heating boilers - welding.
19. Casings of elastic couplings - welding.
20. Truck brake pads, casings, rear axle shafts - welding.
21. Structures, components, parts for gun mounts - welding.
22. Cases of electrical explosive equipment - welding.
23. Cranes load-lifting - surfacing of slopes.
24. Dump truck bodies - welding.
25. Rear bridges of cars - surfacing of shells in castings.
26. Facing of a car radiator - welding of cracks.
27. Level regulator floats (fittings) - welding.
28. Profits, sprues for castings of complex configuration with a thickness of over 300 mm - cutting.
29. Projectors - welding to the ship's hull.
30. The frames of the drawbars of a steam locomotive - surfacing.
31. Frame profile windows of the driver's cabin - welding.
32. Pantograph frames - welding.
33. Locomotive frames - welding of conductors, flooring sheets, parts.
34. Tanks for non-flammable liquids and rolling stock brake systems - welding.
35. Shaped cutters and simple dies - welding.
36. Bulkhead shaft seals - fusing of the body and pressure sleeve.
37. Machine beds of small sizes - welding.
38. Racks, bunker grates, transition platforms, stairs, railings, decking, boiler lining - welding.
39. Rear wheel hubs, rear axle and other car parts - malleable iron brazing.
40. Joints and grooves of sections, partitions of decks, partitions - automatic welding on a rack.
41. Non-pressure pipelines for water (except for main ones) - welding.
42. Pipelines of external and internal networks of water supply and heat supply - welding in workshop conditions.
43. Ventilation pipes - welding.
44. Copper exhaust pipes - welding.
45. Chimneys up to 30 m high and ventilation pipes made of sheet carbon steel - welding.
46. Connected fire tubes in boilers and superheater tubes - welding.
47. General purpose pipes - bevel cutting.
48. Brake line pipes - welding.
49. Automobile tanks - automatic welding.
50. Spheres of gasifiers brass (open) - surfacing.
51. Gears - welding of teeth.

4th category

Characteristics of works. Manual arc, plasma and gas welding of medium complexity of parts, assemblies, structures and pipelines made of structural steels, cast iron, non-ferrous metals and alloys and complex parts of assemblies, structures and pipelines made of carbon steels in all spatial positions of the weld. Manual oxygen, plasma and gas straight and shaped cutting and cutting with petrol and kerosene cutting machines on portable, stationary and plasma cutting machines, in various positions of complex parts from various steels, non-ferrous metals and alloys according to marking. Oxygen flux cutting of parts made of high-chromium and chromium-nickel steels and cast iron. Oxygen cutting of ship objects afloat. Automatic and mechanical welding of medium complexity and complex devices, assemblies, pipeline structures made of various steels, cast iron, non-ferrous metals and alloys. Automatic welding of critical complex building and technological structures operating in difficult conditions. Manual electric arc air planing of complex parts from various steels, cast iron, non-ferrous metals and alloys in various positions. Welding of cast iron structures. Surfacing of defects in complex parts of machines, mechanisms, structures and castings under machining and test pressure. Hot straightening of complex structures. Reading drawings of various complex welded metal structures.

Must know: the device of various electric welding and gas cutting equipment, automatic and semi-automatic devices, features of welding and electric arc planing on alternating and direct current; the basics of electrical engineering within the scope of the work performed; types of defects in welds and methods for their prevention and elimination; basics of metal welding; mechanical properties of welded metals; principles of selection of the mode of welding by instruments; brands and types of electrodes; methods for obtaining and storing the most common gases: acetylene, hydrogen, oxygen, propane-butane, used in gas welding; gas cutting process of alloy steel.

Work examples

1. Equipment, vessels and containers made of carbon steel, operating without pressure - welding.
2. Apparatus, vessels and containers made of carbon steel, operating without pressure - welding.
3. Shut-off pipeline fittings made of non-ferrous metals and alloys under test pressure over 1.6 to 5.0 MPa (over 15.5 to 48.4 atm) - deposition of defects.
4. Tanks of transformers - welding of branch pipes, welding of boxes for terminals, boxes of coolers, current settings and tank covers.
5. Rudder stocks, propeller shaft brackets - hardfacing.
6. Cylinder blocks of car engines - surfacing of shells in castings.
7. Crankshafts - surfacing of necks.
8. Inserts bronze and brass - surfacing on steel bearings.
9. Headset and burners of boilers - welding.
10. Details from sheet stainless steel, aluminum or copper alloys - gas-electric cutting with beveled edges.
11. Details from sheet steel with a thickness of more than 60 mm - manual cutting according to the marking.
12. Cast iron parts - welding, welding with and without heating.
13. Details and assemblies made of non-ferrous metals - welding followed by pressure testing.
14. Carriage retarders - welding and welding of knots in operational conditions.
15. Cast iron gear teeth - hardfacing.
16. Thin-walled products made of non-ferrous alloys (air cooler covers, end shields, fans of turbogenerators) - welding with brass or silumin.
17. Large cast iron products: frames, pulleys, flywheels, gears - surfacing of shells and cracks.
18. Chambers of impellers of hydraulic turbines - welding and surfacing.
19. Frames of industrial furnaces and boilers - welding.
20. Crankcases of large motors and mechanical transmission of diesel locomotives - welding.
21. Lower crankcases - welding.
22. Coils of poles of electrical machines from strip copper - welding and welding of jumpers.
23. Gas exhaust manifolds and pipes - welding.
24. Control rings for hydraulic turbines - welding and surfacing.
25. Structures of blast furnaces (casings, air heaters, gas pipelines) - cutting with beveled edges.
26. Housings and bridges of the driving wheels of the harvester - welding.
27. Cases of compressors, low and high pressure cylinders of air compressors - cracking.
28. Rotor cases up to 3500 mm in diameter - welding.
29. Turbine stop valve bodies up to 25,000 kW - welding.
30. Cases of brush holders, reverse segments, rotors of electric motors - hardfacing.
31. Fastening and supports for pipelines - welding.
32. Brackets and fastenings for locomotive pivot bogies - welding.
33. Sheets of large thicknesses (armor) - welding.
34. Masts, drilling and operational towers - welding in workshop conditions.
35. Aluminum furniture - welding.
36. Plates fundamental large electrical machines - welding.
37. Struts, axle shafts of aircraft landing gear - welding.
38. Heaters - welding of a holder, a hot-water pipe with a holder, a cone, rings and flanges.
39. Bearings and bushings, box, drawbar - fusing along the frame and fusing cracks.
40. Pneumatic hammer pistons - shells and cracks.
41. Dust and gas pipelines, fuel supply units and electrostatic precipitators - welding.
42. Spool frames, pendulums - welding.
43. Porthole frames made of aluminum alloys - welding.
44. Frames of conveyors - welding.
45. Air trolleybus tanks - welding.
46. Reservoirs for petroleum products with a capacity of less than 1000 cubic meters. m - welding.
47. Rail butt joints - welding in operational conditions.
48. Rails and prefabricated crosses - welding ends.
49. Grids metal unary and twisted for pulp and paper production - the soldering of the ends by silver solder.
50. Crusher beds - welding.
51. Beds and electrical machines welded-cast - welding.
52. The beds of large machines are cast iron - welding.
53. Beds of working stands of rolling mills - welding.
54. Air-cooled turbogenerator stators - welding.
55. Tubes for sensors with a radioactive isotope - welding.
56. Pipe elements of boilers, armor plates, etc. - hot editing.
57. Pipelines of external and internal networks of water supply and heat supply - welding on installation.
58. Pipelines of external and internal low-pressure gas supply networks - welding in workshop conditions.
59. Technological pipelines of the 5th category - welding.
60. Pipes boring - welding of couplings.
61. Half-timbered houses, communications, lanterns, runs, monorails - welding.
62. Milling cutters and dies are complex - welding and surfacing of a quick cut and hard alloy.
63. Brass refrigerators - welding seams for hydrotesting at pressures up to 2.5 MPa (24.2 atm).
64. Cylinders of blocks of motor vehicles - fusing of shells.
65. Automobile tanks - welding.
66. Balls, floats and tanks made of special aluminum alloys - welding.

5th category

Characteristics of works. Manual arc, plasma and gas welding of various complexity of devices, parts, assemblies, structures and pipelines made of various steels, cast iron, non-ferrous metals and alloys, designed to work under dynamic and vibration loads and under pressure. Manual arc and plasma welding of complex building and technological structures operating in difficult conditions. Oxygen and plasma straight and horizontal cutting of complex parts from various steels, non-ferrous metals and alloys according to manual marking with cutting edges for welding, including the use of special fluxes from various steels and alloys. Oxygen cutting of metals under water. Automatic and mechanical welding of complex devices, assemblies, structures and pipelines made of various steels, non-ferrous metals and alloys. Automatic welding of building and technological structures operating under dynamic and vibration loads. Mechanized welding of complex building and technological structures operating in difficult conditions. Manual electric arc air planing of complex parts from various steels, cast iron, non-ferrous metals and alloys in various positions. Welding of structures in block design in all spatial positions of the weld. Welding and surfacing of cracks and cavities in thin-walled products and in products with hard-to-reach places for welding. Heat treatment with a gas burner of welded joints after welding. Reading drawings of varying complexity of welded spatial metal structures.

Must know: electrical circuits and designs of various welding machines, automatic machines, semi-automatic devices and power supplies; technological properties of welded metals, including high-alloy steels, as well as deposited metal and metal subjected to planing; selection of the technological sequence for applying welds; the influence of heat treatment on the properties of the weld, the rules for cutting metals under water.

Work examples

1. Blast furnace embrasures - surfacing of shells and cracks.
2. Equipment and vessels made of carbon steels working under pressure and alloy steels working without pressure - welding.
3. Fittings of open-hearth furnaces - welding during the repair of existing equipment.
4. Load-bearing fittings reinforced concrete structures(foundations, columns, ceilings, etc.) - welding.
5. Pipeline shut-off fittings made of tin bronze and silicon brass - surfacing under test pressure over 5.0 MPa (48.4 atm).
6. Tanks of unique powerful transformers - welding, including welding of lifting hooks, jacking brackets, stainless plates operating under dynamic loads.
7. Beams and traverses of crane trucks and balancers - welding.
8. Span beams of overhead cranes with a lifting capacity of less than 30 tons - welding.
9. Center beams, buffer beams, pivot beams, locomotive and wagon bogie frames - welding.
10. Cylinders, caps, spheres operating in vacuum - welding.
11. Boiler drums with pressure up to 4.0 MPa (38.7 atm) - welding.
12. Blocks of building and technological structures made of sheet metal (air heaters, scrubbers, casings of blast furnaces, separators, reactors, flues of blast furnaces, etc.) - welding.
13. Cylinder blocks and water collectors of products - welding.
14. Large crankshafts - welding.
15. Lead baths - welding.
16. Gas holders and tanks for oil products with a volume of 5000 cubic meters. m and more - welding in workshop conditions.
17. Gas and oil products pipelines - welding on the rack.
18. Details of gas welding equipment - silver soldering.
19. Structural details of complex configuration - cutting with cutting edges for welding without additional machining.
20. Parts of machines, mechanisms and structures forged, stamped and cast (propellers, turbine blades, engine cylinder blocks, etc.) - defect surfacing.
21. Details of particularly complex machines and mechanisms (charging apparatuses of blast furnaces, propellers, turbine blades, rolls of rolling mills, etc.) - surfacing with special, hard, wear-resistant and corrosion-resistant materials.
22. Spherical and spherical bottoms - cutting oblique holes without subsequent machining.
23. Red copper coils - welding.
24. Caissons for open-hearth furnaces operating at high temperatures - welding.
25. Caissons of open-hearth furnaces (hot repair) - internal welding.
26. Manifolds of complex configuration of 20 or more parts made of stainless and heat-resistant steel with a check for macrostructure and radiography - welding.
27. Columns, bunkers, truss and truss trusses, beams, flyovers, etc. - welding.
28. Stainless steel bellows expansion joints - soldered.
29. Structures of radio masts, TV towers and power transmission line supports - welding in stationary conditions.
30. Cases of cutting, loading machines, coal combines and mine electric locomotives - welding.
31. Head bodies, traverses, bases and other complex assemblies of presses and hammers - welding.
32. Cases, covers, tees, knees, cast iron cylinders - surfacing of defects.
33. Rotor housings with a diameter of more than 3500 mm - welding.
34. Stop valve housings for turbines with a capacity of more than 25,000 kW - welding.
35. Covers, stators and facing of blades of hydraulic turbines - welding.
36. Masts, drilling and operational towers - welding during installation.
37. Bases from high-alloyed drill pipes for drilling rigs and three-diesel drives - welding.
38. Castings of aluminum and bronze, complex and large - fusing of shells and cracks.
39. Support plates for walking excavators - welding.
40. Compression molds are complex - welding in hard-to-reach places.
41. Frames and components of cars and diesel engines - welding.
42. Pivot and diesel locomotive frames - welding.
43. Reservoirs for oil products with a capacity of 1000 and less than 5000 cubic meters. m - welding on installation.
44. Rotors of electrical machines - welding of short-circuited rings, rods, welding.
45. Beds are complex, aprons of large lathes - welding, cracking.
46. Joints of reinforcement outlets of elements of load-bearing prefabricated reinforced concrete structures - welding.
47. Tubes for impulse control and automation systems - welding.
48. Pipe elements of steam boilers with pressure up to 4.0 MPa (38.7 atm) - welding.
49. Pipelines of external and internal low-pressure gas supply networks - welding at installation.
50. Pipelines of external and internal gas supply networks of medium and low pressure - welding during installation and in workshop conditions.
51. Technological pipelines of III and IV categories (groups), as well as pipelines of steam and water of III and IV categories - welding.
52. Lead pipes - welding.
53. Units of under-engine frames and cylinders of shock absorbers of aircraft landing gear - welding.
54. Brass refrigerators - welding of seams under hydrotesting under pressure over 2.5 MPa (24.2 atm).
55. Engine cylinders - fusing of inner and outer jackets.
56. Tires, tapes, compensators for them from non-ferrous metals - welding.

6th category

Characteristics of works. Manual arc, plasma and gas welding of particularly complex devices, parts, assemblies, structures and pipelines made of various steels, cast iron, non-ferrous metals and alloys, designed to work under dynamic and vibration loads and under high pressure. Manual arc and gas-electric welding of building and technological structures operating under dynamic and vibration loads, and structures of complex configuration. Automatic welding of various structures from alloyed special steels, titanium and other alloys on automatic machines of a special design, multi-arc, multi-electrode automatic machines and automatic machines equipped with television, photoelectronic and other special devices, on automatic manipulators (robots). Mechanized welding of apparatus, assemblies, pipeline structures, building and technological structures operating under dynamic and vibration loads, when performing welds in the overhead position and on a vertical plane. Welding of experimental structures from metals and alloys with limited weldability, as well as from titanium and titanium alloys. Welding of complex structures in block design in all spatial positions of the weld.

Must know: variety of titanium alloys, their welding and mechanical properties; kinematic diagrams of automata and semiautomatic devices, basic device electronic circuits management; rules for training robots and rules for working with robotic systems; types of corrosion and factors causing it; methods of special tests of welded products and the purpose of each of them; main types of heat treatment of welded joints; bases on metallography of welded seams.

Work examples

1. Span beams of overhead cranes with a lifting capacity of 30 tons and more - welding.
2. Beams of working platforms of open-hearth shops, structures of bunker and unloading racks of metallurgical enterprises, crane beams for heavy-duty cranes, booms of walking excavators - welding.
3. Boiler drums with pressure over 4.0 MPa (38.7 atm) - welding.
4. Air separation units of oxygen workshops - welding of non-ferrous metal parts.
5. Gas holders and tanks for oil products with a volume of 5000 cubic meters. m and more - welding during installation.
6. Main gas pipelines - welding at installation.
7. Parts and assemblies made of non-ferrous metals operating under pressure over 4.0 MPa (38.7 atm) - welding.
8. Capacities and coatings spherical and drop-shaped - welding.
9. Tanks, caps, spheres and vacuum pipelines - welding.
10. Drill pipe locks and couplings - double seam welding.
11. Wheels working gas turbine compressors, steam turbines, powerful blowers - welding of blades and blades.
12. Ammonia synthesis columns - welding.
13. Structures made of light aluminum-magnesium alloys - welding.
14. The design of radio masts, TV towers and power transmission line supports - welding during installation.
15. Structures made of low-magnetic steels - welding.
16. Steam turbine boxes - welding and welding of shells.
17. Stator housings of large hydrogen- and hydrogen-water-cooled turbogenerators - welding.
18. Cases of heavy laser engines and presses - welding.
19. Steam boilers - bottom dressing, welding of critical units with a one-sided butt weld.
20. Paws and flutes of drilling bits, drilling steam conductors - welding.
21. Blades of rotors and stators of turbines - soldering.
22. Oil and gas pipelines - welding during the elimination of gaps.
23. Piping of oil and gas wells and wells of contour filling - welding.
24. Wiring of impulse turbines and boilers - welding.
25. Tanks and structures made of two-layer steel and other bimetals - welding.
26. Reinforcing bars of reinforced concrete structures of detachable forms - welding.
27. Span structures of metal and reinforced concrete bridges - welding.
28. Pipe elements of steam boilers with pressure over 4.0 MPa (38.7 atm) - welding.
29. Pressure pipelines, spiral chambers and impeller chambers of hydroelectric turbines - welding.
30. Pipelines of external gas supply networks of medium and high pressure - welding during installation.
31. Technological pipelines of categories I and II (groups), as well as steam and water pipelines of categories I and II - welding.

\Typical job description Electric and gas welder of the 2nd category

Job description of the Electric and gas welder of the 2nd category

Position: Electric and gas welder of the 2nd category
Subdivision: _________________________

1. General Provisions:

Subordination:
• The electric and gas welder of the 2nd category is directly subordinate to ..........................
• The electric and gas welder of the 2nd category follows the instructions .............................................. .........

(instructions of these employees are carried out only if they do not contradict the instructions of the immediate supervisor).

Substitution:

• Electric and gas welder of the 2nd category replaces .............................................. ................................................
• Replaces electric and gas welder of the 2nd category .............................................. ...................................

Recruitment and dismissal:
The electric and gas welder is appointed to the position and dismissed by the head of the department in agreement with the head of the department.

2. Qualification requirements:

Must know:

• device and principle of operation of serviced electric welding machines and apparatus for arc welding of alternating and direct current, gas welding and gas cutting equipment, gas generators, automatic and semi-automatic electric welding machines, oxygen and acetylene cylinders, reducing devices and welding torches
• rules for using the burners, reducers, cylinders used
• methods and basic techniques of tacking
• forms of cutting a seam for welding
• protection rules for gas-shielded welding
• types of welded joints and types of seams
• rules for preparing the edges of products for welding
• types of grooves and designation of welds in the drawings
• main properties of electrodes used in welding, welding metal and alloys, gases and liquids
• permissible residual gas pressure in cylinders
• purpose and brand of fluxes used in welding
• purpose and conditions for the use of instrumentation
• causes of defects in welding and ways to prevent them
• gas flame characteristics
• scrap dimensions according to the state standard.

3. Job responsibilities:

• Manual oxygen cutting and cutting with petrol-cutting and kerosene-cutting machines of light-weight and heavy steel scrap.
• Manual arc, plasma, gas, automatic and semi-automatic welding of simple parts, assemblies and structures made of carbon steels.
• Oxygen and plasma rectilinear and curvilinear cutting in the lower and vertical position of a welded seam with metal, as well as simple and medium complexity parts made of carbon steels by manual marking, on portable stationary and plasma cutting machines.
• Tacking parts, products, structures in all spatial positions.
• Preparation of products, assemblies and connections for welding.
• Cleaning seams after welding and cutting.
• Ensuring protection of the reverse side of the weld during welding in shielding gases.
• Surfacing of simple details.
• Elimination of shells and cracks in simple parts, assemblies, castings.
• Heating of structures and parts during straightening.
• Reading simple drawings.
• Preparation of gas cylinders for work.
• Maintenance of portable gas generators.

page 1 Job description Electric and gas welder
p. 2 Job description Electric and gas welder

4. Rights

• The electric and gas welder has the right to give instructions to his subordinate employees, tasks on a range of issues included in his functional duties.
• The electric and gas welder has the right to control the fulfillment of production tasks, the timely execution of individual orders by his subordinate employees.
• The electric and gas welder has the right to request and receive the necessary materials and documents related to the issues of his activities and the activities of employees subordinate to him.
• The electric and gas welder has the right to interact with other services of the enterprise on production and other issues that are part of his functional duties.
• The electric and gas welder has the right to get acquainted with the draft decisions of the enterprise management regarding the activities of the Division.
• The electric and gas welder has the right to propose for consideration by the manager proposals for improving the work related to the duties provided for in this Job Description.
• The electric and gas welder has the right to submit proposals for the consideration of the head of the promotion of distinguished employees, the imposition of penalties on violators of production and labor discipline.
• The electric and gas welder has the right to report to the manager on all identified violations and shortcomings in connection with the work performed.

5. Responsibility

• The electric and gas welder is responsible for improper performance or non-performance of his official duties provided for by this job description - within the limits determined by the labor legislation of the Russian Federation.
• The electric and gas welder is responsible for violation of the rules and regulations governing the activities of the enterprise.
• When transferring to another job or dismissal from the position, the Electric and Gas Welder is responsible for the proper and timely delivery of cases to the person taking up this position, and in the absence of such, to the person replacing him or directly to his supervisor.
• The electric and gas welder is liable for offenses committed in the course of his activities - within the limits determined by the current administrative, criminal and civil legislation of the Russian Federation.
• The electric and gas welder is responsible for causing material damage - within the limits determined by the current labor and civil legislation of the Russian Federation.
• The electric and gas welder is responsible for compliance with the current instructions, orders and orders for the conservation trade secret and confidential information.
• The electric and gas welder is responsible for compliance with the internal regulations, safety and fire safety rules.

This job description was developed in accordance with (name, number and date of the document)

Head of structural

ELECTRIC WELDER

2nd category
Should be able to:
1. Perform manual arc and plasma welding of simple parts, assemblies and structures made of carbon steels in the lower, vertical positions of the weld.
2. Surfacing of simple non-critical parts.
3. Heat parts and products before welding.
4. Perform tacking of parts and products and structures in all spatial positions of the weld.
Must know:
1. The principle of operation of electric welding machines and devices for arc welding of alternating and direct current.
2. Electrical maintenance rules welding machines.
3. The procedure for preparing the edges of products for welding.
4. Types of cuts.
5. Main properties of the applied electrodes, welded material and alloys.
6. Purpose and conditions for the use of instrumentation.
7. Causes of defects in welding and ways to prevent them.
8. General information about welding in shielding gas.
9. The device of burners for welding with a non-consumable electrode in a protective gas.

3rd category
Should be able to:
1. Perform manual arc and plasma welding of parts, assemblies and structures of medium complexity from carbon steels and simple parts of their structural steels, non-ferrous metals and alloys in all spatial positions of the weld, except for the ceiling.
2. Perform manual arc oxygen cutting, planing of parts of medium complexity from low-carbon, alloyed, special steels, cast iron and non-ferrous metals in various positions.
3. Surfacing of worn simple tools, parts made of carbon and structural steels.
4. Comply with labor safety requirements.
Must know:
1. The device used for electric welding machines and welding machines.
2. Requirements for the weld and surfaces after oxygen cutting (planing).
3. Properties and significance of electrode coatings.
4. The main types of control of welds.
5. Methods for selecting electrode grades depending on steel grades.
6. Causes of internal stresses and deformations in welded products, measures to prevent them.
7. Rules for organizing labor at your workplace.

ELECTRIC GAS WELDER

3rd category
Should be able to:
1. Perform manual arc, plasma, gas, automatic and semi-automatic welding of simple parts, assemblies and structures made of structural steels, non-ferrous metals and alloys, as well as medium complexity parts in all positions of the weld, except for the ceiling.
2. Perform oxygen plasma straight and curved cutting of metal, simple and medium complexity of parts made of carbon and alloy steels, non-ferrous metals and alloys according to manual marking on portable, stationary and plasma cutting machines in all positions of the weld.
3. Carry out manual oxygen cutting and cutting with petrol-cutting and kerosene-cutting devices to the specified dimensions with the separation of non-ferrous metal waste and the preservation or cutting out of units and parts of machines.
4. Perform manual arc air planing of simple and medium complexity parts from various steels, cast iron, non-ferrous metals and alloys in various positions.
5. Surfacing of shells and cracks in parts, assemblies and low tides of medium complexity.
6. Perform preliminary and concomitant heating when welding parts in compliance with the specified mode.
Must know:
1. The device of serviced electric welding and plasma cutting machines, gas welding equipment, automatic machines, semi-automatic devices, as well as a plasma torch.
2. Requirement for welding seam and surface after air planing.
3. Methods for selecting electrode grades depending on steel grades.
4. Properties and value of electrode coatings.
5. The structure of the weld.
6. Rules for the preparation of parts and assemblies for welding and welding.
7. Rules for selecting the metal heating mode depending on its grade and thickness.
8. Causes of internal stresses and deformations in welded products, measures to prevent them.
9. Basic technological methods of welding and surfacing of parts made of various steels, cast iron, non-ferrous metals and alloys, cutting mode and gas consumption during oxygen and gas-electric cutting.

4th category
Job Description:
Manual arc and gas welding of medium complexity parts, assemblies, structures and pipelines made of structural steels, cast iron, non-ferrous metals and alloys and complex parts of assemblies, structures and pipelines made of carbon steels in all spatial positions of the weld.
Manual oxygen plasma and gas straight and figured cutting with petrol and kerosene cutting machines on portable, stationary and plasma cutting machines in various positions of complex parts from various steels, non-ferrous metals and alloys according to marking. Oxy-fuel cutting of parts made of high-chromium and chromium-nickel steels and cast iron. Oxygen cutting of ship objects afloat. Automatic and mechanized welding of medium complexity and complex devices, assemblies, pipeline structures from various articles, cast iron, non-ferrous metals and alloys.
Manual electric arc air planing of complex and critical parts from various steels, cast iron, non-ferrous metals and alloys in various positions. Welding of cast iron structures. Surfacing of defects in complex parts of machines, mechanisms, structures and castings for machining and test pressure. Hot straightening of complex and critical structures. Reading drawings of complex welded metal structures.
Must know:
The device of various electric welding and gas-cutting equipment, automatic and semi-automatic devices, features of welding and electric arc planing on alternating and direct current; the basic laws of electrical engineering within the scope of the work performed; types of defects in welds and methods for their prevention and elimination; basic information about the weldability of metals; mechanical properties of weldability of metals; principles of selection of the mode of welding by instruments; brands and types of electrodes; general information about methods of obtaining and storing the most common gases: acetylene, hydrogen, oxygen, propane-butane, used in gas welding; gas cutting process of alloy steel.

GAS WELDER

2nd category
Job Description: gas welding of simple parts, assemblies and structures of their carbon steels in the lower and vertical positions of the weld. Surfacing of simple non-critical parts. Elimination of shells and cracks by surfacing in simple ebbs. Heating of structures and parts during straightening.
Shall know: the principles of operation of serviced gas welding machines, gas generators, oxygen and acetylene cylinders, reducing devices and welding torches; types of welded joints and seams; preparation of product edges for welding; types of sections and designation of welds in the drawings; basic properties of gases and liquids used in welding; permissible residual gas pressure in cylinders; purpose and brand of fluxes used in welding; causes of defects in welding; characteristics of the gas flame.

3rd category
Job Description: gas welding of medium complexity of units, parts and pipelines made of carbon and structural steels and simple parts made of non-ferrous metals and alloys in all spatial positions of the weld, except for ceiling ones. Elimination of shells and cracks in parts and assemblies of medium complexity by surfacing. Hardfacing of simple parts. Preliminary and concomitant heating when welding parts in compliance with the specified mode.
Shall know: the device of the serviced and gas welding equipment; the structure of welds and methods for their testing; basic properties of welded metals; rules for preparing parts and assemblies for welding and surfacing; rules for choosing the mode of heating metals depending on its grade of thickness; causes of internal stresses and deformations in welded products and measures to prevent them; basic technological methods of welding and surfacing of parts made of steel, non-ferrous metals and cast iron.

ELECTRIC WELDER ON AUTOMATIC AND SEMI-AUTOMATIC MACHINES

2nd category
Job Description: automatic and mechanized welding of simple assemblies, parts and structures made of carbon and structural steels. Performance of works on maintenance of installations for automatic electroslag welding and automatic machines of special designs during welding of structures under the guidance of a highly qualified electric welder. Tacking parts, products, structures in all spatial positions by semi-automatic devices. Preparation of metal for welding. Surfacing of defects in parts and castings. Cleaning of parts and products for automatic and mechanized welding. Installation of parts and products in fixtures. Filling with electrode wire. Reading simple drawings.
Must know: the principle of operation of the applied electric welding machines and semi-automatic machines; basic information about the applied power sources; types of welded joints and seams; types of grooves and designation of welds in the drawings; rules for preparing metal for welding; the main properties of the electrode wire used, fluxes, shielding gas and welded metals and alloys; purpose and conditions for the use of instrumentation; general information about automatic and mechanized welding; causes of deformation of metals during welding and ways to prevent it.

3rd category
Job Description: automatic and mechanized welding using a plasma torch in all spatial positions of a weld of medium complexity for apparatuses, assemblies, parts, structures and pipelines made of carbon and structural steels. Surfacing of simple and medium complexity parts and assemblies. Automatic microplasma welding. Maintenance of installations for automatic electroslag welding and automatic welding of structures.
Should know: the device of the used welding machines, semi-automatic devices, plasma torches and power sources; properties and purpose of welding materials; main types of control of welded seams; choice of welding materials; causes of internal stresses and deformations in welded products and measures to prevent them; setting welding modes according to the specified parameters.

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Characteristics of works.

Manual oxygen cutting and cutting with petrol-cutting and kerosene-cutting machines of light-weight and heavy steel scrap. Manual arc, plasma, gas, automatic and semi-automatic welding of simple parts, assemblies and structures made of carbon steels. Oxygen and plasma rectilinear and curvilinear cutting in the lower and vertical position of a welded seam with metal, as well as simple and medium complexity parts made of carbon steels by manual marking, on portable stationary and plasma cutting machines. Tacking parts, products, structures in all spatial positions. Preparation of products, assemblies and connections for welding. Cleaning seams after welding and cutting. Ensuring protection of the reverse side of the weld during welding in shielding gases. Surfacing of simple details. Elimination of shells and cracks in simple parts, assemblies, castings. Heating of structures and parts during straightening. Reading simple drawings. Preparation of gas cylinders for work. Maintenance of portable gas generators.

What should know:

• device and principle of operation of serviced electric welding machines and apparatus for arc welding of alternating and direct current, gas welding and gas cutting equipment, gas generators, automatic and semi-automatic electric welding machines, oxygen and acetylene cylinders, reducing devices and welding torches
• rules for using the burners, reducers, cylinders used
• methods and basic techniques of tacking
• forms of cutting a seam for welding
• protection rules for gas-shielded welding
• types of welded joints and types of seams
• rules for preparing the edges of products for welding
• types of grooves and designation of welds in the drawings
• main properties of electrodes used in welding, welding metal and alloys, gases and liquids
• permissible residual gas pressure in cylinders
• purpose and brand of fluxes used in welding
• purpose and conditions for the use of instrumentation
• causes of defects in welding and ways to prevent them
• gas flame characteristics
• scrap dimensions according to the state standard.

Work examples

1. Tanks of transformers - eyeliner for automatic welding.
2. Cradle beams, sprung beams and bolsters of all-metal cars and cars of electric sections - welding of reinforcing squares, guides and centering rings.
3. Guard rail shoes - cutting on the ship.
4. Rolled beams - welding of points, capturing lanes along the marking.
5. Strikers and templates of steam hammers - surfacing.
6. Box bolts, column bolts and center bolts - surfacing of working places.
7. Side awning frame details - tacking and welding.
8. Details of metal containers - hot straightening.
9. Diaphragms of frames of platforms and metal gondola cars - welding of ribs.
10. Foals - welding.
11. Rivets - cutting heads.
12. Frames and details of brake pads of freight cars and window frames of passenger cars - welding.
13. Casings and fences, lightly loaded units of agricultural machines - welding.
14. Casings of oil pumps and filters of automobiles - surfacing of shells in castings.
15. Header brackets, brake control rollers - welding.
16. Brackets for attaching the muffler to the car frame - surfacing cracks.
17. Mounting brackets for mining equipment - welding.
18. Dump truck subframe brackets - welding.
19. Undercar lighting trough covers - welding.
20. Angular sheets of the inner and outer sheathing of the tram - welding of cuts.
21. Steel scrap for charge - cutting.
22. Linings and linings spring - welding.
23. Small flasks - welding ears.
24. Flasks steel of the small sizes - welding of ears.
25. Small steel and cast iron castings - elimination of shells in unworked places by melting.
26. Pallets for machines - welding.
27. Profits and letniki on steel castings up to 300 mm thick - cutting.
28. Frames of tanks of transformers - welding.
29. Bed mattress frames, armored and rhombic nets - welding.
30. Reception pipes - fusing of safety nets.
31. Car fender reinforcements - welding.
32. Clamps hydraulic mechanisms of dump trucks - welding.
33. Non-responsible foundations, small units made of low-carbon and low-alloy steels - semi-automatic welding on a rack.