Qualification characteristics of the gas cutter 4 category. Profession Gas cutter (4th category) in the Unified Tariff Qualification Guide. Several introductory videos about the profession

Job Description. Manual oxygen cutting and cutting with petrol-cutting and kerosene-cutting machines of light-weight steel scrap. Preparing castings for cutting, cleaning from burns, sprues and sprues and laying them for cutting. Charging and discharging the gas generator set.

Must know: basic cutting techniques, arrangement of used burners, cutters, reducers, cylinders; colors of gas cylinders and rules for handling them; the main properties of gases and liquids used in metal cutting, and the rules for handling them.

Work examples

1. Ingots - cut off the bottom.

2. Corners, pipes - cutting.

§ 2. Gas cutter of the 2nd category

Job Description. Oxygen and air-plasma rectilinear and curly cutting in the vertical and lower position of metal, simple carbon steel parts by manual marking on portable and stationary gas-cutting and plasma-arc machines. Manual oxygen cutting and cutting with petrol-cutting and kerosene-cutting machines of heavy steel scrap. Cutting risers and sprues for castings up to 300 mm thick with one slot and open core marks. Marking, selection by weight and profiles of simple oversized scrap, cutting to specified dimensions and stacking.

Must know: arrangement of serviced equipment and cutting tools; permissible residual gas pressure in cylinders; structure and properties of gas flame and plasma arc; cutting techniques; requirements for gas cutting; purpose and conditions for the use of special devices; scrap dimensions according to state standards; gas consumption rates; measures to prevent deformation during gas cutting.

Work examples

1. Shoes of lifeline racks - cutting on the ship.

2. Rivets - cutting heads.

3. Wrenches, plugs - cutting on a copier.

4. Flat flanges - cutting on portable and stationary machines.

§ 3. Gas cutter of the 3rd category

Job Description. Oxygen and air-plasma straight and figured cutting of metals, simple and medium complexity parts made of carbon and alloy steels, non-ferrous metals and alloys according to manual marking on portable and stationary oxygen and plasma-arc machines for cutting in all spatial positions weld. Cutting risers and gates for castings with a thickness of more than 300 mm, having several connectors and open core marks. Marking manual, oxygen cutting and cutting with petrol cutting machines of obsolete cranes, trusses, beams, machines and other complex scrap to specified dimensions according to state standard with the release of non-ferrous metal waste and with the preservation or cutting out of units and parts of machines that can be used after repair.

Must know: installation of serviced stationary and portable oxygen and plasma-arc machines, hand cutters and generators of various systems; device of special devices; properties of metals and alloys subjected to cutting; requirements for copiers for machine curly cutting, and rules for working with them; accuracy tolerances for gas cutting and planing; the most favorable ratios between metal thickness, mouthpiece number and oxygen pressure; cutting mode and gas consumption during oxygen and gas-electric cutting.

Work examples

1. Petrochemical equipment: tanks, separators, vessels and others - cutting holes without beveled edges.

2. Rolling stock spring suspension balancers - manual cutting according to markings.

3. Balancers and levers of the brake system of passenger cars - cutting on semi-automatic machines.

4. Parts made of sheet steel up to 40 mm thick - manual cutting according to the markup.

5. Parts made of sheet steel up to 60 mm thick - manually cut according to the marking.

6. Details of models - cutting according to curly templates.

7. Figured parts - cutting on oxygen machines with simultaneous operation of three cutters.

8. Workpieces for manual or automatic arc welding - cutting without bevel edges.

9. Ship structures - cutting holes.

10. Legs of propeller shaft brackets - cut.

11. Sheets of outer skin - cutting on an oxygen machine without cutting edges.

12. Metal profile and high-quality - cutting at preparation.

13. Flooring - cutting when installing.

14. Frames, covers, sidewalls, car bodies - cutting during assembly.

15. Pipes general purpose- cutting without bevel edges.

§ 4. Gas cutter of the 4th category

Job Description. Oxygen and air-plasma straight and figured cutting of complex parts from various steels, non-ferrous metals and alloys according to manual marking on portable and stationary oxygen and plasma-arc machines with photocell and program management. Oxygen manual cutting and cutting with petrol-cutting and kerosene-cutting devices of various steels, non-ferrous metals and alloys with cutting edges. Oxy-flux cutting of parts made of high-chromium and chromium-nickel steels and cast iron. Gas cutting of ship objects afloat.

Must know: installation of serviced oxygen and plasma-arc machines with photoelectric and program control and scale-remote device; the process of oxygen and plasma-arc cutting of alloyed steels; rules for cutting alloy steels with heating.

Work examples

1. Petrochemical equipment: tanks, separators, vessels, etc. - cutting holes with beveled edges.

2. Briquettes - cutting.

3. Parts made of sheet steel with a thickness of more than 60 mm - manual cutting according to the markup.

4. Parts made of sheet steel with a thickness of 40 to 100 mm - manual cutting according to marking with cutting edges for welding.

5. Details from sheet stainless steel, aluminum or copper alloys - cutting with beveled edges.

6. Complex shaped parts made of sheet carbon and alloy steels - cutting on a horizontal machine according to a drawing using a photo-projective method of marking or a roller leash with the simultaneous operation of the largest number of cutters.

7. Details of complex configuration from sheet steel with cutting edges for welding - cutting.

8. The design of blast furnaces: shells, air heaters, gas pipelines - cutting with beveled edges.

9. Complex structures - surface cutting of defects with preparation of edges for welding.

10. Sheets bent with one-sided cutting of edges - cutting.

11. Sheathing and set when assembling the hull from three-dimensional sections - cutting by hand according to the marking.

12. Pipes - bevel cutting.

13. Stubs, steering frames - cutting.

§ 5. Gas cutter of the 5th category

Job Description. Oxygen and air-plasma cutting of complex parts from various steels and non-ferrous metals and alloys according to manual marking with cutting edges for welding, including the use of special fluxes on portable and stationary machines with photoelectronic and program control according to cutting charts. Oxygen cutting of metals under water.

Must know: causes of thermal deformations during gas cutting and measures to reduce them; the influence of gas and air-plasma cutting processes on the properties of metals; rules for cutting metals under water.

Work examples

1. Ball and spherical bottoms - cutting oblique holes without subsequent machining.

2. Parts made of sheet steel with a thickness of more than 1000 mm - manual cutting according to the marking with cutting edges for welding.

3. Structures made of titanium and its alloys - cutting.

4. Sheet metal - air-plasma cutting.

5. Rolled steel blanks from alloy steels - figured cutting with the use of special fluxes.

6. Rolls from non-ferrous metals - air-plasma cutting.

7. Pipelines - air-plasma cutting.

shifter

Job Description.

1. Manual oxygen cutting and cutting with petrol-cutting and kerosene-cutting machines of light-weight steel scrap.

2. Preparation of castings for cutting, cleaning from burns, profits and sprues and laying them for cutting.

3. Charging and discharging the gas generator set.

Must know:

Basic cutting techniques, arrangement of used burners, cutters, reducers, cylinders;

Colors of coloring of gas cylinders and rules for handling them;

The main properties of gases and liquids used in metal cutting, and the rules for handling them.

Work examples.

1. Ingots - cut off the bottom.

2. Corners, pipes - cutting.

Gas cutter 2nd category

Job Description.

1. Oxygen and air-plasma straight and figured cutting in vertical and lower position of metal, simple carbon steel parts by manual marking on portable and stationary gas-cutting and plasma-arc machines.

2. Manual oxygen cutting and cutting with petrol-cutting and kerosene-cutting machines of heavy steel scrap.

3. Cutting risers and sprues for castings up to 300 mm thick with one slot and open rod marks.

4. Marking, selection by weight and profiles of simple oversized scrap, cutting to specified dimensions and stacking.

Must know:

Arrangement of serviced equipment and cutting tools;

Permissible residual gas pressure in cylinders;

Structure and properties of gas flame and plasma arc;

cutting techniques;

Requirements for gas cutting;

Purpose and conditions for the use of special devices;

Scrap dimensions according to state standards;

Gas consumption rates;

Measures to prevent deformation during gas cutting.

Work examples.

1. Shoes of lifeline racks - cutting on the ship.

2. Rivets - cutting heads.

3. Wrenches, plugs - cutting on a copier.

4. Flat flanges - cutting on portable and stationary machines.

Gas cutter 3rd category

Job Description.

1. Oxygen and air-plasma straight and figured cutting of metals, simple and medium complexity parts made of carbon and alloy steels, non-ferrous metals and alloys according to manual marking on portable and stationary oxygen and plasma-arc machines for cutting in all spatial positions of the weld.

2. Cutting risers and sprues for castings with a thickness of more than 300 mm, having several connectors and open rod marks.

3. Manual marking, oxy-fuel cutting and cutting of obsolete cranes, trusses, beams, machines and other complex scrap to specified sizes according to the state standard with the release of non-ferrous metal waste and with the preservation or cutting out of units and parts of machines that can be used after repair .

Must know:

Arrangement of serviced stationary and portable oxygen and plasma-arc machines, hand cutters and generators of various systems;

The device of special devices;

Properties of metals and alloys subjected to cutting;

Requirements for copiers for machine curly cutting, and rules for working with them;

Accuracy tolerances for gas cutting and planing;

The most favorable ratio between metal thickness, mouthpiece number and oxygen pressure;

Cutting mode and gas consumption during oxygen and gas-electric cutting.

Work examples.

1. Petrochemical equipment: tanks, separators, vessels and others - cutting holes without beveled edges.

2. Rolling stock spring suspension balancers - manual cutting according to markings.

3. Balancers and levers of the brake system passenger cars- cutting on semi-automatic machines.

4. Parts made of sheet steel up to 40 mm thick - manual cutting according to the markup.

5. Parts made of sheet steel up to 60 mm thick - manually cut according to the marking.

6. Details of models - cutting according to curly templates.

7. Figured parts - cutting on oxygen machines with simultaneous operation of three cutters.

8. Workpieces for manual or automatic arc welding - cutting without bevel edges.

9. Ship structures - cutting holes.

10. Legs of propeller shaft brackets - cut.

11. Sheets of outer skin - cutting on an oxygen machine without cutting edges.

12. Metal profile and high-quality - cutting at preparation.

13. Flooring - cutting when installing.

14. Frames, covers, sidewalls, car bodies - cutting during assembly.

15. Pipes of general purpose - cutting without bevel edges.

Gas cutter 4th category

Job Description.

1. Oxygen and air-plasma rectilinear and shaped cutting of complex parts from various steels, non-ferrous metals and alloys according to manual marking on portable and stationary oxygen and plasma-arc machines with photocell and program control.

2. Manual oxygen cutting and cutting with petrol cutting and kerosene cutting machines of various steels, non-ferrous metals and alloys with cutting edges.

3. Oxy-flux cutting of parts made of high-chromium and chromium-nickel steels and cast iron.

4. Gas cutting of ship objects afloat.

Must know:

Arrangement of serviced oxygen and plasma-arc machines with photoelectric and program control and scale-remote device;

The process of oxygen and plasma-arc cutting of alloyed steels;

Rules for cutting alloy steels with heating.

Work examples.

1. Petrochemical equipment: tanks, separators, vessels, etc. - cutting holes with beveled edges.

2. Briquettes - cutting.

3. Parts made of sheet steel with a thickness of more than 60 mm - manual cutting according to the markup.

4. Parts made of sheet steel with a thickness of 40 to 100 mm - manual cutting according to marking with cutting edges for welding.

5. Details from sheet stainless steel, aluminum or copper alloys - cutting with beveled edges.

7. Details of complex configuration from sheet steel with cutting edges for welding - cutting.

8. The design of blast furnaces: shells, air heaters, gas pipelines - cutting with beveled edges.

9. Complex structures - surface cutting of defects with preparation of edges for welding.

10. Sheets bent with one-sided cutting of edges - cutting.

11. Sheathing and set when assembling the hull from three-dimensional sections - cutting by hand according to the marking.

12. Pipes - bevel cutting.

13. Stubs, steering frames - cutting.

Gas cutter 5th category

Job Description.

1. Oxygen and air-plasma cutting of complex parts from various steels and non-ferrous metals and alloys according to manual marking with cutting edges for welding, including the use of special fluxes on portable and stationary machines with photoelectronic and program control according to cutting charts.

2. Oxygen cutting of metals under water.

Must know:

Causes of thermal deformations during gas cutting and measures to reduce them;

Influence of gas and air-plasma cutting processes on the properties of metals;

Rules for cutting metals under water.

Work examples.

1. Ball and spherical bottoms - cutting oblique holes without subsequent machining.

2. Parts made of sheet steel with a thickness of more than 1000 mm - manual cutting according to the marking with cutting edges for welding.

3. Structures made of titanium and its alloys - cutting.

4. Sheet metal - air-plasma cutting.

5. Rolled steel blanks from alloy steels - figured cutting with the use of special fluxes.

6. Rolls from non-ferrous metals - air-plasma cutting.

7. Pipelines - air-plasma cutting.

Retraining, advanced training of a gas cutter with the assignment of a qualification category.

Group lessons or individual consultations. Training is conducted both on the basis of an educational institution and on the basis of a customer organization in any region of Belarus.

Workers with a category in this profession (1-4 category) can undergo advanced training.

Upon completion of training, state-recognized documents are issued: a certificate of assignment qualification category by profession.

Who is a gas cutter?

A gas cutter is a skilled worker who cuts metal, metal scrap using gas and oxygen cutters, as well as cutters for liquid fuel (gasoline, kerosene). Often, these specialists work in welding shops as a specialist in preparing material for welding work (this may be cutting small parts). The specialty of a gas cutter is used quite widely in many industries from mechanical engineering to waste disposal.

Topics of the professional part of the gas cutter training course program

General information about metal cutting;
Metals and their properties;
Non-ferrous metals and their alloys;
Types and properties of materials used for gas cutting;
Cylinders for gases, gas reducers;
Pipelines and hoses for combustible gases and oxygen;
Hand cutters;
Machine cutters;
Classification of thermal cutting methods;
The essence of the gas cutting process;
The influence of the preheating flame on the cutting process;
A jet of cutting oxygen;
Influence of the cutting process on the metal of the cut surface;
Separation flame cutting technology for steel;
Methods for improving productivity and cutting quality;
Separating oxygen cutting of titanium and its alloys;
Oxy-arc and air-arc cutting;
Plasma-arc cutting.

A few introductory videos about the profession:

ETKS

GAS CUTTER

1st category

Characteristics of works. Manual oxygen cutting and cutting with petrol-cutting and kerosene-cutting machines of light-weight steel scrap. Preparing castings for cutting, cleaning from burns, sprues and sprues and laying them for cutting. Charging and discharging the gas generator set.

Should know: the basic cutting techniques, the design of the used burners, cutters, reducers, cylinders; colors of gas cylinders and rules for handling them; the main properties of gases and liquids used in metal cutting, and the rules for handling them.

Work examples.

Ingots - a piece of the bottom part.
Corners, pipes - cutting.

GAS CUTTER

2nd category

Characteristics of works. Oxygen and air-plasma rectilinear and figured cutting in vertical and lower position of metal, simple carbon steel parts by manual marking on portable and stationary gas-cutting and plasma-arc machines. Manual oxygen cutting and cutting with petrol-cutting and kerosene-cutting machines of heavy steel scrap. Cutting risers and sprues for castings up to 300 mm thick with one slot and open core marks. Marking, selection by weight and profiles of simple oversized scrap, cutting to specified dimensions and stacking.

Should know: the device of the serviced equipment and the tool for cutting; permissible residual gas pressure in cylinders; structure and properties of gas flame and plasma arc; cutting techniques; requirements for gas cutting; purpose and conditions for the use of special devices; scrap dimensions according to standards; gas consumption rates; measures to prevent deformation during gas cutting.

Work examples.

Guard rail shoes - cutting on the ship.
Rivets - cutting heads.
Wrenches, plugs - cutting on a copier.
Flat flanges - cutting on portable and stationary machines.

GAS CUTTER

3rd category

Characteristics of works. Oxygen and air-plasma straight and figured cutting of metals, simple and medium complexity parts made of carbon and alloy steels, non-ferrous metals and alloys according to manual marking on portable and stationary oxygen and plasma-arc machines for cutting in all spatial positions of the weld. Cutting risers and gates for castings with a thickness of more than 300 mm, having several connectors and open core marks. Marking manual, oxygen cutting and cutting with gas-cutting machines of obsolete cranes, trusses, beams, machines and other complex scrap to specified sizes according to the standard with the release of non-ferrous metal waste and with the preservation or cutting out of units and parts of machines that can be used after repair.

Should know: arrangement of serviced stationary and portable oxygen and plasma-arc machines, hand cutters and generators of various systems; device of special devices; properties of metals and alloys subjected to cutting; requirements for copiers for machine curly cutting, and rules for working with them; accuracy tolerances for gas cutting and planing; the most favorable ratios between metal thickness, mouthpiece number and oxygen pressure; cutting mode and gas consumption during oxygen and gas-electric cutting.

Work examples.

Petrochemical equipment: tanks, separators, vessels, etc. - cutting holes without beveled edges.
Rolling stock spring suspension balancers - manual cutting according to the marking.
Balancers and levers of the brake system of passenger cars - cutting on semi-automatic machines.
Details from sheet steel up to 40 mm thick - manual cutting according to the markup.
Parts made of sheet steel up to 60 mm thick - manually cut according to the marking.
Details of models - cutting on curly templates.
Figured details - cutting on oxygen machines with simultaneous operation of three cutters.
Workpieces for manual or automatic arc welding - cutting without bevel edges.
Ship structures - cutting holes.
Legs of propeller shaft brackets - cut.
Sheathing sheets - cutting on an oxygen machine without cutting edges.
Metal profile and high-quality - cutting at preparation.
Flooring - cutting during installation.
Frames, covers, sidewalls, car bodies - cutting during assembly.
Pipes of general purpose - cutting without bevel edges.

GAS CUTTER

4th category

Characteristics of works. Oxygen and air-plasma rectilinear and shaped cutting of complex parts from various steels, non-ferrous metals and alloys according to manual marking on portable and stationary oxygen and plasma-arc machines with photocell and program control. Oxygen manual cutting and cutting with petrol-cutting and kerosene-cutting devices of various steels, non-ferrous metals and alloys with cutting edges. Oxy-flux cutting of parts made of high-chromium and chromium-nickel steels and cast iron. Gas cutting of ship objects afloat.

Must know: arrangement of serviced oxygen and plasma-arc machines with photoelectric and program control and scale-remote device; the process of oxygen and plasma-arc cutting of alloyed steels; rules for cutting alloy steels with heating.

Work examples.

Petrochemical equipment: tanks, separators, vessels, etc. - cutting holes with bevelled edges.
Briquettes - cutting.
Details from sheet steel with a thickness of more than 60 mm - manual cutting according to the marking.
Parts made of sheet steel with a thickness of 40 to 100 mm - manual cutting according to marking with cutting edges for welding.
Details from sheet stainless steel, aluminum or copper alloys - cutting with beveled edges.
Complex shaped parts made of sheet carbon and alloy steels - cutting on a horizontal machine according to a drawing using a photo-projective marking method or a roller leash with the simultaneous operation of the largest number of cutters.
Details of complex configuration from sheet steel with cutting edges for welding - cutting.
Constructions of blast furnaces: shells, air heaters, gas pipelines - cutting with beveled edges.
Complex structures - surface cutting of defects with preparation of edges for welding.
Sheets bent with unilateral cutting of edges - cutting.
Sheathing and set when assembling the hull from three-dimensional sections - cutting by hand according to the marking.
Pipes - cutting with beveled edges.
Stubs, steering frames - cutting.

GAS CUTTER

5th category

Characteristics of works. Oxygen and air-plasma cutting of complex parts from various steels and non-ferrous metals and alloys according to manual marking with cutting edges for welding, including the use of special fluxes on portable and stationary machines with photoelectronic and program control according to cutting charts. Oxygen cutting of metals under water.

Must know: the causes of thermal deformations during gas cutting and measures to reduce them; the influence of gas and air-plasma cutting processes on the properties of metals; rules for cutting metals under water.

Work examples.

Bottoms spherical and spherical - cutting oblique holes without subsequent machining.
Parts made of sheet steel with a thickness of over 1000 mm - manual cutting according to marking with cutting edges for welding.
Structures made of titanium and its alloys - cutting.
Sheet metal - air-plasma cutting.
Rolled steel blanks from alloy steels - figured cutting with the use of special fluxes.
Rolls from non-ferrous metals - air-plasma cutting.
Pipelines - air-plasma cutting.

I N S T R U K T I A

on labor protection for a gas cutter

№________

Chapter 1. GENERAL REQUIREMENTS FOR LABOR SAFETY.

1. Persons whose age corresponds to established legislation Republic of Belarus, past medical checkup V in due course and having no contraindications to the performance of this type of work, who have undergone special technical training, passed the exam and received the appropriate certificate.

To perform gas hazardous work, gas cutters are allowed who are trained according to the appropriate program, who have passed the exam, received a certificate for the right to work and are allowed to perform gas hazardous work.

2. A gas cutter undergoes a periodic medical examination in accordance with the procedure established by the Ministry of Health of the Republic of Belarus.

3. The gas cutter must undergo a repeated examination of knowledge of safe working methods at least once every 12 months.

The gas cutter passes an extraordinary knowledge test in the following cases:

when there is a break in work in the specialty for more than one year;
at the request of a higher organization, responsible persons of the enterprise;
at the request of state supervision bodies;

4. The gas cutter must undergo safety briefings:

when hiring - introductory and primary at the workplace;
in the process of work at least once every 6 months - repeated;
upon the introduction of new or revised rules, instructions on labor protection, changes technological process, violations of labor safety requirements that can lead or have led to injury, accident, explosion or fire, poisoning; breaks in work for more than 30 calendar days - unscheduled;
before the production of work for which a work permit is issued - target.

5. The gas cutter is obliged to assist and cooperate with the employer in ensuring healthy and safe conditions labor, immediately notify your immediate supervisor or other official of the employer about the malfunction of equipment, tools, fixtures, Vehicle, means of protection, about the deterioration of their health.

6. The gas cutter must have a clear understanding of the hazardous and harmful production factors associated with the performance of work (increased gas contamination, increased concentration harmful substances in the air of the working area, blinding brightness of visible radiation, splashes of molten metal, sparks) and know the basic methods of protection against their effects.

6. Gas cutter must:

know the requirements set forth in the "Rules for the Design and Safe Operation of Pressure Vessels", "Rules fire safety and safety precautions during hot work at enterprises of the Republic of Belarus”, “Industrial safety rules in the field of gas supply of the Republic of Belarus”, technological instructions and instructions for labor protection;
know the requirements of explosion and fire safety when performing work and be able to use fire extinguishing equipment;
when performing work, use personal protective equipment issued in accordance with the Model Industry Standards for the free issue of special clothing, special footwear and other personal protective equipment to workers and employees;

Overalls:

summer suit for a welder Tr - 12 months;

tarpaulin apron with bib Tr -12 months;

underwear (2 sets);

boots for the welder Tr - 12 months;

tarpaulin mittens (split mittens) Tp400Tr - until worn out;

tarpaulin sleeves ZND - until worn out;

goggles O - to wear.

When working in places where it is necessary to protect the head from mechanical damage, additionally:

protective helmet En - on duty.

When working at height, in underground structures additionally:

safety strap belt - on duty.

In winter additionally:

winter suit for a welder TnVu - 36 months;

winter balaclava - 36 months;

insulated tarpaulin boots SlTn30 - 24 months;

two-fingered winter gloves Tn - until worn out.

be able to provide first aid to the victim;
follow the rules of the internal work schedule;
know the sanitary and hygienic working conditions and comply with the requirements of industrial sanitation.

7. The gas cutter must not endanger himself and be in the places of work that are not directly related to the work performed.

8. The victim or eyewitness must immediately report each accident at work to the immediate supervisor of the work, who is obliged:

organize first aid to the victim and his delivery to the medical center;
report the incident to the head of the department;
to keep the situation at the workplace and the condition of the equipment as they were at the time of the incident until the start of the work of the investigation commission, if this does not endanger the life and health of the surrounding workers and does not lead to an accident.

9. The gas cutter must inform the immediate supervisor of the work about all noticed malfunctions of equipment, tools and fixtures and do not start work until they are eliminated.

10. Gas cutter is responsible for:

compliance with the requirements of technological instructions and instructions for labor protection, fire safety rules;
compliance with the rules of internal labor regulations;
quality work;
safety of the equipment entrusted to him;
accidents, accidents and other violations caused by the actions of a gas cutter that violates the requirements of technological instructions and labor protection instructions.

11. For violation of labor discipline, non-compliance with the requirements of normative and technical documents on labor protection, the gas cutter is subject to disciplinary liability in accordance with Labor Code The Republic of Belarus.

12. A gas cutter who appeared at work in a state of intoxication, in a state of narcotic or toxic intoxication, is not allowed to work that day.

13. The gas cutter is obliged to perform the work stipulated by the employment contract.

Chapter 2. HEALTH REQUIREMENTS BEFORE STARTING WORK.

14. The organization of the workplace of the gas cutter must ensure the safety of the work.

15. The work site must be free from combustible materials within a radius of at least 5 m, combustible structures must be protected with metal or asbestos sheets or watered.

16. Before starting gas cutting in rooms where existing gas pipelines are laid and there are gas-consuming units, the air must be checked for gas content. The room must be well ventilated during the entire period of work.

17. In fire and explosive places, gas cutting work should be carried out only after thorough cleaning of explosive and flammable products, cleaning of equipment and premises, complete removal of explosive substances and gases, flammable and combustible liquids and their vapors.

18. Before cutting, containers containing flammable liquids, gases, etc., must be cleaned, washed, dried and subsequently checked to confirm the absence of an explosive mixture and the absence of a dangerous concentration of harmful substances.

19. In wells with overlappings, hydraulic fracturing and on the territory of the gas filling station, gas filling stations, gas cutting is not allowed on existing gas pipelines without shutting down and purging them with air or inert gas. When disconnecting gas pipelines, plugs must be installed after the shut-off devices.

20. Before starting gas cutting in wells, pits and collectors, air must be checked for gas contamination. The volume fraction of gas in air must not exceed 20% of the lower flammable limit. Samples should be taken in the most poorly ventilated areas. During the entire period of work on LPG pipelines, wells and pits must be ventilated by forcing air with a fan or compressor.

21. In gas wells, cutting is allowed only after the complete removal of the ceilings.

22. When performing work at height, scaffolding, scaffolding or platforms should be arranged. Workplaces located above 1.3 meters from ground level or a solid ceiling must be equipped with fences.

23. No unauthorized persons are allowed to stay at the work site.

24. Before starting work, the gas cutter must:

receive oral instruction on labor safety from the immediate supervisor of the work, sign the work permit for the production of gas hazardous work and familiarize yourself with the special work plan (before performing gas hazardous work);
check the serviceability and completeness of equipment, tools, fixtures and other inventory necessary for the performance of work;
check the availability and serviceability of personal protective equipment.

25. When checking the serviceability of the equipment, the gas cutter must:

inspect the acetylene generator, make sure that there is a safety valve, a water seal and a pressure gauge;

pour water into the water lock to the level of the control fitting and make sure that all connections in the lock are tight;
make sure the calcium carbide basket is dry and free of silt;
make (if necessary) adjustment and adjustment of the safety valve to the pressure indicated in the certificate for the acetylene generator;
inspect the reducer, make sure that the pressure gauges are in good condition and that there are no traces of oil and fat on the nipple and union nut of the reducer;
check the tightness and tightness of the connection of gas hoses to the burner and reducer and make sure that the hoses are in good condition. It is prohibited to use hoses with defects, as well as to wind them with insulating tape or other materials. To fix the hoses on the connecting nipples of the burner and the reducer, use special clamps. It is allowed to fix the hoses on the fitting nipples by tying the hose with soft annealed (knitting) wire at least in two places along the length of the nipple. On the nipples of the water seal of the acetylene generator, the hoses should be worn tightly, but not fixed;
check the health of the cutter;
choose the right numbers of the outer and inner mouthpieces, depending on the type and thickness of the metal being cut. If necessary, they should be cleaned with an aluminum or copper needle. Before ignition, the cutter and the hoses leading to it must be blown out;

check the serviceability of the acetylene (cylinder with propane-butane) and oxygen cylinders. It is forbidden to use cylinders that have expired the next examination, there are no established stamps, valves are faulty, the body is damaged (cracks, severe corrosion, a noticeable change in shape), there are traces of fat or oil on the oxygen cylinder valve fitting.

26. When checking readiness and serviceability hand tool gas cutter must:

check the reliability of fixing the hand tool, the absence of potholes, chips at the working ends, burrs and sharp edges in the places of clamping by hand;
make sure that the non-ferrous metal tool is in good condition. When working with acetylene, you should use a tool made of brass, wood and other materials that do not spark when struck, with the exception of copper.

27. When checking personal protective equipment, the gas cutter must:

put in order the overalls and special footwear. Jacket and trousers should be worn loose. When performing gas hazardous work in a well, tank and other similar places, shoes must be without steel shoeing and nails;
check the condition of goggles with special light filters (for gas) welding;
check the condition of safety goggles with special light filters. Glasses should fit snugly to the face;
before performing work, during which a sudden release of gas from the gas pipeline is possible, select a gas mask according to the size. The gas mask should fit snugly to the face, without causing pain. Check the tightness of the gas mask. A gas mask is suitable if it is impossible to breathe when clamping the end of the corrugated tube;
before performing work in wells, deep pits (more than 2 m deep), tanks, check the suitability of rescue belts, belt carabiners and rescue ropes by visual inspection, check the condition of the shoulder straps with a ring at the intersection of the straps from the back to secure the rope, adjust the rescue harness in such a way that so that the ring is located no lower than the shoulder blades.

28. Before starting work, the gas cutter must:

inspect and fix workplace, remove everything superfluous from under your feet;
Check for fire extinguishers. It is forbidden to work in their absence at the workplace;
make sure that the slopes are stable or the vertical walls of the soil of the pit, trench are securely fastened;
remove from the edge of the pit, trench cutting pipes and other objects that can fall down and cause injury;
before performing work in the well, make sure that there are no overlaps (when performing gas hazardous work);
provide a workplace with a vessel with water to cool the cutter;
make sure that the pipes or other parts to be cut are stable and that the ends to be cut are fixed and cannot fall;
clean the cut area from paint, oil, bitumen, scale and dirt to prevent metal spatter and air pollution by combustion products.

29. The gas cutter should not start work without the instructions of the immediate supervisor of the work.

Chapter 3

30. The installation site of the acetylene generator must be fenced off and prohibitory signs or inscriptions should be posted: “Entrance to strangers is prohibited - flammable”, “Do not smoke”, “Do not pass with fire”.

31. The acetylene generator should be installed at a distance of at least 10 m from the place of welding, from open flames and very hot objects, from places where air is taken in by compressors and fans. Placement of acetylene generators in driveways, places of mass location or passage of people is not allowed.

32. When installing a portable acetylene generator, make sure that it is installed vertically and is protected from accidental shocks or impacts.

33. During the operation of acetylene generators, it is necessary:

pour water to the level set for this generator;
use calcium carbide only with the granulation specified in the passport;
keep the water seal constantly filled with water;
check the water level in the water seal after a backfire;
make sure that there is no leakage of gas from taps, plugs and other connections. The location of the gas leak should be determined using a soapy emulsion.

34. When operating portable acetylene generators in the cold season, it is necessary to take measures to protect the generators from freezing.

In case of freezing of water in the generator, water seal or hose, warm them up in a warm room at a distance of at least 10 m from sources of open fire. It is allowed to warm the generator with hot water or steam.

After warming up, the gas cutter must check the serviceability of the individual parts of the generator and make sure that it is filled with water correctly.

35. During the operation of acetylene generators, it is prohibited:

carry out work from one water lock to several workers;
load calcium carbide in excess of the norm established by the passport, or push it with the help of iron rods and wire;
load calcium carbide into wet loading baskets or in the presence of water in the gas collector;
move the generator if there is acetylene in the gas collector;
work on carbide dust;
force gas formation in excess of the performance established by the passport;
work from a portable generator located on the same trolley with an oxygen cylinder;
leave the generator unattended during operation. If you need to leave the generator, you should ensure its protection.

36. When working with calcium carbide, it is necessary:

unclogging drums with calcium carbide to produce a brass chisel and a hammer. Open tightly sealed drums with a special knife. The place of the cut on the lid is pre-lubricated with a thick layer of grease (grease);
open drums with calcium carbide should be closed with water-tight lids with bent edges tightly covering the drum. The height of the side of the lid must be at least 50mm;
crush large pieces of calcium carbide with a brass hammer (sledgehammer). Crush and hang calcium carbide carefully, avoiding the formation and accumulation of dust. Accidentally spilled calcium carbide should be carefully collected;
carbide dust, formed during grinding of calcium carbide and collected from drums, should be decomposed in small portions in water tanks in a safe place. The next portion can be filled up only after the complete decomposition of the previous one;
sludge unloaded from the generator, completely decomposed remains of calcium carbide should be placed in special sludge pits. Open silt pits must be fenced with railings, and closed pits must have fireproof ceilings and be equipped with exhaust ventilation and hatches for removing sludge;
use a respirator, goggles and gloves when crushing calcium carbide and when unloading sludge from the generator.

37. When using acetylene (cylinder with propane-butane) and oxygen cylinders, the gas cutter must:

deliver cylinders to the place of work on spring transport, carts and stretchers specially designed for this purpose;
transport cylinders in a horizontal position, laying them with valves in one direction, and always with gaskets (wooden blocks with cut-out nests for cylinders, rope or rubber rings at least 25 mm thick). Transportation of cylinders in a vertical position is allowed if there are gaskets between them. To prevent movement of cylinders during transportation, they should be secured;
transport cylinders with screwed caps and screwed caps;
in the summer, protect the cylinders from sunlight (to prevent their heating);
take measures against falling, damage and contamination of cylinders;
place cylinders installed indoors at a distance of at least 1 m from heating devices and at least 10 m from stoves and other sources of heat with open fire. Cylinders must be installed from the welding torch at a distance of at least 10 m. It is allowed to have no more than two cylinders at the workplace: one is a working one, the other is a spare one;
warm the frozen reducer and the valve of the oxygen cylinder with steam or hot water that does not have traces of oil.

38. When handling empty oxygen and combustible gas cylinders, the same safety precautions should be observed as with filled cylinders.

joint transportation of cylinders with oxygen and combustible gases. In special vehicles of gas facilities intended for emergency work, it is allowed to transport cylinders with hydrocarbon liquefied gas together with oxygen cylinders. It is allowed to transport in special vehicles no more than three cylinders with a total of liquefied gas in them no more than 75 kg, which when performing general rules security can be considered the carriage of non-dangerous goods;
carry cylinders on the shoulders, roll on the ground or pull the valve;
subject the cylinders to shocks, sharp shocks;
joint indoor storage of cylinders with oxygen and other combustible gases, as well as with calcium carbide, paints and oils;
carry out any repair of cylinders, including valves, on their own, knock on the cylinder valve. The gas cutter must open the valve of the acetylene cylinder or mount the gearbox on it with a special key.

40. During gas welding, the following safety requirements must be observed:

when igniting the torch, the oxygen valve must first be slightly ajar, then the combustible gas valve is opened, and after a short purge of the hose, the mixture of gases is ignited. The heating flame must be regulated by oxygen and gas valves. For cutting, the cutting oxygen valve must be opened. When extinguishing the cutter, these operations are performed in reverse order;
the cutter should be ignited with a match or a special lighter. It is forbidden to light the cutter from hot metal or other objects;
during breaks in work, the flame of the cutter must be extinguished, and the valves on it must be tightly closed. It is not allowed to let go of the cutter before it is extinguished;
if the gas cutter needs to approach the generator during the production of work, then he must, having extinguished the cutter, leave it at the place of work and make sure that the clothes do not smolder from sparks;
during long breaks in work (lunch, etc.), the valves on the oxygen cylinder and the cylinder with combustible gas must be closed;
in case of a reverse flame strike, close the valves on the cutter, cylinders, water seal;
after each kickback, the torch must be cooled down in clean water, and blow the hoses with the gases for which they are intended, check the condition of the water seal;
do not allow the torch to become very hot, for which it is necessary to periodically cool it in a bucket of clean water. To prevent water from entering the cutter channels, it is necessary to close the gas valve, leaving the oxygen valve open;
the flame of the torch should be directed in the direction opposite to the location of the gas cylinders. If this requirement cannot be met, then gas cylinders should be protected by metal shields or screens made of non-combustible materials;
metal should be heated with a properly lit cutter. When only combustible gas without oxygen is used for heating, carbon monoxide poisoning is possible due to incomplete combustion of combustible gas or the formation of an explosive mixture with air;
it is necessary to use a gas mask (respirator) when cutting metals containing zinc, copper, lead and other impurities.

41. Gas cutting on existing gas pipelines during the repair and connection of gas pipelines to them should be carried out at a gas pressure of 40-150 daPa (40-150 mm of water column). If the pressure deviates from the specified parameters, the cutting should be stopped.

To avoid the formation of a large flame, it is necessary:

the place of cutting during the production process should be smeared with fireclay clay;
to reduce the flame of burning gas flowing out of the slot, make sure that the length of the non-oiled part of the slot is no more than 3-5 cm;
make sure that the clay filling the slot does not dry out and does not crack; for this, periodically apply liquefied clay to the smeared part of the slot and lubricate with water;
if the length of the flame escaping gas when cutting the “window” reaches 60-70 cm, turn off the cutter, extinguish the flame, cool the cutter in a container with water, and cover the slot with clay.

42. In the event that during cutting on the existing gas pipeline the flame of the cutter or the outgoing gas goes out, the gas cutter is obliged to cover the place cut in the gas pipeline with clay. You can resume work only after airing the pit, well, trench.

43. When performing work in wells, deep pits (more than 2 m deep), the gas cutter must be equipped with a rescue belt with a rope, and in the event of a possible gas outlet, with a gas mask.

On the surface of the earth on the windward side there must be at least 2 people who are obliged to hold the ends of the ropes from the life belt of the gas cutter located in the well, pit, etc., to continuously monitor the working and air intake pipe of the hose gas mask, not to allow place of work of outsiders.

44. For descending into wells that do not have brackets, pits, metal ladders of sufficient length with devices for fixing them at the edge of the well, pit should be used.

45. When carrying out electric and gas welding and gas welding, it is prohibited:

leave unattended gas cutting equipment;
allow unauthorized persons to enter the work area;
smoking and using an open fire closer than 10 m from cylinders with oxygen, acetylene, propane-butane, from acetylene generators and sludge pits;
thaw frozen acetylene generators, pipelines, valves, reducers and other parts of equipment for gas cutting with open fire or hot objects;
allow contact of oxygen cylinders and equipment with the presence of oxygen in it with vegetable, animal and mineral oils, as well as oiled clothing, rags and other items;
touch with unprotected hands the heated places of the cut metal;
to cut freshly painted structures and products until the paint is completely dry;
move with a lit cutter outside the workplace or climb stairs, stepladder;
purge the acetylene hose with oxygen and the oxygen hose with acetylene, as well as interchange the hoses during operation;
lay hoses near heat sources and electrical wires, use hoses with a length of less than 10 and more than 40 m;
twist the hoses together, twist them or clamp them in circles;
work with insufficient illumination of the workplace;
work in the presence of air pollution;
descend into pits, wells, trenches and climb out of them without the use of a special ladder or ladder;
hold any objects in your hands when descending into a well, pit, trench and when leaving them. All tools and materials necessary for work must be lowered in a bag or other container separately, after the workers descend;
descend into wells, pits without a life belt;
jump over trenches, step on manhole covers and coverings of pits, ditches, pits in order to avoid falling into them.

Chapter 4

46. Upon completion of work, the gas cutter must:

refine calcium carbide in a portable acetylene generator;
pour out water from the generator, water lock and hoses, release acetylene, clean the shaft boxes and retorts from silt, take it out in a metal container into a special sludge pit;
remove the oxygen cylinder and the generator (acetylene cylinder, propane-butane cylinder) to the place intended for their storage;
make sure that after work there are no smoldering objects (rags, insulating material, etc.);
tidy up the workplace, assemble tools, protective devices;
take off overalls and safety shoes in a specially designated place.

Chapter 5. REQUIREMENTS FOR LABOR SAFETY IN EMERGENCY SITUATIONS.

47. In the event of a fire near the place of work, the gas cutter must:

close the valve on the acetylene generator (acetylene cylinder, propane-butane cylinder), then the oxygen cylinder valve;
take measures to extinguish the fire with the available fire extinguishing means (sand, fire extinguisher). It is forbidden to use water to extinguish a fire in a place where calcium carbide is located;
if necessary, inform the emergency service and call the fire brigade.

In case of fire of acetylene or propane-butane in the reducer, the valve, it is necessary to close the valve on the cylinder and take the cylinder to a safe place.

In the event of a fire in the hose, quickly bend it near the burning place on the side of the gearbox or generator and close the valve.

48. In the event of a sudden release of gas, the gas cutter must:

close the valve on the acetylene generator (acetylene cylinder, propane-butane cylinder), then the oxygen cylinder valve;
report the incident to the immediate supervisor;
notify the emergency service;
take measures to ventilate the room, well, pit, trench.

49. In case of an accident (injury, burn, sudden illness), the gas cutter is obliged to provide first aid to the victim.

Write a review

Your name:

Your feedback:

Note: HTML markup is not supported! Use plain text.

Grade: Badly Fine

Enter the code shown in the picture:

Depending on the complexity of the work performed on manual and mechanized cutting, as well as on the level of knowledge of gas cutting equipment and equipment, the Unified Tariff and Qualification Guide establishes 5 categories of a gas cutter.

1st rank. Description of work: oxygen cutting of steel lightweight scrap (pipes, angles, metal trimmings) under the guidance of a gas cutter more than highly qualified; charging and discharging the gas generator set; preparation of castings for trimming, cleaning of burn-on risers and sprues, laying their iodine trimming.

The gas cutter of the 1st category must enat: basic cutting techniques; device used burners, cutters, gearboxes, cylinders; colors of gas cylinders and rules for handling them; the main properties of gases and liquids used in metal cutting, and the rules for handling them.

2nd rank. Characteristics of works: oxygen and gas-electric rectilinear and curvilinear cutting in the lower position of the metal of simple and medium complexity parts made of carbon steel in compliance with the specified dimensions according to manual marking and on portable gas cutting machines, as well as on a copier on stationary machines; cutting steel heavy scrap; cutting risers and sprues for castings up to 300 mm thick with one connector and open rod marks.

The gas cutter of the 2nd category must know: the device of the equipment being serviced and the cutting tool; permissible residual gas pressure in cylinders; structure and properties of a gas flame; cutting techniques; requirements for gas cutting; measures to prevent deformations during gas cutting, the purpose and conditions for the use of special devices.

3rd grade. Characteristics of works: oxygen and gas-electric rectilinear and curvilinear cutting of sheet metal, pipes and rolled products in any position from carbon and alloy steel according to manual marking, on a copier and on stationary gas cutting machines; cutting risers and gates for castings of complex configuration with a thickness of more than 300 mm, having several connectors and open rod marks.

The gas cutter of the 3rd category must enat: the device of serviced stationary and portable gas cutting machines, hand cutters and generators of various systems; device of special devices; properties of metals and alloys subjected to cutting; requirements for copiers for machine curly cutting, and rules for working with them; accuracy tolerances for gas cutting and planing; the most favorable ratios between metal thickness, mouthpiece number and oxygen pressure; mode and consumption of gases during oxygen and gas-electric cutting.

4th grade. Characteristics of work: oxygen and gas-electric rectilinear and curvilinear cutting of parts of complex configuration from various steels, non-ferrous metals and alloys by marking on portable and stationary gas cutting machines; manual cutting of various steels, non-ferrous metals and alloys with cutting edges; oxygen-flux cutting of parts made of high-chromium and chromium-nickel steels and cast iron; bowl-shaped bilateral cutting of edges under manual welding.

A gas cutter of the 4th category must know: the device of serviced gas cutting machines with photoelectric and program control and a scale-remote device; the process of oxygen-flux cutting of alloyed steels; rules for cutting alloy steels with heating.

5th grade. Characteristics of work: oxygen and gas-electric hand-held precise cutting for marking parts of complex configuration from various steels and alloys with cutting edges for welding, including the use of special fluxes.

A gas cutter of the 5th category must know: the causes of thermal deformations during gas cutting and measures to reduce them; influence of gas and gas-electric cutting processes on the properties of metals.

Unified Tariff and Qualification Directory of Works and Professions of Workers (ETKS), 2019
Part No. 1 of issue No. 2 ETKS
The issue is approved by the Decree of the Ministry of Labor of the Russian Federation of November 15, 1999 N 45
(as amended by the Order of the Ministry of Health and Social Development of the Russian Federation of November 13, 2008 N 645)

gas cutter

§ 1. Gas cutter of the 1st category

Work examples

1. Ingots - cut off the bottom.

2. Corners, pipes - cutting.

§ 2. Gas cutter of the 2nd category

Job Description. Oxygen and air-plasma rectilinear and figured cutting in vertical and lower position of metal, simple carbon steel parts by manual marking on portable and stationary gas-cutting and plasma-arc machines. Manual oxygen cutting and cutting with petrol-cutting and kerosene-cutting machines of heavy steel scrap. Cutting risers and sprues for castings up to 300 mm thick with one slot and open core marks. Marking, selection by weight and profiles of simple oversized scrap, cutting to specified dimensions and stacking.

Work examples

1. Shoes of lifeline racks - cutting on the ship.

2. Rivets - cutting heads.

3. Wrenches, plugs - cutting on a copier.

4. Flat flanges - cutting on portable and stationary machines.

§ 3. Gas cutter of the 3rd category

Job Description. Oxygen and air-plasma straight and figured cutting of metals, simple and medium complexity parts made of carbon and alloy steels, non-ferrous metals and alloys according to manual marking on portable and stationary oxygen and plasma-arc machines for cutting in all spatial positions of the weld. Cutting risers and gates for castings with a thickness of more than 300 mm, having several connectors and open core marks. Marking manual, oxygen cutting and cutting with petrol cutting machines of obsolete cranes, trusses, beams, machines and other complex scrap to specified sizes according to the state standard with the release of non-ferrous metal waste and with the preservation or cutting out of units and parts of machines that can be used after repair.