2. Check equipment, accessories and pipeline leaks. When testing with soapy water only, it is strictly forbidden to open fire, smoke or test with fire.
3. The distance between the oxygen cylinder, the acetylene bottle and the open flame is more than 10 meters. If the condition is limited, it is not allowed to be less than 5 meters, and isolation measures should be taken.
4. It is forbidden to use a tool that is easy to generate sparks to open the valve of oxygen or acetylene bottle;
5. The welding site should have corresponding fire-fighting measures. The open-air operation should prevent direct sunlight on the oxygen bottle or acetylene bottle.
6. After work or leave the work site, screw on the gas cylinder helmet, clean up the site, and place the gas cylinder at the designated location.
7. Pressure vessels and pressure gauges, safety valves shall be regularly sent for verification and inspection according to regulations.
8. It is strictly forbidden to use substitutes without pressure test and hoses with deterioration, aging, brittle fracture, leaking gas and grease.
9. The oxygen hose is red, and the acetylene hose is black. It should not be used when connecting to the torch.
10. When the oxygen and acetylene hoses are detached or ruptured during use, the valve should be closed immediately.
11. It is forbidden to put the rubber hose in the temperature pipe and the wire, or press the heavy and hot objects on the hose, and do not lay the hose together with the wire for welding.
12. Oxygen and acetylene bottles must be equipped with two anti-vibration rubber rings. They must be stored separately from other flammable gas bottles, greases and other flammable materials. They are not allowed to be transported in the same vehicle.
13. Oxygen bottles and acetylene bottle accessories are faulty or defective. The valve screw should be stopped when it is slipped. It should be placed on the fixed bracket when it is used upright to avoid accidents.
14. It is forbidden to use oxygen cylinders and acetylene bottles without pressure reducer.
15. The gas in the oxygen cylinder and acetylene bottle is not allowed to be used up. At least 0.5 kg/cm2 of residual pressure should be left.
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