Gas cylinders should not be placed near heat sources and should be kept at least 10 meters away from office and residential areas.
Gas cylinders should be protected from exposure to sunlight, rain, and water. When the ambient temperature exceeds 40 ℃, measures such as shading should be taken to cool down.
When using oxygen cylinders and acetylene cylinders, they should be placed separately, with a distance of at least 5m and a distance of 10m from open flames. Gas cylinders containing gases that are prone to polymerization or decomposition reactions, such as acetylene cylinders, should avoid open sources of radiation.
Gas cylinders should be used upright, and lying down is strictly prohibited. Measures should be taken to prevent tipping over.
Before using acetylene cylinders, they must be upright for 20 minutes before being connected to a pressure reducing valve for use.
Gas cylinders and accessories should be kept clean and dry to prevent contamination with corrosive media, dust, etc. Oxygen cylinder valves shall not be contaminated with grease, and welders shall not use tools, gloves, or oily work clothes contaminated with grease to come into contact with oxygen cylinder valves, pressure reducers, etc.
It is prohibited to contact gas cylinders with electrical equipment and circuits, and pipelines and equipment in contact with gas cylinders must have grounding devices. In a mixed gas and welding operation site, it is necessary to prevent the oxygen cylinder from being charged. If the ground is made of iron plates, wooden boards or rubber pads should be placed for insulation.
Acetylene cylinders should not be placed on rubber or other insulators.
When the valve or pressure reducer of the gas cylinder is frozen or frosted, it is not allowed to bake it with fire. The gas cylinder can be moved indoors or in a place with high temperature, or poured with warm water below 40 ℃, and then slowly open the valve.
It is strictly prohibited to use a heat source with a temperature exceeding 40 ℃ to heat the gas cylinder.
When opening or closing the bottle valve, use your hands or a special wrench, and do not use other tools to prevent damage to the valve components. Valves equipped with handwheels cannot use wrenches. If the valve is damaged, the gas cylinder should be isolated and repaired in a timely manner.
The opening or closing of the cylinder valve should be slow, especially for cylinders containing flammable gases, to prevent the generation of frictional heat or static sparks.
When opening the gas cylinder valve, people should stand on the side of the gas cylinder outlet.
During the use of acetylene cylinders, the special wrench for opening and closing the valve of the acetylene cylinder should always be installed on the valve.
When temporarily interrupting use, the valves of welding and cutting tools and acetylene cylinder valves must be closed. It is strictly prohibited to hold ignited welding and cutting tools to adjust the pressure reducer or open or close the valve of acetylene cylinders.
Special pressure reducers and flashback preventers must be installed at the outlet of the acetylene cylinder valve. When using a pressure reducer, it must be equipped with a clamping device combined with the bottle valve.
During normal use, the pressure drop of the acetylene cylinder's discharge should not exceed 0.1MPa/h. If a large flow rate is required, multiple acetylene cylinders should be used to supply gas together.
After using the gas cylinder, the valve should be closed, the pressure of the pressure reducer should be released, and the cylinder cap should be worn.
It is strictly prohibited to knock or collide with gas cylinders. It is strictly prohibited to perform arc welding on gas cylinders.
The gas inside the bottle must not be used up and there must be residual pressure left. The residual pressure of compressed gas cylinders should not be less than 0.05MPa, and liquefied gas cylinders should have a residual gas of not less than 0.5% to 1.0% of the specified filling amount.
Close the valve tightly to prevent air leakage and maintain positive air pressure.
Do not dispose of residual liquid in gas cylinders on your own.
In situations where backflow may occur, the equipment must be equipped with devices to prevent backflow, such as
