In the hot summer, as a common container for high-pressure gas storage, gas cylinders can be quite dangerous if they are not stored or used properly. Therefore, special attention should be paid to transporting gas cylinders during hot seasons. So what details should be paid attention to in the storage, transportation, and loading and unloading of gas cylinders recently?
Precautions for using gas cylinders
1. Gas cylinders should be stored in a cool, dry place away from heat sources (such as sunlight, heating, and fire). Combustible gas cylinders must be stored separately from oxygen cylinders.
2. Never allow oil or other flammable organic matter to stick to gas cylinders (especially valves and pressure reducing valves). Do not use cotton, linen, etc. to plug leaks to prevent accidents caused by combustion.
3. When using the gas in the gas cylinder, use a pressure reducing valve (barometer). Pressure gauges for various gases must not be mixed to prevent explosions.
4. Do not use up all the gas in the gas cylinder. Be sure to keep a residual pressure of more than 0.05MPa (pressure of the pressure reducing valve).
- In order to avoid confusion among various gas cylinders and use the wrong gas, the outside of the gas cylinder is usually painted with a specific color for easy identification, and the name of the gas in the cylinder is written on the bottle.
Precautions for handling, storing and filling high-pressure gas cylinders
1. When moving and storing gas cylinders, shock-proof washers should be installed and safety caps should be tightened to protect the switch valve, prevent accidental rotation and reduce collision.
2. When carrying gas cylinders filled with gas, it is best to use a special stretcher or trolley, or you can lift it horizontally or rotate it vertically by hand. However, it is never allowed to move the switch valve by hand.
3. When filling gas cylinders with gas, they should be properly fixed to avoid rolling collisions during transportation; when loading and unloading vehicles, they should be lifted and placed gently, and throwing, sliding or other methods that may cause collisions are prohibited.
4. Gas cylinders filled with gases that may cause combustion or explosion after contact with each other (such as hydrogen cylinders and oxygen cylinders) cannot be transported or stored in the same vehicle, nor can they be stored together with other flammable and explosive items.
- If the gas cylinder body is defective, the safety accessories are incomplete or damaged, and it cannot be guaranteed to be used safely, it must not be sent for filling gas. It should be sent to the relevant unit for inspection before use.
General principles for the use of high-pressure gas cylinders
(1) High-pressure gas cylinders must be stored in different places according to their classification and must be fixed securely when placed upright; gas cylinders must be kept away from heat sources and avoid exposure to sunlight and strong vibration.
a. On the shoulder of the cylinder, the following marks are stamped with a steel stamp: manufacturer, date of manufacture, cylinder model, working pressure, pressure test pressure, pressure test date and next inspection date, gas volume, cylinder weight
b. In order to avoid confusion when using various cylinders, the cylinders are often painted in different colors and the name of the gas in the cylinder is written.
(2) The pressure reducer selected for the high-pressure gas cylinder must be classified and dedicated. The screw buckle must be tightened during installation to prevent leakage; when opening and closing the pressure reducer and the switch valve, the action must be slow; when using, the switch valve should be turned first, and then the pressure reducer should be opened; after use, the switch valve should be closed first, and the remaining gas should be released before the pressure reducer is closed. Do not just close the pressure reducer without closing the switch valve.
(3) When using high-pressure gas cylinders, the operator should stand in a position perpendicular to the gas cylinder interface. It is strictly forbidden to knock or hit the cylinder during operation, and check for leaks frequently. Pay attention to the pressure gauge reading.
(4) Oxygen cylinders or hydrogen cylinders, etc., should be equipped with special tools and are strictly prohibited from contact with oil. Operators should not wear clothing gloves that are stained with various greases or easily induce static electricity to avoid combustion or explosion.
(5) The distance between flammable gas and combustion-supporting gas cylinders and open flames should be greater than 10 meters (if it is difficult to reach, isolation measures can be taken).
(6) After use, the cylinder should retain a residual pressure of more than 0.05MPa as required. The flammable gas should have a residual pressure of 0.2MPa to 0.3MPa. H2 should retain 2MPa to prevent danger when refilling, and it should not be used up.
- Various gas cylinders must be regularly inspected. Cylinders filled with general gases should be inspected once every three years; if they are found to be severely corroded or severely damaged during use, they should be inspected in advance.
