Principles Of Using Steel Cylinders

(1) High-pressure gas cylinders must be kept in separate locations, and they must be fixed and secure when placed upright; the gas cylinders should be kept away from heat sources to avoid exposure and strong vibration; generally, the amount of gas cylinders stored in the laboratory should not exceed two bottles.

a. On the shoulder of the cylinder, print the following mark with the manufacturer’s date of manufacture, cylinder model, working pressure, air pressure test, pressure, air pressure test date and the next delivery date, gas volume, and cylinder weight.

b. In order to avoid confusion when various steel cylinders are used, the steel cylinders are often painted in different colors, and the name of the gas in the cylinder is written.

(2) The pressure reducer selected on the high-pressure gas cylinder should be classified and dedicated, and the screw should be tightened during installation to prevent leakage; when opening and closing the pressure reducer and on-off valve, the action must be slow; the on-off valve should be turned before use , Then turn on the pressure reducer; after use, close the on-off valve first, and then turn off the pressure reducer after exhausting the remaining air. Never just turn off the pressure reducer and not turn off the on-off 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 and bump during operation, and always check whether there is any air leakage, and pay attention to the pressure gauge reading.

(4) Oxygen cylinders or hydrogen cylinders, etc., should be equipped with special tools, and contact with oil is strictly prohibited. Operators should not wear clothing and gloves that are stained with various greases or are easily induced to generate static electricity to avoid burning or explosion.

(5) Flammable gas and combustion-supporting gas cylinders should be more than ten meters away from the open flame (if it is difficult to reach, isolation and other measures can be taken).

(6) After used gas cylinders, the residual pressure should be above 0.05MPa as required. Flammable gas should remain 0.2MPa～0.3MPa (approximately 2kg/cm2～3kg/cm2 gauge pressure) H2 should be kept 2MPa to prevent danger when refilling, and it cannot be used up.

(7) Various gas cylinders must undergo regular technical inspections. Cylinders filled with general gas shall be inspected once every three years; if severe corrosion or serious damage is found during use, the inspection shall be carried out in advance.