1. The LNG cylinder should be placed in a well-ventilated place, not less than 1.5m away from the fire source. Do not use boiling water to bake or scald the gas cylinder. Frequently check the tightness of gas cylinder valves and pipe joints and keep them airtight. Check for air leakage with soapy water, and it is strictly forbidden to conduct air leakage test with open flame.

2. After a traffic accident, the vehicle LNG cylinders, valves and accessories should be checked and reused only after they are qualified.

Periodic inspection items for cryogenic gas cylinders include internal and external inspection, vacuum degree inspection, safety accessory inspection and calibration, pipeline and valve inspection, accessory assembly, air tightness test and static evaporation rate inspection. When the evaporation rate exceeds the standard, the shell is frosted or dew condensation, and the vacuum degree is lost, the vacuum degree of the LNG cylinder should be measured, and the measurement method should meet the requirements of the "Vacuum Insulation Low Temperature Equipment Performance Test Method" for vacuum degree measurement. The cylinders with unqualified vacuum should be re-evacuated, and the daily evaporation of the cylinders after vacuuming should be recalculated.

1. The air inspection of LNG (low temperature insulating gas cylinder, industrial Dewar flask) shall not exceed two years.

2. Safety accessories must conform to national standards or professional standards, and products produced by units with manufacturing licenses issued by special equipment safety supervision departments must be selected, and their models, specifications, and technical parameters must be clear. The safety accessories of the gas cylinder include: safety valve and pressure gauge, the safety accessories must be checked regularly, the safety valve calibration should be checked once a year, and the pressure gauge should be checked every six months!

2. Cylinders with the following conditions should be sent for inspection in advance

1. During use, it is found that the gas cylinder is seriously corroded, damaged or has doubts about its safety;

2. Gas cylinders with abnormal "condensation" and "frosting" on the outer surface during use;

3. Gas cylinders that cannot be used normally due to frequent tripping of safety valves;

4. After stopping use for more than one cycle, count or restart the gas cylinder;

5. Gas cylinders with unknown medium, valve failure or failure of safety accessories such as bursting discs;

6. The gas cylinder has been destroyed by an open flame.

gas connectors