1. The use and installation of compressed natural gas cylinders for automobiles should comply with the relevant standards, and should be refitted and repaired by a formal refitting factory with CNG auto refitting qualification issued by the province, including installation and disassembly of gas cylinders. It is strictly forbidden for unqualified units to modify, repair, disassemble and inspect the gas cylinders. Do not dig, repair, weld and repair the gas cylinders. The original manufacturing labels and nameplates of the gas cylinders should be complete, the content should be complete, and the steel seal should be clear; No permanent deformation, the bottle valve should be intact;

2. The safety status of the Gas Cylinder and its accessories should be checked before and after filling; the filled gas must undergo dehydration, desulfurization and light oil removal. .Overpressure filling is strictly prohibited, the natural gas in the bottle must not be used up, and a residual pressure of more than 0.1 MPa must be left; the working pressure of the gas cylinder is the limited filling pressure at the reference temperature (20℃), and the filling pressure of the gas cylinder should be Adjust according to the actual air temperature during inflation, and its temperature compensation value should be in accordance with the regulations of the inflatable station. The new gas cylinder should be vacuumed before the first inflation;

3. During the use of the cylinder, it is found that the amount of air added does not match the usual mileage, or if the pressure in the cylinder drops significantly after a period of exercise, you should be vigilant and check for leaks in time. When there is serious corrosion, damage or doubt about its safety, inspection should be carried out in time;

4. The composite material layer of the gas cylinder is strictly prohibited from scratches, bumps and acid corrosion. Isolating rubber pads should be used between the gas cylinder and the fastening band and the mounting bracket and should be well tightened. The worn and deformed rubber pads should be replaced in time . Take care to protect the winding layer of the wound cylinder, keep the surface clean, and prevent chemical corrosion; do not put hard objects in the trunk to avoid bumps or knocks on the surface of the cylinder. Do not place heavy objects on the gas system pipes;

5. It is forbidden to contact with grease, chemicals, hardware and other substances. Scratching, knocking, corrosion and squeezing are strictly prohibited. Gas cylinders must not be close to heat sources or exposed to sunlight. The distance from open flames should generally not be less than 10 meters, and gas cylinders must not be impacted. ;

6. The back box where the gas cylinder is located should be used as little as possible or not used with electrical components. If it must be used, it should also have explosion-proof performance and be installed as far away as possible from the gas cylinder.

7. Frequently check the leaky interfaces of the gas cylinder, the inflation valve and the pressure reducer;

8. When the valve of the gas cylinder is frozen, it is strictly forbidden to bake it with fire. It is strictly forbidden to heat the gas cylinder with a heat source exceeding 40℃; it is strictly forbidden to conduct arc welding on the gas cylinder;

9. Isolation rubber pads should be used between the gas cylinder and the fastening straps and mounting brackets and should be well tightened. The worn and deformed rubber pads should be replaced in time;

(6) Other abnormal conditions occur.