Liquefied petroleum tank trailers require special maintenance measures during transportation to ensure their safety and reliability. The following are several important maintenance measures:
Daily maintenance
- Appearance inspection: Before leaving the vehicle every day, a comprehensive inspection of the appearance of the tank trailer should be carried out, including whether the paint color and logo are intact, and whether the tank body has any leakage, bubbling, dripping, or leaking.
- Safety accessories inspection: Check whether the performance of safety accessories such as safety valves, pressure gauges, thermometers, liquid level gauges, various valves, pipe entry holes, grounding chains, and fire extinguishers is normal, and whether there is leakage and damage. Any abnormal phenomenon should be properly handled in a timely manner.
- Cleaning and maintenance: Keep the tank trailer clean, especially dust and oil stains on the surface of the tank body and equipment, to prevent corrosion and affect the normal operation of the equipment.
Regular maintenance
- Safety valve pressure setting: The pressure setting work of the safety valve shall not be less than once a year. The opening pressure and closing pressure during pressure setting shall comply with the regulations. After pressure setting, the pressure setting personnel shall seal it with lead and produce a certificate of qualification.
- Pressure gauge calibration: The pressure gauge connected to the tank should be inspected every six months to ensure that its accuracy meets the requirements.
- Level gauge maintenance: Regularly check whether the display of the level gauge is accurate and whether there is any leakage at the connection, and replace it if necessary.
-Filter cleaning: Clean or replace the filter screen or felt of the filter to ensure that it works well.
Special maintenance
- Emergency cut-off device inspection: Regularly check the performance of the emergency cut-off device to ensure that it can quickly cut off the connection between the tank and the outside world in an emergency.
- Anti-static device maintenance: Check the effectiveness of the static conductive mopping belt to ensure that it can conduct static electricity to the ground to prevent the generation of static sparks.
- Explosion-proof device inspection: Check the integrity of explosion-proof devices such as flame arresters and explosion-proof lighting equipment to prevent fires caused by static electricity or sparks.
Loading and unloading maintenance
- Pre-loading and unloading inspection: Before loading and unloading operations, check whether the fire protection devices, safety devices and accessories of the tank trailer are complete and applicable, and whether the fixing devices between the tank and the vehicle are firm.
- Post-loading and unloading treatment: After loading and unloading, immediately close the emergency shut-off valve and valve, check whether there is any leakage on each sealing surface, check the pressure and residual pressure of the medium in the tank, and ensure that there is no abnormality.
Emergency maintenance
- Emergency material preparation: Carry necessary emergency materials such as fire extinguishers, explosion-proof tools, leak detection instruments, etc. with the vehicle to respond quickly in case of emergency.
- Emergency drills: Organize emergency drills regularly to improve the emergency response capabilities of drivers and escorts for emergencies such as liquefied petroleum gas leaks and fires.
The above maintenance measures can effectively ensure the safety and reliability of liquefied petroleum tank trailers during transportation, reduce accident risks, and ensure the smooth completion of transportation tasks.