What quality inspections are performed after the production of oil tank semi-trailers is completed?

The quality inspection contents of the tank trailer after production mainly include appearance inspection, liquid level inspection, bottom valve inspection, safety valve inspection, filter inspection, air tightness test, etc. 

·‌Appearance inspection‌: Ensure that the appearance of the tank truck is intact, check whether the body has paint loss, deformation or obvious cracks, and whether the bumper, rearview mirror, lower mirror and other parts are intact.

·‌Liquid level inspection‌: Verify the accuracy of the liquid level gauge, whether the electrical equipment is normal, and whether the sealing is good.

·‌Bottom valve inspection‌: Check the sealing, switch flexibility and oil leakage of the bottom valve.

·‌Safety valve inspection‌: Check the installation firmness, sensitivity and transmission mechanism of the safety valve.

·‌Filter inspection‌: Ensure that the filter is firmly installed, the filtering effect is good, and the resistance is normal.

·‌Air tightness test‌: Check the sealing performance of the tank truck by inflating or exhausting the air pressure difference to ensure no leakage.

These inspection steps are designed to ensure the safety and reliability of the tank trailer to ensure safety during transportation. If any problems are found during the inspection, they need to be repaired or replaced in time to ensure that the vehicle passes all inspections before use.

fuel oil gasoline tanker trailer.jpgCritical mass inspection of tanker trailers

 

·‌Water filling test: The water pressure test is mainly carried out by filling the tank with water and observing the pressure. Before the tank is pressurized for water pressure testing, it is necessary to confirm that the pipe joints, valves, covers and other joints are well sealed before the inspection can be carried out. Before the pressure in the tank drops to 0, the joints must not be disassembled to ensure safety.

·‌Air pressure test: The inspection is mainly carried out by pressurization. The inspector needs to connect the pressure gauge to the tank. After the pressure rises to a certain value, it is maintained for a certain period of time, and the changes in the pressure gauge are observed to determine whether there are leaks and other problems.

·‌Material test: The body of the tanker trailer tanker is generally made of corrosion-resistant alloy steel to ensure the sealing and protection of diesel. The inspection of the body material of the tanker needs to pay attention to its strength, corrosion resistance, pressure resistance and load requirements.

 

Improve safety through leak detection and prevention testing

 

In addition to the above test methods, there are other special tests for preventing leaks and failures. For example, the use of more advanced sound waves, radiography, etc. can improve the accuracy of the test.

·‌Ultrasonic testing: mainly through the reflection and propagation of ultrasonic waves. The inspector needs to place the ultrasonic probe on the surface of the tank, and then receive the reflected ultrasonic signal through the instrument, analyze the change of the signal, and judge whether the tank is defective or damaged.

·‌Radiation detection: mainly through the scattering and absorption of the ray when passing through the material. The inspector needs to place the ray source on one side of the tank, and then place the ray detector on the other side, collect the ray signal passing through the tank, analyze the change of the signal, and judge whether the tank is defective or damaged.

 

Summary

Strict quality control and inspection of tank trucks are to ensure the safety of vehicle operation and the accuracy of oil measurement. Since tank trucks are susceptible to external forces and natural factors for a long time, if they are not inspected and repaired in time, they may cause safety problems such as vehicle failure and oil leakage. Tank truck manufacturers need to continuously improve the quality control and testing of vehicles to achieve maximum safety.

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