How to identify the quality of double-layer oil storage tank

1. Check the tightness of the welding seam of the oil tank: remove the dirt on the pressure vessel and apply white powder emulsion. After drying, spray kerosene on the welding seam on the other side of the oil tank. If the kerosene is sprayed after 12 o'clock (the period can be extended when the temperature is low) and the appearance of the white-painted weld is not mottled, the weld meets the requirements.

2. Double-layer oil tank wall experiment: Carry out water filling experiment on the oil tank to see if the oil tank wall is tight. At the same time, you can also check whether the appearance of the oil tank wall plate and the weld is normal.

3. Check the wall thickness of the pressure vessel tank: the double-layer oil tank above ground is mainly selected by ultrasonic with higher power for inspection.

4. Magnetic flux leakage scanning to check the tank bottom: Use a magnetic flux leakage scanner to view the bottom of the oil tank. When the bottom plate of the oil tank is defective, the magnetic field dispersion will change and the sensor can also be seen. 5. Check the welding seam of tank bottom plate by vacuum leak test: when checking the bottom plate of oil tank. Apply soapy water to the welding seam and cover the vacuum box for observation.

6. Add dye to the water, check the leakage point in the water pressure experiment, listen to the sound on the wall of the double-layer oil tank or install the sound wave sensor on the tank wall, set up the survey well in the tank area to monitor, and use the dipstick to check the oil tank level , Leak detection.

7. The oil tank is used for leak detection of the pressure vessel according to the difference in the amount of input and output during the sending and receiving operations.