Due to inspection and modification, the oil tank has been in use for a long time, resulting in severe sedimentation. The bottom of the tank has accumulated a large amount of impurities and moisture, and the inner wall is covered with many oil stains. These impurities and moisture can degrade the quality of the oil, affect the accuracy of oil calculations, accelerate the corrosion of the tank, and in severe cases, cause the bottom plate to perforate, leading to oil leakage accidents. Additionally, during the transportation of the oil, due to the abundance of impurities and moisture, static electricity is easily generated and accumulated, which can cause static electricity accidents. Therefore, the oil tank must be cleaned.