Abstract: There are some problems existed in the oil loading system of Shanshan tank farm, for example, the opening/closing control of ball valve is not suited to the adjustment of oil loading flowrate; the pressure of loading line is too high (overpressure); many flange gaskets and telescopic joints are easy to break down. In the light of these problems, three technical reforms have been made. And after that, the above problems, including the problem of overpressure, are solved, the reformed oil loading system has realized automatic adjustment control.