Theoretical fundamentals of decontamination of the inner surface of the storage tanks

The article describes the reasons of hydrocarbon contamination and types of pollutions: surface and subsurface. The theoretical fundamentals of the decontamination process with the use of liquid СО 2 are considered. The formulas of quantitative evaluation of hydrocarbon contamination are presented. The mechanism of hydrocarbon decontamination of the surface and pore throats with the help of thermal «shock» and the «gas wedge» is proposed, the efficiency of cleaning is considered. The formula for determination of the time of the decontamination process has been calculated. The equation of continuity of fuel blasting process from the open pores of metal has been derived.