Presented are lour stages of reconstruction and modernization of Mozirskiy refinary, caused by market relationships development, objective need for oil products sales expansion, stiffening of oil products quality requirements on the world market, as well as on Russia and SIC markets. Each stage presents by itself a separate project, targeted for the increase of light oil products output, their quality enhancement. However, ail stages are closely related to each other because of the common objective: realization of catalitic cracking construction project utilizing up to date technologies of leading companies. Presented are volumes of basic fuel types production after completion of refinary reconstruction with overall capacity of 6 million tones of oil per year.