The developed technology allows to prevent or considerably reduce consequences of man-made emergency situations, including those caused by acts of terrorism: fires, explosions, increase of the level of chemically dangerous substances; increase of the level of radiation or biologically dangerous substances, sudden collapse of framework constructions. In Russia prevention of ES, caused by the accidents on PDO is one of the elements of the mechanism of legal regulation of man-made character ES and rather actual problem of the legislation. Partly, the problem of creation of such situations prevention mechanism in the legislation is solved.