This monograph provides the latest Innovative direction on nuclear safety and safe nuclear power plants. Describes the Theory of Accidents and the ideology of Self-organization IT Systems that can ensure trouble-free operation of nuclear power plants. Described is a technology for prevention of emergencies at NPPs and TPPs to ensure the absolute security with full exception alarms emergency shutdown or unplanned outages of generating units, which ensures the absence of economic loss and attacking environmentalists. Describes a technique for creating self-organizing Information System Smart-MES, as well as the axioms of the Theory of Accidents, the logic of prevention of Accidents, the paradigm of self-organizing IT-System, structure, intelligence and multiagent system Smart-MES. The book is intended for students, scientists, Nuclear experts and IT areas, the management of Rosatom and the Ministry of energy, all those interested in problems of nuclear safety. Society planet will prefer all TPP, TPP and HPP clean nuclear power plant (NPP) because of their complete reliability and trouble-free!