OPTIMIZATION OF RELIABILITY MANAGEMENT STRATEGIES FOR POWER EQUIPMENT OF SAFETY RELATED SYSTEMS AT NUCLEAR POWER PLANTS

The concept of optimization of reliability management strategies for equipment of safety related systems at nuclear power plants is proposed. The concept is based on the principles of the priority of elements and phenomena critical for reliability, as well as on optimization criteria in the "reliability - costs" format. An example of the concept of optimization of reliability management strategies for the system with the pump (critical element) and the relatively minimal system reliability when it starts (critical phenomenon) is considered. The result found that a complex technical decisions / measures to reduce the inertia of the head-flow characteristics of the pumps and to install additional damping devices determine optimal reliability management strategy for such a system.