RESEARCH ON EFFICIENT RISK CALCULATION TECHNOLOGY FOR MULTI-TASK SCENARIOS BASED ON MINIMUM CUTSET

抄録

With the extensive development of risk-informed application and the gradual implementation of technical policies for configuration risk management, risk monitor has gradually shifted from the original offline operation state to the online operation state, that is, integrated into the production activities of nuclear power plants. The calculation speed of real-time risk is generally required to be within 1-2 minutes; The risk monitor used in domestic and foreign basically meet this requirement. However, in multi-task scenarios, such as a risk assessment of maintenance plan, such speed is still far from meeting the application requirements. In addition, how to update the risk monitor database quickly and efficiently is also a problem faced by the risk monitor. Based on the application scenarios and calculation speed requirements of risk monitor, this paper studies an efficient update method of database, an efficient algorithm of computing minimum cut set(MCS) and supporting multi-task scenarios after risk model reconstruction. Combined the latest computer technology, it improves the calculation speed of risk monitor, meets the speed requirements for efficient calculation of multi-task scenario risk, and provides data algorithm for the next stage of risk monitor development.