Abstract
Due to the limitation of space size and weight, the design of Marine nuclear power plant should be small and light as far as possible. In this method, the Reliability Methods for Passive Safety Functions is used to calculate the transfer of the passive residual heat removal system under 95% confidence interval in limiting condition. The heat transfer interval is taken as the performance constraint of the optimal design of the passive residual heat removal system. A penalty function genetic algorithm based on elite retention strategy was used to optimize the weight of passive residual heat removal system. The results show that the mathematical and physical model proposed in this paper is effective for the weight optimization of the passive residual heat removal system, and the optimization effect is obvious. The weight of the passive residual heat removal system is reduced by 4.2076% under the premise of satisfying the constraints. It provides a direction for improving the economy of nuclear power plant.
