Study On Key Technologies Of Three-dimensional Real-time Simulation For Large-scale Radiation Scenario

To meet the increasing nuclear safety standards, the designers and staff have to solve the problems and challenges of designing the work strategy and staff training, in the large-scale construction and commissioning of new type nuclear power plant and the operation, maintenance, decommissioning of active nuclear power plant and so on. With the rapid development of information technology, innovative applications of new information technologies were increasingly expanded. The immersive real-time simulation could realistically simulate the working environment, interactively experience operational processes. It was an important resultion for rapidly designing and analysising the operational processes, reducing the radiation hazards and virtual staff training. But, there are some problems still exist and need to be solved, such as the three-dimensional scene radiation scenario can not be real-time rendering for numerous and complicated structure model, the lack of convenient and efficient three-dimensional human-computer interaction, personnel absorbed radiation dose assessment takes serious time.Based on the Super Monte Carlo Simulation Program for Nuclear and Radiation Process (SuperMC), the key technology researchs of three-dimensional real-time simulation of the large-scale radiation scenarios were conducted. The main research contents and innovations are as follows:1) A series of key technologies were developed for the three-dimensional real-time simulation of large-scale radiation scene, including building and real-time rending of the three-dimensional large-scale radiation scenarios based on K-dimensional tree, stereo display by using binocular vision, the three-dimensional human-computer interaction interface design, and so on.2) The multiplayer real-time collaboration radiation dose evaluation method was proposed and implemented based the compute unified device architecture (CUDA). Based on CUDA stream processors, shared memory, parallel computing hardware framework and process models, the computing time could be significantly reduced with millions of voxel and the dose calculation could be to synchronize with real-time simulation of maintenance process.3) The high immersive real-time interactive simulation prototype system was design and constructed, and applied to the Accelerator Driven Sub-critical System. The design and validation of the refueling machine maintenance and replacement strategy was tested on the system. The three-dimensional real-time simulation could realize the immersive experience the operation process and assess absorbed radiation dose. It would be more important and imperative for improving the design and verification efficiency, the auxiliary operation optimization and enhancing personal radiation safety awareness in the future.