Research On Three-dimensional Field Of Marine Reactor

With the widespread use of marine nuclear power, the security of marine reactor nuclear is drawn more attention. Owing to its particularity,the radiation safety requests higher and more strict requirements. It is becoming a very important task to strengthen the radioactive protection of marine reactor. Marine reactor 3-d radiation field analysis under operational states and accident condition is one important part of nuclear safety analysis. It is helpful to ensure the safety radiation of personnel and improve the ability of the nuclear emergency, if the distribution of radioactive source term and characteristics of the radiation field in the cabin can be obtained in time.. In recent years, the 3-d radiation safyty analysis combined with visualization technology and virtual reality is drawn people's attention extensively,which also will bring better the research development on 3-d radiation of marine reactor.According to the actual operation experience of marine reactor and the characteristics of the design, a marine PWR model is established. The marine reactor source term and radiation field is calculated to perform the radiation safety analysis at different operation states and accident conditions.At first, The source term and its distribution characteristics in main equipments is calculated and analyzed by FCSC program. The radiation shielding calculation and dose distribution of marine reator cabin is obtained through QAD-CGA program. Then, the 3-dimensional radiation field data can be completely collected for the database. The 3D radiation field data is reconstructed, At last, the dynamic display of 3D radiation field visualization is performed in VisIt by using the volume rendering algorithm.