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应用混合堆放射性计算程序FDKR和衰变链数据库AFDCDLIB,计算了托卡马克实验混合堆FEB (Fusion Experimental Beeder)概念设计中活化产物、裂变产物和锕系元素的放射性、衰变余热和潜在生物危害因子BHP值。计算的结果表明,对于FEB设计来说,在150MW聚变功率下运行一年,停堆时刻的总放射性、余热和BHP值分别为5.74×10~(20)Bq,8.34MW和4.08×10~8km~3(空气)。放射性核废物处置的计算结果还表明:FEB的结构材料在卸出后的短时间内,可满足美国联邦法规10CFR61的C级(近地浅埋)核废物处置标准。对混合堆包层中的重要锕系元素~(232)U,~(237)Np的含量也作了计算分析。结果表明:它们的浓度值均不超过环境安全要求的限制值。文章还就混合堆的环境安全问题,与其它的核能装置如PWR进行了比较分析,表明混合堆不存在突出的环境安全问题。
The radioactive, decaying residual heat and potential biohazard factor (BHP) of activated product, fission product and actinide in conceptual design of FEB (Fusion Experimental Beeder) were calculated by using hybrid staging radioactivity calculation program FDKR and decay chain database AFDCDLIB. value. The calculated results show that the total radioactivity, residual heat and BHP at shutdown are respectively 5.74 × 10 ~ (20) Bq, 8.34MW and 4.08 × 10 ~ 8km for the FEB design with one year operation at 150MW fusion power ~ 3 (air). Calculations of disposal of radioactive waste also show that FEB’s structural materials meet the US Class 10 CFR61 Class C (near-surface shallow) nuclear waste disposal standard shortly after discharge. The contents of ~ (232) U and ~ (237) Np, which are important actinides in the composite cladding, were also calculated and analyzed. The results show that: their concentration values do not exceed the environmental safety requirements of the limit value. The article also compares the environmental safety of the hybrid reactor with other nuclear power plants such as PWR, which shows that there is no outstanding environmental safety problem in the hybrid reactor.