不同运输方案下乏燃料运输的辐射影响

Radiation effects of spent fuel transport under different transport modes

目的研究不同运输方案下将乏燃料从广东运至西北地区的辐射影响。方法使用CRAMTRA 1.0程序,分别对不同运输方案下的乏燃料运输所致代表性公众和工作人员的辐射剂量进行了计算。结果每吨乏燃料外运致公众集体有效剂量,长途道路运输的辐射影响最大(1.65×10^(-3)人·Sv/t),道路-海洋-铁路联运方案的辐射影响最小(2.63×10^(-4)人·Sv/t),道路-铁路联运方案的辐射影响居中(4.51×10^(-4)人·Sv/t)。长途道路运输方案,对工作人员造成的职业照射的集体有效剂量(6.00×10^(-1)人·Sv/t)要明显高于道路-铁路联运(7.93×10^(-2)人·Sv/t)和道路-海洋-铁路联运(1.05×10^(-1)人·Sv/t)方案。结论道路-海洋-铁路联运的辐射剂量影响相对较小。

Objective To study the radiation effects of spent fuel transportation from Guangdong to northwest region under different modes. Methods Using the CRAMTRA 1. 0 code,radiation doses of spent fuel transportation under different modes on the typical public and workers were calculated. Results The public collective effective dose per ton of spent fuel delivered to the public had the greatest impact on long-distance road transport(1. 65 × 10（-3） Sv/t）,while the Road-Ocean-Rail transport mode had the least radiation impact(2. 63 × 10（-4） man·Sv/t）,and the radiation impact of Road-Rail transport mode was the middle(4. 51 × 10（-4） man·Sv/t）. The long-distance road transport mode had a significantly higher occupational exposure to workers(6. 00 × 10（-1） man·Sv/t） than that of Road-Rail transport mode(7. 93 × 10（-2） man·Sv/t） or Road-Ocean-Rail transport mode(1. 05 × 10（-1） man·Sv/t）. Conclusion The radiation effects of Road-Ocean-Rail transport mode is relatively small.