大型核动力船舶船员剂量评价体系研究

Research on Crew Dose Assessment System for Large Nuclear Power Ships

建立船员的剂量评价体系是实现我国核动力商船等发展规划亟待解决的关键技术之一。对船员人数最多、人员编制最复杂和辐射防护涉及面最广的大型核动力船舶开展了研究,提出了大型核动力船舶船员剂量评价体系。该剂量评价体系参照国际辐射防护委员会和国际原子能机构推荐的方法建立,包括基本剂量量、剂量限值和参考水平以及剂量计算和监测3大块,覆盖计划照射和潜在照射2种情况,能够满足前瞻性、实际性和回顾性全部3个阶段的船员剂量评价需求。另外,该剂量评价体系还给出了船员剂量评价的具体方法,如需考虑的辐射源和照射途径,应使用的模型、量和取值等。

Establishing a crew dose assessment system is one of the key techniques to be solved urgently in the development planning of the nuclear power mechant ships in China. Research was carried out on large nuclear-powered ships with the largest number of crew members, the most complex staffing and the widest coverage of radiation protection.A dose assessment system for crew memebers on large nuclear power ship is given in this paper.The dose assessment system is constructed according to the methods recommended by International Commission on Radiological Protection and International Atomic EnergAgency,including basic dose quantities, dose limits and reference levels,and dose calculation and measurement,covering planned exposure and potential exposure,which can meet the demand of crew dose assessment in forecast dose, actual dose and review.Further more,the detailed measures used to estimate the crew dose is presented in the dose assessment system,such as the radiation sources and exposure pathways need to be considered,the model,quantity and values should be applied.