摘要
运用RESRAD程序对开放利用国内某极低放废物填埋场的辐射影响进行了评价。简述了RESRAD程序的基本原理、子模型和计算方法,分析了RESRAD程序场址特定参数的选取和处理。选定"农业居民用"情景,计算了填埋场关闭后进行开放利用对居住者的辐射剂量,并进一步分析了关键照射途径和关键核素。结果表明,开放利用这一特定填埋场,居住者最大年有效剂量为0.003mSv,是全球公众天然本底辐射剂量平均值的0.13%。短寿命放射性核素对剂量贡献很小;阻滞系数小的中长寿命放射性核素对剂量贡献大,且主要通过地下水途径对居住者进行照射;加强室内通风是减小氡辐射剂量的有效方式。
The radiological impact assessment of release utilizing a very low level waste landfill at home was carried out by using RESRAD program.The basic principles,submodels and calculation method of RESRAD program were outlined.The selection and processing of site-specific parameters were analyzed.Selecting resident farmer scenario,the effective dose of the resident was calculated after the landfill was open,and the critical pathway as well as the critical nuclides was analyzed further.The results show that,for this landfill the maximum effective dose per year is 0.003 mSv,0.13%of the average global public natural background radiation dose.There is small dose contribution for radioactive nuclides with short life,but large dose contribution for the nuclides with small retardation factor and middle or long-life.For the latter,the main exposure pathway is the underwater route,and enhancing indoor ventilation is an effective way to eliminate radiation dose of radon.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2014年第S1期743-749,共7页
Atomic Energy Science and Technology
