【摘要】 ＰＲＥＳＤＳＡ程序是以本院野外试验场为假想处置库而开发的中低放废物浅地层处置安全评价计算机程序。该程序涉及源项释放，核素在地下水、地质介质及大气中的迁移，核素在食物链中的转移，以及剂量估算。评价方法采用目前应用较广泛的景象－后果分析方法；根据场址特征，选用了浸出和闯入两种释放景象。该程序采用了文件方式输入参数，用优化方法调整参数。根据实验现场资料，用国外同类程序与现场实验结果验证本程序的核素在地下水中迁移部分的计算结果，用计算方法验证了源项释放、食物链转移及剂量估算的结果。验证结果表明，本程序的计算结果准确、可靠更多还原

【Abstract】 PRESDSA is a computer program for calculating radiological impact of shallow land disposal of low and intermediate level radioactive wastes.The program is aimed at assessing the safety of the CIRP’s test site,which is a hypothetical repository located in north China.The disposal option is designed as a trench with an engineered construction made of reinforced concrete.10 kinds of nuclides are assumed to be present in the wastes to be disposed which are major ones in LLW and ILW.The program is coded on IBM personal computers or other compatible computers with MSDOS.Its source code used FORTRAN compiler language.It consists of six modules:SOURCE,WATERM,NESOR,AIRNT,FOODT and DOSEA.The release scenarios are considered in the program.The program is featured with convenienient selecting,agile input/output,and easier operation.Individual doses are calculated under four sets of conditions. (更多还原