COSYMA. Dose models and countermeasures for external exposure and inhalation

As one of the main objectives of the MARIA project (''Methods for Assessing the Radiological Impact of Accidents'') initiated by the program package COSYMA (COde SYstem from MAria'') for assessing the radiological and economic off-site consequences of accidental releases of radioactive material to the atmosphere has been jointly developed by the KfK, and the NRPB. COSYMA includes models and data for assessing a broad spectrum of accident consequences, and they are implemented in independent modules. The subject are those modules, which incorporate models and data for assessing individual and collective organ doses via external and internal exposure pathways and for quantifying the extent and duration of countermeasures including their dose mitigating effect. The flexible countermeasure modelling offers considerable freedom in specifying a wide range of emergency actions and criteria, what allows for consideration of most of the ntaional regulations in the different European countries. (orig./HP)