Guide-lines for an early evaluation of a nuclear accident, calculated with the computer model park

For a nuclear accident where large areas are contaminated, it is necessary to predict the exposure of the population as early as possible in order to plan appropriate countermeasures. The radioecological computer model PARK (Program System for the Assessment and Mitigation of Radiological Consequences) is part of the German decision support system IMIS (Integrated Measurement- and Information System for the Surveillance of Environmental Radioactivity) for a fast assessment of contaminations and doses. In this paper PARK is used to investigate the dose relevance of the exposure pathways, of ingested radionuclides, and of foodstuffs in relation to the date of the event. (author)