EVALUATION OF RADIOLOGICAL CONSEQUENCES OF NUCLEAR ACCIDENTS WITH THECOMPUTER-MODEL PARK

Considering the radiological consequences of a nuclear accident, this paper investigates the dose relevance of the exposure pathways, ingest ed radionuclides and foodstuffs as relate to the season during which t he accident occurs. Assumed is an atmospheric release according to rel ease category no. 2 of the 'Deutsche Risikostudie Kernkraftwerke (DRS) : The calculations include the dry deposition (fallout) of radionuclid es as well as wet deposition (washout). Contaminations and doses to be expected in a distance of 200 km are calculated using the radioecolog ical computer model PARK (Program System for the Assessment and Mitiga tion of Radiological Consequences). In the case of a nuclear accident occurring in summer, ingestion is identified as the most relevant path way. Essentially, only a few radionuclides contribute to the ingestion dose. Results show that it is not recommendable to rely solely on exp erience gained from the Chernobyl event when assessing consequences of radiological accidents.