ESTE ANNUAL IMPACTS-SYSTEM FOR ASSESSMENT OF RADIOLOGICAL IMPACTS OF OPERATIONAL DISCHARGES FROM NUCLEAR FACILITIES.

Described are models and approaches of the software tool ESTE Annual Impacts, a system for analyzes of radiological impacts of operational discharges to the atmosphere and hydrosphere from nuclear facilities. As a result, evaluated are radiological impacts to the population (to representative person and collective doses) and the environment (plants and animals). Described are models applied for calculation of dispersion in the atmosphere and hydrosphere (river, dam, sea). Method of application of sea currents for dispersion calculation in marine environment is also presented. The system is used by operators of the operated and decommissioned nuclear facilities at the site Bohunice (Slovakia), by regulatory authority of the Czech Republic for facilities at the sites Dukovany and Temelín and by operator of the Bushehr Nuclear Power Plant (Iran). In addition, the system is tool for analyses of environmental impacts assessments, applied in environmental impacts assessments process for newly prepared nuclear sources in Slovakia and Czech Republic.