Model used for assessing the environmental transfer of radionuclides from routine releases of IFIN-HH nuclear facilities

The paper presents the method developed in National Institute for Physics and Nuclear Engineering 'Horia Hulubei' (IFIN-HH) to assess the activity limits of radioactive discharges for the existing practice. The dose assessment approach is based on simplified but conservative models for environmental processes that takes account of dilution and dispersion of discharges. Quantitative results based on available site-specific information have been obtained by means of a FORTRAN computer code, which implemented the model. The obtained activity levels, submitted to the Regulatory Authority are used as input to the review process for establishing the authorized discharge limits and optimizing protection against ionizing radiation in accordance with new demand on waste management. (author)