SMART-IST: a Computer Program to Calculate Aerosol and Radionuclide Behaviour in CANDU Reactor Containments

Abstract

The SMART-IST computer code models radionuclide behaviour in CANDU reactor containments during postulated accidents. It calculates nuclide concentrations in various parts of containment and releases of nuclides from containment to the atmosphere. The intended application of SMART-IST is safety and licensing analyses of public dose resulting from the releases of nuclides. SMART-IST has been developed and validated meeting the CSA N286.7 quality assurance standard, under the sponsorship of the Industry Standard Toolset (IST) partners consisting of AECL and Canadian nuclear utilities; OPG, Bruce Power, NB Power and Hydro-Québec. This paper presents an overview of the SMART-IST code including its theoretical framework and models, and also presents typical examples of code predictions.