THE SECOND SAUDI INTERNATIONAL CONFERENCE ON NUCLEAR POWER ENGINEERING (SCOPE-2)

This paper presents an innovative methodology for analyzing and modeling fission product releases in Small Modular Reactors (SMRs) using the Probabilistic Model Chain Methodology (PMCM). The proposed approach integrates detailed site-specific meteorological data, reactor design parameters, and severe accident scenarios to enable more accurate predictions of radioactive plume dispersion and dose assessment. The methodology supports both deterministic and probabilistic Level 3 Probabilistic Safety Assessments (PSAs), allowing for improved definition of emergency planning zones. This contributes to enhanced public safety, more targeted emergency preparedness, and greater cost efficiency in the deployment of SMRs.