Details

The subject of the graduate qualification work is «State of the Art Development trends in Uncertainty Safety Analysis of Dose Assessment for Nuclear». This work is focused on making comprehensive review of the uncertainty safety analysis of dose assessment in Nuclear Power Plants, particularly in the event of accidents and the specific tasks are: 1. Review of radiological assessments related to the Fukushima Daiichi nuclear disaster (FDND). 2. Comprehensive classification of published articles on uncertainty dose analysis 3. Evaluating the uncertainty in dose assessment post-NPP accidents. The catastrophic events that can arise from nuclear power plant accidents have made the accurate assessment of radiation dose to the public and environment a critical component of nuclear safety. However, inherent uncertainties in dose assessment due to measurement limitations, modeling flaws, and parameter estimation mistakes warrant a comprehensive analysis to ensure the reliability of safety evaluations. This thesis examines the state of the art in managing uncertainties within the context of dose assessments following NPP accidents, with a specific focus on development trends aimed at improving these assessments. Initially, the study touches into the radiological assessment related to the Fukushima Daiichi nuclear disaster, providing an in-depth review of the accident and its subsequent dose assessment methodologies while highlighting the encountered uncertainties. A comprehensive review of existing literature follows, discussing the various forms of uncertainty in dose assessment and identifying research trends and knowledge gaps. The research then evaluates the existing methods through case studies, comparing different NPP accident dose assessments, and examining how uncertainties have been addressed in past events, particularly in terms of their impact on public safety decision-making. Lastly, emerging technologies and techniques in the field of uncertainty safety analysis are explored, and recommendations for enhancing uncertainty management in dose assessments are given, along with proposed directions for future research. Overall, the thesis aims to consolidate the current understanding of uncertainty in dose assessments post-NPP accidents and to contribute to advancing the fields capacity to safeguard public and environmental health in the face of potential nuclear threats. To achieve these results, the materials utilized include a vast array of published articles, regulatory documents, and existing uncertainty analysis studies pertinent to the field of nuclear accidents. MS office (Word and PowerPoint) was used for creating thesis final report as well as presentations.