Integrated risk assessment method for spent fuel road transportation accident under complex environment

Current risk assessment of Spent Nuclear Fuel (SNF) transportation has the problem of the incomplete risk factors consideration and the general particle diffusion model utilization. In this paper, the accident frequency calculation and the detailed simulation of the accident consequences are coupled by the integrated risk assessment method. The man-machine-environment three-dimensional comprehensive risk indicator system is established and quantified to characterize the frequency of the transportation accidents. Consideration of vegetation, building and turbulence effect, the standard k-epsilon model is updated to simulate radioactive consequence of leakage accidents under complex terrain. The developed method is applied to assess the risk of the leakage accident in the scene of the typical domestic SNF Road Transportation (SNFRT). The critical risk factors and their impacts on the dispersion of the radionuclide are obtained. (C) 2020 Korean Nuclear Society, Published by Elsevier Korea LLC.

Automated summary

This paper utilizes an integrated risk assessment method to evaluate the risk of leakage accidents in spent nuclear fuel transportation, establishing a comprehensive risk indicator system and updating models to determine the critical risk factors and their impact on radionuclide dispersion.