Abstract 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-e 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.

中文翻译：

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复杂环境下乏燃料道路运输事故综合风险评估方法

摘要 当前乏核燃料（SNF）运输风险评估存在风险因素考虑不完整和粒子扩散模型利用一般的问题。本文采用综合风险评估方法将事故频率计算与事故后果的详细模拟相耦合。建立并量化“人-机-环境”三维综合风险指标体系，表征交通事故发生频率。考虑植被、建筑和湍流效应，更新标准ke模型，模拟复杂地形下泄漏事故的放射性后果。将所开发的方法应用于国内典型的SNF道路运输（SNFRT）现场泄漏事故风险评估。