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预测NaTech事件的后果:通过先进的污染物分散模型支持的职业短期吸入风险
Marco Ravina1, Marta Brignone1, Federico Urbinati1
1Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Torino, 10129 Italy.
Integrated environmental assessment and management
|June 26, 2025
概括
本研究介绍了用于工业场所的NaTech风险评估方法. 该模型模拟意外释放,并计算吸入风险,仅在排放源发现超标.
科学领域:
- 环境科学 环境科学
- 工业安全 工业安全 工业安全
- 风险评估 风险评估
背景情况:
- 工业场所面临自然灾害引发的技术事故 (NaTech) 的风险.
- 意外释放有毒物质对工人造成吸入风险.
- 预防性风险评估对于工业安全至关重要.
研究的目的:
- 提出一种方法,用于预防性评估工业场所意外释放有毒物质的吸入风险.
- 应用和验证方法,使用涉及四二释放的案例研究.
主要方法:
- 纳泰克序列建模,包括事件和地点的表征.
- 使用并行微速喷雾 (PMSS) 模型模拟意外释放,池蒸发和污染物分散.
- 通过平均度和与职业暴露限值进行比较来计算短期风险.
主要成果:
- 污染物分散受风速,风向和大气条件的影响.
- 随着距离源的距离,四二的度迅速下降.
- 吸入危险系数 (HQ) 超标仅在排放源发现.
结论:
- 拟议的方法提供了在工业环境中进行预防性风险评估的实用方法.
- 该模型适用于有限的计算资源.
- 风险评估结果对建模选择和值限制值很敏感.
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