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Revision Method of Potential Life Loss Calculation

机译:潜在寿命损失计算的修订方法

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The Potential Loss of Life (PLL) is one of significant indexes characterising risk using a quantitative risk assessment (QRA) methodology. Potential life loss (PLL) was defined as probability of a life loss in industry accident in the unit time, i.e. the probability of total fatality in the whole area of concern, by combining individual risk with the local population density. But this kind of case commonly appears, i.e. same PLL corresponding different population distributions. If the number of people exposed to a high risk increases a little, the PLL of total area would increases quickly. But in fact, the majority of people of total area are exposed to a low risk. How could we do to deal with these cases? This paper introduces the standard deviation factor of the PLL to revise the effect due to different population distributions, and introduces equity index forcing decision-making reasonable. An example demonstrated that PLL will be more reasonable after introducing standard deviation factor.
机译:潜在生命损失(PLL)是使用定量风险评估(QRA)方法表征风险的重要指标之一。潜在生命损失(PLL)定义为单位时间内行业事故中生命损失的概率,即,通过将个人风险与当地人口密度相结合,在整个关注区域内造成总死亡的概率。但是这种情况通常会出现,即相同的PLL对应不同的人口分布。如果面临高风险的人数略有增加,那么总面积的PLL将迅速增加。但是实际上,整个地区的大多数人面临的风险很低。我们该如何处理这些案件?本文介绍了PLL的标准偏差因数,以修正不同人口分布带来的影响,并介绍了合理的公平指标强制决策。一个例子表明,引入标准偏差因子后,PLL将更加合理。

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