Quantitative occupational risk model: Single hazard
Abstract A model for the quantification of occupational risk of a worker exposed to a single hazard is presented. The model connects the working conditions and worker behaviour to the probability of an accident resulting into one of three types of consequence: recoverable injury, permanent injury and death. Working conditions and safety barriers in place to reduce the likelihood of an accident are included. Logical connections are modelled through an influence diagram. Quantification of the model is based on two sources of information: a) number of accidents observed over a period of time and b) assessment of exposure data of activities and working conditions over the same period of time and the same working population. Effectiveness of risk reducing measures affecting the working conditions, worker behaviour and/or safety barriers can be quantified through the effect of these measures on occupational risk. Highlights Quantification of occupational risk from a single hazard. Influence diagram connects working conditions, worker behaviour and safety barriers. Necessary data include the number of accidents and the total exposure of worker Effectiveness of risk reducing measures is quantified through the impact on the risk An example illustrates the methodology.
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