Methodological approaches to the integrated evaluation of the exposure and length of service in the occupational risk assessment

Abstract

Methodical approaches to the integrated evaluation of the exposure and length of service in occupational risk assessment have been proposed. There are: the identification of hazards with a specific assessment of working conditions; the establishment of the occupational dependence of the health disorders in workers on the base of the results of epidemiological studies; quantitative risk assessment, taking into account the work experience factor on the basis of a mathematical model “exposure - work experience - response probability”; the establishment of quantitative risk characteristics, taking into account the dynamics of changes in health status over time, as well as the assessment of an integral risk of accumulation of the body functional disorders on the basis of the risk evolution modeling. When testing an integrated risk assessment approach for the workers occupied in underground mining, there was revealed the occupational dependence both for respiratory diseases (RR = 1.75) and disorders of the circulatory system (RR = up to 1.69). The work experience determination of the occupationally chronic rhinitis and rhinopharyngitis (J30- J31) has been established as well as the predictable probability of the development of hypertension after 5 working years as 0,094, after 10 years -0,179 has been detected. The risk of health problems under exposure to occupational factors becomes unacceptable (R) by 45 years. In this the risk for the occurrence of the circulatory disorders is critical.