Overview of the modern Russian and International standards in the field of occupational health and safety management at an enterprise is presented. It is determined that the proactive method of assessing the state of working conditions at the enterprise has advantages over the post-event approaches to the development of corrective actions. The assessment is made concerning the application of the generalized Harrington desirability function, which has such properties as continuity, monotonicity, and smoothness. Based on this function, it is possible to assess the state and conditions of occupational safety and compare the indicators of various mining enterprises. GOST 12.0.230.3—2016 was analyzed, and the number of changes were proposed to the method of mathematical calculation. On the example of data provided by the Russian coal industry enterprise, an assessment was made related to the effectiveness and efficiency of the occupational health and safety management system. The values of the linguistic and numerical assessments of the state of the occupational health and safety management system are obtained. Graphic representation of the Harrington function with numerical and linguistic estimates superimposed on it is presented. The applied practices of internal and external audits of the occupational safety management system allow to identify deviations in its work, but they have rather long intervals between checks — from 1 to 3 years. The result of the performed analytical research is an improved methodology for assessment of the effectiveness and efficiency of the occupational safety management system, which allows to make this work more often, easier, and cheaper. Made calculations of the desirability index for a mining enterprise are an example, but they should be carefully analyzed by senior managers for assessment and decision-making. Practical recommendations on the use of the research results by the employer (head of the organization) to improve and develop the system management of occupational health and safety are presented.
Currently, occupational risk assessment at the workplace is a mandatory procedure. However, for qualitative and quantitative risk assessment, there is often not enough statistical data on negative health consequences. The issue of accounting the contribution of heterogeneous factors of the working conditions is also insufficiently studied. The article considers the workplace of a tunnelling machine operator for mining of high-viscosity oil, where the working conditions are rated class 3.2 (harmful of the second degree). The main contribution to the formation of harmful working conditions is made by the vibroacoustic factors, which is a consequence of the technological process in the oil sheds and maintenance of mining machines. Construction of a fuzzy model with two input vibroacoustic parameters (noise and general vibration), and an output parameter (sensorineural hearing loss as an occupational disease) is described. Modeling includes 4 stages: fuzzification; construction of the database of rules for fuzzy productions; composition using aggregation methods; defuzzification. Variant of fuzzification; of three selected parameters for assessing the risk to the personnel health is proposed: low, medium, high. In the interactive mode, the development and visualization of the fuzzy output system of the problem being solved using the graphical tools of the Fuzzy Logic Toolbox extension package of the MATLAB computer mathematics program was performed. As a result, the visual dependences of the output parameter on vibroacoustic factors are obtained: fuzzy output table, 3D-surface of the fuzzy output, functions of the dependence of the occurrence of sensorineural hearing loss from noise and general vibration. The proposed model can be supplemented with other input parameters that characterize the working conditions, thereby becoming more complicated at the fuzzification stage, refined at the stage of writing fuzzy production rules.
While conducting the ecological estimation of the hydro ecosystems (HE) condition of Tisza water basin, engineering ecological indices and their parameters are used. The system-basin research approach of the water basin based on systematization and data processing of the eco-logical monitoring for a long-term period is used. Such period allowed to set scientific regu-larities of naturally-anthropogenic hydro ecosystems development in the conditions of con-stant anthropogenic load on them.
In the work, based on the mathematical model of the estimation of secondary contamination by formaldehyde from the emissions of road transport, proposed by the authors, the formula for determining the concentration of HFC in the atmospheric air over automobile overpasses is obtained. Conducted calculations of average monthly concentrations of formaldehyde and indexes of uncarcinogenic danger. Risk for the health of population after existent normative classification certainly, as middle. Researches rotined the necessity of additional points of control in the system of monitoring of atmospheric air and introduction of the proper measures on diminishing of contamination from motor-car extrass. Keywords: concentration of formaldehyde, atmospheric air pollution, road overpasses, mathematical model, risk of non-carcinogenic pollution. В роботі, на підставі запропонованої авторами математичної моделі оцінки вторинного забруднення формальдегідом від викидів автомобільного транспорту, отримана формула визначення концентрації СНОН в атмосферному повітрі над автомобільними шляхопроводами. Проведені розрахунки середньомісячних концентрацій формальдегіду та індекси неканцерогенної небезпеки. Ризик для здоров‘я населення за існуючою нормативною класифікацією визначено, як середній. Дослідження показали необхідність додаткових пунктів контролю в системі моніторингу атмосферного повітря та запровадження відповідних заходів по зменшенню забруднення від автомобільних викидів. Ключові слова: концентрація формальдегіду, забруднення атмосферного повітря, автомобільні шляхопроводи, математична модель, ризик неканцерогенного забруднення.
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