Assessment of the Occupational Disease based on the Full Range of Outcomes «Ammonia Poisoning — Suffocation — Death»


Within the framework of the factors — protection — employee system, the following line of possible outcomes «poisoning — suffocation — death» was considered and tested according to the degree of danger, a parametric model of the type «exposure — attenuation — susceptibility» was proposed for their standard description and application. As susceptibility parameters, it is proposed to take the experimental, statistical, or calculated values of the ammonia concentration, which, with a known level of confidence, determine the possibility of the occurrence of outcomes in the declared line. One or more ammonia concentrations measured with known accuracy are taken as exposure parameters in a particular system, taking into account the weakening of the employee protection. Based on the introduced parametric model and initial data, both on the expression of exposure and susceptibility in the form of random variables, and data on the efficiency of protection, a set of probabilities of outcomes of the declared line was calculated, which can be used to predict the risk of employee diseases in a particular system or production environment. In addition, it is shown that in the resulting assessment of the probable lethal outcome, both poisoning and suffocation of the worker are also considered. By protecting the worker and reducing exposure by attenuating it at levels between 1 and 0.1, the expected reduction in ammonia concentration results in a decrease in the probability of an employee death from 0.9177 to 0.000003. Moreover, it is shown that the acceptable values of the attenuation coefficient should be in the range of 0.1 or less. This level of attenuation is achieved by using local ventilation, diluting the concentration of ammonia in the work area with fresh air and (or) by using personal protective equipment (gas mask) by the employee.

1. Marchenko D.V. First aid case of injuries and accidents. Rostov-on-Don: Feniks, 2009. 314 p. (In Russ.).
2. Pustovaya L.E., Meskhi B.Ch. Methods and devices for monitoring the environment. Ecological monitoring: textbook. Moscow: INFRA-M, 2022. 246 p. (In Russ.).
3. GOST R 56257—2014. External environmental impact characterization. General classification. Available at: (accessed: June 10, 2022). (In Russ.).
4. Kochetkova S. Two people died, six suffered from ammonia poisoning on the Don. Available at: (accessed: June 10, 2022). (In Russ.).
5. Bolotin V.V. Statistical methods in structural mechanics. 2-e izd., pererab. i dop. Moscow: Stroyizdat, 1965. 279 p. (In Russ.).
6. Ryabinin I.A. Reliability and safety of structurally complex systems. Saint-Petersburg: Politekhnika, 2000. 248 p. (In Russ.).
7. Esipov Yu.V., Mishenkina Yu.S., Cheremisin A.I. Models and indicators of technosphere safety. Moscow: INFRA-M, 2018. 154 p. (In Russ.).
8. Pospelov D.A. Situational management: theory and practice. Moscow: Nauka, 1986. 288 p. (In Russ.).
9. Esipov Yu.V., Boukhezna B.E., Dzhilyadzhi M.S. Method of Assessing the Integral Risk on the Example of the system «GL2Z Enterprise — Hazardous and Harmful Factors — Employees». Bezopasnost Truda v Promyshlennosti = Occupational Safety in Industry. 2021. № 10. pp. 77–81. (In Russ.). DOI: 10.24000/0409-2961-2021-10-77-81
10. Orlovskiy S.A. Decision-making problems at fuzzy initial information. Moscow: Nauka, 1981. 208 p. (In Russ.).
11. Table of values of the Laplace function. Available at: (accessed: June 10, 2022). (In Russ.).
12. On special assessment of the working conditions: Federal Law of December 28, 2013 № 426-FZ. Available at: (accessed: June 10, 2022). (In Russ.).
13. Esipov Yu.V. The concept of a possible risk assessment of the technogenic systems. Avtomatika i Telemekhanika = Automation and Telemechanics. 2003. № 7. pp. 5–12. (In Russ.).
DOI: 10.24000/0409-2961-2022-8-48-54
Year: 2022
Issue num: August
Keywords : professional disease аммиак отравление концентрация fatality suffocation susceptibility exposure