Saint Petersburg State University of Architecture and Civil Engineering, Saint Petersburg, Russia:

Nikulin A. N., Associate Professor, Head of Technosphere Safety Department, Candidate of Engineering Sciences, anikulin@lan.spbgasu.ru

Dose assessment of intermittent noise exposure of coal miners is carried out. The effectiveness of selecting personal hearing protection equipment (PHPE) by the value of the equivalent sound pressure level and by the dose assessment is compared. The proposed dose assessment procedure allows taking into account the transmitted energy during the action of noise, estimating the total noise load and correlating the obtained values with the excited biological effects. Since the acoustic efficiency of the PHPE selected based on special evaluation of working conditions is insufficient to protect workers from the increased-level noise, selection of the PHPE based on the dose assessment is carried out to ensure safety. It is found that the use of the PHPE selected according to the dose assessment can reduce the dose of noise received by miners during the shift down to allowable values. To ensure the safety of workers under the influence of the noise factor, the operators of mining and drilling machines should use the PHPE with an acoustic efficiency of 25 dB and 35 dB, respectively, which exceeds the acoustic efficiency of the PHPE selected from the special evaluation of working conditions by 10 dB. The dependence of the absorbed noise dose of coal miners in the increased noise exposure on the acoustic efficiency of the PHPE is revealed. It has been found that in order to prevent occupational diseases (sensorineural hearing loss) in underground miners, it is necessary to select the personal protective equipment for the hearing organ taking into account the dose assessment.

The authors express their gratitude to Algoritm-Akustika Company for the technical support of the measurements. This study is based on the R&D in the framework of the research grant competition between academic staff of the Saint Petersburg State University of Architecture and Civil Engineering.

1. Pototskii E. P., Firsova V. M., Sakharova E. A. Account of joint effect of the complex of harmful factors and analysis of the influence of production factor of chemical nature on the level of professional risk. Izvestiya vysshih uchebnyh zavedeniy. Chernaya metallurgiya. 2018. Vol. 61, No. 1. pp. 35–39.
2. Chemezov E. N. Industrial safety principles in coal mining. Journal of Mining Institute. 2019. Vol. 240. pp. 649–653.
3. Kobylkin S. S., Kharisov A. R. Design features of coal mines ventilation using a room-and-pillar development system. Journal of Mining Institute. 2020. Vol. 245, No. 5. pp. 531–538.
6. Nikulin A. N., Dolzhikov I. S., Stepanova L. V., Golod V. A. Assessment of noise impact on coal mine workers including way to/from workplace. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2021. Vol. 2. pp. 151–155.
7. Balakina N., Balakin A. Automation of the process of measuring and evaluating intermittent industrial noise. Bulletin of Science and Practice. 2021. Vol. 7, No. 4. pp. 231–235.
8. Klimova E. V., Semeykin A. Y., Nosatova E. A. Prospects for the introduction of micro training in the occupational safety management system. IOP Conference Series: Materials Science and Engineering. 2020. Vol. 753. 072009.

9. Shashurin A., Goguadze M., Lubianchenko A. Experimental studies on the noise and vibration of a special boring machine due to formation of the operator´s workplace sound field. Akustika. 2019. Vol. 34. pp. 100–103.
10. Bochkovskyi A. P. Actualization of the scientific principles elaboration on evaluating the risks of occupational danger occurrence. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2018. Vol. 6. pp. 95–103.
11. Gendler S. G., Rudakov M. l., Falova E. S. Analysis of the risk structure of injuries and occupational diseases in the mining industry of the far north of the Russian Federation. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2020. Vol. 3. pp. 81–85.
12. Butorina M., Oleinikov A., Kuklin D. Classification of railway lines by noise emission for noise protection design. Akustika. 2019. Vol. 32. pp. 231–237.
13. Alyanin R. F., Gallyamov M. A., Abdrakhmanova E. N. Industrial noise. Problems and solutions. Oil and Gas Business. 2019. No. 2. pp. 128–142.
14. Dreval Yu. D., Zaika S. O., Sharovatova O. P. et al. Fundamental principles of activity of international labour organization in occupational safety and hygiene. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2020. No. 6. pp. 89–95.
15. Ovchinnikova T. I., Pototskiy E. P., Firsova V. M. Risk-based approach to hazard assessment in the mining industry. GIAB. 2021. No. 2-1. pp. 199–208.
16. Rudakov M. L., Kolvakh K. A, Derkach I. V. Assessment of environmental and occupational safety in mining industry during underground coal mining. Journal of Environmental Management and Tourism. 2020. Vol. 11, No. 3. pp. 579–588.
17. Nikulin A. N., Nikulina A. Yu. Assessment of occupational health and safety effectiveness at a mining company. Ecology, Environment and Conservation. 2017. Vol. 23, No. 1. pp. 351–355.
18. Filimonov V. A., Gorina L. N. Development of an occupational safety management system based on the process approach. Journal of Mining Institute. 2019. Vol. 235. pp. 113–122.
19. Bochkovskyi A. Improvement of risk management principles in occupational health and safety. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2020. Vol. 6. pp. 94–104.
20. Ratar E., Denny H., Rahfiludin M. Comparative analysis between integrated occupational safety and health management system in a support mining company and the Indonesian mining safety management system. Indian Journal of Public Health Research and Development. 2019. Vol. 10(3). pp. 904–912.