Collection Occupational hygiene, Issue 25, 1989 year

Features of the reaction of the body of adolescents to the combined effect of noise, temperature and labor intensity

T.Yu. Martynovskaya, O.A. Yavorskaya

doi

Kiev Research Institute of Occupational Hygiene and Occupational Diseases

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Assessment of the combined impact of factors of the working environment on the body of workers is an urgent task of occupational health.

The aim of this work is to study the characteristics of the reaction of the adolescent body to the impact of production factors.

It is known that the body of adolescents is highly sensitive to the effects of production factors. Literature data indicate that the combined effect of factors of the working environment when working on modern agricultural machines causes more pronounced changes in the body of 17-year-old adolescents than in persons aged 18 years [1]. The influence of the above factors on 16-year-old adolescents is currently insufficiently studied. At the same time, it is at this age that adolescents begin their industrial practice. In this regard, it seemed appropriate to study the characteristics of the reaction of their bodies to the combined effect of such production factors as noise, temperature and labor intensity.

To reveal the quantitative dependence of changes in the studied physiological parameters on the levels of influencing factors, regression analysis was carried out. It was found that the most significant factors are: for auditory sensitivity - noise; for heart rate - air temperature, noise and intensity; for the weighted average skin temperature - air temperature, noise and tension; for muscle endurance - noise.

If we take into account the fact that the minimum noise level when working on modern agricultural machines (MTZ-142, T-70S, LTZ-145, T-25A) is 85 dB A, then taking into account the dose approach to assessing industrial noise, the duration of continuous work of 16-year-olds on tractors of this type should not exceed 30 minutes, provided that the levels of exposure to other factors (temperature, work intensity) correspond to hygiene standards. Under the influence of these factors at levels exceeding the maximum permissible, the duration of the teenager's continuous work on the tractor should be further reduced. It is undesirable to allow adolescents of this age to work on tractors where the noise level at the workplace exceeds 85 dB A.

References

1. Buzunov V.A. Influence of noise and temperature on the body of adolescents when working on tractors // Hygiene and sanitation. - 1980. - No. 9. - S. 31-33.