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Approaches to the Evaluation of Thermal-hygric Microclimatic Conditions in Selected Manufacturing Organizations

Andrejiová Miriam, Králiková Ružena, Piňosová Miriama, Rusko Miroslav

Advances in Science and Technology. Research Journal

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2019

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Vol. 13, no 2

14--23

EN

Attention was paid to the theoretical and empirical aspects of the evaluation of the thermal-hygric microclimate parameters of the working environment and their impact on the employees. The evaluation included questionnaire research, which involved two main areas: 1. Thermal-hygric microclimate conditions in the workplace; 2. Health problems of employees related to workplace conditions. The research was participated in by 200 employees working in manufacturing mechanical engineering organizations. The entry criterion for inclusion in the data set was the good health of the respondent, not suffering from serious health problems. The results of the evaluation showed that there is a statistically significant dependence between some of the monitored characteristics: between the age of the employee and the occurrence of monitored health problems (headache, feeling cold, spine pain), as well as between the work done and the satisfaction with the humidity of the workplace or with a feeling of dry nasal mucosa. The results of the questionnaire survey also showed a significant dependence between the type of manufacturing organization and the thermal and humidity conditions in the workplace or the occurrence of respondents’ health problems. In addition, a moderately positive relationship was found between thermal-hygric microclimatic conditions and the feeling of fatigue and headaches (or feeling of cold symptoms, spinal pain, and dry nasal mucous membrane). When evaluating the questionnaire research, statistical methods were used to monitor categorical dependence.

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Objective and subjective evaluation of the physical risk factors near a conveyor system

Piňosová Miriama, Andrejiová Miriam, Liptai Pavol, Lumnitzer Ervín

Advances in Science and Technology. Research Journal

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2018

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Vol. 12, no 3

188--196

EN

Currently, emphasis is still placed on risk evaluations of physical factors in workplaces. The aim of this paper was to evaluate objectively and subjectively the noise parameters and microclimate conditions near conveyor systems at the workplace for the handling and sorting postal items. Objective noise measurements were performed using the Norsonic 140 sound analyser, Class 1 and microclimatic conditions using the Testo 435 instrument. The subjective evaluation was performed by the questionnaire method (120; F: 66; M: 54). The result of the research was the assessment of health risks, depending on the sources of noise caused by conveyor systems.

3

Analysis and Classification of Noise Sources of Conveyor Systems by Sound Visualizing on the Postal Package Sorting Line

Liptai Pavol, Lumnitzer Ervín, Moravec Marek, Piňosová Miriama

Advances in Science and Technology. Research Journal

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2018

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Vol. 12, no 4

172--176

EN

Sound visualization tools are now widely used in industry. As a tool, acoustic cameras are also well- suited for faster identification of errors as well as individual states while operating devices. The aim of this paper was to locate and quantify noise sources on a packet sorting line using an acoustic camera and then to propose noise reduction measures. Localization of noise sources was performed by means of an acoustic camera with a microphone ring array. The result of these measurements and analyses was to sort the individual noise sources from less noisy to the noisiest, which gives a good assumption for better planning of spending on the implementation of noise reduction measures. The outputs of these measurements also give information on the character and frequency composition of the sound of individual sources, which will help out in the design of specific noise measures.