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  • Küçük Resim
    Öğe
    Evaluation of Noise Emission in A Textile Plant
    (Malatya Turgut Ozal University, 2020) Duran, Zekeriya; Genç, Mehmet; Doğan, Tuğba; Erden, Bülent
    Textile industry is characterized by the use of complicated machinery in mass production methods in order to meet increased consumption demands. This situation brings with it some issues for the employees. Many of the machines used in textile industry are operating at high noise levels. In this study, noise measurements taken from dyeing/finishing and weaving divisions in an integrated textile factory in Malatya city, Turkey were evaluated. Frequency distribution of dominant noise is also examined. Workers in weaving division were exposed to higher levels of noise than those in dyeing/finishing. Accordingly, the noise level in weaving ranged from 99.2 to 101.1 dBA, while that in dyeing/finishing ranged from 77.1 to 79.3 dBA. It is also outside the 4000 Hz frequency zone, where the dominant frequencies of the maximum noise levels exposed by those working in the measured divisions fall in the middle frequency range to which the ear is most sensitive. Considering the frequency distribution, noise levels in the 4000 Hz region are calculated to be between 84.2 and 86.8 dBA in the weaving division and 60.0 to 61.9 dBA in the dyeing/finishing division. A noise histogram showed that noise in the weaving division had spread over a wider range than the dyeing/finishing division.
  • Küçük Resim Yok
    Öğe
    Measurement and analysis of noise in natural stone processing plants
    (Baski, 2019) Duran, Zekeriya; Dogan, Tugba; Erdem, Bülent; Genç, M.
    Noise is a major environmental pollution component that is difficult to control and has the potential for damage in terms of occupational disease. In this study, noise measurements were taken in seven natural stone processing plants operating in Sivas and its surroundings, the results were evaluated, and the frequency-noise relations were revealed. Machines with the highest noise levels are head cutting/side cutting machines, bridge saw, block cutting machines, small surface grinding machines, marble ageing machines, gang saw and sizing/honing machines. The machines with the lowest noise levels are void filling machines, slabs waxing machines and chamfering machines. When the machines and the plant are taken into consideration the frequency ranges for the highest noise levels are mostly between 1250 Hz - 5000 Hz and concentrated around 3150 Hz. Thus, in general, the sounds in the plant environment can be defined as thin. Employees in other regions were exposed to a noise level of more than 80 dBA, which is the lowest exposure action value, except for the personnel working in the filling/reinforcement machines of natural stone processing plants. Although the processes in natural stone processing plants are similar, there are significant differences in noise levels of machines. The main reasons for this difference are the machine layout planning in the plants and the placement of machines with high noise levels along with low-noise machines in the same compartments. © 2020 Elsevier B.V., All rights reserved.