Reduction of noise levels at the source through the reuse of disposed material
DOI:
https://doi.org/10.6008/CBPC2179-6858.2021.008.0030Keywords:
Environmental control, Control measures, Noise, Reuse of materials, Acoustic comfortAbstract
The purpose of this study is to prove the effectiveness in reducing noise generated by equipment in an industrial environment by reusing discarded material in order to provide greater acoustic comfort for the worker. For this purpose, point measurements of the noise emitted by the quartet were made during the process of separating iron ore samples before and after the installation of synthetic rubbers discarded on the contact surface of the equipment in order to soften the noise caused by the impact of the sample. The averages of point measurements of noise levels prior to the implementation of the environmental control measure was 89.19 dB (A) and after that it was 81.04 dB (A), resulting in an 8.15 dB (A) reduction. This reduction in the noise level was statistically proven by the inferential method, composed of the parametric test called “t” test of means, which showed a significant result pointing to the efficiency of the collective control measure for noise reduction. Therefore, it is concluded that the use of discarded material as a way to reduce noise at the source is effective, contributing to the worker's hearing health and sustainable, providing greater acoustic comfort for the worker and lower cost for the employer with employee absenteeism.
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