Estudio de contaminación acústica de las industrias metálicas “Vilema”, para la propuesta de un plan de mitigación

Abstract

The objective of this study was to determine the level of noise pollution in the metal industry's "Vilema". This proposal reduces the noise levels emitted by the company's machinery by monitoring the sound and background pressure levels at critical points within the study area. It began by identifying the critical points divided into four work areas: machinery, perforation, locksmith painting and exterior winding, giving a total of thirteen points subject to evaluation. The monitoring was divided into two phases (morning-afternoon), with a periodicity of 9 days; a type 1 sound level meter with slow response A weighting was used. The monitoring values were the following: 80.13, 82.35, 76.64, 77.58, 77.70, 83.62, 77.25, 81.43, 82.65, 81.13, 82.54, 71.46 and 71.93 dB that was subsequently adjusted using the experimental statistical design based on logarithmic averages that, then be confronted with the base regulations, Ministerial Agreement No.097-A "Maximum noise emission levels and measurement methodology for fixed sources and mobile sources" showed that they are outside the maximum permissible limit, As for the average equivalent sound pressure of the entire industry, it was established at 82.49 dB, an excess value proposed by the regulations, accordingly, a mitigation plan was developed aimed at reducing the noise generated by this activity, contemplating the use of acoustic protection inputs for workers and maintenance of the machinery used. Finally, it is recommended to promote occupational safety campaigns focusing on the benefits of using hearing safety implements and minimising both the environmental impact and the worker's health.