Exposición laboral al ruido de los trabajadores de una mina a tajo abierto debido a la expansión, ubicación y tipo de actividad de los operadores, en la región norte del país

Abstract

La exposición laboral al ruido de los trabajadores de una mina a tajo abierto en la región norte del país, es evaluada en tres factores que anteriormente no se consideraban como relevantes; la expansión de sus operaciones, la ubicación del puesto de trabajo y el tipo de actividad que realizan los operadores; el desconocimiento de su influencia podría subestimar la evaluación del riesgo a ruido de los trabajadores y por consiguiente la efectividad del programa de protección auditiva. Se realiza un análisis distribucional de los resultados de 1540 mediciones de ruido de tipo dosimetrías-personales de turno completo, para un total de36Grupos de Exposición Similar GES, entre los años 2009 al 2013 y en tres períodos de tiempo; antes, durante y después de la expansión de la mina, tomando en consideración la ubicación del puesto en las áreas de mina, concentradora y mantenimiento, además de tomar en consideración el tipo de actividad que realizan los operadores (manual o automatizado), conduciendo a mostrar las diferencias entre los resultados de las dosimetrías de ruido. Además se analiza la influencia del entorno de trabajo, sin techo o bajo techo, en las mediciones de ruido.

Occupational noise exposure of workers in an open pit mine in the northern region of the country pitis evaluated on three factors not previously considered as relevant; the expansion of its operations, the location of the job and the type of activity performed by operators; ignorance of their influence may underestimate the risk assessment of noise at work and therefore the effectiveness of hearing conservation program.

A distributional analysis of the results of 1540 measurements of noise dosimetry full shift, for a total 36 Similar Exposure Groups (SEGs) between 2009 and 2013 and three time periods is performed; before, during and after the expansion of the mine, taking into consideration the location of the position in the areas of mine, concentrator and maintenance, besides taking into consideration the type of activity performed by operators (manual or automated), leading to show the differences between the results of the noise dosimetry. Besides the influence of the work environment, homeless or indoors, discussed in noise measurements.

Palabras claves: hypoacusis, noise, PAIR, noise exposure, mining operators, expansion of mining operations, mining operator permanence location, roofing environments, permissible standards, conditional probabilities of crosstabs. Similar exposure group (GES).

Occupational noise exposure of workers in an open pit mine in the northern region of the country pitis evaluated on three factors not previously considered as relevant; the expansion of its operations, the location of the job and the type of activity performed by operators; ignorance of their influence may underestimate the risk assessment of noise at work and therefore the effectiveness of hearing conservation program. A distributional analysis of the results of 1540 measurements of noise dosimetry full shift, for a total 36 Similar Exposure Groups (SEGs) between 2009 and 2013 and three time periods is performed; before, during and after the expansion of the mine, taking into consideration the location of the position in the areas of mine, concentrator and maintenance, besides taking into consideration the type of activity performed by operators (manual or automated), leading to show the differences between the results of the noise dosimetry. Besides the influence of the work environment, homeless or indoors, discussed in noise measurements. Palabras claves: hypoacusis, noise, PAIR, noise exposure, mining operators, expansion of mining operations, mining operator permanence location, roofing environments, permissible standards, conditional probabilities of crosstabs. Similar exposure group (GES).