Dosimetria de ruído: comparação dos resultados gerados a partir de diferentes períodos de medição

Abstract

The principal purpose of this study was to analise the needs of the use of the full workflow to do assessments of occupational noise exposure. This study was done based in 6 dosimetry performed on a industry located in Curitiba City. Half of the assessments were done by the period of 2 hours and the other half were performed using a 6 hours period. Based on the obtained results, the daily exposures doses were calculated using the normalizer average level, or, in toher words, the average level projected for the 8 hours period. For the analised case, the study concludes that the dosimety must be done using a full workflow period for the assessments even considering the fact that the studied functions had standar characteristics all day long when the sibjject is ocupacional noise. Its believed that the diference between the results was caused by adverse events or the use of two diferents equipaments. There were not used statics metodogys to analise the obtained results. It recommended that further assessments are made using only one equipament and that the obtained results be analised using a statistic methodology, remembering that the decibel is a logarithmic scale representing two units relationship.