Identificação das condições ambientais de segurança e proposta de melhoria em trabalho de extração e beneficiamento de calcário em Caçapava do Sul

Abstract

The limestone extraction process in a company located in Caçapava do Sul has been reported and analyzed as well as the implications brought to its workers’ health. The methodology is based on a research of the environmental conditions existing in the workplace area, also on the evaluation and measuring of risk factors. The levels of particulated material and of noise have been measured. In the area of limestone crushing, the medium percentage of free crystalline silica found in the particulated material was 0,46%, which resulted in the tolerance limit specified according to the NR-15 of 3,25 mg/m3. In the sector of lime crushing, mortar and rock perforation, it was not identified the presence of silica, even though the dust concentration was high. The level of continuous or intermittent noise varied between 70 Db (A) and 107,5 Db (A), measured in the curve Db(A)-slow. With those parameters, it was recommended some correction measures, which after applied should require a new measurement testing to verify if those correction measures were efficient.