Avaliação dos níveis de ruído e aplicação do método RULA no posto de trabalho do operador de retroescavadeira

Abstract

This paperwork aims to evaluate ergonomically - using the RULA (Rapid Upper Limb Assessment) method, through Ergolândia v.4.0 software - and assess the noise levels that are exposed the backhoe's operators in a company that operates in the field of sanitation in Curitiba, state of Paraná. Identifies the different noise levels in accordance with the backhoe's model and manufacture year. Discusses if the equivalent noise levels recorded are within the tolerance limit of NR-15 for a workday of eight hours. Analyzes the influence of the noise levels measured during the displacement over the equivalent noise level for eight hours of exposure. To perform the evaluation of noise, dosimeter measurements were performed at three different sets of backhoes and operators. This study examines whether a connection exists between the equivalent noise levels and the different activities carried out in this line of work. In the ergonomic analysis, the observational study identifies four main positions practiced by operators, each of which is separately analyzed in this study, applying the RULA method. With the resulting for each position the study presents the level of action to take. After the workday is applied a research using the diagram of painful areas, intending to correlate the positions performed by operators with the painful effects on the body. Obtained as a result two equivalent noise levels above the action level, but according to NR-15 all are below the tolerance level. For the positions was identified that three of them require changes, and one of them immediately.