Exposure of workers to noise and vibration in motor-manual timber harvesting activities

• Autor(a) principal: Masioli, William
• Data de Publicação: 2020
• Outros Autores: Fiedler, Nilton César, Lopes, Eduardo da Silva, Oliveira, Felipe Martins de
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Pesquisa Florestal Brasileira (Online)
• Texto Completo: https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1703
• topic: Ergonomia; Fatores ambientais; Máquinas florestais

The aim of this work was to analyze the level of workers exposure to noise and vibration of semi-mechanized logging operations. The research was carried out in harvesting operations in the southern region of Espírito Santo State, Brazil. Data were collected in a Pinus elliottii stand with 40 years old. Noise and vibration were analyzed in different logging activities and timber extraction. The noise exposure levels were measured using a dosimeter and the vibration with an accelerometer, according to NHO-01 and ISO 5349-1 standards. Logging and timber extraction exceeded the level of noise exposure limit, presenting 100.8 dB (A) and 91.3 dB (A), respectively. The vibration analysis showed fatigue levels in both axes, highlighting the delimitation with greater exposure (0.265 m s-2). Fatigue levels were observed in the axes XY of the upper limbs of the workers during logs transportation, with emphasis to load and unload activities (0.174 m s-²). We observed the necessity to adopt measures to reduce worker’s exposition to unhealthy conditions, as they are essential to the performance of those activities.