EVALUATION OF THE WORK CONDITIONS OF ACTIVITIES OF URBAN TREE PRUNING

Abstract

This work analyzed the work environment in the trees pruning activities in the urban arborization, comparison with the values of the legislation and the practical application of results to provide a better comfort, security, health, welfare to workers, and also a better efficiency and quality of the work. The weather conditions, the noise levels, the light conditions and vibration were analyzed using suitable ergonomic methods. The weather conditions in the work environment were according the permissible values in the legislation (NR15) for index of humid bulb and globe thermometer (IBUTG) of 25°C for the activities of pruning, with exception of the schedule to twelve hours (26,2°C), the hours of working should be of 30 minutes of work and 30 minutes of rest. The noise levels found in the activities of cut were 105,7 dB (A) and bucking were 103.9 dB (A), above the level permited by legislation (NR15). The minimum light conditions values were acceptable for legislation (NBR 5413/92), but the global indices were too high being able to cause problems to the worker health. The vibration conditions were acceptable.