Avaliação do nível de pressão sonora emitido pelo túnel de vento aa- tvsh1 em um ambiente parcialmente fechado

Abstract

The concern with the health of employees in the work environment evolved during the 18th century and over the centuries it was improved through laws and regulatory standards. This study aims to evaluate the sound pressure level emitted by the open circuit AA-TVSH1 wind tunnel, installed in a laboratory located at Universidade Federal Da Grande Dourados. The experiments were carried out with the aid of a decibel meter, which allowed obtaining measurements of the equipment noise in different positions and rotations. The study was based on the NBR ABNT 10152: 2007 standard, as well as on the Regulatory Standard nº. 15 (NR15) taking into account the limits imposed for exposure to noise in indoor environments. With the results obtained, it was possible to understand which positions in the laboratory the noise emission was more intense, as well as, what the limit time of exposure to noise an individual could remain in the environment as established by annex 1 of NR -15. Finally, it was possible to propose a solution to attenuate noise exposure in the position where the equipment operator remains exposed for a longer time.