Apêndice IV - Modelo de laudo de avaliação de ruído para conforto
Autor | Tuffi Messias Saliba |
Ocupação do Autor | Engenheiro Mecânico |
Páginas | 136-137 |
Page 136
A NR-17 da Portaria n. 3.214/78, estabelece que, nos locais de trabalho onde são executadas atividades que exijam solicitação intelectual e atenção constantes, tais como: sala de controle, laboratórios, escritórios, salas de desenvolvimento ou análises de projetos, dentre outros, o nível de ruído aceitável para efeito de conforto é igual a 65,0 dB(A), e a curva de avaliação de ruído NC, não superior a 60,0 dB.
Na avaliação de nível de ruído nos escritórios foram utilizados os seguintes equipamentos:
• Medidor de nível de pressão sonora com analisador de frequência de terça e banda de oitava, de acordo com as especificações da Norma IEC
60.651 para o tipo 1.
• Calibrador acústico
A medição foi realizada no ambiente com o instrumento montado em um tripé a altura de 1,2 m do piso e a uma distância de no mínimo 1,0 m de qualquer superfície, como paredes, tetos, pisos e móveis (NBR 10.151).
Page 137
Verifica-se que, nas frequências de 500 Hz, 1 kHz e 8 kHz, os valores obtidos apresentaram não conformidade com o limite de conforto da curva NC 60,0 dB. Além disso, o nível de ruído global foi superior a 65,0 dB(A). Portanto, as condições de...
Para continuar a ler
PEÇA SUA AVALIAÇÃO- Manual prático de avaliação e controle do ruído - PPRA - 2018
- Apêndices
- Apêndice I - Modelo de laudo de avaliação da exposição ocupacional ao ruído
- Apêndice II - Modelo de laudo de avaliação de ruído para caracterização de insalubridade
- Apêndice III - Modelo de laudo de avaliação de ruído para concessão de aposentadoria especial
- Apêndice IV - Modelo de laudo de avaliação de ruído para conforto
- Apêndice V - Modelo de laudo de avaliação de ruído para perturbação do sossego público
- Apêndice VI - Normas e legislação complementares / Resolução CONAMA
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