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- Livros E Revistas
- Manual Prático de Avaliação E Controle de Poeira E Outros Particulados
- Apêndices
Apêndice II - Laudo técnico de avaliação de exposição à poeira
Autor | uffi Messias Saliba |
Ocupação do Autor | Engenheiro Mecânico. Engenheiro de Segurança do Trabalho. Advogado. |
Páginas | 113-114 |
Page 113
A avaliação da exposição à poeira mineral contendo sílica livre cristalizada (quartzo) foi realizada utilizando-se a bomba gravimétrica MSA de uso individual, separador de partículas respiráveis (ciclone) e filtros de PVC de 5,0 µm de porosidade. As bombas foram calibradas nas vazões adequadas, antes e depois de cada amostragem, e efetuada, em seguida, a média aritmética destas com a representatividade dos respectivos filtros utilizados.
As amostras coletadas foram enviadas ao laboratório de Engenharia da UFMG para análise química por meio do método de absorção atômica e difratometria de Raio X (certificados de análises anexos).
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A concentração média de poeira respirável foi inferior ao limite de tolerância, no Anexo 12, NR-15, da Portaria n. 3.214. Todavia, o nível de ação previsto no item 9.3.6.2 foi ultrapassado.
Medidas de Controle
· Umidificar os pontos de maior geração de poeira da referida instalação;
· Melhorar a umidificação das vias de circulação;
Page 114
· Instalar cabines isoladas e com ar-condicionado em todos os equipamentos móveis tais como: caminhões, pá carregadeira, trator de esteira, entre outros;
· Recomenda-se...
Para continuar a ler
PEÇA SUA AVALIAÇÃO- Manual prático de avaliação e controle de poeira e outros particulados
- Apêndices
- Apêndice I - Exemplo de avaliação estatística de particulados
- Apêndice II - Laudo técnico de avaliação de exposição à poeira
- Apêndice III - Quadro/Resumo dos métodos
- Apêndice IV - Normas Regulamentadoras (NR-9 e NR-15), Portaria n. 3.214, referentes à poeira
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