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- Livros E Revistas
- Manual Prático de Avaliação E Controle de Poeira E Outros Particulados
- Parte III. Instrumentos de Medição
Elutriador vertical para poeira de algodão
| Autor | uffi Messias Saliba |
| Ocupação do Autor | Engenheiro Mecânico. Engenheiro de Segurança do Trabalho. Advogado. |
| Páginas | 37-38 |
Page 37
O elutriador vertical é utilizado para avaliar a concentração de poeira de algodão. É constituído de uma bomba e de um orifício crítico, que regula o fluxo de 7,4 l/min na entrada do elutriador. Com essa vazão de aspiração são separadas as partículas menores de 15 µm, ou seja, somente as partículas deste tamanho irão impactar no filtro.
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Figura 11 - Elutriador vertical
Page 38
Em 2010, a ACGIH alterou o limite de tolerância para poeira de algodão e método de coleta. O limite foi reduzido para 0,1 mg/m3 para poeira torácica. Assim, a coleta deve ser realizada com a bomba gravimétrica ligada ao separador de fração de partículas...
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