Maximum Permissible Concentrations of Aerosols of Fibrogenic Action,
Abstract
The following are maximum permissable concentrations of dusts for industrial hygiene standards: Dusts, which possess sharply pronounced fibrogenic action, quantitatively comparable with the action of quartz - 1 mg/cu m; dusts, which are characterized by completely distinct fibrogenic action, but less than that of quartz - 2 mg/cu m; dusts, which lead to the development of pneumoconiosis over a substantially more prolonged average period - 4 mg/cu m; dusts possessing weak fibrogenic reaction, but expressed bronchogenic activity - 6 mg/cu m; Dusts, which cause an insignificant proliferative-cellular reaction with the development only of reticulin fibers and (or) of weak bronchogenic activity - 8-10 mg/cu m.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 27, 1974
- Accession Number
- ADA004386
Entities
People
- B. T. Velichkovskii
- V. B. Latushkina
Organizations
- National Air and Space Intelligence Center