Centro de Documentacion de Fundación MAPFRE - Aerosol penetration through respirator exhalation valves

MAP20071020351

Aerosol penetration through respirator exhalation valves / Peter Bellin, William C. Hinds

Sumario: Aerosol penetration into a mask can occur by three routes: filter penetration, facial seal leaks, and exhalation valve leakage. The first two mechanisms usually are the most important, although the latter can be significant in certain circumstances, such as when the valve is dirty or malfunctioning. This paper adressess the nature and extent of exhalation valve leakage, that is, back leakage of outside air through the exhalation valve as it closes and seals during inhalation

En: American Industrial Hygiene Association journal. - Akron, Ohio. - Vol. 51, nº 10, October 1990 ; p. 555-560

1. Higiene industrial . 2. Contaminantes químicos . 3. Sustancias tóxicas y peligrosas . 4. Aerosoles . 5. Inhalación . 6. Máscaras . 7. Equipos respiratorios . 8. Válvulas . I. Hinds, William C. . II. Title. III. Título: American Industrial Hygiene Association journal.