| ID (ISN) del documento | 34784 |
| Número CIS |
81-192 |
| ISSN - Título de la serie |
0003-4878 - Annals of Occupational Hygiene |
| Año |
1980 |
| Número de serie |
|
| Autor(es) |
Bancroft B., Greenough G.K., Hodges J.P., Whitelaw D.G. |
| Título |
Measurement of the dust protection and airflow of a helmet respirator. |
| Información bibliográfica |
1980, Vol.23, No.3, p.295-304. Illus. 7 ref. |
| Resumen |
Dust protection is measured by placing the helmet on a dummy head mounted in a test chamber and exposing it to an aerosol of fine NaCl particles. Air is drawn through an orifice in the dummy's mouth to simulate breathing. Sampling is done inside and outside the helmet. Two methods of measuring airflow are described. In one, a variable-flow pump is used to overcome the resistance of a flow meter; the pump output is adjusted until the air entering the respirator is at atmospheric pressure, and the helmet is then considered to be operating under normal conditions. The second method uses a perforated flow-plate which is drawn against the helmet air intake by the airflow. By adjusting the weight and airflow resistance of the plate, it can be made to remain in place at the desired minimum airflow rate. |
| Descriptores (primarios) |
cascos antipolvos; medida del flujo; aparatos respiratorios filtrantes |
| Descriptores (secundarios) |
descripción del procedimiento; pruebas del material |
| Tipo de documento |
D - Artículos periódicos |
| Tema(s) |
Protección individual
|
| Broad subject area(s) |
|
| Navegación por categoria(s) |
Respiratory protection
Head protection
|
