| Document ID (ISN) | 52748 |
| CIS number |
89-1916 |
| ISSN - Serial title |
0002-8894 - American Industrial Hygiene Association Journal |
| Year |
1989 |
| Convention or series no. |
|
| Author(s) |
Cecala A.B., Covelli A., Thimons E.D. |
| Title |
Reducing workers' dust exposure during bag stacking in enclosed vehicles |
| Bibliographic information |
Feb. 1989. Vol.50, No.2, p.99-104. Illus. |
| Abstract |
This research project was a two-step effort. The first step was a qualitative laboratory evaluation performed in a railcar to compare different types of ventilation systems (blowing, exhaust, and push-pull systems) using a methane (CH4) tracer gas technique. An exhaust system located over the snake conveyor was the most effective system at reducing gas levels in and around the bag stacker's work area. The second step then involved a field evaluation at a silica sand processing plant to determine the system's effectiveness in the actual work environment. Three different versions were evaluated in an attempt to optimise the exhaust ventilation system's effectiveness. The most effective version involved exhausting 54.5m3/min (2000ft3/min) through a fibreglass tube located 1.1m past the end of the slinger at a 2.0m height so as not to inferfere with the bag stacker's job function. A small exhaust tube drawing approximately 8.8m3/min (300ft3/min) at the snake conveyor/slinger transfer point captured the dust generated at this location. Dust reductions in and around the bag stacker ranged between 65% and 95% when loading both 22.7kg (50-lb) and 45.4kg (100-lb) bags of ground silica sand into railcars and trailer trucks with this system. |
| Descriptors (primary) |
wagons; loading and unloading; road transport; ventilation systems; rail transport; suppression of airborne dust |
| Descriptors (secondary) |
description of technique; limitation of exposure |
| Document type |
D - Periodical articles |
| Subject(s) |
Toxic and dangerous substances
|
| Broad subject area(s) |
Chemical safety
|
| Browse category(ies) |
Road transportation
Ventilation
Rail transportation
|
