System for Protection against Exposure to Asbestos in a Factory for De-Insulation of Railway Cars.
Sperduto-B; Graziano-E; Castellino-N
NIOSH 1990 Nov:1071-1076
A test was conducted of a simple and easy to use personal protective system in a railway car deinsulation facility. The system consisted of waterproof overalls attached to a sack like helmet which in turn was fed by a pump equipped with an absolute filter. The overalls were made of a light weight polyester fabric lined with a water vapor permeable PTFE film, and had a double zipper which closed in the front to assure that they were waterproof. There was a long semistiff collar over which the neckline of the helmet was tightened. When exiting the work area the workers passed through a multiphase decontamination system which included a water filled tank, approximately 20 centimeters in height used for the first washing of the rubber boots; a first stall where a strong blast of air removed the larger fibers; a second stall where a water shower thoroughly cleaned the overalls and helmet, removing even the smallest fibers; a third stall where a stream of air dried the overalls and helmet; and passed through a second water filled tank for an additional boot washing and two air locks. This allowed the workers to have access to an area where they could remove their overalls, helmet and boots and then move on to the rest area dressed in the cotton clothing that they wear under the overalls. The first tests indicated that the use of this system allowed the creation of a rest area where some 50 people pass through, to one having an asbestos concentration of 1 to 5 fibers/liter of air.
Asbestos-workers; Mineral-dusts; Asbestos-fibers; Asbestos-industry; Air-quality-monitoring; Workplace-studies; Control-technology; Personal-protective-equipment; Protective-clothing;
DHHS (NIOSH) Publication No. 90-108
Control Technology and Personal Protective Equipment; Research Tools and Approaches; Control-technology;
Proceedings of the VIIth International Pneumoconioses Conference