Dust generating potential

Measurement and analysis of trash and dust in cotton is important in the prediction of dust generation potential, in relation to byssinosis (14) and rotor spinning performance (15). By definition, trash is the nonlint particles including dust which settle under the influence of gravity in the processing of cotton. Dust is the finer material capable of being dispersed in air. Particulate burden is the combined trash and dust level in cotton. 

Clay quarries are principally worked during the summer months, during the period of maximiun fugitive dust generation potential. The area requiring clearing and stripping of top soil should be minimized. 

DUST-GENERATING POTENTIAL OF ALTERNATIVE FORMS OF RUBBER CHEMICALS... 

It is important to note that EAF dust is a hazardous waste because of its high concentrations of lead and cadmium. With 550,000 tons of EAF dust generated annually in the U.S., there is great potential to reduce the volume of this hazardous waste. The motivation for reducing this waste not only lies with the cost of air pollution controls, but with the cost for disposal. U.S. 

In each of these plants, the characterization of the dust explosion potential was carried out by sampling transport ducts for explosive dust concentrations during an actual plant operation. The critical measurements taken were the quantification of explosive dust concentrations and level of electric energy generated from the electrostatic charge accumulations found in the duct. 

The Owens Lake dusts have been recognized as a potential human health hazard. Remediation elforts have recently been implemented to help mitigate dust generation from the dry lake beds. However, we are not aware of any systematic epidemiological or exposure studies that have been carried out to assess or document the health elfects on people living near Owens Lake. 

These results suggest that evaporative playa lake sediments and dusts generated from dry lake beds can be potentially significant sources of reactive, alkaline material with high levels of soluble, potentially toxic trace metals and metalloids. Further studies are needed to determine whether such dusts pose a substantial health hazard to those exposed to them on a regular basis. 

Individuals living near facilities which utilize plutonium in their operations may have higher exposure potential due to regular releases through stack-emissions or waste water. In addition, atmospheric fallout to the soil can result in secondary releases due to dust generation while farming or due to uptake by crops and subsequent ingestion of contaminated crops (Corey et al. 1982). 

Precaution Potential for dust explosion minimize dust generation Hazardous Decomp. Prods. Does not undergo spontaneous decomp. ... 

Electrical outlets shall be three-wire outlets with high-quality, low-resistance ground cormections. Circuits should be clearly identified to correlate with labels in breaker panels. If the nature of the hazard generates potentially explosive or ignitable aerosols, vapors, dusts, or... 

Typically applied where dust explosion potentials exist in enclosures from potential overpressures generated from dust or vapor. Spark detectors (i.e., infrared detectors) or pressure detectors are typically used that instantaneously initiate a suppression system to inhibit or extinguish the spark and prevent an explosion. See also Explosion Isolation. 

The preparation, mixing and dissolution of the media components can generate potentially allergenic dusts. This should be carried out with effective exhaust ventilation or contained equipment. 

One benefit of the emerging understanding of vulcanization fume is an appreciation of the potential for controlling the release of a vapour from rubber. This is control at source in the stricter sense as previously applied (Section 3.4) to the control of dust generation from solid additives. Examples of the implementation of this approach to control specific component emissions include the removal of Nonox or NDPA from rubber formulations and their replacement by safer alternatives. Such control at source has been described in general terms as achievable in two ways. ... 

Pneumatic conveying systems are particularly versatile. A very wide range of materials can be handled and they are totally enclosed by the system and pipeline. This means that potentially hazardous materials can be conveyed quite safely. There is minimal risk of dust generation and so these systems generally meet the requirements of any local Health and Safety legislation with little or no difficulty. 

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