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Kingsport Autism Support Group

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Andrew Campbell
Andrew Campbell

Where To Buy Sandblasting Sand ((NEW))

When you are looking for sandblasting sand, there is a wide range of materials that can be used for abrasive blasting. In order to select the appropriate blasting media for you, it is important to understand your options and their uses in sandblasting. N.T. Ruddock offers many blasting materials. We have several blasting sand options from extra fine to coarse. Shipping is available for all your abrasive blasting media.

where to buy sandblasting sand

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Glass beads can be used on many materials from stainless steel to plastic and many other materials in between. Along with this flexibility, there are many benefits to using glass beads as blasting media in sandblasting. They are less abrasive than other materials, leave no embedded residue, and are environmentally safe, among other benefits. Glass beads work well on fabricated parts, castings, pipe fittings, structural steel, and decorative parts, among other things.

While Aluminum Oxide is a very pure sandblasting abrasive. For this reason, it is being used more frequently for high-performance microdermabrasion sandblasting equipment. Aluminum oxide can be recycled many times in use and is very cost-effective, making it widely used as a sandblasting media. It is also widely used because it is safer to use than sand and its consistent size makes its finish smoother. In addition, because it is harder than other materials, it is attractive for its ability to cut deeper into surfaces more effectively. This abrasive is effective for:

Whether you are looking for sodium bicarbonate or glass beads for blasting, N.T. Ruddock offers a wide range of blasting sand options to meet your blasting media needs. If you have questions about what media is best for your needs, contact us today and we can help ensure you have the materials best for your project.

Manufacturer & distributor of sandblasting sand including Staurolite sand. Steel shot & grit, aluminum oxide, cut wire, glass beads, ceramic shot & grit, plastic abrasives, coal slag, garnet, walnut shells, crushed glass & bicarbonate soda are also available. Services include metal finishing equipment repairing & rebuilding, general purpose cleaning, blasting, shot peening, deburring, mill scale removal, rust removal, burnishing, oil/grease removal, surface preparation, contract & fulfillment.

QUIKRETE Commercial Grade Sandblast Sand (No. 1961-1963) is a consistently graded, washed and kiln dried sand used for industrial and construction applications. Sand Express is a sub company of Quikrete. Bags may be the commercial retail Quikrete or the commercial white Sand Express bags. Material for both bags are exactly the same.

The National Institute for Occupational Safety and Health (NIOSH) requests assistance in preventing silicosis and deaths in workers exposed to respirable crystalline silica during sandblasting. Sandblasters, exposed coworkers, and their employers urgently need information about the respiratory hazards associated with sandblasting. Your assistance in this effort will help prevent silicosis and death, a national goal for health promotion and disease prevention stated in Healthy People 2000 [DHHS 1990].

The Alert describes 99 cases of silicosis from exposure to crystalline silica during sandblasting. Of the 99 workers reported, 14 have already died from the disease, and the remaining 85 may die eventually from silicosis or its complications. NIOSH requests that editors of trade journals, safety and health officials, labor unions, and employers bring the recommendations in this Alert to the attention of all workers who are at risk.

Abrasive blasting involves forcefully projecting a stream of abrasive particles onto a surface, usually with compressed air or steam. Because silica sand is commonly used in this process, workers who perform abrasive blasting are often known as sandblasters. Tasks performed by sandblasters include the following:

The silica sand used in abrasive blasting typically fractures into fine particles and becomes airborne (see Figure 1). Inhalation of such silica appears to produce a more severe lung reaction than silica that is not freshly fractured [Vallyathan et al. 1988]. This factor may contribute to the development of acute and accelerated forms of silicosis among sandblasters.

Estimates indicate that more than 1 million U.S. workers are at risk of developing silicosis and that more than 100,000 of these workers are employed as sandblasters [Shaman 1983]. Approximately 59,000 of the 1 million workers exposed to crystalline silica will eventually develop silicosis [Shaman 1983]. No published estimates indicate the number of sandblasters who will develop silicosis, but a 1936 study in Great Britain [Merewether 1936] reported that 5.4% of a population of sandblasters (24 of 441) died from silicosis or silicosis with tuberculosis in a 3.5-year period. The National Occupational Exposure Survey indicates that the construction industry employs the largest number of sandblasters, with the highest proportion in the special trades industries [NIOSH 1988b, c; 1990b].

Ventilation controls for reducing crystalline silica exposures are not used in most industries [NIOSH 1990b]. Samimi et al. [1974] found that even in short-term sandblasting operations (less than 2 hours of blasting during an 8-hour workday), the average concentration of crystalline silica was 764 micrograms per cubic meter (µg/m3), with an average silica content of 25.5%. This average dust concentration was twice the 1974 standard of the Occupational Safety and Health Administration (OSHA).

Because of the high risk for silicosis in sandblasters and the difficulty in controlling exposures, the use of crystalline silica for blast cleaning operations was prohibited in Great Britain in 1950 [Factories Act 1949] and in other European countries in 1966 [ILO 1972]. In 1974, NIOSH recommended that silica sand (or other substances containing more than 1% free silica) be prohibited as abrasive blasting material and that less hazardous materials be used in blasting operations [NIOSH 1974b].

The shop owner employed 17 workers and operated 3 shifts. All shifts had a designated sandblaster who was given a supplied-air respirator with a hood. Sandblasting was performed for about 6 hours on each shift. During the remainder of the shift, the sandblaster wore only a disposable particulate respirator and shoveled the used sand into a floor pit for recycling. Workers reported that coworkers had developed problems while working as sandblasters and that the employer typically hired six to seven new sandblasters each year to replace those who quit.

An area air sample collected inside the blasting room contained about 500 times the NIOSH REL for crystalline silica. An air sample collected immediately outside the blasting room contained 8 times the NIOSH REL, indicating poor containment of the dust by the blasting room (which was not sealed) and dangerous dust leakage from the sand-handling equipment.

Other problems were noted with regard to air-flow pressures at the helmet, improper ventilation, sporadic respirator use, and dust collection. The hopper outlet for the dust collector dumped fine dust directly onto the plant floor. This dust accumulated and exposed many workers as it was dispersed throughout the plant. A currently employed sandblaster stated that although the exposure was a nuisance, he considered the dust to be part of the job.

Following a later report by the physician in January 1989, the Ector County Health Department and the Texas Department of Health contacted local physicians and identified seven additional sandblasters who had suffered from silicosis since 1985. Of the 10 workers identified, 9 had worked at the same facility, which employed approximately 60 persons.

All 10 workers had used sandblasting machinery. Duration of exposure to sandblasting ranged from 18 months to 8 years (mean: 4.5 years). Nine workers reported no previous silica exposure; the remaining worker had sandblasted oil-field drilling equipment for 3 years before working at the originally identified facility for 5 years.

The sandblasting process at this facility required that a blasting rod using an equal mixture of flint and garnet (20.5% crystalline silica) be passed through the drilling pipe to remove contaminants and to prepare the interior surface for a new protective plastic coating. Although the sandblasting operation was enclosed by blasting cabinets connected to exhaust systems, the cabinets were in poor repair and permitted clouds of dust to be released throughout the work area. Protective booths intended to reduce exposures drew air from areas with substantial silica contamination. Workers manually shoveled the used sandblasting material into the machinery for reuse.

In November 1988, air samples from personal breathing zones documented respirable crystalline silica exposures of 400 to 700 µg/m3 for workers in the sandblasting area. These data were consistent with results reported by OSHA during a similar environmental inspection in which exposures substantially exceeded the current OSHA PEL (100 µg/m3 for respirable silica [29 CFR 1910.1000]. Supplied-air respirators had not been used during sandblasting, and workers reported wearing only disposable particulate respirators.

A 49-year-old nonsmoker who had worked as a sandblaster for 6 years came to a Louisiana hospital complaining of difficult breathing, a nonproductive cough, lack of appetite, fever, and a 20-lb weight loss [Owens et al. 1988].

Acute silicosis developed in four men (aged 23, 38, 38, and 47) employed as tombstone sandblasters at a single factory for an average of 3 years. Three of the four men are known to have died of the disease [Suratt et al. 1977]. None of them showed any evidence of tuberculosis.

Investigations revealed that the sandblasters worked in enclosed but vented blasting chambers. Although supplied-air respirators were available to the workers, investigators indicated that they wore only negative-pressure, half-mask respirators with disposable filters. Workers in the blasting room were being exposed outside the mask to 98% crystalline silica sand at a concentration of 15 million particles per cubic foot (5 times the 1974 OSHA standard). A later investigation indicated that workers were using the supplied-air respirators but that they were being exposed to crystalline silica at a concentration of 3,400 µg/m3 as a TWA (18 times the 1974 OSHA standard).**** 041b061a72


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