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For all practical purposes, therefore, the requirements of the HCS to provide an appropriate warning label, apply to products containing greater than 0.1 percent crystalline silica or total quartz by weight or volume, as determined by analysis of a bulk sample of the original product.
Cutting stone, as pictured, generates dangerous crystalline silica dust that can become trapped in lung tissue and cause silicosis. This Hazard Alert focuses on countertop industry worker exposures to airborne silica dust, including from quartz in stone.
Examples include wet methods and dust collection vacuum attachments. The intent was to provide practical solutions to reduce exposures to respirable crystalline silica (RCS). OSHA has also created detailed fact sheets for Table 1 operations that may be helpful to your operations.
The classification decision relies upon the following main arguments: Health effects are limited to the fine fraction of crystalline silica. Regulation (EC) No 1272/2008 on Classification, Labelling and Packaging of substances and mixtures. The term ‘crystalline silica’ covers quartz, cristobalite and tridymite.
OEHHA listed crystalline silica (of airborne particles of respirable size) on the Prop. 65 list on October 1, 1988. The listing includes an exemption (Safe Use Determination) for crystalline silica in interior lat latex paint.
1 Απρ 2016 · According to OSHA, the evidence in the record for this rulemaking indicates that workers exposed to respirable crystalline silica are at increased risk of developing silicosis and other nonmalignant respiratory diseases, lung cancer, and kidney disease. Dates (29 CFR 1926.1153 (k)) Effective date: June 23, 2016.
The fine dust is called respirable crystalline silica (RCS) and is too fine to see with normal lighting. The leaflet explains how RCS can damage health and what to do to prevent harm. Related...
