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Training Time: 23 minutes
Compatibility: Desktop, Tablet, Phone
Based on: OSHA CFR 29 Part 1910.1053
Languages: English, Spanish
Crystalline silica is a form of silicon dioxide which occurs naturally in the Earth's crust. When it is broken up by high energy activities into small airborne respirable particles, it can cause serious health hazards when inhaled. The symptoms caused by inhalation may not be immediately apparent. It is critical that individuals working around crystalline silica are knowledgeable of its physical properties, understand its safety risks, and know how to effectively avoid exposure. With the proper protective measures, training, and PPE, exposure to respirable crystalline silica can be reduced to the point that it is no longer a health threat to those who must work around it.
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The following key questions are answered in this module:
What are some industries where you are likely to be exposed to crystalline silica? Crystalline silica is generated in many industries; examples include mining, construction, agriculture and glass manufacturing.
Where does respirable crystalline silica come from? Crystalline silica is a common mineral. Anytime a high energy operation such as cutting, grinding, or crushing is performed on a silica-containing material, small particles of dangerous respirable dust are formed.
What kinds of diseases can exposure to crystalline silica lead to? Over a period of time, exposure to respirable crystalline silica can lead to a number of diseases. These include silicosis, pulmonary tuberculosis, lung cancer, autoimmune disorders and kidney disease.
How should exposure to crystalline silica be controlled? Engineering controls, administrative controls and personal protective equipment can all be used to prevent or reduce exposure to respirable silica.
What kind of respirator should be used to limit exposure to respirable silica? A variety of respirators are available and they are rated by their APF, or assigned protection factor. The proper type of respirator needed is determined by the measured concentration of crystalline silica in the air.
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