The average cumulative dust exposure was 7.0 mg/m(3) year and cumulative silica exposure was 0.6 mg/m(3) year. Q&A: OSHA Regulations On Concrete Silica Dust. If there is a bare concrete floor in your home or basement, your family’s health is at risk from silica exposure. Recognizing that very small, respirable silica particles are hazardous, OSHA regulation 29 CFR 1926.55(a) requires construction employers to keep worker exposures at or below a Permissible Exposure Level (PEL) of 50 µg/m 3. It only takes a very small amount of the very fine respirable silica dust to create a health hazard. The U.S Department of Labor will start enforcing its new concrete silica dust ruling for construction on September 23, 2017 (moved from June 23, 2017). Wear an N-95 respirator at a minimum, to decrease the inhalation of cement dust; Eat and drink only in dust-free areas to avoid ingesting cement dust; What about wet concrete? First, let's consider what is waste. Even if little visible concrete dust is present in the air, the silica levels may exceed the OSHA permissible exposure limit. I get the question on is concrete hazardous waste a lot, and while the answer seems pretty clear to me, for some reason, it keeps coming up.Let's take the question of is concrete a hazardous waste, or the hazardous nature of concrete, one step at a time. The main component of concrete is cement which is widely used at constructing residential, commercial and industrial buildings. Seal Your Concrete against Concrete Dust! • Eat and drink only in dust-free areas to avoid ingesting cement dust. Contractors can minimize concrete dust hazards, silica sand hazards and other issues in the home by doing as much work as possible under controlled shop conditions and bringing completed pieces to the site. Workers also need to be trained about the hazards of silica and the proper use of respirators, although respirators should not be the primary control action. • Wear a P-, N- or R-95 respirator to minimize inhalation of cement dust. Concrete Burns • Sand contained in fresh concrete is abrasive to bare skin • Portland is an alkaline. Wet Concrete Hazard: Exposure to wet concrete … The average silica content of the dust was 9%. • Drying Portland is hygroscopic – it … Yes. • Use soap and water to wash off dust to avoid skin damage. So cement is commercially manufatured at large scale to fulfill the demand of construction industry. contact with cement dust and consult a physician. The Hazard Communication Standard (HCS) 29 CFR 1910.1200, revised in 2012, requires that the chemical manufacturer, distributor, or importer provide Safety Data Sheets (SDSs) (formerly MSDSs or Material Safety Data Sheets) for each hazardous chemical to downstream users to communicate information on these hazards. With those new OSHA regulations coming up, it’s important to be up to date on all the new changes regarding the OSHA standards. Concrete dust & odor hazard source tracking & remedy: this article describes odor & dust complaints traced to concrete: new pours, sawing or cutting concrete, substances spilled onto and absorbed into concrete, and other concrete or masonry-related odor and dust hazards. Every time a person walks on the floor or a child drags a toy truck, it grinds away millions of tiny particles of the concrete surface. Just because the risk of silica exposure is minimized when working with wet concrete does not mean that wet concrete is ‘hazard … Strong bases (ph of 12-13) are just as hazardous as strong acids to the skin but have no initial signs of pain such as a burning sensation. Significant associations between exposure to concrete dust and a small lung function (FEV(1)/FVC ratio, MMEF) loss were found, independent of smoking habits and of a history of allergy.