CDC - Silica, Engineering Controls for Silica in ...
Jul 09, 2018 · Construction workers who perform concrete grinding may breathe dust that contains respirable crystalline silica (RCS). A NIOSH Cdc-pdf [1] study found that workers grinding concrete to smooth poured concrete surfaces were exposed to high levels of dust containing RCS, ranging from 35 to 55 times the NIOSH recommended exposure limit (REL).
OSHA’s Respirable Crystalline Silica Standard for Construction
Crystalline silica is a common mineral that is found in construction materials such as sand, stone, concrete, brick, and mortar. When workers cut, grind, drill, or crush materials that contain crystalline silica, very small dust particles are created.
Work Safely with Silica
Workers may be exposed to dangerous levels of silica dust when cutting, drilling, grinding, or otherwise disturbing materials that contain silica. These materials and tasks are common on construction and oil and gas jobs. Breathing that dust can lead to serious, often fatal illnesses.
Handheld Grinders for Tasks Other Than Mortar Removal
CONTROL OF SILICA DUST IN CONSTRUCTION Handheld Grinders for Tasks Other Than Mortar Removal The use of a handheld grinder to smooth or cut the surfaces of concrete, masonry or other silica containing materials can generate respirable crystalline silica dust. When inhaled, the small particles of silica can irreversibly damage the lungs. This
Construction Silica Exposure and Solutions-web
Construction workers could be exposed to silica when cutting, grinding, drilling, sanding, mixing or demolishing materials containing silica. The size of the airborne silica particles determines the amount of …
Hazards of Silica in Construction eTool
The percentage of silica present varies a lot. The higher the content, the more likely overexposure will occur; 4. Types of Equipment Used. Cutting using wet methods versus dry methods; Types of blades or abrasives used; Use of local ventilation that prevents or reduces the amount of dust you breathe; 5. How Long the Dust-Generating Activity Goes on in a Shift
What contractors need to know about OSHAs new silica rule ...
Aug 22, 2017 · What that means is contractors who engage in activities that create silica dust — that is, respirable crystalline silica — such as by cutting, grinding or blasting materials like concrete ...
Dry Cutting and Grinding is Risky Business
Silica exposure associated with dry cutting and grinding of masonry materials Keywords silica, silicosis, dry cutting, dry grinding, masonry, construction workers, granite countertop, concrete cutting, stone cutting, tile work, sawing, chipping, tuck pointing, concrete milling, stone polishing, scarifying, stone crushing, needle gunning
Silica - WorkSafeBC
Silica is one of the most common hazards on a worksite, particularly in the construction, oil and gas, manufacturing, and agriculture industries. Silica dust can cause silicosis, a serious and irreversible lung disease. It can also cause lung cancer. Cutting, breaking, crushing, drilling, grinding, or blasting concrete or stone releases the dust.
March Construction 2017
Silica is a primary component of many common construction materials, and silica-containing dust can be generated during many construction activities, including: Abrasive blasting (e.g., of concrete structures) Jackhammering, chipping, or drilling rock or concrete Cutting stone or tiles Sawing or grinding concrete Tuck point grinding
OSHA, Silica and the Construction Industry
Jun 14, 2017 · Crystalline silica is found widely in construction materials such as concrete, cement, mortar, stone and stone. When these materials are cut, drilled or ground, they produce dust that may contain small, respirable particles of crystalline silica, which has been linked to serious respiratory diseases like silicosis and COPD.
Dust containing crystalline silica in construction work ...
Exposure to crystalline silica can occur during common construction and demolition tasks when working with concrete, bricks, mortar, tiles, stone or other masonry. If employees regularly dry cut, grind, crush, drill, sweep or demolish these materials without engineering controls in place, it is likely that the exposure standard will be exceeded.
CDC - Silica, Engineering Controls for Silica in ...
Jul 12, 2018 · Cut-off saws (also known as hand-held abrasive cutters, chop saws, and quickie saws) are used extensively throughout the construction industry. They are frequently used without dust controls to cut brick, concrete slabs, block and pavers which typically contain crystalline silica.
Silica Protection Plan - The Hillis Group, LLC
a. Silica is a primary component of many common construction materials, and silica-containing dust can be generated during many construction activities, including i. Abrasive blasting (e.g., of concrete structures) ii. Jackhammering, chipping, or drilling rock or concrete iii. Cutting stone or tiles iv. Sawing or grinding concrete v.
Toxic and Hazardous Substances Reference Materials ...
Sep 02, 2015 · Silica, the second most common mineral on earth, is the basic component in sand, quartz, and granite rock. It comes in different forms, but crystalline silica—commonly found in stone (such as granite countertops), sand, concrete, and similar materials—is the type that damages the lungs.
Toxic and Hazardous Substances Reference Materials ...
Feb 19, 2014 · Basics of silica hazards. Silicosis is the name given to lung damage that occurs when you inhale dusts that contain crystalline silica. There are different forms of silica, but crystalline silica—commonly found in stone (such as granite countertops), sand, concrete, and similar materials—is the type that causes scarring in the lungs.
2017 OSHA Silica Dust Exposure & Control Regulations ...
Originally scheduled for June 23, 2017, OSHA has revised the compliance deadline to September 23, 2017. The new ruling will reduce worker exposure to no more than 50 micrograms of silica dust over an eight hour shift will go into effect in the construction industry.
Q&A: OSHA Regulations On Concrete Silica Dust
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). With those new OSHA regulations coming up, it’s important to be up to date on all the new changes regarding the OSHA standards.
Controlling Silica Dust – Learning from Each Other ...
Controlling Silica Dust – Learning from Each Other Videos. Tuckpointing Shroud (approximately 1 minute); Tools of the Trade --Demonstration of the Dust Director Shroud attached to a Metabo grinder "that allows masons to remove mortar without creating choking clouds of dust.". Silica Control in Construction.wmv (approximately 4 minutes); Georgia Tech’s Safety and Health Consultation …