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Concrete Dec 2018

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9 COATINGSPRO CONCRETE COVERED DECEMBER 2018 Concrete Proof For concrete substrates, proper PPE could include protec- tive clothing, gloves, goggles, boots, hard hats, ear protec- tion, respiratory protection if spraying, ventilation if using solvent-based coatings, and fall protection when working at heights, such as on roofs. In addition to the tools, even the substrate itself can pose some risks. "Materials like concrete — as well as sand, stone, and mortar — contain crystalline silica, making this substrate unique, unlike steel or wood," said Mitch Kiser, product manager for industrial respiratory protection at Bullard. "When processes such as chipping, cutting, drilling, or grinding are used, they create environments that turn crystalline silica into respirable size particles. Proper PPE is recommended, as exposure to breathing silica dust can lead to silicosis." On concrete jobsites, most silica exposures commonly occur during abrasive blasting for surface preparation, Kiser explained. "Any type of mechanism that uses impact, pulverization, or erosion to create a surface texture needs to consider PPE," Kiser said. "is is even more likely when the substrate itself could be a source of respirable dust that could be inhaled. Dust masks are commonly seen in the concrete industry as the minimal standard PPE requirement. e recent OSHA [U.S. Occupational Safety and Health Administration] regulation regarding silica is the first step to compliance to protect workers in the field, and we believe it will help shift the market toward ensuring long-term health benefits for workers. Avenues and engineering solutions to create a dust-free environment are limited, as well as expensive, for proper containment and control. erefore, it is even more important for personnel and their compliance supervisors to take greater responsibility in protecting workers." Companies such as Bullard, 3M, TurtleSkin by Warwick Mills, Ty vek by DuPont, and Guardian Fall Protection are among the many viable PPE suppli- ers. Bullard 's GenV X and 88V X blast helmet respirators are used in abrasive blasting operations, while the GR50 is the company's most popular grinding and cutting respirator. e grinding hood can be used with a supplied air system or with a powered-air-purify- ing respirator. Meanwhile, Turtleskin's CoolGear Suit (for hot weather) and CoverA ll Suits (for colder and wetter applica- tions) are viable PPE options for use in waterjetting options at pressures of up to 40,000 psi (275.8 MPa). "Waterjetting is a method used very often in the concrete industry," said TurtleSkin's Cummings. "Waterjetting is used to remove coatings off of concrete surfaces. Water jets at even higher pressures can be used to cut concrete and even used to break apart concrete for hydro-demolition jobs." Generally speaking, PPE providers appear to be paying particular attention to the surface preparation phases of concrete projects, be it on the ground or in the air. "With safety, there's a lot more being driven around the preparation phase than the application phase," said Casey Ball, flooring market segment director at coatings manufac- turer Sherwin-Williams. "ere's such a push from OSHA with airborne silica that we've seen a real push toward HEPA [high-efficiency particulate air] filters." "Other than that, I think typical PPE for most concrete jobs includes steel-toed shoes and probably a respirator if [the coating] is going to be sprayed," Ball added. "Another big piece for me is gloves to keep it off your hands. You might drop a roller frame or something, and it's going to land in the coating, so you need to make sure you're keeping your hands protected. Eye protection is another big one just in case it splashes." In 2018, one brand-new safety protocol to consider is the ANSI/ISEA 121-2018 standard released from the American National Standards Institute (ANSI) and the International Safety Equipment Association (ISEA). is standard consists of design, testing, performance, and labeling requirements for tool tethering systems as well as containers used to trans- port and secure tools and equipment at heights. "ANSI does not have any enforcement power, but they do write suggested regulations for a lot of safety-related items," said Nate Pellerin, group product manager for the metal- working and dust business at DEWALT. "ey' ll write how it should be done, and then companies will start to look for their logos or approvals on products. In this case, ANSI paired up with ISEA and wrote out a new standard for anybody working at height using lanyards or some sort of tethering apparatus to hold their tools." "OSHA may eventually cover this in a ruling, but we don't have concrete evidence of that yet," Pellerin said OSHA has shown that there are more than 50,000 'struck by falling object' recordable incidents in the United States each year, and I imagine they' ll continue to seek out ways for better tool protection." DEWALT, which offers products relevant to coatings contractors, such as surface grinders, rotary and demoli- tion hammers, and cutoff saws, is addressing the tethering concerns with the introduction of a "LANYARD READY " program for many of its cordless tools. "One day it can be 90 °F [32.2 °C] on a jobsite, and later in the project it might be 15 °F [-9.4 °C]," Pellerin said. "Contractors have to plan for all those environments." Industry organizations, such as the American Concrete Institute (ACI), International Concrete Repair Institute Additional safety gear may need to be considered for jobsite conditions, such as weather. TurtleSkin by Warwick Mills offers suits for hot, cold, or wet applications.

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