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With over 5 million respirator users in approximately 1.3 million United States workplaces, Respiratory Protection is a perennial “Top 5” most cited OSHA violation. 2013 saw 3,995 violations, taking fourth place and increasing 64% from 2012 (also the fourth-most cited standard) (1). The number one reason for citation – lack of a written program. 29CFR1910.134 is the OSHA standard that covers Respiratory Protection (2). A written program is required in any workplace where respirators are necessary to protect the health of the employee or whenever respirators are required by the employer.
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The Minnesota Department of Transportation (MnDOT) with KTA-Tator, Inc. (KTA) conducted a one-day seminar on Bridge Maintenance Painting Strategy & Project Design in May 2013. One outcome of that seminar was the realization that MnDOT needed a more uniform method to rate the condition of coatings statewide during the biennial bridge safety inspections and a process to select and prioritize maintenance painting strategies. MnDOT assembled a Technical Advisory Panel to address these needs and launched a multi-objective study from October 2013 through June 2014.
This paper compares and contrasts the accelerated laboratory autoclave (NACE TM0185) performance at 300°F (149°C), and 250 psig, of eight polycyclamine cured epoxy linings. The latter were tested for tank, vessel and pipe spool applications in the oil and gas industry. Five of the linings were commercially available and three were experimental. A modified amine cured epoxy was also evaluated in the study, a lining used to transport shale oil in railcars at temperatures up to 200°F (93°C).
Coal tar enamel provides an extremely long service life, under the right conditions. The Bureau of Reclamation (Reclamation) has observed more than 80 years of corrosion protection at facilities such as Hoover Dam. The coal tar enamel linings in penstocks and outlet works that are buried, encased, or in tunnels maintain excellent condition with minor damage. However, when temperature fluctuates between hot and cold, the enamel is stressed and develops alligator cracking.
Before coating concrete, you must first know what the substrate is that you are working on. Since all concrete floors are not the same there is no one, size fits all system. In fact, many buildings will have several different types of concrete floors. Add to that the different mix designs, placement techniques and environmental conditions and you end up with a menagerie of concrete floors exhibiting a wide variety of properties.
Xylene and Toluene are used in the formulation of plastics, coatings, composites, and paints. However, Toluene is designated as a Hazardous Air Pollutant (HAP), and Xylene is designated as both a HAP and an emitter of Volatile Organic Compounds (VOC). HAPs and VOCs are hazardous to human health and the environment and regulators are increasingly restricting their emission.
Composite coatings are a class of materials that are described as fiber-reinforced polymers (FRP) that consist of extremely strong tensile fibers saturated in a binding resin. From the original development as tank bottom lining materials designed to handle surface movement and corrosion, the applications for composite coatings have broadened and moved into the mainstream, with industry-accepted design codes written around their uses and applications.
Construction drying and climate control for major projects including Mission Critical Campuses (Data Centers), Healthcare/Institutional Facilities, and Major Construction/Retrofit Opportunities have become a necessity and not a luxury. Quick turnaround and timely completion have proven to be huge economic factors to facility owners, general contractors, and specialized subcontractors alike. Mission Critical Campus and Healthcare/Institutional Facility Construction specifically are on the rise, which is creating additional challenges for the construction teams.