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Safety Shooter In addition, OSHA has added provisions to the new rule that clarify existing requirements in the general industry standard. These include: 1. Requiring that employers who direct workers to enter a space without using a complete permit system prevent workers’ exposure to physical hazards through elimination of the hazard or isolation methods, such as lockout/ tag-out; and 2. Requiring that employers who are relying on local emergency services for emergency services arrange for responders to give the employer advance notice if they will be unable to respond for a period of time (because they are responding to another emergency, attending department-wide training, and so on). Exclusion Criteria Enclosed spaces that are not confined spaces for the purposes of the application of the new standard must satisfy specific exclusion criteria. To determine that a space is not a confined space, it must be identified as a space described in Column A and must meet all the criteria in Column B (refer to Table 1). The Exclusion Criteria table does a nice job of defining what constitutes permit-requiring confined spaces. It highlights the risks involved in working in confined spaces that should not be ignored. Mike Munyon is a Senior Project Manager for Superior Gunite for the East Side Access Project in New York City. He has been with Superior Gunite East Coast for 3 years. Frank E. Townsend III is the East Coast Region Manager for Superior Gunite. He is a civil engineer graduate of Worcester Polytechnic Institute, Worcester, MA, and received his master’s degree from the University of Missouri, Columbia, MO. Townsend is an active member of ACI Committee 506, Shotcreting, and serves on the ASA Board of Directors. He has been awarded the U.S. Army Corps of Engineers deFluery Medal and Engineering News-Record New York’s “Top 20 Under 40” design and construction leaders in 2016. Townsend is also an active member of the New Jersey Chapter – ACI; the Concrete Industry Board, an ACI New York City Chapter; The Beavers (a Heavy Engineering Construction Organization); American Society of Concrete Contractors; American Society of Civil Engineers (ASCE); AREMA; and Society American Military Engineers (SAME), remaining a lifelong soldier. Table 1: Confined Spaces Exclusion Criteria Column A Column B Spaces that may be excluded from Part 9, provided that all the criteria in Column B are met Exclusion criteria Swimming pools Crawl spaces under school portables or other non-industrial buildings Excavations Attic space Open, unconnected wet wells, or dry wells for storm or sewer hookups at new construction sites Elevator shafts 1. The design, construction, location, and intended use of these spaces will ensure these spaces are characterized by clean respirable air at all times. 2. The space must have an interior volume of not less than 64 ft3 (1.8 m3) per occupant. 3. The space must have openings to the atmosphere that are known to provide natural ventilation. 4. There must be no potential for a high or moderate hazard atmosphere, as defined in Section 9.1 of the Regulation, to exist or develop immediately prior to any worker entering the space or during any work within the space. 5. There must not be a need to mechanically ventilate, clean, purge, or inert the space prior to entry for any reason. 6. There must be no potential for a hazardous substance to migrate through any media (for example, air, soil, conveyance, piping, or structure) to infiltrate the space. 7. The space must be free of residual material (for example, waste, sludge, debris) that, if disturbed, could generate air contaminants that could immediately and acutely affect a worker’s health. 8. There must not be any risk of entrapment or engulfment to workers entering the space. 9. The space must not contain, have introduced, or be adjacent to tools, equipment, or involve processes that could generate air contaminants that could immediately and acutely affect a worker’s health. 62 Shotcrete • Summer 2016


2016SummerShotcreteEMag
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