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Iowa | As a firefighter I took a class on this subject and here was the central case study: NFPA 51B states that cutting or welding shall not be permitted in the presence of explosive atmospheres (e.g., mixtures of flammable gases, vapors, liquids, or dusts with air) or explosive atmospheres that can develop inside uncleaned or improperly prepared drums, tanks, or other containers and equipment that have previously contained such materials or that can develop in areas with an accumulation of combustible dusts. The fatalities to the Fire Service personnel were incurred when the civilian salvage workers did not follow the NFPA guidelines.
Edited by mulberrygrovefamfarm 5/20/2009 11:49
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 explosion.jpg (24KB - 58 downloads)
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Update (Welding a diesel tank)
