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One of the accidents in the list is a fatal 2010 welding explosion at a DuPont production facility.
For a Chemical Safety Board video re-creation and analysis of the event -- and information about prior similar incidents --- see http://www.csb.gov/videoroom/detail.aspx?VID=65
The lessons learned for pre-job analysis of hazards are widely applicable, and could apply to any ignition source near a laboratory system containing flammable gases in interconnected vessels.
David Haugen, retired