Two maintenance men at an electric power generation plant
removed a check valve cover from a steam system. The section of the steam line
was isolated and tagged, but it could not be vented or drained first. The
section was only partially depressurized when the cover was loosened. When the
employees removed all fasteners holding the cover in place, it blew off, and
the steam line sprayed the two employees with steam and hot water. The
employees were wearing safety glasses and work gloves, but were not using any
other shielding or protective clothing. The employees received second degree
burns over 20 percent of their bodies.
Source: osha.gov
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