Occupational exposure to heat can result in injuries, disease, reduced
productivity, and death. To address this hazard, the National Institute for
Occupational Safety and Health (NIOSH) has evaluated the scientific data on
heat stress and hot environments and has updated the Criteria for a Recommended
Standard: Occupational Exposure to Hot Environments. This document was last
updated in 1986, and in recent years, including during the Deepwater Horizon
oil spill response of 2010, questions were raised regarding the need for
revision to reflect recent research and findings. This revision includes
additional information about the physiological changes that result from heat
stress; updated information from relevant studies, such as those on caffeine
use; evidence to redefine heat stroke and associated symptoms; and updated
information on physiological monitoring and personal protective equipment and
clothing that can be used to control heat stress.

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AplusA-online.de - Source: The National Institute for Occupational Safety and Health (NIOSH)