Commercial divers have some of the most physically demanding jobs out there. Long periods of time spent in cold, murky water can cause a host of physical ailments, and the work often also involves construction or demolition projects executed with dangerous equipment.
Proper training of both diver employees and their employers is essential, and the U.S. Occupational Safety and Health Administration (OSHA) issues standards by which commercial diving operations must be conducted.
OSHA recently updated Part 1910, Subpart T of the regulations related to commercial diving. The changes are found in Directive Number CPL-02-00-151 issued June 13, 2011.