For the purposes of these Regulations a person “dives” if—
(a) he enters—
- water or any other liquid; or
- a chamber in which he is subject to pressure greater than 100 millibars above atmospheric pressure; and
(b) in order to survive in such an environment he breathes in air or other gas at a pressure greater than atmospheric pressure;
and references to “a dive” and “dive” shall be construed accordingly.
Source: The Diving at Work Regulations 1997, UK S.I. 1997/2776, 1997. Regulations