The purpose of this Part is to impose duties on a person conducting a business or undertaking at a workplace to ensure--
(a) the fitness and competence of persons who carry out general diving work and high risk diving work, and
(b) the health and safety of persons who carry out general diving work and high risk diving work, and
(c) the health and safety of other persons at workplaces where general diving work or high risk diving work is carried out.