The purpose of this part is to impose duties on a person carrying out 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.