New South Wales Consolidated RegulationsAn employer must ensure that no person enters a confined space unless all potentially hazardous services that are normally connected to the confined space are isolated or otherwise controlled so as to prevent:
(a) the introduction of any materials, contaminants, agents or conditions that may be harmful to a person occupying the confined space, or
(b) the activation or energising in any way of equipment or services that may pose a risk to the health or safety of a person inside the confined space.
Maximum penalty: Level 4.