Employers and self-employed persons must keep any plant supplied for the confined space emergency procedures, such as retrieval equipment, maintained so that it remains fit for its purpose (ss 21, 23, 24). This covers every item the rescue and first aid procedures under regulation 69 rely on, so equipment kept on standby must be ready to work when an emergency arises.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.