Choosing, placing and spacing portable extinguishers has to follow AS 2444, covering risks such as emergency switchboards, cooking oil and fat, stored flammable liquid, occupied areas lacking a hose reel, and school classrooms, with extra units layered on for health care, detention, children's or aged or disability accommodation, and Class 9c settings; Class 2, 3 or 5 buildings and Class 4 parts carry their own extinguisher type, size and maximum walking distance (E1D14).
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.