Depending on the level of risk the PCBU may install an automatic sprinkler system, which can control a fire almost immediately. They may not suit every workplace, for example where water is unsuitable because chemicals react with it. Systems may use individual-actuation sprinklers, deluge sprinklers, foam sprinklers or a combination.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.