The person with management or control of plant ensures operator controls are identified, readily operable, protected from unintended activation and lockable off to disconnect motive power; where operation during maintenance or cleaning is unavoidable, controls allow operation only by the maintainer (or, where others must operate it, only by a person the controller authorises) and in a way that eliminates or minimises risk; multiple emergency stops on multi-operator plant are stop-and-lock-off; emergency stops are prominent, marked, accessible, red and not defeated by circuit faults; and warning devices are positioned to work best.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.