Isolation separates people from chemicals by distance or barriers: closed systems, glove boxes or glove bags, enclosing a process with exhaust extraction, restricting an operation to a room with access limited to protected personnel, positive pressure operator cabins, and distancing workers. Chemicals should also be physically separated from incompatible chemicals and things by distance, barriers or both. The choice depends on quantity stored, installation type and processes, other activities in the area and other controls, and separation distances should be used where possible so extra controls are not needed. Barriers should account for weather, fire resistance, structural strength and overpressure from incidents. On shelving do not store chemicals above or below incompatible ones, and never where they could contaminate food, food packaging, cosmetics, cigarettes, medication or toiletries.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.