To limit the probability that incompatible liquids will be mixed during normal operations, which could lead to a fire or explosion, which could lead to harm to persons.
To limit the probability of delays or inefficiencies in carrying out emergency response operations in a fire, which could lead to the escape of liquid not being minimized, which could lead to the spread of fire, which could lead to harm to persons.
To limit the probability of delays or inefficiencies in carrying out emergency response operations in a liquid spill incident, which could lead to the spread of liquid, which could lead to the ignition of vapour from a nearby ignition source, which could lead to harm to persons.