To limit the probability that the performance of portable extinguishers will fall significantly below expectations in a fire situation, which could lead to the fire not being controlled or suppressed, which could lead to the spread of fire to other parts of the building, which could lead to harm to persons.
To limit the probability of delays in accessing portable extinguishers in a fire situation, which could lead to the fire not being controlled or suppressed, which could lead to the spread of fire to other parts of the building, which could lead to harm to persons.