4.8.7.3.(1)

Intent 1:

To limit the probability of delays in shutting off the flow of liquid 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 damage to the building or facility.

Intent 2:

To limit the probability of delays in shutting off the flow of liquid in a liquid spill situation, 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 damage to the building or facility.