4.6.2.5.(1)

Intent 1:

To limit the probability that vehicle, watercraft or floatplane impact on, or mechanical damage to, piping will lead to failure of the piping, which could lead to the escape 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.

Intent 2:

To limit the probability that vibration or excessive movement of the piping will lead to failure of the piping, which could lead to the escape 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.