4.3.12.3.(5)

Intent 1:

To remove the requirement in Sentence 4.3.12.3.(3) for filling connections to be located outdoors if:

• certain conditions exist [the tank is directly associated to a process or activity located indoors, or is used for the collection of used liquids], and
• measures are taken to minimize the accumulation of vapour inside the building.

This is to limit the probability of the ignition of vapour from a nearby ignition source inside the building, which could lead to harm to persons inside the building.