Sentence 4.6.2.1.(4)

Intent 1:

To limit the probability that vandalism on, or tampering with, the tank or ancillary equipment will lead to the escape of vapour or liquid, which could lead to harm to the public.

Intent 2:

To require additional safety measures to those of the basic requirements of Subsection 4.3.2. [as stated in Sentence 4.6.2.1.(1)].