(1) This section applies if an authorised person believes on reasonable grounds that a dangerous activity is happening or may happen.
(2) The authorised person may give a person who has or appears to have control over the dangerous activity a written notice (a prohibition notice ) that prohibits the person—
(a) from carrying on the activity; or
(b) from carrying on the activity in a stated way.
(3) A prohibition notice—
(a) has effect when it is given to the person or, if a later day or time is stated in the notice, on the stated day or at the stated time; and
(b) is in force until it is withdrawn.