(1) In this Chapter, a major incident at a major hazard facility is an occurrence that:
(a) results from an uncontrolled event at the major hazard facility involving, or potentially involving, Schedule 15 chemicals; and
(b) exposes a person to a serious risk to health or safety emanating from an immediate or imminent exposure to the occurrence.
(2) Without limiting subregulation (1), an occurrence includes any of the following:
(a) escape, spillage or leakage;
(b) implosion, explosion or fire.