The organiser is responsible for ensuring that the event has been planned and organised in such a way that the public can safely participate in it and the arrangements also work when something unexpected happens.  The emergency plan must be submitted to the Rescue Department's on-duty fire prevention officer at least 14 days before the start of the event if: - at least 200 people are estimated to be present at once; - open fire, fireworks or other pyrotechnical products are used, or flammable or explosive chemicals are used as special effects; - the exit arrangements of the event site are different from usual; or - the nature of the event poses a particular danger to people. The on-duty fire prevention officer provides advice and guidance on permits, emergency plans and accident prevention related to public events.