Basic Fire Principles
Fire cannot take place unless three things are present, these are:
Fuel - flammable gases, liquids, and solids.
Ignition Sources - Hot surfaces, electrical equipment, Static electricity, smoking materials, naked flames.
Oxygen - either from the air or oxidising substances.
The absence of any one of these elements will prevent a fire from starting. Prevention depends on avoiding these three coming together. Extinguishing a fire depends on how quickly and effectively you can remove one of these elements from an existing fire, and is particularly difficult if an oxidising agent is present. Once a fire starts, it can quite easily spread from fuel to fuel as heat and intensity increases.
A film set or location will have numerous sources of ignition, some of which are obvious like LPG cylinders being used in or around the catering facility or for heaters in tented areas. But other ignition sources may be hidden inside equipment or machinery like generators, or tower lighting structures. Most of the sources are able to cause accidental fires from within burning outwards but, in the case of arson (about 13% of fires), the ignition source is more likely to burn from the outside in. Film and TV sets are not immune from arson, and due to the various locations that filming takes place, they can sometimes attract unneeded attention. It is not always possible to make film sets and locations 100% secure due to the fact that a lot of filming takes place in public places, like parks, castles, and town streets, it is therefore imperative that the Security officers are also well aware of basic fire safety principles and of what to do in the event of a fire.