Phoenix Journal · Fire Safety
The most common cause of commercial fire is not a fault; it is arson, and most of it happens when nobody is there. That makes it one of the most preventable risks you have.
The most common cause of fire in commercial premises is not a fault or an accident; it is arson, and most of it happens when nobody is there. An opportunist does not break in and rig a device. They set light to the waste left by the back door and walk away. That makes arson one of the most preventable fire risks you have, because it turns on the two things you control completely: what fuel you leave lying around, and how easy you make it to reach.
Most deliberate fires that affect businesses start outside the building, and most are opportunistic rather than planned. The fuel is almost always the same: packaging, cardboard, pallets and overflowing bins left in a yard or against a wall, easy to light and close enough to the building to spread. Because the attack is opportunistic, the defence is too. Reduce the fuel, make the site harder to approach unseen, and lock down the end of the day, and you remove the easy opportunity that most arson depends on. None of it requires heavy security; it requires routine.
Starve the opportunity
Waste is the single biggest lever. Do not let packaging and rubbish accumulate; move it out regularly and store it in metal bins with closed, lockable lids. Keep bins and skips well away from the building, not tucked under a canopy or against a wall where a fire would spread straight into the structure, and arrange collections often enough that waste never piles up. Do not store combustible materials against fences or store flammable liquids and gas cylinders next to the bins. A yard kept clear of easy fuel is a yard that is far less worth an arsonist's time.
Access and visibility do the rest. Good external lighting around entrances, yards and bin stores removes the cover an opportunist wants; secure gates, shutters and fencing, and repairs to broken locks and panels, remove the easy way in; and clear sightlines mean anyone lingering is seen. Where CCTV is used it should be placed to deter as much as to record. Unused spaces, flat roofs and empty units invite trouble and should be secured. None of this should ever compromise the means of escape: fire exits stay usable from the inside even when the site is locked down against intruders.
The out of hours part is a routine, not a gadget. Before locking up, someone should confirm the combustible waste is cleared or secured, no unauthorised person remains, all doors and windows are fastened, and the alarms and security lighting are on. Keeping internal fire doors closed overnight matters more than people think, because it is what limits how far a fire that does start can travel while the building is empty and unwatched. First thing each day, the reverse: extinguishers ready, fire exits unlocked, fire doors not wedged. Small fires or signs of tampering are worth reporting, because they are often a rehearsal for something worse.
Why insurers care
Arson and out of hours risk are not only a safety matter; they are exactly the kind of thing that sits behind the conditions in a commercial policy. Insurers pay close attention to how waste is stored, how the site is secured overnight and how long premises stand empty, because unoccupied and poorly secured buildings are where deliberate fires do the most damage. Falling short on these can be precisely what voids commercial kitchen insurance, so the same end of day discipline that reduces the fire risk also protects your ability to claim if the worst happens. Good housekeeping outside the building is quietly part of your cover.
The fire nobody is watching
The danger of an out of hours fire, whether it starts at the bins or from a fault left running, is time: it can develop for a long while before anyone notices, so anything that helps it spread does far more damage than it would during service. A grease laden extract system is one of those things, a ready made route running unseen through the building for a fire to follow while the premises are empty. It is also one of the factors an insurer weighs when they consider how they assess fire risk in food businesses. Securing the outside against arson and keeping the inside, including the extract, clean and compartmented are the same instinct: give an unwatched fire as little to work with as possible.
Questions
Arson. Deliberate fire setting is the most common cause of fire in commercial and retail premises, and most of it is opportunistic, starting outside the building using waste and packaging left within easy reach as fuel.
Mostly through routine: store waste in lockable metal bins kept well away from the building, clear rubbish regularly, light and secure the site, keep sightlines clear, and run a disciplined lock up that removes fuel and secures the premises, without ever locking fire exits from the inside.
Because a fire that starts when the premises are empty can develop for a long time before it is noticed, so anything that helps it spread, such as a grease laden extract or a propped internal fire door, causes far more damage than it would during service.
Phoenix Duct Clean · by the numbers
A clean extract denies a fire the hidden route it needs to spread while your premises are empty. Phoenix degreases the whole system to TR19 Grease, UK-wide and overnight, with full documentation.