Watermist fire sprinkler designed to minimise water damage
When a traditional fire sprinkler activates it can produce 60 litres of water per minute, enough to fill a bathtub in 2 minutes! Not only fires trigger sprinkler heads, accidental activation can occur, especially in areas with high traffic flow or boisterous behaviour. Students have been known to hang washing in sprinkler heads and break the vial activating the head. People moving office furniture may even hit the head to activate it. This is why devices like the Shutgun are often deployed in sprinklered buildings to minimise the water damage from activated fire sprinklers, as you can’t always find or get access to the shut-off value, which may be many floors below.
The Association of British Insurers (ABI) is the voice of the UK’s world-leading insurance and long-term savings industry. In their response to the London Assembly Planning Committee Review for Installing Sprinklers in London’s Buildings they said:
2.5 There is a risk that the introduction of more pressurised water systems into dwellings will cause an increase in the number and value of escape of water claims. This is of concern to the insurance industry as escape of water claims are the most consistently expensive peril for domestic property insurers.
- Zurich® Insurance infographic - Reduce the risk of unexpected water damage.pdf [1.33MB]
- ABI Response to London Assembly Planning Committee Review for installing Sprinklers in London's Buildings - ExecutiveSummary.pdf [369KB]
- Shutgun: The best defence against the hazardous and expensive effects of fire sprinkler water damage - Flyer.pdf [816KB]
What's the Alternative?
Automist Smartscan was designed to minimise the risk of leaks and minimise the consequential water damage of activation, whilst providing powerful performance (BS8458). It activates reliably only when triggered by a double knock alarm. Both the detector and the smart scanning head must confirm the presence of a dangerous fire. We then target the location of fire with a dense fog, which uses small droplets to absorb the heat of the fire, blocks radiant heat transfer and causes local inerting.
It is a dry pipe non-pressurised system which will provide the coverage you need without the risk of burst pipes. Unlike a wet pipe system, dry sprinklers are free of water until a fire is detected.
The additional benefit of this low flow requirement is that it can be connected to an existing water main. This avoids communal works, the need for tanks or upgraded water supplies.