More FIA Myth Busters

Myth 09: A FR30S will only give 30 minutes protection from the moment a fire starts –

See more at: http://www.fia.uk.com/news/myth-09-a-fr30s-will-only-give-30-minutes-protection-from-the-moment-a-fire-starts.html#sthash.t2DeGbUJ.dpuf

All fire doors are tested from the point at which all objects in the fire compartment have ignited (flashover). Depending on the fire load, the size and shape of the compartment, the time period to flashover can be extremely long or extremely short. For that reason, fire doors are only tested to represent a fire from the point of flashover and not to consider the fire growth period. – See more at: http://www.fia.uk.com/news/myth-09-a-fr30s-will-only-give-30-minutes-protection-from-the-moment-a-fire-starts.html#sthash.t2DeGbUJ.dpuf

Myth 10: If a sprinkler system operates by accident, then all the heads go off

– See more at: http://www.fia.uk.com/news/myth-10-if-a-sprinkler-system-operates-by-accident-then-all-the-heads-go-off.html#sthash.RUZI0IC3.dpuf

Sprinkler heads have to be heated to temperatures in excess of 60°C before they release any water. So in real life it is only the sprinkler heads that are nearest fire that will operate. As soon as water is discharged from the sprinkler head the area is cooled which prevents any other heads from operating. What’s more, the amount of water discharged from a sprinkler head will be between 50 and 100 litres per minute, whereas a fire service hose will discharge between 1000 and 2000 litres per minute. So the water damage is far less with a sprinkler system that it would otherwise be.  It is also worth noting that sprinklers are probably the most reliable fire safety system ever invented; with a false activation rate of less than 1 in 16 million per year. – See more at: http://www.fia.uk.com/news/myth-10-if-a-sprinkler-system-operates-by-accident-then-all-the-heads-go-off.html#sthash.RUZI0IC3.dpuf