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Any Sprinkler Experts Out There
#1
I have come across a premises with 3,500 sprinkler heads. The system was installed within the last 10 years. 
They have suffered almost 1 sprinkler head failure a year, where a head has sheared off leaving the open end to flood part of the building.

Despite lots of investigations and changing the heads, the problem persists. 

So is a 0.03% catastrophic annual failure rate acceptable in the sprinkler world?  That equates to a major flood per year and the clients aint happy bunnies!
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#2
That’s really not great really, is it literally random failures or is it someone maybe interfering?
*Hits call point*... "we are on test aren't we?"... Whoops 
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#3
(01-02-2020, 02:21 PM)Harrysu Wrote: That’s really not great really, is it literally random failures or is it someone maybe interfering?

Definitely nobody interfering as the building works 24/7 (so they would be seen) and one of the heads was in an atrium and only reached by a scaffold tower. Plus it would need somebody with a lump hammer swing violently up a ladder and getting down in one piece before hiding the ladder in an occupied building

Remnants of the sheared material has been independently tested and came back inconclusive, and virtually all the heads have been changed. Even then, one 'new' head  has since failed

The client is now costing converting the whole installation to a dry system to reduce the damage and tethering or fitting a net/mesh under heads to catch them! I have never come across such a failure rate
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#4
Most bizarre! Not in keeping with the usual 1 in 14 million failure rate for sprinkler heads.
Anthony Buck
Fire Safety Technical Lead @ BAFE SP205 accredited company
Extinguisher specialist

http://www.facebook.com/group.php?gid=65...415&ref=ts
http://www.youtube.com/user/contactacb
http://www.linkedin.com/pub/anthony-buck/22/957/36b
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#5
Could it maybe be something in the water? Maybe something is causing something to break apart quicker than it would normally? Might be worth getting the water tested to rule it out?

What about the pressure? Is it the correct pressure or is it too high? It could perhaps be putting too much strain on the heads?
*Hits call point*... "we are on test aren't we?"... Whoops 
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