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Anonymous Poster #1

Fire Protection System Activation

10/18/2013 4:05 AM

We have a wet detection system with upright sprinkler heads with quartzoid bulbs. The system was activated when these bulbs ruptured but these bulbs are remotely located (above fuel oil tanks) , it is summer , there are no high temperatures near the bulbs and accidental mechanical damage is ruled out since access to the area is difficult, what could have caused rupturing of the bulbs other than physical damage or high temperature ?

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Guru
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#1

Re: Fire Protection System Activation

10/18/2013 4:12 AM

How about:

  • Vandalism?
  • Bird strike?
  • Earthquake?
  • Sonic boom?
  • Lightning strike?
  • Etc.
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#4
In reply to #1

Re: Fire Protection System Activation

10/18/2013 11:59 PM

one of those etcs could be excessive water pressure.

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Guru
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#8
In reply to #4

Re: Fire Protection System Activation

10/21/2013 3:59 AM

Do feel free to add a few more.

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#7
In reply to #1

Re: Fire Protection System Activation

10/21/2013 3:47 AM

Hi

Thank you, your comments sparked some probing!!! When you mentioned earthquakes I remembered that the mine next door has recently been doing some blasting which has caused some slight tremors at our site :-)

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#9
In reply to #7

Re: Fire Protection System Activation

10/21/2013 4:03 AM

Sounds like the place I just finished working at.

There was a quarry about 1km from our site. When they blasted the whole place shook and then the boom was heard.

I'm not sure if it could be described as a slight tremor. I have no personal reference experiences with earthquakes. Definitely made things rattle though. One single surge more than a sustained shake.

You say that you have a mine next door. That sounds close enough to feel.

How will you determine if this is in fact the cause or otherwise? This could get interesting.

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#10
In reply to #7

Re: Fire Protection System Activation

10/21/2013 4:51 AM

Well, that's that sorted out, then.

Next!

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#2

Re: Fire Protection System Activation

10/18/2013 11:44 AM

What did the manufacturer of the devices say when you asked them for help?

(I can imagine what they would say)

Did you contact Carnac?

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#3

Re: Fire Protection System Activation

10/18/2013 10:37 PM

Was design,installation & testing done as per codes by approved personnel.

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#5

Re: Fire Protection System Activation

10/19/2013 5:11 AM

Was a air release valve installed in the highest point of delivery in this system to stop water hammer ? if not that may be the start of your problem

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#6
In reply to #5

Re: Fire Protection System Activation

10/20/2013 5:03 AM

Air release valve is for self bleeding of entrained air, your thinking about a hammer arrestor. Different widget mate.

But yeh, a big water hammer event (possibly repetitive light hammering) is worth investigating.

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