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View Diary: How Regulation came to be: The Hotel Fires of 1946 - Part II (100 comments)

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  •  Here's a link... (3+ / 0-)
    Recommended by:
    G2geek, Hard to Port, Celtic Merlin

    ...to the Home Fire Sprinkler Coalition website which has (among other things) an animation showing how a sprinkler system works:

    http://www.homefiresprinkler.org/...

    The mechanism that activates the sprinkler sounds similar to the fusible links that are used in roof vents and smoke hatches for commercial buildings.  As such, you don't really need to (or are able to) test them.  Activating the sprinkler basically destroys the trigger mechanism.  It's a very simple mechanism that is virtually foolproof.  The default position for the sprinkler is "on" and some sort of mechanism is used to hold the valve in the off position.  At a certain temperature whatever is holding the sprinkler in the off position melts or breaks and the sprinkler activates.  Any sprinkler that goes off will have to be replaced -- and I'm sure your insurance company will be happy to pay for them.

    Home Fire Sprinkler Coalition has a lot of info on their website.  

    You were speculating about water useage.  The website has some stuff that might give a little idea of requirements.  I think this is probably for all types of buildings:

    According to the Scottsdale Report, a 15-year study of fire sprinkler effectiveness, a fire sprinkler uses, on average, 341 gallons of water to control a fire. Firefighters, on average, use 2,935. Reduced water damage is a major source of savings for homeowners.

    I admit to not being any kind of expert on sprinklers, but it would seem to me that a sprinkler system would have to be under pressure to deliver enough water fast enough to put a fire out, but I don't think that ought to be an insurmountable problem even in an off-grid situation.

    We can have democracy in this country, or we can have great wealth concentrated in the hands of a few, but we can't have both. - Justice Louis D. Brandeis

    by dsteffen on Mon Nov 02, 2009 at 05:42:53 PM PST

    [ Parent ]

    •  thanks... (0+ / 0-)

      I'll go check the website and see what's up there.  

      Much of my design stuff for houses is based on the need for conservation & efficiency, but some of it is directly safety & health related as well.  

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