Re: Another one for the books

["petem" <petem001@xxxxxxxxx>]

Not exactly a dry system cause of the 2 pipe system..
the one under air pressure sure look like a dry system...

But the second set of pipe witch have only heads that are fully open is the
one that will eventually have water in it...

a pretty strange setup..

"Crash Gordon®" <NONE@xxxxxxxx> a écrit dans le message de news:
nIc3e.9$%D2.400@xxxxxxxxxxxxxxxxxx
sounds like a dry pipe system?


"petem" <petem001@xxxxxxxxx> wrote in message
news:sEa3e.24958$rl.694508@xxxxxxxxxxxxxxxxxxxxxx
> I have come across a very special type of sprinkler here in a shop where
> they make plastic...
>
> There is 2 line of pipes...one is looking like the normal one we see every
> where but the size of the pipe looks small for the length of the pipe..
> and there is a second pipe with heads at the same level as the first one
> but
> they have no detection device plugging the holes..like if they all been
> triggered..and the pipe is normal size for sprinkler...
>
> the way it work is that pipe with detection heads on it on a small pipe is
> under air pressure and there is no water in those pipes..
> when a head blow because of heat the air pressure drop releasing water to
> the other bigger pipe and flooding the whole place..
> I have seen it in action...boy it was raining like in a tropical storm
> inside...
>
> from what I understood this system was a down fit from water based
> original
> system to a air one (the smaller system) cause they don't heat the place
> at
> all during winter and the original system could not be converted to air
> directly because of some law..
>
>
>
> "Jackcsg" <nospam@xxxxxxxxxx> a écrit dans le message de news:
> ZPmdnf4gK4Qf-tHfRVn-tw@xxxxxxxxxxxxxxx
> > "Robert L. Bass" <robertlbass@xxxxxxxxxxx> wrote in message
> > news:bf6dnX_bSpZnoNHfRVn-tw@xxxxxxxxxxxxxx
> >> > nor do all the heads pour buckets
> >> > of water down at the same time.
> >> > It only happens in Hollywood.
> >>
> >> There is a type of sprinkler system which does that.  It's called a
> >> deluge
> >> system.  Activate it and water sprays out everywhere.  I've only seen
> >> one
> > of
> >> them.  It was a huge warehouse in Farmington, CT.  They had a huge fire
> > pump
> >> and backup generator to provide the necessary water pressure.  We
> > monitored
> >> waterflow, pressure, primary and secondary power, etc.
> >>
> >> BTW, this was a takeover of a huge ADT installation.  The client had
> > broken
> >> off from ADT for reasons unknown to us.  Neither system was functioning
> > when
> >> we arrived, though I don't think it was really ADT's fault.  These
> >> people
> >> regularly broke things.  The burglar alarm was a muxed system with
> >> modules
> >> installed all over the building.  Sensors had (IIRC) 6K EOL resistors.
> >> We
> >> replaced the burglar alarm with a Napco MA-3000.  I forget what we used
> > for
> >> the fire alarm.
> >>
> >> Anyway, we installed the systems, fixed a number of problems with the
> > wiring
> >> and made frequent visits to repair stuff when they would hit things
> >> with
> >> fork trucks.  After a couple of years some character talked his way
> >> into
> >> doing a free "inspection" for them.  He told the client there were
> > problems
> >> with the alarms (which were functioning perfectly) and sold them on an
> >> "upgrade".  They wound up with a single, combined bug and fire alarm
> >> system -- which was not even rated for commercial fire.  They were slow
> >> payers so I was actually glad to be rid of them.
> >>
> >> Oh, by the way, the deluge system had been installed because the prior
> >> owners of the building stored flammable goods.  The people who had it
> >> when
> >> we got there stored computer hardware.  Imagine what would have
> >> happened
> > if
> >> that deluge system went off with a few million dollars worth of PCs on
> >> the
> >> shelves.  :^)
> >>
> >> Regards,
> >> Robert L Bass
> >>
> > I've never run across one. I can see why I haven't though....
> > What did it use to detect a fire?
> >
> >
>
>
>