I suspect some of the confusion stems from not defining the objective
of the spray system. As Scot was discussing, it is typically there to
address the radiant heat from an adjacent fire.
Roland
On Apr 8, 2011, at 7:46 AM, Chris Cahill wrote:
Ok maybe there is some confusion on my part. You and at least some
one else suggested the lower area needs the most help. Could you
explain. The area with fuel inside needs NO help from sprinklers.
It's only the dry steel on the inside that is an issue. Certainly
the bottom in a case of an empty tank needs help. But no more that
the top of a nearly full tank.
Not arguing you don't need sprinklers on the bottom, because you
don't how much fuel is present when the fire starts. I concur heads
are need. Just why the more important.
Chris
-----Original Message-----
From: å... .... <[email protected]>
Sender: [email protected]: Fri, 8 Apr
2011 03:40:30
To: <[email protected]>
Reply-To: [email protected]
Subject: Waterspray Systems for LPG tankers
sub-equatorial spray helps
where help is needed most.
on the wetted underbelly.
but to say direct impingement is necessary
when the proper flux is delivered from the sides and above
might do more to sell sprinklers
than belay our fears.
Most prescriptions were well intended
(for the sales reps and for fire protection),
but not all of the older prescriptions
were substantiated.
when Nature starts reading more NFPA,
is when I start believing what each
30-year old prescription has to say.
(sure I do it anyway, but don't be fooled
just because its a written rule).
I am still sticking with
what I have been seeing:
run down happens.
scot deal
excelsior fire
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