Monday, November 7, 2011

RE: Flare and Degassing Stacks

Bill,
I am not aware of any significant thrust loads from the startup or operation of a gas flare.  The operational pressures are low.  The thrust from ignition is minimal.  A petrochemical blast from a vapor cloud in the general area could create some unintended loads.  A deflagration load can approach about 4 psi. 
 
I presume you are designing to STS 1?

Regards, Harold Sprague
 
> Subject: Flare and Degassing Stacks
> From: bill@polhemus.cc
> Date: Mon, 7 Nov 2011 14:08:57 -0600
> To: seaint@seaint.org
>
> Dumb Question:
>
> Is the startup and/or continuing operation of gas flares accompanied by any significant thrust that the designer of a foundation for such might find significant?
>
> William L. Polhemus, Jr. P.E.
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