Re: Condensate tramps on fuel gas lines

From: <elie>
Date: Mon Oct 01 2007 - 22:30:00 EDT

It is a condensate traps NOT condensate tramps.

1. Treat or consider the condensate trap as a liquid dump valve.
2. Do not oversize the trap, use the smallest one that would dump the estimated flow rate of condensation.
3. Request from the trap's vendor the wide open flow capacity of the trap, assuming the trap will fail wide open at the MAOP or MAWP of the fuel gas line (to be conervative).
4. Install a safety relief valve on the condensate line set at the condensate line MAWP and sized it to relive the trap's wide open flow capacity.

   Do not cut corner to save money or to please your boss.

   The best things in life are not things.

yolmar <yolmar@yahoo.com> wrote:

           Hello,

As per Process requirement, we have to include condensate tramps on fuel gas lines. I am concerned because tramps discharges are into the condensate system, which is a low pressure system. Condensate lines related to pressure vessels are provided of RO's to drop the pressure, but condensate tramps are not designed to drop pressure, therefore if those tramps failed, fuel gas at high pressure will entry into the condensate system.

Are there any special requirements for condensate tramps design? Do we need to use some instrument control to prevent fuel gas leakage into the condensate system? Which is the recommended distance between tramps?

I really appreciate your help.

Yolmar Leon

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[Non-text portions of this message have been removed] Received on Mon Oct 01 22:30:00 2007