help me: FLARE PURGE GAS

**barbara** · 10-20-2009, 05:53 PM

Hi all,

I need to know how I can calculate the rate of purge gas in flare header.

thanks

**am00** · 10-22-2009, 11:58 PM

You should find what you're looking for on exxon DP - shared on this site in the past

**inzenjer** · 10-23-2009, 12:07 AM

read Fluor Daniel Manuals - Flare Design posted by mhuelva: and attached Shell DEP
best regards
inzenjer

**barbara** · 10-23-2009, 11:02 AM

thk for DP Shell!!!!

regards!!!!!!

Barbara

**rezarm** · 10-24-2009, 07:38 AM

You can find a formula for this in API std. 521 (2007), section 7.3.3.3.3
regard

**akosan4six** · 10-24-2009, 06:17 PM

Thanks for the Shell DP doc!!
akosan4six

**akosan4six** · 10-24-2009, 06:34 PM

Thanks for the Shell DP doc!!
akosan4six

**inzenjer** · 10-24-2009, 08:34 PM

polaris44 has posted Shell DEP v25 and v28
search site for his posts
best regards

**Gasflo** · 10-25-2009, 11:55 PM

Thanks for the Shell DP doc.

We have had and experience with venting a pig launcher to atmosphere. I'm talking about Natural Gas at 500psi. The venting supposed to be controlled but the operator rushed it and the gas ignited.
In our vent pipes we install flap caps to avoid rain water get in. After an investigation of the installation it was found the the metal cap was not connected to earth and electrostatic charge was the cause.
Regards