PSV lower than the Flare Header
PSV lower than the Flare Header
(OP)
Hi,
I am designing a CNG plant. The PSV on the compressor package and CNG tube package will be supplied inside the skid. So the PSV will be lower than the flare header.
Is it ok if the PSV is lower than the flare header?
I am designing a CNG plant. The PSV on the compressor package and CNG tube package will be supplied inside the skid. So the PSV will be lower than the flare header.
Is it ok if the PSV is lower than the flare header?





RE: PSV lower than the Flare Header
which should not be openly endorsed.
I suspect it does not meet "CODE".
But it is not an absolute "killer bullet".
Just make sure the PSV design (process & mechanical)accounts
for a standing liquid level in the outlet pipe.
If you can influence elevation of the PSV - you should make the change.
RE: PSV lower than the Flare Header
Only put off until tomorrow what you are willing to die having left undone. - Pablo Picasso
RE: PSV lower than the Flare Header
RE: PSV lower than the Flare Header
What is the "proper" configuration: A relief valve that is higher than the flare inlet, with the valve outlet piping configured to drain its output down to the flare? Seems like that would allow burning fluids back down the pipe after the relief valve closes.
RE: PSV lower than the Flare Header
After internal discussion. We can have an option to put a "sub"flare header. With pocket drain for the liquid.
But the CNG compressor vendor and the CNG Tube Skid vendor said that they normally discharge the psv gas to open air...
that made me wonder, what condition does a gas allowed to be discharge to the air.
RE: PSV lower than the Flare Header
Only put off until tomorrow what you are willing to die having left undone. - Pablo Picasso
RE: PSV lower than the Flare Header
Is there any standard that tells the minimum safe distance?
If we can eliminate the flare system, it surely will be more cheaper.
RE: PSV lower than the Flare Header
See this for OSHA guidelines on the subject.
http:/
Only put off until tomorrow what you are willing to die having left undone. - Pablo Picasso
RE: PSV lower than the Flare Header