thanks all for the reply. I will try to persuade my lead regarding this one.
Unfortunately, the current design instruction in our project is to make our design same
as the existing(like to like).Hopefully this will be changed.
The fluid for the PSV assembly is a process commodity.
It was a closed type relieving system which was most probably the commodity inside is toxic.
My conviction is the reason for the bleeder on the discharge side is to release the build-up pressure between the psv and the isolation valve in...
Is bleeder required between the isolation valve and PSV at the discharge side?
As per API, it shows a typical assembly of PSV with a bleeder at the discharge side, but here on my current project(existing plant) they don't installed bleeder at the discharge.