Jump to content

Featured Articles

Check out the latest featured articles.

File Library

Check out the latest downloads available in the File Library.

New Article

Product Viscosity vs. Shear

Featured File

Vertical Tank Selection

New Blog Entry

Low Flow in Pipes- posted in Ankur's blog


Pressure/ Vacuum Vent Valve Needs Discharge Line?

2 replies to this topic
Share this topic:
| More

#1 PSU


    Brand New Member

  • Members
  • 5 posts

Posted 17 December 2019 - 09:40 PM

Dear Sir


When I have reviewed PSV shown on P&ID, discharge line of PSV has been specified with note that it shall be 10 feet far away from equipment in case of releasing to ATM.


On the other hand, Pressure/ Vacuum Vent Valve at atmospheric tank is always specified to release to ATM, also. I was wondering why 10 feet far away from equipment will not be applied for.


Could you please give me the advice or more explanations or reference?

#2 breizh


    Gold Member

  • ChE Plus Subscriber
  • 4,591 posts

Posted 18 December 2019 - 12:40 AM

Hi ,

I believe this has to do with the safety , to ensure no obstacle to affect the release ( read the PP about the distances , vertical and horizontal) .

note : make sure the release is not on a walk way which could affect human .


My view



Attached Files

#3 PSU


    Brand New Member

  • Members
  • 5 posts

Posted 18 December 2019 - 08:50 PM

Dear breizh


That's very kind of you for giving me the advice and reference. I used to join the inspection team to check tank farm.

I have not found Pressure/ Vacuum Vent discharge at least 10 feet above the platform before. However, I have observed that orientation of out breathing is not on the walk way. It should be safe enough.

Similar Topics