Jump to content

  • Log in with Facebook Log In with Google      Sign In   
  • Create Account


ChExpress Blog - 10/15/14

Read the latest news from the chemical industry in Christa's blog.

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

Air Vessel Sizing for Water Hammer Prevention

Nitrogen Purging Of Pipeline


This topic has been archived. This means that you cannot reply to this topic.
8 replies to this topic
Share this topic:

#1 jescabrera

jescabrera

    Brand New Member

  • Members
  • 3 posts

Posted 29 May 2009 - 01:12 PM

I'm looking for a procedure for the nitrogen purging of pipelines after hydrostatic testing. Please advise.

#2 proinwv

proinwv

    Gold Member

  • ChE Plus Subscriber
  • 348 posts

Posted 29 May 2009 - 01:25 PM

Could you give us more detail please.

#3 jescabrera

jescabrera

    Brand New Member

  • Members
  • 3 posts

Posted 30 May 2009 - 06:03 AM

Direct-buried chilled water and steam/condensate piping that will be installed but will not be in service for some time. We'd like to dry the inside of the piping after hydrostatic testing and then "pickle" the piping until the system is placed in service.

#4 proinwv

proinwv

    Gold Member

  • ChE Plus Subscriber
  • 348 posts

Posted 30 May 2009 - 07:32 AM

Well the foremost issue that I find is how will you know that the line has been properly dried? Is the line very long? Being buried that would make it more difficult, especially considering that there might be low spots that accumulated moisture.

The purge would be simple. Inject at one end through a flowmeter to see the flow rate.

In tank work there are various methods to determine how much purge is needed to purge.T y this reference:

Purge reference

Otherwise you might search further.

#5 proinwv

proinwv

    Gold Member

  • ChE Plus Subscriber
  • 348 posts

Posted 30 May 2009 - 07:35 AM

I am not sure that the hyper link is working. It seems that the link is dead. Since this was posted originally for open use on the internet, and I made a copy of it, I am attaching the file.


Attached Files



#6 fallah

fallah

    Gold Member

  • ChE Plus Subscriber
  • 3,239 posts

Posted 01 June 2009 - 02:15 AM

QUOTE (proinwv @ May 30 2009, 08:32 AM) <{POST_SNAPBACK}>
The purge would be simple. Inject at one end through a flowmeter to see the flow rate.


Would you please explain above in detail?


#7 jescabrera

jescabrera

    Brand New Member

  • Members
  • 3 posts

Posted 01 June 2009 - 05:13 AM

Thanks for the information but could you please provide more information? For example, are there any parameters such as the temperature of the nitrogen that needs to be injected, the flowrate, the types of fittings to use, etc.


#8 proinwv

proinwv

    Gold Member

  • ChE Plus Subscriber
  • 348 posts

Posted 01 June 2009 - 06:01 AM

Please excuse the bluntness, but if you are asking these questions one would question whether you should be taking on this project.

I suggest that you consult with some experienced engineer(s) in your organization, or engage the services of a consultant.


#9 Iftikhar

Iftikhar

    Brand New Member

  • Members
  • 1 posts

Posted 13 November 2011 - 05:51 AM

thanks

I am not sure that the hyper link is working. It seems that the link is dead. Since this was posted originally for open use on the internet, and I made a copy of it, I am attaching the file.


thanks dear i got it




Similar Topics