Previous in Forum: Converting from Belt Drive to Chain Drive   Next in Forum: Velocity of Cooling Water
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
Rate Comments: Nested
Anonymous Poster

Pressure Testing at Max. Flange Rating (Piping)

11/23/2010 1:30 AM

I understand that it is possible to pressure test a piping system at its max. flange rating i.e. A106-B 150# @20 barg. Since pressure leak test is 1.5x Design pressure (B31.3), the test pressure will be 28.5 barg. With this presure, we are above the 150# rating without the need to go to the next class rating i.e. 300#. Where in B31.3 is this stated explicitly?
Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
pritam
Guru
Engineering Fields - Mechanical Engineering - New Member India - Member - New Member

Join Date: Aug 2008
Location: City of destiny, INDIA
Posts: 775
Good Answers: 67
#1

Re: Pressure Testing at Max. Flange Rating (Piping)

11/27/2010 4:17 AM

Pressure test is for the piping system, not for the flange. Please see what are the working pressure and design pressure of the piping system & then pressure leak test at 1.5x Design pressure as per ASME 31.3.

Rating and test pressure are two different things. Test pressure is always higher than the rating.

If still in doubt, why do'nt you go for pneumatic leak test at 1.1x Design pressure as per ASME 31.3.
Reply
Reply to Forum Thread
Have a Different Question?

Previous in Forum: Converting from Belt Drive to Chain Drive   Next in Forum: Velocity of Cooling Water
You might be interested in: Piping Services, Flange Protectors, Piping Systems

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Mechanical Engineering:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (61 right now)
Show Members
Advertisement