pipe wall thickness 1

[greg211]

Hi everyone,i am having problem calculating the wall thickness of a stainless steel pipe of a thick wall pipe (d/t<20) for a subsea application, a subsea manifold to be precise. Please can anyone furnish me with procedure to calculate it?

 

[BigInch]

What's the code, or do you just need a general formula for pressure stress in a thick walled pipe?


"If everything seems under control, you're just not moving fast enough."
- Mario Andretti
- when asked about transient hydraulic analysis

http://virtualpipeline.spaces.msn.com

 

[greg211]

hi BigInch,the code is 31.8

 

[BigInch]

No special provisions for D/t < 20 that I know of, but my coyp of the code is 2002.


"If everything seems under control, you're just not moving fast enough."
- Mario Andretti
- when asked about transient hydraulic analysis

http://virtualpipeline.spaces.msn.com

 

[Sid7]

greg211
why would you use 31.8 for manifold?

I would use 31.3 for wall thickness and SIF's and use PD8010 for stress calculations.

Siddharth
These are my personal views/opinions and not of my employer's.

 

[BigInch]

If its on a gas pipeline, B31.8 is a valid choice.

"If everything seems under control, you're just not moving fast enough."
- Mario Andretti- When asked about transient hydraulics

http://virtualpipeline.spaces.msn.com