Re: Flange Leakage analysis

Good day all.
I have a request to cary out stress analysis for some high pressure gas Well flowlines.
Part of the request is to carry out a "Flange Leakage Analysis of PSV inlet and outlet flanges" . Can C2 do any such? What's the Flange leakage analysis all about? I will be grateful if anyone can give me as much enlightenment as is available.


Best regards
Ama_1

Yes CAESAR II can estimate the leakage potential of a flanged joint. Here are three areas for you to research on this subject:

1) The CAESAR II Users's Manual, Chapter 12. There is a section here on flange stresses and flange leakage.

2) A COADE Newsletter , you can click this link or go to the "Newsletter" section of the website and review the "October 1991" issue.

3) Use the "Search" link above to search this Forum for posts on "leakage", you'll find a number of them.

Dear Ama_1,

Caesar II can Analyse a Flange in other to obtain the Stress Analysis & Leak Tightness of the Flange.
Flange Leakage depends on the Gasket, the Flange and the Bolt
The Flange Analysis in Caesar II can be located on the Analysis pull down menu in Caesar II main menu.
To perform this, you have to be versatile with ASME B16.5 & ASME VIII Division 1(Appendix 2 & S)
You will model the Flange with an Anchor and a CNode on the Flange faces.
From the Restraint Summary result of your Static Analysis, you will obtain Fx, Fy, Fz & Mx, My &Mz
One of the Forces will be Axial,(depending on the Global Coordinte) while the associated Moment will be Torsional.
The Bending Moment is obtain by SRSS of the other two Moments.
The obtained Axial Force & Bending Moment are needed for your Flange Leakage Analysis.
All for an ex OZONO.

Cheers
Soj.

Quote:
"From the Restraint Summary result of your Static Analysis, you will obtain Fx, Fy, Fz & Mx, My &Mz
One of the Forces will be Axial,(depending on the Global Coordinte) while the associated Moment will be Torsional.
The Bending Moment is obtain by SRSS of the other two Moments.
The obtained Axial Force & Bending Moment are needed for your Flange Leakage Analysis."

Unquote

It can be easier to use Global Element Forces (132 Column Report)
The report will directly list the Axial Force and Bending moment.

Hope it help.