Pipe stress analysis

I am using CASAR II to determine the stress analysis of a 33km pipeline from one flowstation to another.
The design parameter are: Design pressure 100bar, operating pressure 70bar, design temp 60 deg., operating temp 35 deg, API 5L X52 Pipe, Nominal pipe size 6", sch. 120,.

I want to know how to use Caesar II in modelling from piping to pipeline.i.e from the flowstation to the undergound pipeline.

There is a "buried pipe" example in the Applications Guide. Review this first.

Dear all Good Mornning,

I have doubt on Displacment input.

In my case my starting node 10 is butt weld to tank nozzle. So in model i put anchor on that give connecting node "11" on that, then put the displacment value at connecting node 11. But When i run it in restraint Summary Only forces value is showing , Moments is all ZERO.

Why moments not showing in Report. Kindly tell me.

Anuj Gupta
Piping Stress Engineer
------------------------
It's A Wonderfull Day

You need to specify also rotational displacements even these are 0, otherwise cnode 11 is free to rotate.

Dear dan

Good Morning

Yes you are right, Yersterday i solved this problem.

Thanks for this guidance.

Be careful with specifying displacements. A blank field means that DOF is free. A zero means that DOF is fixed with a displacement of zero magnitude.

Dear all,

Good Morning

Kindly tell me some basic fundamental of analysis, like if our axial laod is greater then allowable loads so we can use taflon pad (mu-0.1). So
what's the other fundamentals for Longitudanal & Circumferential Forces & Moments.

Have a great day

Anuj,

Since you sign yourself as a 'piping stress engineer', you should be answering these questions yourself.

Good morning

Yeah sure i will find it.

But have you pdf of L C Peng. Currently i am reading Sam Kannappan's Introduction to "PIPING STRESS ANALYSIS".

If you have LC PENG's Book for stress analysis Kindly send me at my Email;- anujgupta1116@gmail.com

You should buy this book, it is a copy-righted work. You want to get paid for your work right?

Ok Richard

Dear Sir,

Kindly Give me Exact answer of " Why we can not check Stress in Operating Condition?"

as i know to check this we use Appendix P option but i want to know What is the reason behind that caesar cant perform stress checking in operating condition.

Go through the code.I suppose you're using B31.3. See for yourself are there any allowable or equations for operating stresses??

You'll get your answer. Also, your interpretation about App P need to be revisited. May be you can ask your seniors for more guidance.

Read this earlier thread, which is a "sticky topic" at the top of the Forum.