best practice to validate caesar II report

[Zul78289]

Dear all piping stress engineers,

i hope we all in good condition. i want to ask, is there any best practice can we take to review displacement allowable range (not stress) that occur on piping system and the load on restraint of the piping system for caesar II report review activity?

thank you all

 

[RVAmeche]

What exactly are you asking? It's easier to review the stresses and forces by using Caesar since most models are too large to realistically review thru the Excel/Word reports.

If you're asking what to look for while reviewing; ensuring code stresses < 100% and restraint are adequate (steel/concrete/whatever is strong enough, not excessive movement, etc). Additionally you want to review any equipment connections and compare them with the equipment allowable loads or other criteria.

 

[Zul78289]

Thank you RVAmeche,

"restraint are adequate (steel/concrete/whatever is strong enough, not excessive movement, etc)", is there any best practice for reviewing the safest displacement distance for Dx,Dy,Dz,Rx,Ry,Rz so we can ensure that the value of displacement is safe?

thank you

 

[sjkji]

Dear Zul78289,

is there any best practice for reviewing the safest displacement distance for Dx,Dy,Dz,Rx,Ry,Rz so we can ensure that the value of displacement is safe?

It depends upon the project specs. Usually criteria is: sag (-DY) should be less than 12.5 mm, and Axial Displacement less than 75 mm, if it's more than this value, displacement should be marked on Stress Isometrics, so that the larger shoe (if applicable) could be employed.

Secondly, it's important to check that there is no clash with the adjacent lines.

 

[RVAmeche]

It also depends on the physical space available; ie, how big the gap is on your guided slides, or if there's any equipment/items located nearby that the pipe may hit depending on the magnitude of growth.

There's lots of guidelines for various scenarios; nothing is one size fits all.

 

[Zul78289]

Dear all,

Thank you so much for the answer. But if any cases that the project specification not stated any provisions about maximum displacement either on displacement report or restraint summary.

Is there any standard do you know that regulate this maximum displacement and load on restraint?

Thanks