Is it just okey to input design,operating and ambient temperature only and installation temperature is not inputted. My reason is that the value of installation and ambient are just closed. For installation temperature 27 degree celsius and for ambient temperature 22 degree celsius.The differece is just 5 degree celsius.

I input at special execution parameters the value of ambient temperature which is 27.For extended operating temperatures, i only inputted the values for design and operating.For installation,it is being neglected.

Do my inputting strategy right?

Please give me nice idea.Thank you in advance.

Installation temperature is a standard setting. Calculating the expansion stresses CII will always use a temperature range based on your inputted design temperature (entered in the temperature fields in the piping input) and the standard set ambient temperature (to be found in the preferences).

The expansion range can be computed between any two load cases, simply define the EXP case as "Lx - Ly", where "x" and "y" represent other previsously solved load cases.

The expansion range can be computed between any two load cases, simply define the EXP case as "Lx - Ly", where "x" and "y" represent other previsously solved load cases.

In our project we only use load cases recommended by caesar II. We didn't edit the load cases. Is that so important to make load cases like EXP case as "Lx-Ly"?

The "Code" wants you to evaluate the "extreme stress range" that your system will experience. CAESAR II can determine stress ranges between each of your Oerating cases and the Sustained case. However, CAESAR II can't determine if these represent the "extreme" range - you as the Engineer have to do that.

For example, consider a job with T1 = 400 and T2 = -100. CAESAR II will setup these load cases:
1) W + P1 + T1 (OPE)
2) W + P1 + T2 (OPE)
3) W + P1 (SUS)
4) L1 - L3 (EXP)
5) L2 - L3 (EXP)

You as the Engineer need to recoginize that if it is possible for your system to cycle between T1 and T2, then you need one more load case:

6) L1 - L2 (EXP)

and this in all likelyhood will be the "extreme" stress range. (If T2 was 350 deg this last case probably wouldn't be necessary.) CAESAR II is not evaluating your numbers and trying to guess what your intentions are. You must look at your system and its operation and decide if the recommended load cases are sufficient.

Hope using the attached file will help.

Look at the load cases shown at the bottom of page 2 of this (above) attachment.

Nuzul,

Your Q is totally different with this topic "Temperature inputting". It should be addressed in new topic. Please learn how to start a new thread/topic, private message, and search tools (on above right) in this forum. Please use English.