Piping Stress Analysis in a typical engineering project is carried out using softwares like CAESAR II. The procedure adopted normally is as follows :
- Based on stress design criteria, stress engineer prepares stress critical lines list.
- Stress Engineer gives it to layout engineer.
- Layout engineer makes sure that lines are routed in 3D Model assuring enough supporting structure is available for the line.
- Layout engineer marks logical supports on line in 3d Model at all locations where it is possible to provide a support.
- Layout engineer then extracts isometrics, check it routing point of view with all components placed as per PID.
- He then issues isometrics to stress engineer.
- Layout engineer keeps track of isometrics issued to stress in a copy of stress critical lines list by adding extra columns to track stress progress.
- Stress engineer marks node numbers on stress isometrics.
- Stress Engineer then inputs the line data in CAESAR using classic piping input spreadsheet of CAESAR II.
- Stress Engineer adds preliminary supports based on judgement and experience.
- Stress Engineer then runs the static analysis.
- Stress Engineer then checks the stress reports for :
- Excessive displacements.
- Nodes exceeding allowable stresses.
- Excessive loads in equipment nozzles.
- Excessive loads on dynamic equipments like pumps, compressors, turbines etc.
- If stress engineer finds everything ok, he finalises supports and give back a copy of stress isometrics with support markup to layout engineer to incorporate those supports in 3d Model.
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