| Stress Output | What it means | Layout Fix (No software required) | | :--- | :--- | :--- | | | Weight + pressure is breaking the pipe. | Add a support. Move a hanger closer to the heavy valve. | | EXP (Expansion) > Allowable | Thermal movement is over-stressing an elbow. | Add an expansion loop. Change a 90° elbow to two 45° elbows. | | OCC (Occasional) > Allowable | Wind or water hammer is the culprit. | Add a guide or limit stop. Brace the line laterally. | | Nozzle Load > Vendor Limit | You are pulling on the pump/vessel. | Reduce anchor distance. Add a flexible joint. | | Displacement > 2 inches | The pipe will hit a structural beam. | Rotate the routing path 15 degrees. Or add a snubber (shock absorber). |
Recommendations for placing supports and anchors to minimize service condition effects. Technical Aids
Fluor training emphasizes manual "hand check" methods to quickly validate a layout before formal software analysis (e.g., CAESAR II): Basic Pipe Stress Analysis Tutorial
| Stress Output | What it means | Layout Fix (No software required) | | :--- | :--- | :--- | | | Weight + pressure is breaking the pipe. | Add a support. Move a hanger closer to the heavy valve. | | EXP (Expansion) > Allowable | Thermal movement is over-stressing an elbow. | Add an expansion loop. Change a 90° elbow to two 45° elbows. | | OCC (Occasional) > Allowable | Wind or water hammer is the culprit. | Add a guide or limit stop. Brace the line laterally. | | Nozzle Load > Vendor Limit | You are pulling on the pump/vessel. | Reduce anchor distance. Add a flexible joint. | | Displacement > 2 inches | The pipe will hit a structural beam. | Rotate the routing path 15 degrees. Or add a snubber (shock absorber). |
Recommendations for placing supports and anchors to minimize service condition effects. Technical Aids
Fluor training emphasizes manual "hand check" methods to quickly validate a layout before formal software analysis (e.g., CAESAR II): Basic Pipe Stress Analysis Tutorial