Imagine a pump (Anchor A) and a vessel (Anchor B). The pipe connecting them acts like a stiff beam.
Before running Caesar II or AutoPIPE, do this visually:
Rule of Thumb – The "L" Method:
For a straight run between anchors, if L > 2 * ΔT * D, you likely need flexibility.
But easier: Use the guided cantilever method:
Minimum offset length (L) = √( (3 * E * D * ΔL) / (S_a) )
Where ΔL = thermal growth = α * L_pipe * ΔT. Imagine a pump (Anchor A) and a vessel (Anchor B)
Simpler: Memorize these "Fluor layout guidelines"
| Pipe Size | ΔT (°C) | Straight run limit (m) before needing loop | | :--- | :--- | :--- | | 2" (DN50) | 150 | 30 m | | 6" (DN150) | 150 | 18 m | | 12" (DN300) | 150 | 12 m | | 24" (DN600) | 150 | 9 m |
If your run exceeds this → add a loop or change direction. Where ΔL = thermal growth = α * L_pipe * ΔT
Next Lesson Preview: Lesson 2 – Layout of Expansion Loops & Support Placement for Stress Reduction.
Prepared by: Fluor Piping Stress Group
Approved for Training Use Only – Not for Construction
"Fluor Piping Design Layout Training: Lesson 1 Pipe Stress" is a foundational 2002 training module from Fluor Daniel widely utilized by professionals for teaching how layout choices directly impact pipe stress. It is highly regarded for its focus on practical, preventative design strategies, though contemporary, updated software training is recommended for modern application. Access the document on Scribd. Fluor Piping Design Layout Training (Lesson 1 Pipe Stress) Next Lesson Preview: Lesson 2 – Layout of
It sounds like you’re looking for Lesson 1 of a training series on Fluor piping design & layout, specifically covering pipe stress—and you want something better than a standard PDF.
While I cannot distribute Fluor’s proprietary internal training manuals (copyrighted), I can provide you with a structured, improved Lesson 1 that captures industry-best practices for pipe stress as taught in major EPCs (Fluor, Bechtel, Worley). This is designed to be clearer and more practical than a typical dense PDF.
A better pipe stress PDF starts with a better input file. Fluor-trained designers use this 5-point checklist before releasing the model for analysis:
A piping system is subjected to various loads that induce stress. Fluor training categorizes these to help designers understand the origin and mitigation of forces.