Which of the following is NOT typically used in SAChE simplified source term estimation?

• A. Vessel geometry
• B. Opening size
• C. Blockage factor
• D. Detailed CFD results

Answer: (D)

In SAChE’s simplified source term estimation, the goal is to get a quick, conservative estimate using straightforward physical factors that control how a release proceeds. Vessel geometry sets the overall size and potential flow path, opening size determines how much area is available for material to escape, and a blockage factor accounts for obstructions that reduce the release rate. These pieces come together to yield a practical estimate without diving into complex simulations. Detailed CFD results, while valuable for in-depth analysis, involve extensive modeling, time, and resources and aren’t part of the quick, screening-oriented method. So the aspect not typically used here is detailed CFD results.