Questions for static equipment engineer roles typically focus on specialized engineering codes, equipment design, and site safety. Core Technical Questions
Shutdowns & Maintenance: Explaining your role in turnaround activities, inspections, and hydro-testing procedures.
is for large, welded, low-pressure storage tanks (up to 15 psi). What is the plumpness tolerance for an API 650 tank?
- Impact testing (Charpy V-notch).
- Post Weld Heat Treatment (PWHT) to relieve stresses.
- Selecting tougher steels (e.g., low-carbon or nickel-alloy steels).
- 2:1 Ellipsoidal (most common for high pressure)
- Torispherical (F&D – Flanged & Dished) (economical for lower pressure)
- Hemispherical (best for very high pressure, minimal thickness)
- Flat (only for low pressure, thick & expensive)
When would you use a Spherical Head vs. an Ellipsoidal Head?
Div. 1 follows a "Design-by-Rule" approach with higher safety factors (typically 3.5), whereas Div. 2 uses "Design-by-Analysis" for more precise, often thinner-walled vessels with lower safety factors (3.0), requiring more detailed stress analysis. What is "secondary stress" in static equipment?