DIRECT ANSWERBefore fabricating column internals, confirm shell datums, tray/support elevations, orientation, clearances, loads, materials, tolerances, access openings, section sequence and field-installation responsibility.
Internals interface basis
- Common shell and internals datum system
- Support rings, clips, beams and loads
- Orientation, clearances, manway access and tolerances
- Trial fit, marking, packing and field installation
Relevant manufacturing capability
- Large shell forming, fit-up and dimensional control
- Sectional fabrication and heavy-equipment handling review
- Inspection, documentation, lifting and transport coordination
Key notes
- Separate suppliers must not use different datum origins.