Model reviews are the best chance for operations, maintenance and construction to see the plant before it is built. Structured reviews at 30%, 60% and 90% progress keep the design on track.

Key takeaways
  • 30% review: layout, access and major routing.
  • 60% review: detailed routing, supports and constructability.
  • 90% review: completeness, clashes closed and readiness for IFC.

30% review

  • Equipment layout and spacing
  • Main pipe rack and major line routing
  • Escape routes and emergency access
  • Crane and maintenance access

60% review

  • Small-bore routing and valve access
  • Pipe supports and stress-critical lines
  • Instrument and electrical routing
  • Constructability and erection sequence

90% review

  • All clashes resolved or accepted
  • Vendor data incorporated
  • Operability walk-throughs completed
  • Outstanding comments closed

Recording comments directly in the model review tool, with an owner and due date for each, keeps the review from turning into an unmanaged list.