Detailed engineering goes in parallel to equipment procurement, being its essential part. Equipment manufacturers issue documents with due account of adjusted values of operating parameters as compared to the ones in the initial inquiries. This information completes and details basic engineering, sometimes making some corrections to equipment specifications and process diagrams.
As a rule, construction works start during the implementation of detailed engineering on the basis of prepared design documents.
At this stage, development of 3D models of future process plant is an important stage. Availability of 3D model of piping substantially simplifies the erection of equipment.
