Brownfield revamps and debottlenecking
Every revamp begins with sorting the drawing archive the owner provides. PDF scans of 1990s P&IDs, AutoCAD drawings from the early 2000s, native CAD from the last five years, and as-builts of varying quality. Your engineering team spends the first month of the project doing forensic drawing archaeology instead of design work.
Any drawing in any format becomes structured engineering data. The graph you produce in week one is the baseline your design team builds on for the rest of the engagement. Forensic archaeology becomes automated reconciliation.