Every engineering firm has a checklist for extracting piping MTO from a 3D model created in various packages like PDMS, PDS, SP3D etc. It ensures good quality of MTO which is error free and which requires least amount of post processing. Here is a typical checklist to extract piping MTO from 3D Model.
| Sr | Check Item | Done |
| 1 | MTO OFF/ Non reportable category report is generated from model and checked for the actual requirements. | |
| 2 | Data verification/Data consistency reports and RDB conflict reports generated and cleared. | |
| 3 | Ensure model is updated for latest revision of P&IDs. | |
| 4 | Ensure that cleared items in hold list is updated in model. | |
| 5 | Ensure Hold items are identified in downloaded MTO. | |
| 6 | MTO for the lines not modelled or captured as per line list/highlighted P&IDs is manually added into the MTO. | |
| 7 | Ensure with design team that, MTO is non-reportable for items modeled for temporary purpose.(e.g. Flange modeled to show continuity with existing line at Tie-Ins) | |
| 8 | Ensure future model MTO is not considered during extraction. | |
| 9 | P&ID MTO (Valves, Specialty items, etc.) |