For replacement of water flood piping by pipes with a larger diameter for FPSO Bonga IMPaC has carried out 3D laser scanning and engineering services. Project challenges were the fabrication & erection of class 2500# high pressure 16” NPS pipes (WT up to 1.9”) and to maximize pre-fabrication in order to minimize field welding requirements. For the survey in a non-stable setting like a swaying vessel, special non-standard surveying methods had to be developed to guarantee results offering accuracy identical to ordinary survey on-shore. 3D laser scanning technology as part of brownfield engineering offers several advantages. In this project all fabrication, examination and testing was completed prior to start of shutdown, and hazards associated with in-field hot work operations as well as safety risks associated with manual measurement techniques were eliminated. Cost savings due to potentially lost production were considerably high as the shutdown period was reduced by approximately four weeks. Pre-fabricated spools were scanned prior to transporting them to site (offshore) to ensure no problems occurred in fit-up due to fabrication tolerances. Re-work caused by inaccurate manual measurements could thus be eliminated.
Scope of Work:
On-site Laser Scanning of water flood piping
Modeling of all relevant parts
PDMS import of all dataGeneration of Isometrics for new pipe spools of 16" NPS
Laser scanning of all pre-fabricated pipe spool pieces to confirm dimensional accuracy