A 28” x 28” Split-Tee was installed and welded by both Longitudinal and Circumferential welds. The project intention was to stop third parties from accessing products from the 28” TNP Nkpoku – Bomu pipeline @ Rumukwurushi.
Details of Scope:
- Excavation to expose the Illegal connection
- JIV to confirm the Illegal connection
- Ditch was set up
- Decoating and pipe surface preparation for fit up & welding activities
- Preliminary NDT (VI, UT, MPI, Flow rate) on the affected section of the run pipe
- Cement grouting on the illegal connection
- Preheating
- Fit-up of Split-Tee and welding(Longitudinal & Buttering)
- Carry out NDT (Dry MPI) on the Buttering weld
- Completion of the circumferential weld
- Carry out NDT (Wet MPI) on the Longitudinal & Circumferential weld
- Concrete mixtures(cement mortar) to cover IC
- Capping
- Coating using Heat Shrinkable Sleeves
- Ditch set up materials were removed
- Excavated ditch area backfilled and Site Restoration.
