NNPC Gas Infrastructure Company Limited (NGIC) intends to undertake the emergency erosion control works on the exposed sections of Asset Operation East gas pipeline right of ways (Lot V) hence Dieva Roka Limited was contracted to carry out the project following the guidelines in the scope of work.

Dieva Roka Limited’s project objective was to recover the entire pipeline right of way (ROW) within the scope of work spanning the entire 25 meters width of the right of way (ROW) including the river section to effectively restore the pipeline and also protect the boundary walls against erosion.

This close-out report gives a general overview of the project, highlighting the major experiences, successes and failures, problems and solutions, and more importantly, lessons learnt with relevant recommendations where necessary for future NGIC projects. The job was executed with experienced manpower, light, and heavy equipment, and with high safety precautions and standards. Members of the project team have contributed to this report and their contributions have been included and suitably edited to retain their views on the project as much as possible.

Dieva Roka Limited mobilized both equipment and personnel to the site on the 13th of December 2024 and demobilized from the site on the 8th of March 2025 after the successful completion of the “Emergency Erosion Control Works on Exposed Sections of Asset Operation East Gas Pipeline Right of Ways (LOT V) Project. The job scope of work (SOW) involves but is not limited to the following: project documentation, site visit, material procurement, pre-mob inspection and certification of project personnel, secure FTO from the host community, Access Creation, mobilization of personnel, equipment, and materials to the site, site preparation/Set-Up, Gas testing, project scope survey activities, backfilling, excavation, installation of Geocells, Installation of Gabion Baskets, installation of Geotextiles, mark out of pipeline boundary limits, planting of Bahamas and site restoration, back-loading of equipment, demobilization of equipment/materials and personnel from the site.

Following the vandalism of the bypass line connected to the Line Break Valve (LBV) on the 14-inch x 17km Alakiri–Onne Gas Pipeline, Dieva Roka was engaged to carry out emergency patch-weld and replacement works to restore the integrity and safe operation of the pipeline system.
The scope of work involved emergency repair and restoration activities on the affected bypass line section to prevent product loss, restore pipeline integrity, and ensure the safe return of the facility to service. The project was executed by qualified personnel using appropriate equipment and in strict compliance with approved safety and engineering standards.
Dieva Roka completed the emergency repair works in line with the client’s operational objectives and industry best practices.