Zishan Engineering completed engineering and design work on the pipeline, and construction began on the pipeline in November 2008.
Oilserv Nigeria Ltd is the primary construction contractor on the project. The scope of work under the contract includes right-of-way (RoW) survey; pipeline trench excavation; stringing and welding of the pipes; non-destructive testing of the welded joints; field-joint coating; flushing, hydrotesting and drying; and, execution of the associated civil works.
East Horizon Gas Company (EHGC) also subcontracted major aspects of the project, including horizontal directional drilling (HDD) and swamp pipeline construction, to local contractors Enikkom and MJD Oil Services respectively. In addition, EHGC engaged the services of NACE-certified Solewant/Kema Coating Nigeria Ltd to undertake corrosion coating of the field bends and their girth welds.
Oando Gas & Power is committed to safety, quality, health and environment standards. The pipeline design and construction is compliant with the ASME B31.8 standard, and the pipeline is fitted with pressure relief valves set at 10 per cent below the pipeline maximum allowable operating pressure.
The pipeline is built to the Nigerian standard of Class 2 Human Density. This category necessitates the installation of automatic line-break valves located at intervals prescribed by the applicable codes, and at the banks where the pipe crosses a waterway.