Bonny Channel Expansion

The Bonny Channel is the main route for oil and gas exports from Nigeria. As the channel could only accommodate Liquefied Natural Gas (LNG) tankers with a capacity of 140,000 m3 the Bonny Channel Company (BCC) intended on expanding the route to allow two-way traffic and 200,000m3 LNG vessels.

PROJECT SUMMARY
Project start: Aug 2006
Project completion: Aug 2008
Sectors: Maritime
Project location: Nigeria

The Bonny Channel is the main route for oil and gas exports from Nigeria. As the channel could only accommodate Liquefied Natural Gas (LNG) tankers with a capacity of 140,000 m3 the Bonny Channel Company (BCC) intended on expanding the route to allow two-way traffic and 200,000m3 LNG vessels.

To support this development CARES were appointed to take responsibility for all aspects of the project, including the site investigation, study, design and supervision of the expansion.

Phase 1 comprised deepening the channel from -12.5m CD to -14.3m CD and widening to 230m. During this phase CARES conducted an Environmental Impact Assessment (EIA) (including baseline monitoring), performed site investigations to confirm the viability of the enlarged channel, completed navigational studies and developed contract documentation. CARES supervised the dredging and hydrographic surveys in addition to carrying out independent checks to confirm the quantities dredged.

Phase 2 expansion will comprise widening of the channel to be the longest channel that permits two-way transits of LNG Carriers, with the quantity of dredging at 20-25 million m3. CARES conducted specialist studies necessary for the Phase 2 expansion which included a hydrodynamic study of sediment movements, navigational studies and EIA.

SERVICES PROVIDED:
Phase 1 services provided include:
  • Baseline monitoring
  • Environmental Impact Assessment (EIA)
  • Environmental management Plan (EMP)
  • Environmental Monitoring
  • Dredging supervision & volume verification
  • Contract documentation
  • Phase 2 services provided include:
  • Hydrodynamic study of sediment movements
  • Site investigations
  • Navigation and hydraulic studies
  • Maritime design to optimize capital and maintenance dredging
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