Microtunnels on Ghana’s first independent power plant have been put into action following completion of the commissioning phase.
The tunnels for cooling Cenpower’s Kpone Independent Power Plant were completed by Coleman Microtunnelling using a Herrenknecht utility tunnelling machine last summer.
Completion of commissioning work on the new 350MW oil-gas power plant, which is located 24km to the east of Accra, will improve security of the electricity supply in Ghana and supply 1M households.
The network of 2m diameter cooling tunnels connect the plant to the sea and cover a total distance of 2,530m.
Herrenknecht specially designed the tunnel boring machine with a salvage module for this project. The sea-outfall pipelines are constructed from the coastline into the open sea from where the machine has to be recovered under water and the salvage module prevents the machine and the tunnel from flooding.