B) Zambia
NGM Consulting Engineers Ltd has been involved in 3 major water projects in Zambia that involved Design and Construction Supervision of New Treatment Plants, Water Distribution Centers, Transmission mains and Water Distribution pipe networks.
Other works involved the production of water demand models for water systems and the rehabilitation of existing concrete water tanks and treatment plants, including filters and clarifiers.
1.1 Nkana East New Water Treatment Plant
The works above were part of the Nkana East New Treatment Plant Design and Construction Supervision works. A new 66,000 cubic meter Water Treatment Plant was constructed to reinforce the existing plant. It included a splitter chamber, mixing chamber, flocculation basin, sedimentation basin, Filters, a filter gallery, a clear water tank and a back wash tank. The estimated value of this contract was $5 million Dollars and was conducted under FIDIC.
Under this same contract NGM Consulting designed and supervised the construction of a Chlorine Building, Chemical Building and the rehabilitation of the existing plant. The works included the installation of new pumps in the existing high lift pump house, rehabilitation of existing clarifiers, rehabilitation of existing filters, installation of new back wash pumps, and installation of new valves and replacement of filter siphons.
We were responsible for checking the quality of the works and approval of all the materials, design reviews measurement of completed work and preparation of measurement forms that formed part of the payment certificates for approval by the main consultant. We were responsible for the safety, material tests approvals and final inspection of the structures before they were certified complete and handed over to the client