Work

Designing the Benguela and Lobito Water Conveyance System

Location

Benguela - Angola, Africa

Overview

The Ministry of Energy and Water (MINEA) commissioned Dar to review the design and supervise the construction of the Benguela and Lobito water conveyance system. The project increased the water supply to the coastal cities of Benguela Province, Lobito, Benguela, Catumbela, and Baia Farta, for they were suffering because of an insufficient water supply.

At a glance

86,400

m³/day water treatment plant

1.7 million

target population

The project

The project increased the availability of water from 26 l/day/capita for Benguela city and 22 l/day/capita for Lobito and Catumbela to 150 l/day/capita. The project aims to provide, by the year 2025, a total production of 3.5 m3/s to attend to the needs of these cities.

Our teams worked together to provide:

  • 50 km of transfer lines, with diameters ranging between 300 mm and 800 mm
  • A 250-km water distribution network, with diameters of 100 mm, 150 mm, 200 mm, and 600 mm
  • A raw water pumping system containing an intake in Catumbela City
  • A new water treatment plant with a capacity of 86, 400 m³/day
  • The upgrading of existing power substations
  • MV switchgears (30 kV)
  • Main distribution boards and motor control centres
  • LV networks (cables, wires, conduits, pull and terminal boxes) indoor and on the sites of water pumping and control stations
  • Lighting, convenience and power socket systems in substations and control rooms
  • Emergency supply systems installed at pumping stations (generator sets, batteries control panels at auto startstop and control functions, exhaust, fuel and ventilation systems, concrete
    Foundations, and sound proof facilities)
  • New lightning protection systems connecting to existing earth systems.

Our work on the water conveyance system has ameliorated the lives of the cities’ inhabitants and continues to do so.