• The contract consisted of design and construction of above ground circular steel potable water steel storage tanks and associated works situated in the vicinity of the East Pumping Station site

• The scope of work included design and construction of four circular steel storage tanks of 90.0m diameter and 15.5 m height with an individual storage capacity of 96,750 cubic metres

• In addition to painting and coating of the tanks exposed components, the tanks included cathodically protected tank bottoms

• The storage facility included 1400 mm diameter inlet and outlet fiberglass pipelines capped off at the eastern side of Road No. 101

• The tanks were equipped with the tank’s fiberglass Washout and Overflow systems, discharging to the sea through a drainage ditch along side Road No. 101

• Each tank was provided with a water level indicator; high and low water level alarms and pump cut-off

• All control signals from each tank instrument were routed to the common Instrument Termination Board located at the site boundary. Also all the power cables from tank’s valve motors were routed to the common Power Termination Board located at the site boundary

• Flow meters were installed on the Inlet and Outlet pipelines and flow indicator on the Overflow system

The main components of this plant were:

• Reinforced concrete ring beam foundations 0.95m wide x 90.0m diameter for the storage tanks, totaling 1500 cubic metres of reinforced concrete

• Four fixed roof steel storage tanks, 90.0m diameter x 15.85m high totaling 7,800 ton of steel and total storage capacity of 387,000 cubic metres

• Inlet Valve Chambers 4.8m x 7.8m x 4.5m deep, totaling 12,00 cubic metres of reinforced concrete, including valves and ancillary chamber piping

• Outlet Valve Chambers 4.8m x 7.8m x 4.5m deep, totaling 1,200 cubic metres of reinforced concrete, including valves and ancillary chamber piping

• Washout Chambesr 3.7m x 7.0m x 2.5m deep totaling 550 cubic metres reinforced concrete, including valves and ancillary chamber piping

• Inlet and Outlet Flow-meter Chambers 3.8m x 11.8m x 6.15m deep totaling 200 cubic metres reinforced concrete, including valves, flow meters and ancillary piping

• Tanks washout system of fiberglass piping connected to the tank’s overflow system

• 1,100m of fiberglass Inlet and Outlet piping 1200/1400mm diameter up to boundary limit of the facility

• Overflow system of 1.0m diameter fiberglass pipe terminating at an Outfall Channel. The Outfall Channel discharges the waste washout and overflow water to the sea through a drainage ditch

• Site Security Fencing

• Security and Area Lighting Systems

• Site works including storm water system, asphalt concrete works and marl patrol roads

• Additional miscellaneous works including road culverts, drainage ditch and outfall chamber

• MANPOWER / SAFETY

The multi-discipline project involved 450,000 manhours with a peak direct manpower of 200 men plus 40 indirect men totaling 240 men