The seawater cooling system in Jubail is a vital utility service, which provides uninterrupted supply of seawater for non-contact process cooling to the primary industries of the Jubail Industrial City.

The seawater cooling facility consists of two pumping stations near the seashore and a distribution canal connected to the customers through numerous underground lateral pipes. Seawater pumped into the distribution canal flows by gravity to the customers and the return water flows by gravity back to the sea.

Seawater drawn from the Arabian Gulf through dredged intake channels passes through coarse trash screens and fine trash screens at the pump stations and is chlorinated before it is pumped into the distribution canal.

The total installed capacity of the pumping stations is 29.9 million cubic meters per day.

Chlorination plants attached to the two pump stations generate Sodium Hypochlorite, which is used for disinfecting the seawater pumped into the canal in order to control marine fouling.

Seawater from the pump stations is conveyed to the customers through the canal system, which is about twelve kilometers long, stretching from east west and north south within the industrial city.

Seawater is supplied to the customers, and returned to the canals, through underground pipes. Return water is discharged to the harbor through a dredged discharge channel.

The pumping stations and distribution facilities are connected to the Central Control Room through DCS and SCADA system.

The pumping stations and distribution system are provided with Cathodic protection to minimize corrosion.

The seawater cooling facility is extended to the new industrial city Jubail 2, by a pump station at the west end of canal 2 and through a network of pressurized pipes.