The role of the CTE is to ensure the production and distribution of steam, electric energy, demineralised water, air service, heated fuel oil, Sea water for refrigeration and fire prevention and waste treatment.

Production and distribution of steam:
The demineralised water is heated to produce high pressure steam in three boilers of pressurized type according to the water tube and natural circulation method.

Steam networks:
High pressure network (45 bar)
Medium pressure network (11 bars)
Low pressure network (4 bars)

Production and distribution of electricity:
The internal electrical energy of the refinery is produced by two turbo-generators TG1 and TG2 from the VHP supplied by the boilers. The STIR uses the external network of the STEG through a reserve line of 30,000 volts which supplies the transformation station of the STEG installed at the STIR with a voltage of 5,500 to 30,000 volts.

Air Station:

Three compressors installed at the CTE air station are used to aspirate atmospheric air and compress it. The compressed air is stored in two balloons:
Balloon V1 for air service
V2 ball for instrument air

Fuel Station:

The fuel oil from the Topping unit, as an atmospheric residue, is stored in two tanks.
After storage, fuel oil, heated by one of the two countercurrent exchangers and by steam, is distributed to supply:
The burners of the boilers of the CTE,
The Topping oven,
The 4 ovens of the RC unit.

External sea water station:
The water supplying the refrigeration network of the products and the cooling of some organs of some pumps as well as the fire protection network comes from the sea (jetty).
The water discharged from the sea passes through a settling basin with a capacity of 3000m3 located at the refinery. A by-pass of the internal seawater station installed in 1985 allows the refinery to supply water directly from the sea.

Internal sea water station:
Its role is to:
Powering the cooling network,
Supply the fire-fighting network,