Horizontal tanks, manufactured in accordance with the Algerian regulations in force, relative to equipment under steam pressure (Executive Decree N° 90-246 of 18/08/1990). It is made of black steel sheet, welded by certified welders. The minimization of heat loss is ensured by a rock wool covering of 80 mm thick, covered with an external protective cover made of stainless steel sheet. The calculations inherent to the parts under pressure, the choice of grades of construction steel, welding procedures as well as various safety recommendations fall under the Construction Code for Steam Generators and the Algerian standard NA 16687 equivalent to the European standard EN 12 953. The fittings and controls comply with international standards.