Ariadna is actively involved in the implementation of TCO’s overhaul program. These are carefully planned and organized technical measures designed to improve the technology and increase the productivity of the plants and the Tengiz field. They include construction work of the highest category of complexity. In 2018, Ariadne was entrusted with 45 technical tasks, including the repair of sulfur granulation units. Such works with the widespread use of the latest technologies for welding aluminum alloys were performed for the first time in Kazakhstan. At the same time, the quality of work is recognized as corresponding to the world level. The year 2019 was remembered for the company’s participation in the overhaul of the plants of two oil giants at once – TCO and KPO. The work was carried out efficiently, safely and on time.