On December 22, 2017, the project for the complete replacement of the bottom lining of the LOI heating furnace at GUP LPZ in Yartsevo was successfully completed, on the terms of an EPC contract (turn-key). One of the main tasks, in addition to the quality of work execution and the use of refractory materials of appropriate quality, was the requirement of a technical assignment for the timing of lining work. The total period of work, including breaking the old lining, laying a new one, as well as drying it and bringing the furnace to operating temperature, was 21 days