From 04.01 to 21.01 2011 at Boiler Workshop No. 1 was completed modernization of Gas Oven No. 1 with pulse gas combustion. Old conventional lining made of boards ShVP was replaced with advanced high temperature ceramic fiber materials. The hot face surface was lined with Prismo-Block S 160 kg/m3 (340*300*610) complete with side anchoring SК-1, SК-2 and Fiberblanket S 128 kg/m3 (25*610*7320). The total lining area of two furnaces was 304 m2. The installation was completed for 12 days. Now the furnace is under operation.