Furnace lining has been in operation since 2008, and after putting the boiler into operation for 12 years has not undergone significant restorative repair. Despite the long term and "heavy" regime boiler operation in incinerator mode, in order to utilization of production waste with a high degree of pollution (presence of sand and other impurities) and high average fuel moisture up to 65% and more, lining the boiler firebox is in a satisfactory condition.