Convection parts (boiler tubes) for Unit 1 and 4 in the Uppsala Waste incineration plant

commissioned in 2005. The waste incinerators are the base production units of district heating and steam in Uppsala. On the two older waste boilers, Unit 1 and 4, it is time to replace pressure vessel parts (convection parts) in order to continue operations until 2040. Other parts (membrane wall

s in furnace and the so-called “lattice tubes” have previously been replaced and supplemented with overlay welding. The steam data is 15 bar(g) and 200°C for both boiler. This procurement concerns replacement of the convection parts in the