chapter  31
14 Pages

Material Science and Metallurgy

The core of a sodium-cooled fast reactor (SFR) comprises ceramic oxide/carbide/metal fuel pellets stacked in thin-walled tubes and loaded into a long hexagonal duct to form the fuel bundle that is immersed in a pool of liquid sodium (Figure 31.1). The heat transport system consists of a primary sodium circuit, secondary sodium circuit, and steam-water system (see Chapter 8 for details).