This ordered packing method showed that reactor core can be
divided into many regions radial and axially, which were filled
with different fuel balls. It had better power and temperature
maps, and could exceed existing PBR and PMR modular reactor
designs in terms of maximum thermal power level. The thermal
power output of this design could achieve 400 MWth. As shown
in Fig. 2, if graphite pebbles were added in central region of an
enlarged core, the reactor would be able to enhance thermal power
output to 600 MWth or more, in which the average fuel ball power
is 1.18–1.20 kW/ball, as listed in Table 1.