Physical Analysis of the Initial Core and Running-In Phase for Pebble-Bed Reactor HTR-PM

Table 2

The key physical parameters of typical volume fractions of fuel spheres in the initial core.

Volume fraction of fuel spheres	Fuel enrichment needed (%)	Maximum power per fuel sphere (kW/FS)	Maximum fuel temperature (°C)
1/15	21.30	16.39	3401
5/15	5.10	3.30	1093
10/15	3.45	1.66	978
14/15	3.10	1.18	951