Table 2

Advanced reactor design specifications.

Design Criteria USNC MMR [8] X-Energy Xe-100 [11,12]
Reactor type Modular HTGR Modular HTGR
Power Output (MWe) 10 75
Enrichment (% 235U) 13 15.5
Cycle Length (years) 20 online refueling
Fuel form TRISO compacts TRISO pebbles
Reactor Lifetime (yrs) 20 60
Mass of uranium per refueling (kg) 1912.9 223.87
Burnup (MWd/kg U) 42.7 163

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