The Pebble Bed Modular Reactor

Review of Generation‐III/III+ Fission Reactors

“…All 450,000 spheres stay in the reactor for approximately three years, during which time they make six passes down through the core. The PBMR can achieve a fuel burnup of 93 MWd/kgHM at discharge [158].…”

“…The reactor vessel of the PBMR is large when compared with a modern PWR: the vessel of the PBMR is 28.5 m high and has a inner diameter of 6.2 m, or double the height (and 1.5 times the diameter) of the vessel of the AP1000 [158].…”