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Fuel

The fuel pellets in the OPEN100 reactor core will be enriched Uranium Dioxide (3-5% U-235) pellets that use the same specification as those used throughout the US nuclear power industry. Sintered into pieces that are approximately 3/8-inch diameter and 5/8-inch long, the pellets will be assembled and sealed into 12-foot-long fuel rod assemblies composed of a Zirconium alloy. They are arrayed into a 17x17 assembly for handling and loading into the reactor vessel. Some pellets or bundles may include integral or discrete poisons for reactivity control.

 

Specifications

Fuel Pellet Material: Uranium Dioxide
Enrichment Level: 3% to 5% U-235
Rod Material: Zircaloy-4
Rod Dimensions: 3/8-Inch x 12-Feet
Assembly Array Size: 17 x 17
Number of Fuel Assemblies: 24

 

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Detailed Design Specifications

Pellet

Rod

Bundle

 

Video Explainers

Pellet

Rod

Bundle

                  is a project of the Energy Impact Center, a Washington, DC based research institute focused on climate restoration.