Image icon  TRISO nuclear fuel

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Description: This image shows INL's technical director for TRISO fuel research David Petti holding a cylinder pellet of TRISO fuel, a more efficient fuel developed at INL for high-temperature gas-cooled nuclear reactors. Tri-isotopic fuel, or TRISO fuel, is a specialized fuel intended for high-temperature gas reactors. As opposed to light water reactor fuel, TRISO fuel is a spherical particle with uranium dioxide or uranium oxycarbide at its core. The core is coated with layers of carbon and silicon carbide - the TRISO coating - which acts as "the primary containment" of fission products. The tiny particles, which measure about one millimeter in diameter, are embedded in graphite, which takes the form of a tennis ball-sized pebble or a circular cylinder depending on the reactor where it will be placed. TRISO fuel is unique, in that it can be fabricated with very few defects, survive severe accident conditions and - most importantly - achieve a burnup that goes far beyond any previous research.
Keywords: fuel • gas reactor • reactor • high temperature • uranium • graphite • tri-isotopic • TRISO • ATR • burnup • waste • image
Categories: Applications > Energy > Nuclear energy
Other topics > Sustainability
Created by: Idaho National Laboratory
Contributions: Dr David Petti, Idaho National Laboratory
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Date created: 28 May 2008
Date added: 13 April 2011
Resource ID: 3626