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THORIUM AS AN ENERGY SOURCE - Opportunities for Norway ...

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Thorium as an Energy Source - <strong>Opportunities</strong> <strong>for</strong> <strong>Norway</strong><br />

U-235 uranium-235 ( 235 U), fissile isotope of uranium (0.7 wt% in natural uranium)<br />

U-236 uranium-236 ( 236 U)<br />

U-238 uranium-238 ( 238 U)<br />

U3O8 Triuranium octaoxide (Yellow cake) (directly from the uranium mines)<br />

(An oxide <strong>for</strong>m of uranium that is the most common chemical <strong>for</strong>m) found in nature.<br />

UC2 uranium carbide<br />

UCO uranium oxycarbide<br />

UF6 Uranium hexafluoride (a compound used in the uranium enrichment process)<br />

UiB University of Bergen, <strong>Norway</strong><br />

UiO University of Oslo, <strong>Norway</strong><br />

UMB Norwegian University of Life Sciences at Ås, <strong>Norway</strong><br />

UNENE University Network of Excellence in Nuclear Engineering<br />

UNFCCC United Nations Framework Convention on Climate Change<br />

UNIK University studies at Kjeller<br />

UO2 uranium dioxide<br />

UOIT University of Ontario Institute of Technology, Canada<br />

USGS The US Geological Survey<br />

VHTR Very-High-Temperature Reactor (Generation IV concept)<br />

VVER Russian version of the Pressurized Water Reactor (PWR)<br />

WNU World Nuclear University<br />

WNUCC WNU Coordinating Centre in London<br />

wt% weight percent<br />

Xe-135 xenon-135 ( 135 Xe)<br />

Y yttrium<br />

zircon zirconium silicate (ZrSiO4)<br />

Zr zirconium<br />

βeff delayed neutron fraction<br />

$ reactivity unit, 1$ is the reactivity insertion that will make a critical reactor prompt critical<br />

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