Radionuclide Transport in Fractured Rock: Numerical Assessment for High Level Waste Repository

<table>Concentration profiles in extruded bentonite region, for nuclides of <svg height="11.075" id="M133" style="vertical-align:-0.10033pt" version="1.1" viewbox="0 0 16.8125 11.075" width="16.8125" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,10.8)"><path d="M456 178h-96v-72q0 -51 12.5 -62.5t72.5 -16.5v-27h-256v27q65 5 78 17t13 62v72h-260v28q182 271 300 426h40v-407h96v-47zM280 225v295h-2q-107 -148 -196 -295h198z" id="x34"></path></g><g transform="matrix(.017,-0,0,-.017,8.222,10.8)"><path d="M495 86q-46 -47 -87 -72.5t-63 -25.5q-43 0 -16 107l49 210q7 34 8 50.5t-3 21t-13 4.5q-35 0 -109.5 -72.5t-115.5 -140.5q-21 -75 -38 -159q-50 -10 -76 -21l-6 8l84 340q8 35 -4 35q-17 0 -67 -46l-15 26q44 44 85.5 70.5t64.5 26.5q35 0 10 -103l-24 -98h2
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</svg> chain (Pu<sup>240</sup>→U<sup>236</sup>) for 10<sup>2</sup>, 10<sup>3</sup>, 10<sup>4</sup>, and 10<sup>5</sup> years.</table>

Science and Technology of Nuclear Installations

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Figure 7

Figure 7: Radionuclide Transport in Fractured Rock: Numerical Assessment for High Level Waste Repository 