Data-Driven and Precursor-Group Uncertainty Propagation of Lattice Kinetic Parameters in UAM Benchmark

<figure class="figure-group responsive"><div class="sub-figure" id="a"><object data="https://static.hindawi.com/articles/stni/volume-2019/3702014/figures/3702014.fig.004a.svgz" name="3702014.fig.004a" type="image/svg+xml"></object><div class="fig-label">(a) Data effect</div></div><div class="sub-figure" id="b"><object data="https://static.hindawi.com/articles/stni/volume-2019/3702014/figures/3702014.fig.004b.svgz" name="3702014.fig.004b" type="image/svg+xml"></object><div class="fig-label">(b) Fuel content effect</div></div><div class="sub-figure" id="c"><object data="https://static.hindawi.com/articles/stni/volume-2019/3702014/figures/3702014.fig.004c.svgz" name="3702014.fig.004c" type="image/svg+xml"></object><div class="fig-label">(c) Void fraction effect</div></div><div class="sub-figure" id="d"><object data="https://static.hindawi.com/articles/stni/volume-2019/3702014/figures/3702014.fig.004d.svgz" name="3702014.fig.004d" type="image/svg+xml"></object><div class="fig-label">(d) Neutron absorber effect</div></div></figure>

<p>Precursor-group-wise DNF (<span class="nowrap"><svg height="12.7178pt" id="M525" style="vertical-align:-3.42947pt" version="1.1" viewbox="-0.0498162 -9.28833 10.4104 12.7178" width="10.4104pt" xmlns="http://www.w3.org/2000/svg"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M558 587C558 666 497 712 432 712C379 712 330 691 284 650C212 586 178 508 148 348L71 -65C49 -185 35 -229 23 -235L27 -261C49 -259 101 -251 124 -224C131 -216 138 -178 159 -24C171 66 197 200 227 356C264 550 295 668 393 668C443 668 479 632 479 575C479 516 446 458 383 418C361 404 344 398 318 397L296 350C395 338 460 281 460 192C460 110 411 40 300 40C258 40 215 55 192 69L181 51C191 18 222 -16 266 -16C308 -16 351 1 397 26C471 67 545 142 545 221C545 315 486 365 401 395C469 437 558 498 558 587Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,7.228,3.132)"><path d="M250 606C250 634 233 656 203 656C168 656 146 618 146 593C146 564 169 545 192 545C227 545 250 573 250 606ZM227 95L212 119C187 98 152 71 135 71C129 71 128 78 134 102L207 373C219 418 217 451 194 451C165 451 92 411 30 351L44 326C77 353 106 371 114 371C124 371 121 357 117 341L55 97C32 5 46 -12 70 -12C108 -12 191 51 227 95Z"></path></g></svg>)</span> relative uncertainty (in %) for various sensitivity cases at BOL: (a) data source (PWR pin-cell), (b) initial fuel content (PWR pin-cell), (c) void fraction (BWR lattice), and (d) neutron absorber (PWR lattice).</p>

Science and Technology of Nuclear Installations

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Figure 4

Figure 4: Data-Driven and Precursor-Group Uncertainty Propagation of Lattice Kinetic Parameters in UAM Benchmark 