A Conceptual Approach to Eliminate Bypass Release of Fission Products by In-Containment Relief Valve under SGTR Accident

<table class="fixed-width table-group" id="tab2"><tr><td><table class="table"><colgroup><col style="width:8.75em"/><col style="width:7.18em"/></colgroup><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Accident sequence</td><td class="align_center">SGTR base (s)</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Accident start</td><td class="align_center">0</td></tr><tr><td class="align_left">MFW trip</td><td class="align_center">2,654 (0.74 h)</td></tr><tr><td class="align_left">Reactor trip</td><td class="align_center">2,654 (0.74 h)</td></tr><tr><td class="align_left">MSSV open</td><td class="align_center">2,654 (0.74 h)</td></tr><tr><td class="align_left">RCP trip</td><td class="align_center">2,672 (0.74 h)</td></tr><tr><td class="align_left">Oxidation start</td><td class="align_center">12,437 (3.45 h)</td></tr><tr><td class="align_left">Gap release</td><td class="align_center">12,644 (3.51 h)</td></tr><tr><td class="align_left">Cladding melting</td><td class="align_center">13,872 (3.85 h)</td></tr><tr><td class="align_left">Melt relocation</td><td class="align_center">14,328 (3.98 h)</td></tr><tr><td class="align_left">RPV failure</td><td class="align_center">21,406 (5.94 h)</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Accident sequences in the base case.</div>

Science and Technology of Nuclear Installations

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Table 2

Table 2: A Conceptual Approach to Eliminate Bypass Release of Fission Products by In-Containment Relief Valve under SGTR Accident 