Delayed Station Blackout Event and Nuclear Safety

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td align="left">Basic event [delay minutes]</td><td align="center">Time to core heatup [s]</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td align="left">NRAC-PRZBV <svg height="11.9171pt" id="M16" style="vertical-align:-2.2392pt" version="1.1" viewbox="-0.0498162 -9.6779 4.79128 11.9171" width="4.79128pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.0135,0,0,-0.0135,0,0)"><path d="M290 -163V-135C183 -126 181 -122 181 -44V583C181 662 184 666 290 675V703H120V-163H290Z" id="g113-92"></path><glyph.data ascent="3473" descent="-2876" horiz-adv-x="345" vert-adv-y="345"></glyph.data></g></svg>0<svg height="11.9171pt" id="M17" style="vertical-align:-2.2392pt" version="1.1" viewbox="-0.0498162 -9.6779 4.79128 11.9171" width="4.79128pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.0135,0,0,-0.0135,0,0)"><path d="M226 -163V703H56V676C162 667 165 662 165 584V-43C165 -122 162 -126 56 -136V-163H226Z" id="g113-94"></path><glyph.data ascent="3473" descent="-2876" horiz-adv-x="345" vert-adv-y="345"></glyph.data></g></svg></td><td align="center">13620</td></tr><tr><td align="left">NRAC-PRZBV <svg height="11.9171pt" id="M18" style="vertical-align:-2.2392pt" version="1.1" viewbox="-0.0498162 -9.6779 4.79128 11.9171" width="4.79128pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.0135,0,0,-0.0135,0,0)"><path d="M290 -163V-135C183 -126 181 -122 181 -44V583C181 662 184 666 290 675V703H120V-163H290Z" id="g113-92"></path><glyph.data ascent="3473" descent="-2876" horiz-adv-x="345" vert-adv-y="345"></glyph.data></g></svg>15<svg height="11.9171pt" id="M19" style="vertical-align:-2.2392pt" version="1.1" viewbox="-0.0498162 -9.6779 4.79128 11.9171" width="4.79128pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.0135,0,0,-0.0135,0,0)"><path d="M226 -163V703H56V676C162 667 165 662 165 584V-43C165 -122 162 -126 56 -136V-163H226Z" id="g113-94"></path><glyph.data ascent="3473" descent="-2876" horiz-adv-x="345" vert-adv-y="345"></glyph.data></g></svg></td><td align="center">13980</td></tr><tr><td align="left">NRAC-PRZBV <svg height="11.9171pt" id="M20" style="vertical-align:-2.2392pt" version="1.1" viewbox="-0.0498162 -9.6779 4.79128 11.9171" width="4.79128pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.0135,0,0,-0.0135,0,0)"><path d="M290 -163V-135C183 -126 181 -122 181 -44V583C181 662 184 666 290 675V703H120V-163H290Z" id="g113-92"></path><glyph.data ascent="3473" descent="-2876" horiz-adv-x="345" vert-adv-y="345"></glyph.data></g></svg>30<svg height="11.9171pt" id="M21" style="vertical-align:-2.2392pt" version="1.1" viewbox="-0.0498162 -9.6779 4.79128 11.9171" width="4.79128pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.0135,0,0,-0.0135,0,0)"><path d="M226 -163V703H56V676C162 667 165 662 165 584V-43C165 -122 162 -126 56 -136V-163H226Z" id="g113-94"></path><glyph.data ascent="3473" descent="-2876" horiz-adv-x="345" vert-adv-y="345"></glyph.data></g></svg></td><td align="center" rowspan="3">14020</td></tr><tr><td align="left">NRAC-PRZBV <svg height="11.9171pt" id="M22" style="vertical-align:-2.2392pt" version="1.1" viewbox="-0.0498162 -9.6779 4.79128 11.9171" width="4.79128pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.0135,0,0,-0.0135,0,0)"><path d="M290 -163V-135C183 -126 181 -122 181 -44V583C181 662 184 666 290 675V703H120V-163H290Z" id="g113-92"></path><glyph.data ascent="3473" descent="-2876" horiz-adv-x="345" vert-adv-y="345"></glyph.data></g></svg>60<svg height="11.9171pt" id="M23" style="vertical-align:-2.2392pt" version="1.1" viewbox="-0.0498162 -9.6779 4.79128 11.9171" width="4.79128pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.0135,0,0,-0.0135,0,0)"><path d="M226 -163V703H56V676C162 667 165 662 165 584V-43C165 -122 162 -126 56 -136V-163H226Z" id="g113-94"></path><glyph.data ascent="3473" descent="-2876" horiz-adv-x="345" vert-adv-y="345"></glyph.data></g></svg></td></tr><tr><td align="left">NRAC-PRZBV <svg height="11.9171pt" id="M24" style="vertical-align:-2.2392pt" version="1.1" viewbox="-0.0498162 -9.6779 4.79128 11.9171" width="4.79128pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.0135,0,0,-0.0135,0,0)"><path d="M290 -163V-135C183 -126 181 -122 181 -44V583C181 662 184 666 290 675V703H120V-163H290Z" id="g113-92"></path><glyph.data ascent="3473" descent="-2876" horiz-adv-x="345" vert-adv-y="345"></glyph.data></g></svg>75<svg height="11.9171pt" id="M25" style="vertical-align:-2.2392pt" version="1.1" viewbox="-0.0498162 -9.6779 4.79128 11.9171" width="4.79128pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.0135,0,0,-0.0135,0,0)"><path d="M226 -163V703H56V676C162 667 165 662 165 584V-43C165 -122 162 -126 56 -136V-163H226Z" id="g113-94"></path><glyph.data ascent="3473" descent="-2876" horiz-adv-x="345" vert-adv-y="345"></glyph.data></g></svg></td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Time to core heatup resulting from PRZ PORV stuck open.

Science and Technology of Nuclear Installations

tab4

Table 4

Table 4: Delayed Station Blackout Event and Nuclear Safety 