CATHARE Assessment of Natural Circulation in the PKL Test Facility during Asymmetric Cooldown Transients

<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">Time [s]</td><td align="left">Measures/Events</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td align="left">0</td><td align="left">Start of Run-2. Continuous cooldown initiated: continuous cooldown at 50°C/h by SG-2 and SG-4</td></tr><tr><td align="left">80</td><td align="left">PRZ heater switched off</td></tr><tr><td align="left">2240</td><td align="left">Spraying in PRZ by volume control system switched on (positive subcooling in the SGU-tubes is maintained)</td></tr><tr><td align="left">6140</td><td align="left">Flow stagnation in loop-1</td></tr><tr><td align="left">7310</td><td align="left">End of Run-2</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Science and Technology of Nuclear Installations

tab4

Table 4

Table 4: CATHARE Assessment of Natural Circulation in the PKL Test Facility during Asymmetric Cooldown Transients 