Chemical Forms of Important Fission Products in Primary Circuit of HTR-PM under Conditions of Normal Operation and Overpressure and Water Ingress Accidents: A Study with a Chemical Thermodynamics Approach

<table class="fixed-width table-group" id="tab4"><tr><td><table class="table"><colgroup><col style="width:11.54em"/><col style="width:7.46em"/></colgroup><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Time into the accident(h)</td><td class="align_center">Pressure (MPa)</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">0</td><td class="align_center">7.0</td></tr><tr><td class="align_left" colspan="2"><hr/></td></tr><tr><td class="align_left">8</td><td class="align_center">7.7</td></tr><tr><td class="align_left" colspan="2"><hr/></td></tr><tr><td class="align_left">23 (safety valve opens)</td><td class="align_center">7.9</td></tr><tr><td class="align_left" colspan="2"><hr/></td></tr><tr><td class="align_left">24 (safety valve closes)</td><td class="align_center">6.9</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Variation in pressure during a water ingress accident.</div>

Science and Technology of Nuclear Installations

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Table 4

Table 4: Chemical Forms of Important Fission Products in Primary Circuit of HTR-PM under Conditions of Normal Operation and Overpressure and Water Ingress Accidents: A Study with a Chemical Thermodynamics Approach 

Table 4 | Chemical Forms of Important Fission Products in Primary Circuit of HTR-PM under Conditions of Normal Operation and Overpressure and Water Ingress Accidents: A Study with a Chemical Thermodynamics Approach 