Analyses of Instability Events in the Peach Bottom-2 BWR Using Thermal-Hydraulic and 3D Neutron Kinetic Coupled Codes Technique

<table class="table-group" id="tab6"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td align="left"> Calculation case </td><td align="center"> DR </td><td align="center"> NF (Hz) </td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td align="left">(1)
 One pump stopped for 1 s</td><td align="center">0.427</td><td align="center">0.278</td></tr><tr><td align="left">(2)
 Two pumps stopped for 1 s</td><td align="center">0.345</td><td align="center">0.280</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Science and Technology of Nuclear Installations

tab6

Table 6

Table 6: Analyses of Instability Events in the Peach Bottom-2 BWR Using Thermal-Hydraulic and 3D Neutron Kinetic Coupled Codes Technique 