The RAPTA-5.2: Code for Modeling of VVER Type Fuel Rod - IAEA
The RAPTA-5.2: Code for Modeling of VVER Type Fuel Rod - IAEA
The RAPTA-5.2: Code for Modeling of VVER Type Fuel Rod - IAEA
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Technical meeting on fuel behaviour and modelling under severe transient and LOCA conditions<br />
October 18 – 21, 2011, Mito-city Ibaraki-ken, Japan<br />
<strong>RAPTA</strong>-<strong>5.2</strong> simulates the following processes:<br />
• Heat distribution from sources in the fuel to the<br />
clad outer surface;<br />
• <strong>The</strong>rmoelastic de<strong>for</strong>mation <strong>of</strong> fuel, additional<br />
swelling and gas release depending on<br />
temperature rise;<br />
• <strong>The</strong>rmoelastic-plastic de<strong>for</strong>mation <strong>of</strong> the cladding<br />
under external coolant pressure, inner gas<br />
pressure and mechanical interaction with fuel<br />
pellet (PCMI);<br />
• Cladding oxidation taking heat release into<br />
account;<br />
• Inner gas pressure;<br />
• Cladding failure during ballooning.
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