## 4 Structural Analysis of the Reference COB Segment
### Results
\begin{table}
\begin{tabular}{c c c c c} \hline \hline  & **NO** & **OP** & **UVDE** & **UVDE** \\  & & & **(t = 11.52 s)** & **(t = 11.585 s)** \\ \hline Ur, max [mm] & 40.3461 & 40.5314 & 37.9137 & 40.3827 \\ Ur, min [mm] & \(-9.71531\) & \(-9.59273\) & \(-9.58886\) & \(-9.56706\) \\ Ut, max [mm] & \(5.46014\) & \(5.59649\) & \(6.19565\) & \(7.99158\) \\ Ut, min [mm] & \(-5.0945\) & \(-4.82734\) & \(-5.11112\) & \(-12.4684\) \\ Up, max [mm] & 23.7326 & 23.5357 & 23.9653 & 23.9025 \\ Up, min [mm] & \(-5.01018\) & \(-5.88849\) & \(-4.63463\) & \(-5.45198\) \\ \hline \hline \end{tabular}
\end{table} 
Table 5: Maximum and minimum displacements values obtained. the criteria for the immediate plastic flow localization, namely the (P\({}_{m}+Q_{m}\))/S\({}_{em}\), unlike the path within the central poloidal-radial SP, which, due to its lower average temperature, verified this criterion in every operating scenario and at every segment height considered. Moreover, the path SPh1, located in the central part of a horizontal SP in the upper region, also did not fulfil the IPFL criterion, taking into account the secondary stresses. Globally, average temperatures were higher in the regions in which the criterion for the Immediate Plastic Flow Localization was not fulfilled, as reported in tables. Therefore, high temperatures, together with the action of the selected attachment system, could contribute to the failure of the RCC-MRx criteria verification. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline  & \multicolumn{4}{c}{**Normal Operation**} \\ \hline  & **Tave [\({}^{\circ}\)C]** & **Pm/Sm** & **Pb/(Keff-Sm)** & **(Pm +** & **(Pm + Pb +** \\  & & **Pb)/(Keff-Sm)** & **Qm)/Sem** & **Q + F)/Set** \\ \hline SPv1,mid & 346.0 & 0.388 & 0.259 & 0.651 & 0.156 \\ SPv2,mid & 519.3 & 0.505 & 0.337 & 2.066 & 0.291 \\ SPh1,mid & 435.6 & 0.178 & 0.120 & 0.577 & 0.104 \\ SPh2,mid & 473.0 & 0.174 & 0.124 & 0.726 & 0.119 \\ SPv1,top & 325.4 & 0.452 & 0.302 & 0.328 & 0.078 \\ SPv2,top & 462.6 & 0.595 & 0.398 & 1.300 & 0.218 \\ SPh1,top & 400.6 & 0.084 & 0.067 & 1.029 & 0.216 \\ SPh2,top & 458.8 & 0.222 & 0.177 & 0.792 & 0.130 \\ SPv1,bot & 339.2 & 0.050 & 0.033 & 0.229 & 0.055 \\ SPv2,bot & 503.7 & 0.069 & 0.048 & 1.461 & 0.216 \\ SPh1,bot & 430.0 & 0.094 & 0.088 & 0.794 & 0.163 \\ SPh2,bot & 478.1 & 0.083 & 0.058 & 0.884 & 0.147 \\ \hline \hline \end{tabular}
\end{table} 
Table 6: Verification of RCC-MRx criteria under NO loading scenario. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline  & \multicolumn{4}{c}{**Over-Pressurization**} \\ \hline  & **Tave [\({}^{\circ}\)C]** & **Pm/Sm** & **Pb/(Keff-Sm)** & **(Pm +** & **(Pm + Pb +** \\  & & & **Pb)/(Keff-Sm)** & **Qm)/Sem** & **Q + F)/Set** \\ \hline SPv1,mid & 346.0 & 0.342 & 0.228 & 0.383 & 0.110 \\ SPv2,mid & 519.3 & 0.401 & 0.268 & 1.217 & 0.166 \\ SPh1,mid & 435.6 & 0.832 & 0.559 & 0.675 & 0.125 \\ SPh2,mid & 473.0 & 0.712 & 0.482 & 0.632 & 0.103 \\ SPv1,top & 325.4 & 0.214 & 0.142 & 0.312 & 0.089 \\ SPv2,top & 462.6 & 0.201 & 0.136 & 0.624 & 0.105 \\ SPh1,top & 400.6 & 0.725 & 0.486 & 0.957 & 0.213 \\ SPh2,top & 458.8 & 0.612 & 0.409 & 0.649 & 0.103 \\ SPv1,bot & 339.2 & 0.263 & 0.175 & 0.254 & 0.073 \\ SPv2,bot & 503.7 & 0.242 & 0.161 & 0.822 & 0.118 \\ SPh1,bot & 430.0 & 0.756 & 0.517 & 0.788 & 0.160 \\ SPh2,bot & 478.1 & 0.660 & 0.441 & 0.693 & 0.113 \\ \hline \hline \end{tabular}
\end{table} 
Table 7: Verification of RCC-MRx criteria under OP loading scenario.