================================================================================ Nomenclature ================================================================================ .. list-table:: :header-rows: 1 :align: center :widths: 1,4,1 * - Symbol - Description - Units * - :math:`A` - Variable or constant in TDC-2 correlation - \- * - :math:`B` - Variable or constant in TDC-2 correlation - \- * - :math:`C` - Variable or constant in TDC-2 correlation - \- * - :math:`D` - Constant in TDC-2 correlation - \- * - :math:`E` - Constant in TDC-2 correlation - \- * - :math:`F` - Constant in TDC-2 correlation - \- * - :math:`m` - Stress exponent - \- * - :math:`P` - Internal fuel element pressure - Pa * - :math:`P_{\text{ch}}` - Coolant channel pressure - Pa * - :math:`\frac{Q}{R}` - Creep activation temperature - K * - :math:`Q_{1}` - Constant in TDC-2 correlation - \- * - :math:`\dot{r}` - Penetration rate - m/s * - :math:`t_{\text{r}}` - Time to rupture in TDC-2 correlation - hrs,s * - :math:`T` - Cladding temperature - K * - :math:`\dot{T}` - Temperature rate of change - K/s * - :math:`\text{TI}` - Irradiation temperature in TDC-2 correlation - K * - :math:`\dot{\epsilon}` - Equivalent strain rate - 1/s * - :math:`{\dot{\epsilon}}_{\text{oos}}` - Material constant - 1/s * - :math:`\phi` - Variable in TDC-2 correlation - * - :math:`\sigma` - Equivalent stress - Pa * - :math:`\sigma` - Hoop stress in TDC-2 correlation - MPa * - :math:`\sigma_{\text{so}}` - Saturation stress - Pa * - :math:`\sigma_{\theta}` - Hoop stress - Pa * - :math:`\sigma^{*}` - Fitting coefficient in TDC-2 correlation - MPa * - :math:`\phi t` - Fast fluence in TDC-2 correlation - 10\ :sup:`22`\ n/cm\ :sup:`2`