9.8.8.5. Nomenclature

Symbol	Description	Units
$A$	Variable or constant in TDC-2 correlation	-
$B$	Variable or constant in TDC-2 correlation	-
$C$	Variable or constant in TDC-2 correlation	-
$D$	Constant in TDC-2 correlation	-
$E$	Constant in TDC-2 correlation	-
$F$	Constant in TDC-2 correlation	-
$m$	Stress exponent	-
$P$	Internal fuel element pressure	Pa
$P_{\text{ch}}$	Coolant channel pressure	Pa
$\frac{Q}{R}$	Creep activation temperature	K
$Q_{1}$	Constant in TDC-2 correlation	-
$\dot{r}$	Penetration rate	m/s
$t_{\text{r}}$	Time to rupture in TDC-2 correlation	hrs,s
$T$	Cladding temperature	K
$\dot{T}$	Temperature rate of change	K/s
$\text{TI}$	Irradiation temperature in TDC-2 correlation	K
$\dot{\epsilon}$	Equivalent strain rate	1/s
${\dot{\epsilon}}_{\text{oos}}$	Material constant	1/s
$\phi$	Variable in TDC-2 correlation
$\sigma$	Equivalent stress	Pa
$\sigma$	Hoop stress in TDC-2 correlation	MPa
$\sigma_{\text{so}}$	Saturation stress	Pa
$\sigma_{\theta}$	Hoop stress	Pa
$\sigma^{*}$	Fitting coefficient in TDC-2 correlation	MPa
$\phi t$	Fast fluence in TDC-2 correlation	1022n/cm2