Assessment of Neutronic Characteristics of Accident-Tolerant Fuel and Claddings for CANDU Reactors

Table 4

CANDU lattice properties.

Element	Property	Units	Value				Comment
Fuel	Temperature	K	941.29
	Diameter	cm	1.2244
Cladding	Temperature	K	560.66
	OD	cm	1.308
Fuel bundle	Type		37-element
	Number of pins		1	6	12	18
	Ring radii	cm	0	1.5	2.9	4.35
	Ring pitches	°	0	0	15	0
Coolant	Composition		D2O				99.2% purity
	Density	g/cm^3	0.81212
	Temperature	K	560.66
Pressure tube	Composition		Zr-Nb Alloy				97.5 wt% Zr; 2.5 wt% Nb
	Density	g/cm^3	6.57
	Temperature	K	560.66
	ID	cm	10.3378
	OD	cm	11.2064
Gas Gap	Composition		CO2
	Density	g/cm^3	0.002297
	Temperature	K	345.66
Calandria tube	Composition		Zr Alloy				97.24 wt% Zr; 1.6 wt% Fe; 1.1 wt% Cr; 0.06 wt% Ni
	Density	g/cm^3	6.44
	Temperature	K	345.66
	ID	cm	12.8956
	OD	cm	13.1750
Moderator	Composition		D2O				99.91% purity
	Density	g/cm^3	1.082885
	Temperature	K	345.66
Lattice pitch		cm	28.575

Outer diameter. Inner diameter.