CHF Enhancement of Advanced 37-Element Fuel Bundles

Table 1

Geometries of the modifications of standard 37-element fuel.

Pitch circle identification	Pitch circle radius, mm		Element diameter		Number of elements
	37S fuel	Mod. pitch	37S fuel	Mod. diam.
Center	0	0	13.08	11.50	1
Inner	14.88	14.88~15.38	13.08	13.08	6
Middle	28.75	28.75	13.08	13.08	12
Outer	43.33	43.33	13.08	13.08	18