258
Appendix A2: 235 U-Fueled and Pb–Bi–Zoned ADS Core
Polyethylene (PE)
(19.25”)
Unit cell
(1/4”)
1/8”PE
1/16” EU 2
(1/8”)
Polyethylene (PE)
(596.90 mm)
20 mm Al plate
1/4“PE+19“PE (19.25“)
1/2”PE 9+19”PE
(23.5”)
Reflector 20.04”
(Lower)
Fuel 15”
(Unit cell 60 times)
Reflector 24.96”
(Upper)
Void (1.46“)
Fig. A2.2 Fall sideway view of “F” (1/8 P60EUEU) fuel assembly (Ref. [1])