Japan's Fast Breeder Reactor Research and Development Center
![A view of the Monju fast breeder reactor facility in Tsuruga, Fukui Pref., Japan. (Steve Herman/VOA)](https://gdb.voanews.com/6080937F-FB68-46ED-BBF1-654947FA5D83_w1024_q10_s.jpg)
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A view of the Monju fast breeder reactor facility in Tsuruga, Fukui Pref., Japan. (Steve Herman/VOA)
![The primary and secondary cooling systems each contain 760 tons of sodium. (Steve Herman/VOA)](https://gdb.voanews.com/0E3481F5-AF11-456E-9D23-D7B2A9A4DD5B_w1024_q10_s.jpg)
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The primary and secondary cooling systems each contain 760 tons of sodium. (Steve Herman/VOA)
![The primary and secondary cooling systems each contain 760 tons of sodium. (Steve Herman/VOA)](https://gdb.voanews.com/D0CACF14-CE5B-4E88-9170-3C48DAFC4C9A_w1024_q10_s.jpg)
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The primary and secondary cooling systems each contain 760 tons of sodium. (Steve Herman/VOA)
![A control rod drive mechanism inside Monju. (Steve Herman/VOA)](https://gdb.voanews.com/14CC17CE-1A0C-4011-9EB8-353FEBC8CA44_w1024_q10_s.jpg)
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A control rod drive mechanism inside Monju. (Steve Herman/VOA)