I am corrected. Operated just D-rich enough to breed its own 3He (plus tritium, presumably for sale), the material damage, waste heat, and radioactivation from

I am corrected. Operated just D-rich enough to breed its own 3He (plus tritium, presumably for sale), the material damage, waste heat, and radioactivation from neutron flux produced by the D-D side reactions are much more manageable than for a plant relying on capturing those neutrons for their heat. The waste heat from a 2 MW plant, ~200 kW, would not be negligible, but capturing and handling 200 kW in warm (guessing?) lithium-deuteride saturated heavy water is different in kind from extracting 20 GW (probably the minimum size of a the D-T plant) from thousands of tons of molten metal.