> we can agree to disagree on what "industrial" means. I think that the BN-800 reactor is an industrial reactor, just not a very good one.

Fair enough. IMHO 'industrial' here (power-producing equipment) means "ready for large-scale deployment".

BREST: I didn't know, thank you! The path seems even longer than I thought.

Small steps: indeed, and those small steps pace has to be bumped up if Gen4-proponents really hope to survive the renewables wave.