[p_l]

The two large scale events involved a) known problematic design with a lot bad process (Chernobyl, the RBMK, and especially the condition into which the overall system was put before start of the event, would have failed a safety inspection under then-current Soviet rules) b) a plant where owners ignored multiple reports about dangers of tsunami capable of overcoming the defenses, and ultimately failed to contain due to loss of power to run the pumps (especially since all reactors scammed in the area). Again, failing requirements to keep running safely.

[goguy]

That's the problem though isn't it. Reliance on humans.

[giantg2]

Which is not a problem in designs that incorporate passive safety (FAST, slow wave).

[p_l]

Or already tested out (including in an accident) SVBR design... unfortunately, other than the geopolitical issues, it is partially locked by low supply of bismuth (it has a variant without bismuth, but it's not without downsides, iirc)

[giantg2]

Yeah, SVBR is a FAST reactor.