Phenix was not industrial (250 MWe) but a research reactor. Superphenix was an attempt to haul it to industrial scale and it failed to do so, just as every other similar project.
Russia BN-600 is obsolete and was so leaky (sodium!) is isn't even funny. It was superseded by the BN-800 which started in 2014 and has various problems (most related to fuel, the core of this challenge). This path is officially paused (a planned BN-1200 project didn't start). If it works satisfactorily, as you implicitly claim, please state why it isn't declined (other units built) while Russia tries another breeder architecture (BREST-300, using lead instead of sodium)?
phenix and superphenix were closed mainly for political reasons, not because these didn't deliver|
"This path is officially paused" - meaning the reactor is closed?
> phenix and superphenix were closed mainly for political reasons
Phénix is not pertinent, it worked perfectly but was a research reactor (small, expensive...).
Superphenix never reached the industrial stage, even the enterprise exploiting it (NERSA) never said so. They simply declared that they were willing to continue and hoping to reach the goal (13 years after first reactor divergence, 24 years after project start, with gigantic amounts of money poured at the project).
Russia BN-600 is obsolete and was so leaky (sodium!) is isn't even funny. It was superseded by the BN-800 which started in 2014 and has various problems (most related to fuel, the core of this challenge). This path is officially paused (a planned BN-1200 project didn't start). If it works satisfactorily, as you implicitly claim, please state why it isn't declined (other units built) while Russia tries another breeder architecture (BREST-300, using lead instead of sodium)?
India is even farther away, encountering major difficulties with a prototype ( https://en.wikipedia.org/wiki/Prototype_Fast_Breeder_Reactor ).
China is also exploring ( https://en.wikipedia.org/wiki/CFR-600 )
Nothing industrial and ready-to-deploy, as I wrote it.