IIRC most issues were caused by problems and delays with fuel fabrication, mentioned in my post. And changes in fuel fabrication is one of the main reasons for

IIRC most issues were caused by problems and delays with fuel fabrication, mentioned in my post. And changes in fuel fabrication is one of the main reasons for postponing BN-1200 construction (i.e. it does not make sense to build a reactor, while fuel production line is not ready).