The latest postponement followed the discovery of the need to refine an extendable robot arm and the so-called "dual-arm manipulator" used to attach a debris removal device to the robot arm.
The Japanese government is backing the construction of new reactors for the first time since Fukushima. It will have to convince a skeptical public first.
Yasutoshi Nishimura is also scheduled to meet with officials of Tokyo Electric Power Company Holdings, chiefs of local governments and the prefectural assembly.