Corrections and adjustments can be made via computer commands. The system is worker-friendly in that corrective functions are suggested by the computer on the screen. The plant is protected from every possible known and projected nuclear event by duplicating safety systems. The process is called dual processor hot stand-by system. If something goes wrong in a given section, there is an independent back up to fall back upon.
Any anomaly now has an electronic record that can be stored, accessed and reviewed.
There are five barriers before radioactivity from the reactor core can reach the environment in case of a nuclear event including the double-containment dome. The fuellingrobots go to the exact location specified by the controlling operator to one of 306 channels. They open the shielding and the seal plug, insert and receive fuel bundles while the reactor is in operation. All this is done by commands issued from the control room. Kaiga-II has been expensive in its coming.