In its work, the power company successively removed a concrete hatch cover, the lid of the containment vessel, the lid of the reactor pressure vessel, a steam dryer and a steam separator, confirming their safety and inspecting them for any problems.

One of the problems found was a broken bolt among the 24 bolts holding a cover protecting the pressure vessel bellows. None of the discoveries, however, were found to be affecting the soundness of the equipment or facilities.