At the end of October, Kansai Electric released an interim report which argued that the crush zone was not an active fault, that traces of the F-6 fault could not be confirmed at the location of the beach survey, and the crush zone might have been shorter than they had expected.
However when a team of experts from the NRC inspected the same trench, they found evidence of displace layers that could’ve resulted from the movement of an active fault, contradicting the utilities report. Two of the NRC investigators argue that the displacement found in the trench could’ve been produced by landslides around the nuclear power plant, and not an active fault.
The location and shape of the fault will need to be examined in detail at various spots before drawing a final conclusion.
Source: The Daily Yomiuri