TEPCO is planning another press tour of Fukushima Daiichi and has released another hand out claiming it explains the status of unit 4.
While the hand out has more information than some of their other public statements on unit 4 it is still lacking. As TEPCO slowly releases small bits of information it becomes clear they are holding back information from the public. In the report TEPCO admits they have done survey work on the building. TEPCO frames it as being only work to see if the building is tilted as a whole. No actual data is included. More involved survey work would be needed to begin adding the fuel removal building. There is clearly considerable data on the building in TEPCO (or their contractors) possession. They need to release it to the public.
The hand out also discusses cracks in the building. It claims any crack over 1mm on visual inspection would be further investigated for rebar corrosion. TEPCO still refuses to make any statements about the status or even existence of the long diagonal crack in the facade of unit 4. If the crack can be seen running across the entire facade from very far away it obviously meets TEPCO’s standard for evaluation. Since the crack runs across multiple floors and support structures it would need investigation as to the movement that created the crack and any resulting damage.
TEPCO claims non destructive concrete testing has been going on. Yet again no data is given to the public on this. TEPCO does manage to make a hand out with lots of simplistic drawings in it but little actual data. Much of it is repeats of previous claims. TEPCO is inviting the press to tour unit 4. It appears they will take them up on the refueling floor. This misses the mark again. Allowing the media up on the reactor deck doesn’t stand in for the data TEPCO refuses to make public. One of the TEPCO workers also mentions that unit 4 isn’t the only thing to worry about. Other units have damage and could be at risk in a severe quake too.
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