Most of the photos I’ve seen but it’s been a while since I’ve read about this, were taken by robot. It would be interesting to know if humans are going in there now.
There was another news article posted which indicated they had gotten people into the facility, to evaluate the piping for their plan to restore cooling to the spent fuel pool.
The piping was more severely damaged then they had expected, and so they are having to make a new plan which includes installing new plumbing. They had hoped to start this next month, but with the additional damage I haven’t seen a new schedule yet.
Of course, I kind of figure the reason the radiation is low enough to get into that building is that between all the water injection they are doing, and the rain they have had the past couple of months, all the particulate matter has been washed into the ground and groundwater. So it’s a “good-news, bad-news” type of thing.
That of course is just speculation on my part, but I presume that when the place exploded, some particulate matter from the fuel rods was displaced, just like in the building 3 spent fuel pool/hydrogen gas explosion.
I think there was another report that said they are finding someone significant strontium readings on the facility grounds; this was separate from the minute readings they were getting from the surrounding areas, but consistent with the disintegration of some fuel rod material. Again a bit of speculation on my part.