Recent content by MadderDoc

Well, observations just does not seem consistent with a theory, that implies dripping only somewhere in the "middle". The widely accepted theory likely also did not predict that it would be possible to find identifiable CR guide tubes ejected from the RPV, in the space underneath it. So the...

They were at the time injecting water into the RPV through the CS or FDW lines at a rate of 70 m3/day. That is just about 0.8 liter/s [~0.2 gallons/s]. That could be it :-)

The droplets are falling from the wet surface of the robot once it is retracted from the water.

I would think it unlikely, that the robot managed to come by detecting and locating every center of disturbance there may in fact be of the water surface. However, it would be expected that the water coming out from the broken RPV bottom would come out rather through a number of prefererential...

That is the video "170724_02j.mp4". http://www.tepco.co.jp/tepconews/library/archive-j.html?video_uuid=ji55t6eq&catid=61699 Yes, that is true, however the water surface we see in that video segment, from about 02:06, is outside the piedestal area, meaning it is not being disturbed by water...

The fact that the water surface is disturbed is revealed when light from the robot happens to hit the disturbed surface from below, to be reflected in it, in angles such as to be registered back at the camera of the robot. Of course the water surface is not disturbed only in those locations...

Yes the concrete shield plugs in unit 1 are in severe disarray. Here is a link that may be used as an entry to the subject, and to the original handouts about the observations: http://www.fukuleaks.org/web/?p=16279

It is one of 'bonus'- samples that came out of the tests they did way back in July 2013, probing the soundness of the TIP lines of Unit 2. They didn't manage to get any of the probes past the TIP indexers. (That is about 8-10 meters in from the PCV wall). When the probes were withdrawn, some...

The water level measuring system at the plant was not very advanced, and could not cope well with elevated temperature, and evaporation from the reference leg under these accident conditions. There was no way of correction for loss of water from the reference leg, meaning the readout values for...

Besides those two dominant blow out routes, there are several other lesser release points from the area of the top shield plugs, along their outer perifery, up between the broken slabs and along cracks in them. Pressure will out.

It is ~the max design pressure for the drywell. It is absolutely not built to operate at that pressure. I think it is rebar from a concrete layer in the original upper roof construction. Quite a lot of a section of that appears to have crashed and remained as debris on the top of unit 3...

Yes, you mentioned that earlier. What is the significance of this observation, as you see it, I mean what does it tell?

Well, during that period, while the water level indicators went wildly up and downscale. the PCV pressure about doubled, until at the time of the explosion, it abruptly fell back. From basic physics, the pressure p inside the system during that period would have been directly proportional with...

Interesting thoughts. By vertical shart (singular), I would understand what is encircled in blue in image of the cleared unit 3 top below. What other exits do you have in mind (vertical shafts plural) involved in the creating of an upward thrust? Also, you say those exits encircled in red are...

The observed exit paths around the shield plugs would seem irrelevant to that purpose. Even in original state and lay out, the shield plugs will allow passage of hydrogen further into the secondary containment, once hydrogen is provided an exit path from the top of the primary containment and...