AntonL said:
SPF4 has been boiling since March 13 or 14, the temperature measured in the furthest corner of the pool will be below boiling point. How else do you think 2.4MW of heat is being dissipated? show me one good way other than by boiling.
see
https://www.physicsforums.com/showpost.php?p=3271575&postcount=5238"
REGARDING TEMPERATURE MEASUREMENTS
Every temperature measurement of the SFP's I have seen are by IR images (maybe with laser interferometry?). Perhaps someone more knowledgeable than I can comment, but it would seem that IR images would read only the visible surface temperature, that the temperature would be somewhat averaged with the interposed air temperature, and that much of the surface of SFP remains obscured by the FHM, crane, and roof structures. If there has been insertion of any direct reading temperature probe(s) into the pools, I missed it (entirely possible).
REGARDING EXPLOSION AT 3
The initial fireball was not a fireball initially. The first visible event is ejection of a small white cloud of gas at the southeast corner of Bldg 3 which ignites into a glowing yellow-orange fireball a fraction of a second
after it has left the confines of the building. I noted this early on. To my non-expert eye, this was a factor I weighted heavily in the hypothesis of a directed, forceful blast of superheated (if that is the correct term) steam resulting from an explosion within the primary containment, coming sidewise, from the transfer chute, and blowing out the side of the upper portion of the building, with hydrogen explosion within the building and vaporization of water from the SFP following.
As for implosion, I see only shadow effect, progressing from the upper to the lower portion of Bldg 3, not implosion. It also seems to me most unlikely that a massive exothermic reaction inside of a building would begin with significant, visible implosion of the building before it visibly explodes.
As for the bird song on the live video, this must be subject to closer scrutiny. The audio track may have been heavily edited with the bird song added just to increase the impact for a live video stream.
On the other hand, the presence of a live audio track accompanying the live video feed, which apparently matches the exact location of the existing videos of the explosion at Unit 3, might give credence to the theory that the only existing audio track of the explosion at Unit 3 (of which I know), was likewise recorded "live" by the same camera and microphone, even if the audio track were then edited at a later to visually synch it with the video for TV newscast.
REGARDING THE PRESENCE OF NEW FUEL RODS IN SFP3
@anton:
When data are given for the weight of new or spent fuel rods, is it correct to presume that the weights given are for the fuel rod assemblies and not strictly the weight of the enriched or spent fuel itself? Given the density of uranium, is the weight of the zirconium and remainder of the fuel rod assembly be insignificant with regard to the total weights given? Is it conceivable that new fuel rods or fuel rod assemblies might be transferred or stored in any configuration that might allow even the remote possibility of criticality outside of the core, even in the case of an explosion with mechanical damage or thermal damage or both?
