‘Nuclear Fuel in a Reactor Accident’ — Peter Burns, Rodney Ewing, Alexandra Navrotsky, 2012: […] The long-lived fission products and transuranium elements [Plutonium, etc.] within damaged fuel remain a concern for millennia. […] [Conditions after a nuclear accident] are often unanticipated […] the movement and redistribution of fuel and moderators create the added concern of continued or sporadic criticality […] years may pass before remotely controlled instruments can reveal the final condition and configuration of the fuel. […]
AAAS Science Podcast Interview with Peter Burns: In terms of the damaged fuel […] what has not really been studied is the longer-term fate of that material [after] everything has melted into a big blob. We know very little […] about how water, or even just the air will interact with that over time. […] We need to take very seriously the development of knowledge about how […] melted nuclear fuel moves in a reactor containment vessel [...] >> Full interview available here
NHK World, May 21, 2014 (at 2:00 in):
- NHK: Engineers face their hardest challenge at the nuclear plant, they have to deal with the inside of the reactor containment vessels. […] The cleanup process will not be complete until all of the debris is removed.
- Naohiro Masuda, Tepco Decommissioning Chief: We certainly have a difficult path ahead. I think we’ll be able to move forward if we can find out where the debris is and what the current conditions are.
Published: June 4th, 2014 at 7:53 am ET
- Nuclear Industry Report: ‘Reduced stability’ of fuel pool in Fukushima Unit 4; Admits there’s damaged fuel inside? — Gundersen: Fuel racks moved and damaged; Fallen debris distorted tops (AUDIO) September 27, 2013
- CBS: Tepco says fuel removal even worse than Gundersen’s analogy — It’s like pulling ‘lit’ cigarettes from a crushed pack — Going to get far more difficult in future (VIDEO) January 27, 2014
- Japan TV ‘News Flash’: Officials fear melted reactor fuel is now exposed at Fukushima — Tepco: We don’t know at this point if fuel is uncovered — Large drop in water level — Experts ‘struggling’ to find condition of nuclear cores, nothing is known for all 3 reactors (VIDEO) June 10, 2014
- Gundersen: New report shows 50 tons of rubble fell in Unit 3 pool, spent fuel is ‘highly damaged’ — Equal to loaded 18-wheeler falling from sky after supersonic explosive shockwave — “Like a knights lance, [mast] fell straight into fuel” (VIDEO) February 13, 2014
- VIDEO: Wreckage crashes into nuclear fuel rods at Fukushima Unit 3 — Officials not reporting if damaged, but “will continue monitoring regularly” — Cooling in pool interrupted September 2, 2014