Fairewinds Chief Engineer Arnie Gundersen, Nov. 19, 2013 (at 7:00 in): Modern fuel racks have boron surrounding the nuclear fuel, and the boron at Fukushima Daiich likely leached out over the last 2 years […] If the fuel gets too close to each other it can cause a chain reaction in the fuel pool.
Chris Harris, former licensed Senior Reactor Operator and engineer, Nov. 21, 2013 (at 34:45 in): You can have occur a complete criticality in the spent fuel pool. If you imagine the whole spent fuel pool boiling away at one time, a dazzling display of light, […] involvement where the fuel itself gets damaged, liberating hydrogen, getting contained inside the new building that they have, and that exploding. I almost believe that would be close to, or indistinguishable from, a nuclear explosion from a practical standpoint.
Published: November 22nd, 2013 at 11:09 am ET
- Gundersen: 200 brand new fuel bundles in Fukushima Unit 4 pool are most at risk to start nuclear chain reaction — If too close together during removal, there will be a criticality — “They have to be very, very cautious” (AUDIO) September 27, 2013
- Nuclear Engineer: Pyrophoric fire may have already occurred at Fukushima Unit 4 spent fuel pool — Explosion possibly due to rods not being covered with water (AUDIO) October 21, 2013
- Nuclear Engineer: Fuel appears damaged in Fukushima Unit 4 pool and will fall apart if they pull it up — Make sure your radiation monitor works so you know what’s going on when something drops (AUDIO) September 6, 2013
- Gundersen: They’ve admitted that all the boron has disintegrated in between spent fuel at Fukushima — It can cause a nuclear chain reaction if rods get too close together in pool (AUDIO) September 17, 2013
- 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