Watch A Live Update By Former GE Nuclear Expert Margaret Harding On Fukushima: Timeline, Facts and Implications for Nuclear Power

Tyler Durden's picture

Margaret Harding of Iowa State University is currently conducting a lecture on the latest developments at Fukushima. She has thirty years of experience in the nuclear industry. She was Vice
President of Engineering Quality at GE Nuclear Energy and is now a
consultant to the nuclear power industry. She serves on Iowa State's
Engineering College Industrial Advisory Council and has an undergraduate
degree from Iowa State. This is a live lecture. There will likely be a very strong pro-industry bias in the presentation, but at least she might have some additional facts.

For those who wish to catch up on missed data, can do so by following the American Nuclear Society's recap tweets here.



American Nuclear Soc

Harding - sea water cooling stopped, fresh water started to halt corrosion of metal in reactors
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American Nuclear Soc

Harding - fuel that was damaged is coated with boron which stops fission
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American Nuclear Soc

Harding - standing water level in units 1,
2, 3 is about one-third to two-thirds of normal levels, fuel is damaged
above the waer line
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American Nuclear Soc

Harding - 25 rem has some statistical risk of cancer, but radiation poisoning starts at 100 rem
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American Nuclear Soc

Harding - 19 workers to date have had exposures over 10 rem, US limit is 5 rem, cancer risk unclear
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American Nuclear Soc

Harding - so far 23 workers injured at in non-radiation related incidents
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American Nuclear Soc

Harding - "smoke" was really steam from warm water hitting 34 F outside atmosphere
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American Nuclear Soc

Harding - fire trucks are great emergency pumpers that put water back in spent fuel pool at unit 4
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American Nuclear Soc

Harding - uncovering spent fuel rods produced huge releases of radioactive iodine, cesium. Needed to get water back in pool fast
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American Nuclear Soc

Harding - use of helicopters well understood as part of emergency plan, not to fill pool, but remove radiation releases
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American Nuclear Soc

Harding - use of helicopters to drop water
scrubs isotopes out of the air being released by spent fuel rods
uncovered from loss of water
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American Nuclear Soc

Harding - spent fuel pool at has 1 1/2 inch steel liner with no drains - still intact - but water lost too fast
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American Nuclear Soc

Harding - water helps cool the fuel which is hot even though it isn't in the reactor anymore
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American Nuclear Soc

Harding - depth of the water in a spent fuel pool shields you from radiation
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American Nuclear Soc

Harding showing image of spent fuel pool at 4, some fuel hotter due to maintenance at reactor