Environment & Energy
Related: About this forumOne year on: Steady progress at Fukushima
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Accumulated water
As fast as Tepco is injecting water to cool the reactors, it is emerging from the damaged reactor pressure vessels and accumulating in a body stretching through each unit's reactor building and turbine building basement. Although this water is highly radioactive, it is being purified at the same rate and then stored on-site in ever-increasing volumes.
Despite being more than clean enough for discharge, Tepco has never been given permission to release the water into the sea. Currently some 160,000 cubic metres is in storage, tanks, with a further 40,000 cubic metres of capacity planned for installation. The Japan Atomic Energy Agency is currently analysing samples of water both from the basements and after purification, but Tepco is nevertheless considering an Advanced Liquid Processing System that could remove radioactivity in the water still further - even beyond the limit of detectability, it said.
http://www.world-nuclear-news.org/RS_One_year_on_Steady_progress_at_Fukushima_Daiichi_0703121.html
Hmmm... that's unit 4? I could have sworn I was told it was collapsing. I know we were shown fuzzy before/after photos.
intaglio
(8,170 posts)Completely unbiased, of course. Oh and 4 was not "collapsing" it was in danger of collapse due to the grossly impaired structure and that's why they have had to remove the remains of the fuel handling crane.
Now the contaminated coolant, is that "safe" for discharge under the original Japanese standards or "safe" for discharge under the modified standard Japan has been forced to adopt?
By the way do you still insist (as you originally did) that no meltdown has taken place in any of the Fukushima reactors?
Or do you believe (as part of your later stance) that containment was not breached?
Enquiring minds need to know ...
/spelling
FBaggins
(26,697 posts)It has been variously "reported" as in imminent danger of collapse all the way through actually collapsed and the pool spilled onto the ground... for many months now.
(On edit - here's one http://www.democraticunderground.com/10028042)
it was in danger of collapse due to the grossly impaired structure
Not really. A structural analysis was done and it was clear that there wasn't a danger of collapse. You may elect to question the source of this report, but the source for "in danger of collapse" is "an active imagination".
http://www.neimagazine.com/story.asp?storyCode=2060289
that's why they have had to remove the remains of the fuel handling crane
Hardly. They've been steadily removing everything above the pool for months now so that they can get into the pool to remove the spent fuel.
Now the contaminated coolant, is that "safe" for discharge under the original Japanese standards or "safe" for discharge under the modified standard Japan has been forced to adopt?
The original ones. It's the new standard that's keeping them from releasing it.
By the way do you still insist (as you originally did) that no meltdown has taken place in any of the Fukushima reactors?
Are you still insisting that Fukushima released more radioactivity than Chernobyl? Or that the "they're in air" that Gundersen mistakenly claimed was the result of the fuel pool collapsing and the fuel had spilled out?
You know what the difference is between those two questions? I never actually said the one you accuse me of (in fact said just the opposite from VERY early on in the events).
Or do you believe (as part of your later stance) that containment was not breached?
I'd have to see that post as well. By the most important standard, the containment did its job (when many at the time said that it couldn't). By a tighter standard saying that any release was necessarily a failure of containment, I didn't challenge that it had happened (from the time there was evidence that it had).