Published: August 30th, 2012 at 4:06 pm ET
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Title: Nuclide Analysis Results of Marine Soil – Inside the Port Entrance of Fukushima Daiichi Nuclear Power Plant
Source: Tepco
Tested: July 23, 2012
Published: August 30, 2012
At sample points furthest from the reactors, cesium levels drop rapidly as the samples deepen:
① (0～10cm) Cs-134 @ 19,000 Bq/kg; Cs-137 @ 29,000 Bq/kg
① (10～20cm) Cs-134 @ ND Bq/kg; Cs-137 @ ND Bq/kg
① (20～30cm) Cs-134 @ ND Bq/kg; Cs-137 @ ND Bq/kg
③ (0～10cm) Cs-134 @ 360,000 Bq/kg; Cs-137 @ 540,000 Bq/kg
③ (10～20cm) Cs-134 @ 80 Bq/kg; Cs-137 @ 140 Bq/kg
③ (20～30cm) Cs-134 @ 77 Bq/kg; Cs-137 @ 110 Bq/kg
④ (0～10cm) Cs-134 @ 5,300 Bq/kg; Cs-137 @ 8,100 Bq/kg
④ (10～20cm) Cs-134 @ 120 Bq/kg; Cs-137 @ 200 Bq/kg
④ (20～30cm) Cs-134 @ 37 Bq/kg; Cs-137 @ ND Bq/kg
At sample points nearest the reactors, cesium levels do not drop rapidly. At location 6, the levels rise:
② (0～10cm) Cs-134 @ 29,000 Bq/kg; Cs-137 @ 44,000 Bq/kg
② (10～20cm)Cs-134 @ 7,500 Bq/kg; Cs-137 @ 12,000 Bq/kg
② (20～30cm) Cs-134 @ 24,000 Bq/kg; Cs-137 @ 39,000 Bq/kg
⑥ (0～10cm) Cs-134 @ 70,000 Bq/kg; Cs-137 @ 110,000 Bq/kg
⑥ (10～20cm) Cs-134 @ 73,000 Bq/kg; Cs-137 @ 110,000 Bq/kg
⑥ (20～30cm) Cs-134 @ 130,000 Bq/kg; Cs-137 @ 190,000 Bq/kg
Location 2 is nearest Reactor 1, and Location 6 is nearest Reactors 2, 3, and 4.
Published: August 30th, 2012 at 4:06 pm ET
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sending...
And there is nothing easy about decontamination. Here is a Youtube link which shows how much effort is required to find and remove a piece of exploded core the size of a grain of rice at Chernobyl:
http://www.youtube.com/watch?v=K-MC9VBSWa8
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thanks LAS. Just checked this out and it's a must see. Illustrates the danger of one small particle of irradiated debris getting into your system…
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If you like that, Aftershock, check out Bionerd's channel.
http://www.youtube.com/watch?v=ejZyDvtX85Y
/god I love geeky chics….. =)
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Gamma spectroscopy of the Chernobyl fuel fragment which Ms. Bionerd found in that video.
http://www.youtube.com/watch?v=LRMDc6zeVWQ
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could tepco have put clean soil on top to mess with the readings of a particularly bad area?? that would explain the readings… maybe lumps of core down there?
why didnt they go deeper if they found this out? it would have been apparent with a gieger counter as they were taking the samples.. were they limited to what they could do?
good catch admin..
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There was that early bulldozing in March 2011 – never really explained in detail that I know of.
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TEPCO scraped off the top layer to cover fuel cells/rods up. Guess they "by accident" put it into the ocean? No need to follow international nuclear regulations in Japanese waters..right?
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thinking arclight, that particular isotopes will differ in how they interact with varying levels of water chemistry. The phenomena would be attributed to ionic exchange rates which create 'static clouds' that linger within specific layers; eventually settling-out on the surface bottom. Just a thought…
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Oops!!! Corium and bleed water clues! I guess they have been running some drilling core samples…until the drilling head melted off.
"Sixteen months ago I couldn't even spell nuclear engineer…and now I are one!"
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Ha
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To me, it indicates that there is underground subsidence from the reactors (contaminated cooling water) that is leeching into the Pacific. I'd be interested in seeing readings from locations closer to units 1-3.
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Humm..does this mean that the source of the cesium production is well below the reactors and the other areas are being contaminated from above?
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190,000 IN THE OCEAN! SAMPLE SIX (6) –IS OFFSHORE OF THE UNIT 3 WATER INTAKE CANAL. THE MARINE SOIL!!!
God help us.
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Yeah. But take a look at sample #3.
540,000 Bq/Kg Cs-137
Well, if the Japanese people ever wake up enough to arrest the politicians TEPCO executives responsible for creating this mess, and 'make them eat dirt', I can suggest where they should source the dirt.
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The only way to get any idea of what is going on at Fukushima, is to consider what TEPCO does NOT say.
So they take soil samples down to a mighty depth of ONE FOOT in the sea bottom silt offshore of the reactors, within the intake seawall enclosed area.
But as I recall they also in the last year:
- Built up the seawalls with bagged rock (and probably disturbed the bottom silt a lot in the process.)
- Droped clay/concrete slurry all over this area, to fix in place the radioactives that had precipitated there already.
So these figures are fairly meaningless, except that they tell us the obvious – there's some very severely contaminated soil there, there's ongoing additional contamination, and stuff has been moved around a lot down there.
What TEPCO are NOT doing (or telling us about if they did) is core sampling soil on the land close around the reactors. How about drilling down 20 feet right next to reactors 1, 2 and 3, and publishing the results for every foot of core sample?
But no, can't do that, because that would tell everyone that the cores have melted out the bottom of the reactors, and are saturating the groundwater with radioactives. Which they must have, if worker reports of "steam coming up from the ground" around the reactors are true.
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I thought TEPCO cemented the marine floor of the qua…
… Some sections even TWICE.
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