Report: Radioactivity levels rising at Fukushima Unit No. 2 sub-drain since November (PHOTO)

Published: January 22nd, 2013 at 12:28 pm ET


Title: Contaminated water still a serious issue at Fukushima Daiichi
Source: Enformable
Date: Jan 22, 2013

(Click to Enlarge)

[…] over 220,000 metric tons of contaminated water have been collected and stored on site, still another 75,000 tons remains in the reactor buildings. Every day at least another 40 tons of contaminated water are created […]

The utility has been so far unable to prevent the contaminated water injected into the damaged reactors from flowing out of the buildings into the environment and even escaping directly into the ocean. […]

The levels of radioactivity measured near the Unit 2 Sub-Drain have been on the rise since November […] it is critical to control the seeping of contamination through the local groundwater.

See Tepco’s report here

Published: January 22nd, 2013 at 12:28 pm ET


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20 comments to Report: Radioactivity levels rising at Fukushima Unit No. 2 sub-drain since November (PHOTO)

  • CodeShutdown CodeShutdown

    Well it seems like a lot of water. lets see, add the stored and reactor water, approximately 300,000 tons. Multiply by 32 cubic feet per ton gives 9,600,000 cubic feet. Divide by 5280 feet in a mile to get a visualization that if you had a trench one x one foot deep and wide, it would stretch 1818 miles. (30 cm x 30 cm x 2900 km) Looks like roughly the trench would stretch twice the length of japan. There is about 60 pints in a cubic foot of water, so there is enough highly radioactive water for 570 million people to drink a pint (half liter). It may not be people, but thats a lot of life forms (oceanic) that will be contaminated, one way or the other. If you make a bunch of poison, then you have to deal with it eventually. This was our argument against nuclear, so many years ago. It seems so painfully obvious. Now we will pay the price of not having foresight with the painful deaths of millions of animal and human beings and perhaps destruction of the entire ecosystem. (I did not double check my numbers, so re calculate for accuracy)

  • razzz razzz

    If you have been following the Fukushima Diary site then you know Unit 2 has two sensors that have been reading above boiling but TEPCO discounts those sensors as broken anytime the readings are not favorable. Along with continued steady high fallout readings from TEPCO in the harbor waters, it makes sense at least Unit 2's blob still fissions uncontrollably.

  • jec jec

    Comment "seeping contamination thru the groundwater" chilling. So the corium is down into the groundwater. Nothing is being done to stop this flow. Lots of flapping mouths but no actual effort to control the radiation from contaminating the oceans. the DRINKING water could be contaminated, not just from fallout from the plants, but from wicking of radiation byproducts. The water table is also another transport layer. Chilling..

  • PattieB PattieB

    I'm in USA… MA to be specific… it's dropped 0.22 of radioactivity into my tap water HERE!

    Could be contaminating..!? COULD!?

    • PattieB PattieB

      I wouldn't go there without full rad suit! I'm talking JAPAN as a whole! Drink the water there..!?? Are you working a death-wish here, or what!?

      • PattieB PattieB

        Tainted water…. Gee, makes it sound like it's got just a little bit dirty… not much to worry anyone. NOT!

      • RJ RJ

        "as a whole"?

        Well, I'm in Hiroshima PattieB, and I feel a lot safer than those on the west coast of North America. Of course, I have no finger nails anymore, but, I don't feel the need to wear a full Rad suit.

    • amberlight amberlight

      Pattie, the radioactivity in the USA could also be coming from our own aging nuclear dinosaurs. For some [sarcasm alert] unfathomable reason, the "authorities" don't trouble themselves with publicizing these ongoing events.

      • moonshellblue moonshellblue

        Agreed and being detected in the water makes it almost a sure bet. Now if it were found in a rain out it could be either but usually Fukushima as they incinerate radioactive waste.

  • CodeShutdown CodeShutdown

    could someone put the radioactivity in the chart in perspective? It appears to be logarithmic which means its worse than the chart appears. But how much of this water would be a lethal dose?

    • CodeShutdown CodeShutdown

      So my untrained eye says the chart above indicates they are getting close to one becquerel per cubic centimeter, which seems equivalent to 1000 Bq per kg, which I see is about equal to the radioactivity of coffee. This does not seem at all correct. I must be off by several orders of magnitude. how much of this contaminated water would you have to drink to get a serious dose?


      • patb2009

        as i read it, it's 1 bq/CC of each isotope of cesium,

        so if you drank a liter of soda made from this you would ingest 2,000 Bq of cesium.

        while this isn't a huge amount of radiation, you have to look at the isotope.
        Cesium is fairly active an alpha emitter and the human body is not adapted to it like K-40 or C-14.

        now the human body has about 3700 Bq of C-14 and K-40 rolling in it, so, drinking a liter of this
        water would increase your body radiation load by 50%.

  • Donna

    I have a little app on my iPad, "EcoData Radiation". I have been monitoring the measurements around the world (sparse distribution of stations but still some info I hoped…) Until recently, the numbers @ Fukushima (Lat: 37.42300, Long: 141.03290) were between 205 – 220 uSv/h. Recently they dropped to 140-150, and quite abruptly I may say. Have a hard time believing… Are there other sources of monitoring radiation data that you know of? Besides radiationnetwork that is?

  • PattieB PattieB

    If you look at my chart here…

    you will understand that as the corium descends, it will encounter strata "water Bands" on its way to bedrock. Each time it hits one, it will cause a jump in temperature and steam generations up in the remains of the reactor building. Each time it does, the rad-count and temperature will be elevated as a result. When it DOES hit bedrock, and so gain a workable reflector… it may again go critical and explode! This would not be conductive, and likely result in the complete destruction of the entire site, and all of the remaining buildings!

    • patb2009

      well the depth will help contain any explosion, and the yield will be relatively low.
      i'd say the general problem is low level reactions are putting out lots of short lived isotopes.

      • Time Is Short Time Is Short

        But any explosion of one corium may explode the other coriums, possibly setting off a chain reaction, and a large percentage of highly lethal radioactive materials will be further aerosolized up into the atmosphere and carried around the globe in the jetstream.

        And the 'general problem' isn't 'low level reactions putting out short lived' isotopes. The general problem is medium level reactions putting out long lived isotopes, on the scale of millions of years. We passed 'low level' reactions over a year ago, if any 'reactions' at Fukushima could ever be considered 'low level'.

      • PattieB PattieB

        You need to understand… it's a PLUTONIUM laden corium! There is no way to know what yield it will have… depends entirely on how the material settles-out against, or in a reflector. It could be like our underground tests, only our tests are A WHOLE LOT DEEPER!

  • PattieB PattieB

    The effects of an underground nuclear test may vary according to factors including the depth and yield of the explosion, as well as the nature of the surrounding rock.[25] If the test is conducted at sufficient depth, the test is said to be contained, with no venting of gases or other contaminants to the environment.[25] In contrast, if the device is buried at insufficient depth ("underburied"), then rock may be expelled by the explosion, forming a crater surrounded by ejecta, and releasing high-pressure gases to the atmosphere (the resulting crater is usually conical in profile, circular, and may range between tens to hundreds of metres in diameter and depth[26]). One figure used in determining how deeply the device should be buried is the scaled depth of burial, or -burst.[25] This figure is calculated as the burial depth in metres divided by the cube root of the yield in kilotons. It is estimated that, in order to ensure containment, this figure should be greater than 100.[25][27]