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Chernobyl's new safe confinement structure almost finished

Discussion in 'Engineering' started by amusicsite, 14 Nov 2016.

  1. amusicsite

    amusicsite dn ʎɐʍ sᴉɥ┴ Staff Member

    Location:
    UK
    https://en.wikipedia.org/wiki/Chernobyl_New_Safe_Confinement

    Quite a feat of engineering and taken a long time to get right. It's basically a giant arch structure on a rail that can be slid over the damaged reactor then the end walls will be built. Inside is a massive crane that will be used to move out some of the debris and start dismantling the site.

    I quite like that it was designed from and international competition which no overall winner was found. So instead they looked at the best three and came up with the final design. Nice to see logic take over from corporate competition with one winner takes all.

    Obviously radiation has been a big problem both in not disturbing it too much during construction and not giving the workers too much exposure to it.

    [​IMG]
    2013
    [​IMG]
    2013

    [​IMG]
    April 2016
     
    classic33 likes this.
  2. beanz

    beanz Staff Member Staff Member

    I re-watched a few documentaries recently about the Chernobyl disaster. Even all these years later it's still chilling to think what happened and how people suffered as a result.

    Also still remember going to work here in the UK in the days after, reading about the wind direction and wondering what the risks were to us in England.
     
    amusicsite likes this.
  3. amusicsite

    amusicsite dn ʎɐʍ sᴉɥ┴ Staff Member

    Location:
    UK
    classic33 and beanz like this.
  4. amusicsite

    amusicsite dn ʎɐʍ sᴉɥ┴ Staff Member

    Location:
    UK
    P.S. the big arch is having a test move at the moment. Hence the post :wink:
     
  5. amusicsite

    amusicsite dn ʎɐʍ sᴉɥ┴ Staff Member

    Location:
    UK
  6. beanz

    beanz Staff Member Staff Member

    Brilliant film. Went to see it at the cinema when it first came out and it fully lived up to the billing. Quite apart from the plotline of corporate corner-cutting, the parts where the technicians deal with the events in the control room were gripping, and it's still one of my favourite movies.

    There was a lot of discussion around that time about how we would cope with a real-life potential meltdown situation. It certainly added to the debate about nuclear safety.
     
    amusicsite likes this.
  7. amusicsite

    amusicsite dn ʎɐʍ sᴉɥ┴ Staff Member

    Location:
    UK
    Indeed still a great film. I rediscovered it again when it was shown on TV recently and still seem like one of the most likely failure points in the nuclear industry. Cost cutting at the expense of safety. Looks like the lessons from the film were not learnt though and the plot was spot on... Unfortunately!
     
  8. amusicsite

    amusicsite dn ʎɐʍ sᴉɥ┴ Staff Member

    Location:
    UK
  9. classic33

    classic33 Über Geek

    What are they going to do about the "Elephants Foot"?
     
  10. amusicsite

    amusicsite dn ʎɐʍ sᴉɥ┴ Staff Member

    Location:
    UK
    "At this time no policy has been made as to the disposal and processing of fuel containing materials."
    https://en.wikipedia.org/wiki/Chernobyl_New_Safe_Confinement#Demolition_equipment

    At this point there is no plan to remove that, it's much more about:


    1) Convert the destroyed ChNPP Unit 4 into an environmentally safe system (i.e. contain the radioactive materials at the site to prevent further environmental contamination)
    2) Reduce corrosion and weathering of the existing shelter and the Unit 4 reactor building
    3) Mitigate the consequences of a potential collapse of either the existing shelter or the Unit 4 reactor building, particularly in terms of containing the radioactive dust that would be produced by such a collapse.
    4) Enable safe demolition of unstable structures (such as the roof of the existing shelter) by providing remotely operated equipment for their demolition.
    5) Qualify as a Nuclear entombment device.

    Which seems to be:- contain, stop it getting worse, remove the stuff that is likely to collapse and take out as much low level waste as possible. I reckon the 'foot' eventually gets buried in concrete.