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Status of Fukushima Units
 

Status of Fukushima Units

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Miroslav Lipar, 7 April 2011

Miroslav Lipar, 7 April 2011

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    Status of Fukushima Units Status of Fukushima Units Presentation Transcript

    • Status of Fukushima Units
      Miroslav Lipar
      7April 2011
    • Sequence of Events to Remove Water in Unit 1
      Suppression Pool Surge Tanks
      2x3400 m3
      Condensate Storage tank
      1900 m3
      Condenser
      1600 m3
      2nd Step
      Transfer to provide tank capacity
      Mar 31st to Apr 2nd – Unit 1
      3rd Step
      Provide Space in Condenser
      Apr 2nd – Unit 1
      1st Step
      Mar 24th – Mar 29th
      Condenser filled
      Water in Unit 1 Turbine Building
      Approx. 20,000 tons
      Planned
      Rad Waste Treatment facility
      Temp
      Storage Tank
    • Sequence of Events to Remove Water in Unit 2
      Suppression Pool Surge Tanks
      2x3400 m3
      1st Step -Transfer to provide tank capacity
      Mar 29th to Apr 1st – Unit 2
      Condensate Storage tank
      2500 m3
      Sea
      Apr 5th 1,500 tons
      Unit 5 & 6 sub drain pits
      2nd Step - Transfer to provide capacity in condenser
      Apr 2nd – (30 m3/h)
      Low level contaminated water
      Apr 5th
      10,000 tons
      Water in Unit 2
      turbine building
      Approx. 20,000 tons
      Planned
      Condenser
      3000 m3
      Planned
      Rad Waste Treatment facility
      Temp
      Storage Tank
    • Sequence of Events to Remove Water in Unit 3
      Suppression Pool Surge Tanks
      2x3400 m3
      Condensate Storage tank
      2500 m3
      1st Step -Transfer to provide tank capacity
      Mar 28th to Mar 31st - Unit 3
      Sea
      Apr 5th 1,500 tons
      Unit 5 & 6 sub drain pits
      2nd Step - Transfer to provide capacity in condenser
      Apr 5th – Unit 3
      Low level contaminated water
      Apr 5th
      10,000 tons
      Water in Unit 3
      turbine building
      Approx. 20,000 tons water
      Later
      Condenser
      3000 m3
      Rad Waste Treatment facility
      Later
      Temp
      Storage Tank
    • Injection of water glass to block the water path
      • Borehole
      • Injection of Tracer
      • Injection of liquid glass
      Cable Trench

      200
      1900
      O.P.+4.200

      O.P.+4.150
      Pit
      O.P.+4.000
      1800
      O.P.+2.700



      O.P.+2.200
      1m
      About

      Screen Pump room

      300
      300







      Crack
      Pit


      Injected liquid glass to block the water path in the gravel
      Screen Pump room


       Drill vertically
      Z
      ①~⑨:Positions of injection holes
      Cross Section Plan
      Floor Plan
    • Nitrogen injection