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Status of Fukushima Units

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Miroslav Lipar, 7 April 2011

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Status of Fukushima Units

  1. Status of Fukushima Units<br />Miroslav Lipar<br />7April 2011<br />
  2. Sequence of Events to Remove Water in Unit 1<br />Suppression Pool Surge Tanks<br />2x3400 m3<br />Condensate Storage tank<br />1900 m3<br />Condenser<br />1600 m3<br />2nd Step<br />Transfer to provide tank capacity <br />Mar 31st to Apr 2nd – Unit 1<br />3rd Step<br />Provide Space in Condenser<br />Apr 2nd – Unit 1<br />1st Step<br />Mar 24th – Mar 29th<br />Condenser filled<br />Water in Unit 1 Turbine Building <br />Approx. 20,000 tons <br />Planned<br />Rad Waste Treatment facility<br />Temp <br />Storage Tank<br />
  3. Sequence of Events to Remove Water in Unit 2<br />Suppression Pool Surge Tanks<br />2x3400 m3<br />1st Step -Transfer to provide tank capacity <br />Mar 29th to Apr 1st – Unit 2<br />Condensate Storage tank<br />2500 m3<br />Sea<br />Apr 5th 1,500 tons<br />Unit 5 & 6 sub drain pits<br />2nd Step - Transfer to provide capacity in condenser<br />Apr 2nd – (30 m3/h)<br />Low level contaminated water <br />Apr 5th<br />10,000 tons<br />Water in Unit 2<br />turbine building <br />Approx. 20,000 tons<br />Planned<br />Condenser<br />3000 m3<br />Planned<br />Rad Waste Treatment facility<br />Temp <br />Storage Tank<br />
  4. Sequence of Events to Remove Water in Unit 3<br />Suppression Pool Surge Tanks<br />2x3400 m3<br />Condensate Storage tank<br />2500 m3<br />1st Step -Transfer to provide tank capacity <br />Mar 28th to Mar 31st - Unit 3<br />Sea<br />Apr 5th 1,500 tons<br />Unit 5 & 6 sub drain pits<br />2nd Step - Transfer to provide capacity in condenser<br />Apr 5th – Unit 3<br />Low level contaminated water <br />Apr 5th<br />10,000 tons<br />Water in Unit 3<br />turbine building<br />Approx. 20,000 tons water<br />Later<br />Condenser<br />3000 m3<br />Rad Waste Treatment facility<br />Later<br />Temp <br />Storage Tank<br />
  5. Injection of water glass to block the water path<br /><ul><li>Borehole
  6. Injection of Tracer
  7. Injection of liquid glass</li></ul>Cable Trench<br />⑨<br />200<br />1900<br />O.P.+4.200<br />③<br />O.P.+4.150<br />Pit<br />O.P.+4.000<br />1800<br />O.P.+2.700<br />④<br />⑦<br />⑧<br />O.P.+2.200<br />1m<br />About<br />?<br />Screen Pump room<br />?<br />300<br />300<br />⑤<br />⑤<br />⑥<br />①<br />①<br />②<br />?<br />Crack<br />Pit<br />⑨<br />②<br />Injected liquid glass to block the water path in the gravel<br />Screen Pump room <br />⑥<br />⑧<br /> Drill vertically<br />Z<br />①~⑨:Positions of injection holes<br />Cross Section Plan<br />Floor Plan<br />
  8. Nitrogen injection<br />

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