Progress Status of Fukushima Daini Nuclear Power Station Recovery Plan(Monthly Report: April 2012)
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Unit 1 power panel (P/C 1C-1) installation
1. Power panel (P/C 1C-1) carried in from the opening of the Reactor Building annex
Photo taken on April 13, 2012
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2. Power panel (P/C 1C-1) carried down through the opening
Photo taken on April 13, 2012
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3. Moving the power panel (P/C 1C-1) after it’s lifted down
Photo taken on April 13, 2012
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4. Power panel (P/C 1C-1) installation completed on April 19
Photo taken on April 23, 2012
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Function check of the residual heat removal cooling sea water system (B system)
Photo taken on April 5, 2012
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Photo taken on April 5, 2012
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3. Function check after installation (Temperature measurement during the trial run)
Photo taken on April 12, 2012
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4. Function check after installation (Vibration measurement during the trial run)
Photo taken on April 12, 2012
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Permanent installation of Unit 4 residual heat removal cooling system, residual heat removal cooling sea water system and emergency diesel generator cooling system
Permanent installation of power panel (P/C 4D-2) has been completed on March 23, 2012
Photo taken on March 23, 2012
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Photo taken on April 11, 2012
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Photo taken on April 26, 2012
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Photo taken on April 12, 2012
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Photo taken on April 26, 2012
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Photo taken on April 25, 2012
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Photo taken on April 12, 2012
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Facilities subject to the visual inspection
1. PCV entrance (Airlock for workers)
Photo taken on April 17, 2012
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Photo taken on April 17, 2012
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Photo taken on April 17, 2012
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4. Pedestal (Base structure of RPV)
Photo taken on April 17, 2012
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Photo taken on April 17, 2012
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Photo taken on April 17, 2012
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Issues detected (Press release issued on April 6, 2012)
7. Paint coming off on PCV inner surface
Photo taken on March 28, 2012
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8. Rusted stud bolt on the reactor recirculation pump (B)
Photo taken on February 16, 2012
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Inspection of the inside of Unit 4 main exhaust duct
1. Outer appearance of Unit 4 main exhaust duct
Photo taken on April 5, 2012
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2. Inspection door of the main exhaust duct
Photo taken on April 5, 2012
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3. Inspecting the inside of the main exhaust duct
Photo taken on April 5, 2012
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4. Displacement measurement done on the main exhaust duct from April 19 to 26, 2012
Photo taken on April 24, 2012
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Recovery work for Unit 1 D/G (A, H) flooded due to Tsunami
Flooded condition of Unit 1 D/G (A)
Photo taken on March 20, 2011
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Recovery work for Unit 1 D/G (A)
Photo taken on April 17, 2012
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Flooded condition of Unit 1 D/G (H)
Photo taken on March 20, 2011
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Recovery work for Unit 1 D/G (H)
Photo taken on April 17, 2012
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Photo taken on April 20, 2012
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Photo taken on April 17, 2012
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Photo taken on April 17, 2012
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