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