Fuel pool cooling and filtering system valve of Unit 4, Fukushima Daiichi Nuclear Power Station (20B Valve) [pictured on July 6, 2011]
2-3-2-2 Spent fuel
Substances found Photo taken on August 28, 2012 Photo taken by Tokyo Electric Power Company
Locknuts Photo taken on August 28, 2012 Photo taken by Tokyo Electric Power Company
Removing a tie rod from the fuel assembly Photo taken on August 28, 2012 Photo taken by Tokyo Electric Power Company
Fuel investigation [taken on August 28, 2012] (taken by Tokyo Electric Power Company)
Second unused fuel (Appearance) Photo taken on August 29, 2012 Photo taken by Tokyo Electric Power Company
First unused fuel (Rust partially removed) Photo taken on August 28, 2012 Photo taken by Tokyo Electric Power Company
First unused fuel (Rust attached on the surface) Photo taken on August 28, 2012 Photo taken by Tokyo Electric Power Company
The Protection platform added on Unit 4 spent fuel pool at Fukushima Daiichi Power Station