Workers sample radioactive materials in the air above the reactor building of Fukushima Daiichi Nuclear Power Station Unit 4, 23 May 2011. TEPCO

By arevamirpal::laprimavera
24 May 2011 So says the Mainichi Shinbun reporters who must be reading the report submitted by TEPCO on May 23 and released on May 24. Multiple 10-centimeter holes in the Reactor 2 Containment Vessel, and one 7-centimeter hole in the Reactor 1 Containment Vessel. Hiroaki Koide of Kyoto University was so right. The Containment Vessels’ integrity has been long gone. TEPCO should have known all along, and all the experts, including Koide, must have known. From Mainichi Shinbun Japanese (2:30AM JST 5/25/2011):

東京電力が24日公表した福島第1原発2、3号機で炉心溶融があったとする報告書の中で、1号機は原子炉圧力容器の外側にある格納容器に直径7センチ相当の穴、2号機では格納容器に直径10センチ相当の複数の穴が開いている可能性が初めて示された。 In the report that TEPCO disclosed on May 24 regarding the core meltdown in the Reactors 2 and 3, the possibility of holes in the Containment Vessels of the Reactors 1 and 2 is mentioned for the first time. The Reactor 1 Containment Vessel may have a hole 7-centimeter in diameter, and the Reactor 2 Containment vessel may have multiple holes 10-centimeter in diameter.

According to the Mainichi article, TEPCO came to the conclusion of multiple 10-centimeter holes in the Reactor 2 Containment Vessel and one 7-centimeter hole in the Reactor 1 Containment Vessel from the analysis of the pressure data.

Multiple 10-Centimeter Holes in Reactor 2 Containment Vessel at #Fukushima I Nuke Plant