Tokyo Electric Power Co. reported Wednesday that the bottom of all three crippled reactors' pressure vessels at its Fukushima No. 1 nuclear plant were now below 100 degrees — a collective first since the crisis erupted after the March 11 temblor-tsunami catastrophe.
The temperature of reactor 2, which had remained over 100 degrees, had fallen to 99.40 as of 5 p.m. Wednesday.
The temperature for reactor 1 has been under 100 degrees since late July, and the same condition was reached for reactor 3 on Sept. 5.