– Gov’t aims for ‘cold shutdown’ of Fukushima reactors, but bemoans lack of data (Mainichi Japan, Nov. 14, 2011):
At the No. 1, 2 and 3 reactors, melted nuclear fuel seems to be penetrating the pressure vessels and even leaking out from the reactor buildings.
…
At the No. 4 reactor, which has no nuclear fuel in the reactor itself, about 1,535 fuel rods — about three times the number of fuel rods at the No. 1, 2, and 3 reactors — are kept in the spent nuclear fuel pool. For this reason, TEPCO completed the work to sustain the fuel pool with steel frames in late July.
See also:
And if something happens to Reactor 4, …
… it is all over:
– If Fukushima Reactor No. 4 Fuel Rods Spill On The Ground Tokyo And Yokohama Will Be Lost