So this IAEA thread is to say that Daiichi / Fukushima I Unit 4 is the only unit with fuel in the spent fuel containment pool?
I thought otherwise unless the report that said the pools 5 and 6 were heating up and it really meant instead that the cores of 5 and 6 are heating up from their cold shut-down state.
I sorely wish some responsible party with reputable knowledge would present a better unit-by-unit status report on the SIX units at Fukushima I and the FOUR units at Fukushima II. Fukushima II appears to be functional and safely shut-down with residual cooling functions working.
It may be that they have spent fuel in storage in the pools and fresh fuel in the cores. That could very well be. Evidently Unit 4 did a complete core offload for some reason.