boiling waters adjacent to fukushima reactors, page-22

"Cold shutdown is declared when the cooling water doesn't boil at atmospheric pressure.. At Fukushima, the water is far below boiling (30-40C from memory) in all reactors and has been that way since late 2011."


I refer to Spanners comment:
"Tepco said it doesn't think that water has flowed into the sea but can't say for sure. Some of the flooded reactor basements are similarly too hot to approach, and it is still not clear where the melted fuel cores are, or in what state."

which appears to contradict your statement.