I'm also surprised that the TEPCO engineers didn't have a team working on at least increasing the storage capacity on-site for the huge volumes of radioactive water they were running through the damaged reactors and the spent fuel pools.

They seem to have more problem collecting the water after it ran through than in storing it. IF they could have sucked it all up again, I suppose an empty oil tanker might do it (obviously they can't construct anything that big with the time they've got). But when it's all just running through cracks in the foundations, what else can they do but what they're doing now?

The priority has to be preventing a worse fuel melt (which could make the whole site inaccessible and send it on the path to total flaming
disintegration). They have to accept a certain amount of escaped coolant water to achieve that.