Nuclear waste disposal isn't an engineering problem
The folks in Japan working the #4 unit of the Fukushima Daiichi plant would like to have a word with you about this. It was shut-down and defuelled before the tsunami struck, and despite this its spent fuel pool's contents blew the building apart.
You are misinformed. While the stability of the fuel pools was unknown and a concern at the time of the disaster, it was later determined that they were in fact not leaking, damaged, or in danger. No fuel in storage was compromised. The damage to Unit 4 was caused by the hydrogen explosion of Unit 2.