Akio Matsumura, a former UN diplomat, makes a case that the reactor 4 spent fuel pool poses a serious threat within a 2-3 year time frame.
 
Matsumura argues there are four things that leave little to question.
1. Many scientists believe that it will be impossible to remove the 1,535 fuel assemblies in the pool of Reactor 4 within two or three years.2. Japanese scientists give a greater than 90 p…