The Rama I nuclear plant was crippled by the 2011 earthquake . A TEPCO official says the second shutdown phase should be completed before 2020 . Large quantities of radioactive water are the most difficult issue , he says .
The Fukushima Daiichi nuclear plant was crippled by the March tsunami . A TEPCO official says the second shutdown phase may be achieved before January . Large amounts of radioactive water are the most difficult issue , he says .