More than a third of the fuel assemblies at the Fukushima Daiichi nuclear Unit 4 have been moved into a spent fuel pool.
As of March 31, 550 out of the 1,533 fuel assemblies have been moved out of the damaged reactor and into a common pool. Of those, 528 are spent fuel assemblies and 22 are unirradiated, or new, fuel assemblies, according to plant operator Tokyo Electric Power Co. (TEPCO).
Moving the fuel assemblies is the first step in decommissioning the reactor, which was damaged by hydrogen explosions following the March 2011 earthquake and tsunami. The transfer began on November 18, 2013 and is expected to be completed at the end of this year. TEPCO created an in-house company, the Fukushima Daiichi D&D Engineering Co., that would solely focus on decommissioning and decontamination of radiated water on the site.
In other TEPCO news, Fumio Sudo took over as chairman of the company on April 1. He vowed to carry out compensation to victims of the accident and improve the management of contaminated water on site.