There are currently two dedicated research facilities for dealing with decommissioning related research. Additional work takes place at the JAEA laboratory facilities at Tokai. Still more research work is taking place at various universities and the nuclear lab research facilities of other countries.
The two dedicated facilities are the hot lab in Okuma and the Remote Technology Development facility at Naraha.
As of early 2018 the administration building on site was completed and opened for use. The hot lab building is still under construction. This facility is near Fukushima Daiichi and is intended to do research and analysis on fuel debris samples.
This work will help develop decommissioning and fuel debris handling technology. The lab includes “hot cell” isolated work cells that allow researchers to safely handle highly radioactive substances.
More about the Okuma Hot Lab can be found via this link:
Naraha Remote Technology Development Center:
The Remote Technology Development Center in Naraha opened in 2016. The facility includes a 3D virtual reality suite used to display collected 3D visual data from Fukushima Daiichi. This aids planning for future work efforts without the need to go into the high radiation areas of the reactor buildings.
Find out more about the Naraha facility at their website: