Japan's industry ministry is promoting releasing diluted radioactive tritium into the sea:
Dumping tritium from Fukushima into sea is best option: ministry THE ASAHI SHIMBUN, April 20, 2016 at 14:55 http://www.asahi.com/ajw/articles/AJ201604200041.html
The industry ministry concluded that releasing diluted radioactive tritium into the sea is the most feasible option in dealing with contaminated water accumulating at the Fukushima No. 1 nuclear power plant.Earthquakes continue in Kyushu but Japan isn't going to shut down the Sendai nuclear power plant in the region:
"Strong quakes continue to jolt Kumamoto" NHK April 20, 2016, http://www3.nhk.or.jp/nhkworld/en/news/20160420_04/
The Meteorological Agency says more than 650 earthquakes, including minor ones, have occurred in Kumamoto and adjacent Oita Prefecture since Thursday. 89 of them registered an intensity of 4 or higher. [on Japan's seismic scale of zero to 7].
Japan declares nuclear reactors safe after quake, http://www.reuters.com/article/us-japan-quake-nuclear-idUSKCN0XF060?il=0Meanwhile Fukushima continues to produce visible atmospheric emissions, calling into question the effectiveness of the ice wall in reducing the dispersion of radionuclides: