Japan's nuclear regulators have approved a plan to release into the ocean water from the wrecked Fukushima Dai-ichi nuclear power plant, the government said on Friday. The water, used to cool reactors in the aftermath of the 2011 nuclear disaster, is being stored in huge tanks in the plant, and amounted to more than 1.3 million tonnes by July. The regulators deemed it safe to release the water, which will still contain traces of tritium after treatment, the foreign ministry said in a statement.