On 19 December 2014, Japan1s Nuclear Regulation Authority (NRA) provided the IAEA with a copy of a press?release regarding leakage of water treated by the multi-nuclide removal facility (ALPS) at the Fukushima Daiichi nuclear power station. The leakage resulted from an open valve in an open end of the branch pipe connected to the main pipe.
The press release confirmed that the leakage of treated water was stopped and contained and that leakage to the ocean had been ruled out.
The NRA will continue to be vigilant about TEPCO1s cause determination and prevention measures, the press release said.
Photos of the open of the branch from where the leak came from and accumulated water in the pipe trench are also attached in the NRA press release.