27 January 2015
Radioactivity in water near the Fukushima Daiichi nuclear power plant has remained low and stable from 18 to 24 January 2015, according to the regular update and sea area monitoring results provided by Japan's Nuclear Regulation Authority (NRA) to the IAEA.
The NRA also provided a progress report on its mid- and-long term roadmap for decommissioning and contaminated water management.
On Friday 23 January 2015, TEPCO announced that they were extending the deadline (originally set for March 2015) for the completion of the treatment of accumulated contaminated water. The following press release and information sheet provide more information.
20 January 2015
Measurements of seawater obtained in the vicinity of the Fukushima Daiichi Nuclear Power station remained low and stable between 11 to 17 January 2015, according to the regular update and sea area monitoring results provided by Japan's Nuclear Regulation Authority to the IAEA.
The recently reported deaths of two workers - one in Daiichi and the other in Daiini - have both been classified as accidents and not related to any radiological exposure.
The following news stories have further information:
http://www.tepco.co.jp/en/press/corp-com/release/2015/1247504_6844.html
http://www.tepco.co.jp/en/press/corp-com/release/2015/1247513_6844.html
13 January 2015
Measurements of seawater obtained in the vicinity of the Fukushima Daiichi Nuclear Power station continued to show low and stable results between 4 to 11 January, according to the regular update and sea area monitoring results provided by Japan1s Nuclear Regulation Authority to the IAEA.
7 January 2015
Radioactive levels of sampled water near the Fukushima Daiichi nuclear power plant have remained substantially below operational targets, according to a report by Japan’s Ministry of Foreign Affairs provided to the IAEA.
The report, which is provided monthly to all Missions in Tokyo, covers groundwater bypassing measurements taken on the 4th, 10th, 16th, 22nd and 29th of December.
6 January 2015
All radionuclides in sea water continue to remain low and stable between 22 December to 3 January in the vicinity of the Fukushima Daiichi Nuclear Power Station, based on the regular update and sea area monitoring results provided by Japan1s Nuclear Regulation Authority to the IAEA on 6 January 2015.
24 December 2014
All radionuclides in sea water remained low and stable in the vicinity of the Fukushima Daiichi Nuclear Power Station, according to an update and monitoring results provided to the IAEA by Japan's Nuclear Regulation Authority on 24 December.
24 December 2014
Fuel removal from the Unit 4 Spent Fuel Pool at the Fukushima Daiichi Nuclear Power Station was completed on 22 December, according to a news release provided to the IAEA by Japan's Nuclear Regulation Authority on 24 December. This marks a major step towards the decommissioning of the plant.
Removal of the 1,535 fuel assemblies including the 1,331 spent fuel and the other unused fuel from Unit 4 began in November 2013 after extensive work to stabilize the heavily damaged building. The spent fuel assemblies have been moved from a spent fuel pool that is suspended four stories high to a pool in a separate building at ground level. The unused fuel was removed and transported to a pool in Unit 6, one of two reactor buildings at the facility that was not damaged during the March 2011 earthquake and tsunami.
19 December 2014
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.
16 December 2014
On 16 December 2014, the Nuclear Regulation Authority (NRA) of Japan provided the IAEA with an update on radioactivity in seawater at TEPCO's Fukushima Daiichi Nuclear Power Station (NPS).
The update on the daily monitoring by TEPCO of seawater near the Fukushima Daiichi NPS indicates that the concentrations of all radionuclides (i.e. Cs-134, Cs-137, total Beta and H-3) remained low and stable from 7 November to 13 December 2014 at the sampling points T-1 and T-2-1.
In addition, the NRA provided an update on sea area monitoring results for radioactivity obtained from sea water samples taken at a distance of 2 to 200 kilometres from TEPCO's Fukushima Daiichi NPS.
9 December 2014
On 9 December 2014, the Nuclear Regulation Authority (NRA) of Japan provided the IAEA with an update on radioactivity in seawater at TEPCO's Fukushima Daiichi Nuclear Power Station (NPS).
The update on the daily monitoring by TEPCO of seawater near the Fukushima Daiichi NPS indicates that the concentrations of all radionuclides (i.e. Cs-134, Cs-137, total Beta and H-3) remained low and stable from 30 November to 6 December 2014 at the sampling points T-1 and T-2-1.
In addition, the NRA provided an update on sea area monitoring results for radioactivity obtained from sea water samples taken at a distance of 2 to 200 kilometres from TEPCO's Fukushima Daiichi NPS.
2 December 2014
On 2 December 2014, the Nuclear Regulation Authority (NRA) of Japan provided the IAEA with an update on radioactivity in seawater at TEPCO's Fukushima Daiichi Nuclear Power Station (NPS).
The update on the daily monitoring by TEPCO of seawater near the Fukushima Daiichi NPS indicates that the concentrations of all radionuclides (i.e. Cs-134, Cs-137, total Beta and H-3) remained low and stable from 23 to 29 November 2014 at the sampling points T-1 and T-2-1.
In addition, the NRA provided an update on sea area monitoring results for radioactivity obtained from sea water samples taken at a distance of 2 to 200 kilometres from TEPCO's Fukushima Daiichi NPS.
1 December 2014
On 1 December 2014, Japan provided the IAEA with a copy of a regular report, provided to all Missions and international organizations in Tokyo, on the release record and the post-release sea water monitoring results of "Groundwater bypassing" at the Fukushima Daiichi Nuclear Power Station (NPS) during November 2014. Following the 28 October 2014 release, groundwater at the Fukushima Daiichi NPS was released on 2, 7, 12, 17, 22 and 28 November 2014. The analysis results of groundwater have shown that the radioactive levels of sampled water have been substantially below the operational targets.