Fukushima Daiichi Status Updates

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.

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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.

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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.

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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.

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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).

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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.

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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).

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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.

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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.

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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.

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25 November 2014

On 25 November 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).

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On 25 November 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 16 to 23 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.

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20 November 2014

The Japanese Government has provided the IAEA with a report that summarizes the events and highlights the progress related to recovery operations at the Fukushima Daiichi Nuclear Power Station. The IAEA has provided its assessments which is contained in full at the end of the report.

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The Japanese Government has provided the IAEA with a report that summarizes the events and highlights the progress related to recovery operations at the Fukushima Daiichi Nuclear Power Station. The IAEA has provided its assessments which is contained in full at the end of the report.

Based on the sea area monitoring results and on other related information that has been made available, the IAEA considers the situation in the marine environment to be stable but should continue to be monitored.

Regarding the removal of spent fuel assemblies from Unit 4 that was completed by 5 November 2014, the IAEA acknowledges TEPCO's continuing efforst to undertake the work in a safe and steady manner and encourages TEPCO to keep implementing its good practices in decomissioning of the Fukushima Daiichi Nuclear Power Plant, with the highest priority to be placed on the safety of the public, workers and the environment.

As for the addition of water treatment systems, the IAEA considers that TEPCO's efforts are in line with the advice given by the IAEA review mission on decommissioning in late 2013, and that the improvement of treatment capacity will contribute to accelerating the treatment of the large volume of contaminated water stored on site. The IAEA also encourages TEPCO to continue its practices to further enhance the performance and capacity of the water treatment systems to address the contaminated water problem in a sustainable manner and to reduce the associated risks.

Regarding the off-site decontamination, the IAEA notes that Japan has been making significant efforts in the environmental remediation activities, together with the reconstruction of the infrastructure and the rehabilitation of the local communities to facilitate residents' return. The IAEA encourages Japan to continue its efforts in this regard. 

As for food products, the IAEA considers that systems are in place and are being implemented that prevent food and agricultural products with levels of caesium radionuclides in excess of the regulatory limits from entering the food supply chain. The revisions and updates to the food restrictions indicate the continued vigilance of the authorities in Japan and their commitment to protecting consumers and trade.  Based on the information that has been made available, the Joint FAO/IAEA Division understands that the measures taken to monitor and respond to issues regarding radionuclide contamination of food are appropriate and that the food supply chain is under control.

The Agency welcomes the Japanese Government's issuance of this information to the IAEA Member States and the public, detailing the current status of the recovery operations. The IAEA will continue to share such valuable information as it is provided.

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18 November 2014

On 18 November 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).

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On 18 November 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 9 to 15 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.

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12 November 2014

On 12 November 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).

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On 12 November 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 2 to 8 October 2014 at the sampling points T-1 and T-2-1.

The update also reports on a recent visit by experts from the IAEA Environment Laboratory in Monaco  who presented the results of an inter-laboratory comparison study of samples collected in September 2014 in the coastal waters near the Fukushima Daiichi NPS. On 5 and 6 November 2014, the IAEA experts together with NRA staff collected water samples from the sea at the same five locations where water samples were previously collected. More information can be found here.

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.

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5 November 2014

On 5 November 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 NPS during September and October 2014.

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On 5 November 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 Fukushima Daiichi NPS during September and October 2014. The analysis results of groundwater have shown that the radioactive levels of sampled water have been substantially below the operational targets.

Additionally, Japan's Nuclear Regulatory Authority (NRA) provided the IAEA with a news release from TEPCO on fuel removal from Unit 4 spent fuel pool at the Fukushima Daiichi Nuclear Power Station. This news release is an update to a previous one released on 6 August 2014.

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4 November 2014

On 4 November 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).

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On 4 November 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 26 October to 2 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.

Additionally, the NRA provided the IAEA with an interim report on ongoing mid- and long-tem analysis of the TEPCO Fukushima Daiichi NPS accident. It covers various issues including those raised in the reports by the National Diet Investigation Commission, the Government Investigation Committee, the Non-governmental Investigation Committee, and TEPCO Investigation Committee. This report is the first one and the NRA will continue to submit additional reports based on the progress of the investigation and review.

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29 October 2014

On 29 October 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).

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On 29 October 2014, the Nuclear Regulation Authority (NRA) of Japan provided the IAEA with an update 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 19 to 25 October 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.

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21 October 2014

On 21 October 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).

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On 21 October 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 12 to 19 October 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 kilometers from TEPCO's Fukushima Daiichi NPS.

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14 October 2014

On 14 October 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).

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On 14 October 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 5 to 12 October 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 kilometers from TEPCO's Fukushima Daiichi NPS.

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7 October 2014

On 7 October 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).

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On 7 October 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 28 September to 4 October 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 kilometers from TEPCO's Fukushima Daiichi NPS.

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30 September 2014

On 30 September 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).

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On 30 September 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 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 kilometers from TEPCO's Fukushima Daiichi NPS.

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24 September 2014

On 24 September 2014, Japan provided the IAEA with an update to current information on radioactivity in seawater at TEPCO's Fukushima Daiichi Nuclear Power Station (NPS).

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On 24 September 2014, Japan provided the IAEA with an update to current information on radioactivity in seawater at TEPCO's Fukushima Daiichi Nuclear Power Station (NPS).

The update shows that all radionuclides (i.e. Cs-134, Cs-137, total Beta and H-3) have remained low and stable from 15 to 20 September 2014 at the sampling points T-1 and T-2-1. The NRA also 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.

Japan's NRA has also provided the Agency with a news release on an incident involving a crack in a connection valve between tanks for concentrated water that TEPCO has reported on 17 September 2014. 

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22 September 2014

The Japanese Government has provided the IAEA with a report that summarizes the events and highlights the progress related to recovery operations at the Fukushima Daiichi Nuclear Power Station. The IAEA has provided its assessments which is contained in full at the end of the report.

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The Japanese Government has provided the IAEA with a report that summarizes the events and highlights the progress related to recovery operations at the Fukushima Daiichi Nuclear Power Station. The IAEA has provided its assessments which is contained in full at the end of the report.

Based on the sea area radioactivity monitoring results in all five areas and other related information that has been made available, the IAEA considers that the situation in the marine environment is stable but should continue to be monitored.

The IAEA considers that the multi-layered countermeasures could contribute to reducing the risks associated with groundwater ingress into the basement of the buildings, the continued accumulation of contaminated water to be treated and stored on site and the uncontrolled discharge of radioactivity into the sea.

Based on the information made available, the IAEA acknowledges that TEPCO is making progress towards achieving completion of the spent fuel removal from Unit 4 in line with the targeted schedule.

The IAEA considers that systems are in place and are being implemented that prevent food and agricultural products with levels of caesium radionuclides in excess of the legal limits from entering the food supply chain.

The Agency welcomes the Japanese Government's issuance of this information to the IAEA Member States and the public, detailing the current status of the recovery operations. The IAEA will continue to share such valuable information as it is provided.

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16 September 2014

On 16 September 2014, Japan provided the IAEA with an update to current information on radioactivity in seawater at TEPCO's Fukushima Daiichi Nuclear Power Station (NPS).

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On 16 September 2014, Japan provided the IAEA with an update to current information on radioactivity in seawater at TEPCO's Fukushima Daiichi Nuclear Power Station (NPS).

The update shows that all radionuclides (i.e. Cs-134, Cs-137, total Beta and H-3) have remained low and stable from 7 to 14 September 2014 at the sampling points T-1 and T-2-1. The NRA also 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.

Also on 10 September 2014, the Government of Japan held a briefing session for diplomatic missions and international organizations in Japan providing updates regarding TEPCO's Fukushima Daiichi NPS. The briefing material has been made available to the public here.

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9 September 2014

On 9 September 2014, Japan provided the IAEA with an update to current information on radioactivity in seawater at TEPCO's Fukushima Daiichi Nuclear Power Station (NPS).

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On 9 September 2014, Japan provided the IAEA with an update to current information on radioactivity in seawater at TEPCO's Fukushima Daiichi Nuclear Power Station (NPS).

The update shows that all radionuclides (i.e. Cs-134, Cs-137, total Beta and H-3) have remained low and stable from 31 August to 6 September 2014 at the sampling points T-1 and T-2-1. The NRA also 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.

 

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Last update: 19 December 2014