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Fukushima Daiichi Status Updates
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.?
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.?
Close x Read Update →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.
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.
Close x Read Update →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.
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.
Close x Read Update →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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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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Close x Read Update →On 2 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 24 to 30 August 2014 at the sampling points T-1 and T-2-1. The NRA also provided an update onsea 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.
On 2 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 24 to 30 August 2014 at the sampling points T-1 and T-2-1. The NRA also provided an update onsea 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.
Close x Read Update →On 26 August 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 17 to 23 August 2014 at the sampling points T-1 and T-2-1. The NRA also provided an update onsea 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.
On 26 August 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 17 to 23 August 2014 at the sampling points T-1 and T-2-1. The NRA also provided an update onsea 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.
Close x Read Update →On 6 August 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 27 July to 2 August from measurements obtained at the sampling points T-1 and T-2-1. The Nuclear Regulatory Authority (NRA) of Japan 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.
NRA additionally provided a?news release?regarding TEPCO's fuel removal activities at the Unit 4 spent fuel pool at the Fukushima NPS.
On 6 August 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 27 July to 2 August from measurements obtained at the sampling points T-1 and T-2-1. The Nuclear Regulatory Authority (NRA) of Japan 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.
NRA additionally provided a?news release?regarding TEPCO's fuel removal activities at the Unit 4 spent fuel pool at the Fukushima NPS.
Close x Read Update →On 4 August 2014, Japan provided the IAEA with?corrected values?for sea area monitoring measurements previously submitted by TEPCO.
The corrected data covers 17 reports on detection limits for total alpha measurements in seawater obtained at the sampling points T-1 and T-2-1 that were submitted between November 2013 and March 2014.
On 4 August 2014, Japan provided the IAEA with?corrected values?for sea area monitoring measurements previously submitted by TEPCO.
The corrected data covers 17 reports on detection limits for total alpha measurements in seawater obtained at the sampling points T-1 and T-2-1 that were submitted between November 2013 and March 2014.
Close x Read Update →On 29 July 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 21 to 26 July 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.
TEPCO has also published two news postings on its website. The?first one?is related to recent stories in the media with concerns about the soundness of the storage tanks on site and the?second one?is a reaction related to a report from the U.S. National Academy of Sciences.
On 29 July 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 21 to 26 July 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.
TEPCO has also published two news postings on its website. The?first one?is related to recent stories in the media with concerns about the soundness of the storage tanks on site and the?second one?is a reaction related to a report from the U.S. National Academy of Sciences.
Close x Read Update →?
On 22 July 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 13 to 20 July 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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On 22 July 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 13 to 20 July 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.
Close x Read Update →?
On 9 July 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 29 June to 5 July 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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On 9 July 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 29 June to 5 July 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.
Close x Read Update →?
On 1 July 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 22 to 28 June 2014 at the sampling points T-1 and T-2-1. The NRA also provided an update on the 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 1 July 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 22 to 28 June 2014 at the sampling points T-1 and T-2-1. The NRA also provided an update on the 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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Close x Read Update →On 24 June 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 21 June 2014 at the sampling points T-1 and T-2-1. TEPCO additionally reported to the NRA that it discharged 833 tonnes, 1563 tonnes, 1443 tonnes and 1765 tonnes of groundwater on 2, 8, 14 and 20 June respectively at Fukushima NPS to the ocean by means of the groundwater bypass system.
The NRA also provided an update on the?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.
On 24 June 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 21 June 2014 at the sampling points T-1 and T-2-1. TEPCO additionally reported to the NRA that it discharged 833 tonnes, 1563 tonnes, 1443 tonnes and 1765 tonnes of groundwater on 2, 8, 14 and 20 June respectively at Fukushima NPS to the ocean by means of the groundwater bypass system.
The NRA also provided an update on the?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.
Close x Read Update →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.
In general, it is expected that the situation onsite will remain very challenging as the recovery operations progress. Based on the information that has been made available, the IAEA considers that all members of the public are safe and that the food supply is safe and is being appropriately managed.
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.
The report can be accessed?here.
On 20 June 2014, Japan provided the IAEA with updated information in a report dated 11 June 2014 on the monitoring of air dose rates around the "road/its adjacent area and vacant land lot" at Fukushima Daiichi after the nuclear power plant accident. The report can be accessed?here.
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.
In general, it is expected that the situation onsite will remain very challenging as the recovery operations progress. Based on the information that has been made available, the IAEA considers that all members of the public are safe and that the food supply is safe and is being appropriately managed.
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.
The report can be accessed?here.
On 20 June 2014, Japan provided the IAEA with updated information in a report dated 11 June 2014 on the monitoring of air dose rates around the "road/its adjacent area and vacant land lot" at Fukushima Daiichi after the nuclear power plant accident. The report can be accessed?here.
Close x Read Update →On 17 June 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 8 to 14 June 2014 at the sampling points T-1 and T-2-1. These sampling points near Fukushima NPS are sentinels to assess effects on the environment by incidents including a leakage of contaminated water.
The Nuclear Regulation Authority (NRA) also provided an update on the?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.
On 17 June 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 8 to 14 June 2014 at the sampling points T-1 and T-2-1. These sampling points near Fukushima NPS are sentinels to assess effects on the environment by incidents including a leakage of contaminated water.
The Nuclear Regulation Authority (NRA) also provided an update on the?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.
Close x Read Update →On 11 June 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 highlights two reports submitted by TEPCO to the NRA regarding water leaks from top notch tanks to the dike surrounding these tanks at the Fukushima Daiichi NPS. The first TEPCO report on 2 June 2014 states that it stopped the water leaks from the top notch tanks and transferred 4 cubic metre of water remaining in a dike to another tank. The second TEPCO report, on 9 June 2014, states that the amount of water leaked from the two top notch tanks through the dike to the ground surface was estimated to be approximately 3.4 cubic metres at most.
Taking into account all information related to the water leaks thus far, the NRA considers the effects of water leaks to the sea area are unlikely to appear.
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.
On 11 June 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 highlights two reports submitted by TEPCO to the NRA regarding water leaks from top notch tanks to the dike surrounding these tanks at the Fukushima Daiichi NPS. The first TEPCO report on 2 June 2014 states that it stopped the water leaks from the top notch tanks and transferred 4 cubic metre of water remaining in a dike to another tank. The second TEPCO report, on 9 June 2014, states that the amount of water leaked from the two top notch tanks through the dike to the ground surface was estimated to be approximately 3.4 cubic metres at most.
Taking into account all information related to the water leaks thus far, the NRA considers the effects of water leaks to the sea area are unlikely to appear.
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.
Close x Read Update →On 3 June 2014, Japan provided the IAEA with?information?that TEPCO has discharged 641 tonnes of groundwater at the Fukushima Daiichi Nuclear Power Station (NPS) to the ocean on 27 May 2014 by means of the groundwater bypass system.
The update further provides measurements of seawater obtained at the sampling points T-1 and T-2-1 on 25 to 31 May 2014. The groundwater discharge had no recognizable effect in these measurement.
The NRA also provided an update of?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.
On 3 June 2014, Japan provided the IAEA with?information?that TEPCO has discharged 641 tonnes of groundwater at the Fukushima Daiichi Nuclear Power Station (NPS) to the ocean on 27 May 2014 by means of the groundwater bypass system.
The update further provides measurements of seawater obtained at the sampling points T-1 and T-2-1 on 25 to 31 May 2014. The groundwater discharge had no recognizable effect in these measurement.
The NRA also provided an update of?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.
Close x Read Update →On 30 May 2014, Japan provided the IAEA with an?announcement?it had sent to embassies, consular posts and international organizations in Japan that groundwater at the Fukushima Daiichi NPS will be released for the third time on 2 June 2014.
TEPCO also announced the detailed analysis results of groundwater which is planned to be released on 2 June 2014. All these results show that the radioactive levels of sampled water are substantially below the operational targets. Each target is set by TEPCO and these operational targets are set at very low level compared to the legal discharge limits.
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On 30 May 2014, Japan provided the IAEA with an?announcement?it had sent to embassies, consular posts and international organizations in Japan that groundwater at the Fukushima Daiichi NPS will be released for the third time on 2 June 2014.
TEPCO also announced the detailed analysis results of groundwater which is planned to be released on 2 June 2014. All these results show that the radioactive levels of sampled water are substantially below the operational targets. Each target is set by TEPCO and these operational targets are set at very low level compared to the legal discharge limits.
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Close x Read Update →On 28 May 2014, Japan provided the IAEA with a?message?that TEPCO has transferred 836 out of 1?533 spent and new fuel assemblies that were stored in the Unit 4 spent fuel pool to the common spent fuel pool on the site on 13 May 2014.
The initial transfer count has been updated by TEPCO and they are presently at 924 of 1?533 assemblies as reported on its?web site.
On 28 May 2014, Japan provided the IAEA with a?message?that TEPCO has transferred 836 out of 1?533 spent and new fuel assemblies that were stored in the Unit 4 spent fuel pool to the common spent fuel pool on the site on 13 May 2014.
The initial transfer count has been updated by TEPCO and they are presently at 924 of 1?533 assemblies as reported on its?web site.
Close x Read Update →On 27 May 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 TEPCO has reported to the Nuclear Regulation Authority (NRA) that it discharged 561 tonnes of groundwater to the ocean by means of the groundwater bypass system on 21 May 2014. TEPCO also reported to the NRA that it discharged 641 tonnes of groundwater to the ocean on 27 May 2014. The update further provides measurements of seawater obtained at the sampling points T-1 and T-2-1 on 22 to 24 May which are taken at early morning every day. The effects of groundwater discharge had no recognizable effect in these measurement.
The NRA also provided an update of?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.
On 27 May 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 TEPCO has reported to the Nuclear Regulation Authority (NRA) that it discharged 561 tonnes of groundwater to the ocean by means of the groundwater bypass system on 21 May 2014. TEPCO also reported to the NRA that it discharged 641 tonnes of groundwater to the ocean on 27 May 2014. The update further provides measurements of seawater obtained at the sampling points T-1 and T-2-1 on 22 to 24 May which are taken at early morning every day. The effects of groundwater discharge had no recognizable effect in these measurement.
The NRA also provided an update of?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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