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Decommissioning Plan of Fukushima Daiichi Nuclear Power > Plan & Action > Monitoring by sampling

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Monitoring by sampling

Result of Radioactive Analysis around Fukushima Daiichi Nuclear Power Station

Results of radioactive nuclide analysis are published for the sample for below items in the power station and its surrounding area.
* During weekends and national holidays, updates will be provided in Japanese only.

Analysis results of radioactive materials obtained at each sampling location

map
1.Seawater(Area around the Outside of the Port) 2.Seawater(Inside of the Port) 3.Seawater(Inside of Unit 1-4 Water Intake Channel) 4.Groundwater(Unit 1-4 Bank Protection) 5.Groundwater Obtained around the H4 area 6.Obtained in Drainage Channels around the H4 area and the B area

Related Links
Monitoring information of environmental radioactivity level (the Nuclear Regulation Authority)

Prompt Report of Result of Analysis (August, 2014)

The day colored dates in this calender indicate the latest updated dates.

in the Air at the Site of Power Station

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Result of radioactive nuclide analysis for the air sampled in the power station.

Seawater near Power Station

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CSV
Coast
Result of radioactive nuclide analysis for the seawater sampled on and offshore of the power station.

in Seawater taken near Intake Canal of Power Station

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CSV
Around water intake channel
Result of radioactive nuclide analysis for the seawater sampled at near the intake canal of unit 1 to 4 of the power station.

Subsurface Water near the Turbine Buildings

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Result of radioactive nuclide analysis for the water sampled from the sub drain around turbine buildings of unit 1 to 6.

Sub-drain Water in the Surroundings of Centralized Radiation Waste Treatment Facility

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Result of radioactive nuclide analysis for the water sampled from the sub drain around centralized waste treatment facility.

Monitoring at the East Side of Unit 1-4 Turbine Buildings

August 28, 2014 Detailed Analysis Results in the Port of Fukushima Daiichi NPS, around Discharge Channel and Bank Protection
August 27, 2014 Detailed Analysis Results in the Port of Fukushima Daiichi NPS, around Discharge Channel and Bank Protection
August 26, 2014 Detailed Analysis Results in the Port of Fukushima Daiichi NPS, around Discharge Channel and Bank Protection

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Results of radioactive nuclide analysis are published for the samples of groundwater at the east side of Unit 1-4 Turbine Buildings and seawater at the port in order to monitor the source and the extent of the radioactive materials in the groundwater, and whether the materials included in groundwater affect the sea.

Monitoring Regarding the Water Leak at Tank (South Water Outlet, Drainage Channel)

August 29, 2014 Sampling Results Regarding the Water Leak at the Tanks in the H4 area in Fukushima Daiichi Nuclear Power Station (South Water Outlet, Drainage Channel)
August 28, 2014 Sampling Results Regarding the Water Leak at the Tanks in the H4 area in Fukushima Daiichi Nuclear Power Station (South Water Outlet, Drainage Channel)
August 27, 2014 Sampling Results Regarding the Water Leak at the Tanks in the H4 area in Fukushima Daiichi Nuclear Power Station (South Water Outlet, Drainage Channel)

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Monitoring Regarding the Water Leak at Tank (Observation Hole around the H4 Area)

August 28, 2014 Sampling Results Regarding the Influence on the Water Leak at a Tank in the H4 area in Fukushima Daiichi Nuclear Power Station (Around the H4 Area) (2)
August 28, 2014 Sampling Results Regarding the Influence on the Water Leak at a Tank in the H4 area in Fukushima Daiichi Nuclear Power Station (Around the H4 Area)
August 27, 2014 Sampling Results Regarding the Influence on the Water Leak at a Tank in the H4 area in Fukushima Daiichi Nuclear Power Station (Around the H4 Area)

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Investigation of Impact on the Groundwater Bypass Regarding the Water Leak at Tank (Pump Well)

August 27, 2014 Sampling Results of Pump Wells of the Groundwater Bypass at Fukushima Daiichi Nuclear Power Station
August 26, 2014 Sampling Result of Pump Well No.12 of the Groundwater Bypass at Fukushima Daiichi NPS
August 23, 2014 Sampling Results of Pump Wells of the Groundwater Bypass at Fukushima Daiichi Nuclear Power Station

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Monitoring Regarding the Water Leak at Tank (Observation Hole around the H6 Area)

August 29, 2014 Sampling Results Regarding the Influence on the Water Leak at a Tank in the H6 area in Fukushima Daiichi Nuclear Power Station (Around the H6 Area)
August 28, 2014 Sampling Results Regarding the Influence on the Water Leak at a Tank in the H6 area in Fukushima Daiichi Nuclear Power Station (Around the H6 Area)
August 27, 2014 Sampling Results Regarding the Influence on the Water Leak at a Tank in the H6 area in Fukushima Daiichi Nuclear Power Station (Around the H6 Area)

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Analysis Results of Rainwater Obtained Inside the Dike at the Tank Area After Treated by the Rainwater Treatment System

August 29, 2014 Radioactive Material Density in the Air at the Place Where Rainwater Obtained Inside the Dike at the Tank Area After Treated by the Rainwater Treatment System is Sprinkled and Ambient Dose Rate at the Surrounding Area
August 29, 2014 Analysis Results of Rainwater Obtained Inside the Dike at the Tank Area After Treated by the Rainwater Treatment System
August 28, 2014 Analysis Results of Rainwater Obtained Inside the Dike at the Tank Area After Treated by the Rainwater Treatment System

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Detailed Analysis Results of Groundwater Obtained around Unit 1 to 4

August 25, 2014 Detailed Analysis Results of Groundwater Obtained around Unit 1-4 Building at Fukushima

Radioactive material was detected from the accumulated water inside the pit as a result of purification test at a well (sub-drain pit), which is adjacent to Unit 1-4 Buildings at Fukushima Daiichi Nuclear Power Station. Since there is a possibility that the water was affected by fallout, we installed new observation well around Unit 1-4 Buildings in order to assess the impact of fallout.

Nuclide Analysis Results of the Underground Reservoirs

August 29, 2014 Nuclide Analysis Results of the Underground Reservoirs/Underground Reservoirs Observation Holes (As of August 28)
August 28, 2014 Underground Reservoir Tritium Analysis Results (As of August 20)
August 28, 2014 Underground Reservoir Nuclide Analysis Results (As of August 27)

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Other

August 27, 2014 Seawater collected in offshore area of Miyagi Prefecture
August 26, 2014 Sampling Results Regarding the Discharge of Groundwater Bypass at Fukushima Daiichi Nuclear Power Station (Around South Water Outlet)
August 22, 2014 Nuclide Analysis of the Radioactive Materials in the Fallouts obtained inside and outside of Fukushima Daiichi Nuclear Power Station
August 21, 2014 Sampling Results Regarding the Discharge of Groundwater Bypass at Fukushima Daiichi Nuclear Power Station (Around South Water Outlet)
August 20, 2014 in the soil
August 15, 2014 in the ocean soil off the coast (Dry Soil Rate : July 2014)
August 14, 2014 Sampling Results Regarding the Discharge of Groundwater Bypass at Fukushima Daiichi Nuclear Power Station (Around South Water Outlet)
August 8, 2014 Seawater collected in offshore area of Ibaraki and Miyagi Prefecture Seawater collected in offshore area of Miyagi Prefecture in the soil in the ocean soil off the coast
August 4, 2014 Sampling Results Regarding the Discharge of Groundwater Bypass at Fukushima Daiichi Nuclear Power Station (Around South Water Outlet)

Confirmed Results of Analysis

Analysis results of the major 3 nuclides (I-131, Cs-134, Cs-137) are being announced as flash report on a daily basis.
With regard to reevaluation of the major 3 nuclides and analysis results of γ nuclides except for the major 3 nuclides are being announced as definite report.

August 29, 2014 For updated from July 16 to July 31
August 5, 2014 For updated from July 1 to July 15

Seawater taken from Unit 1 to 4 side of South Discharge Channel (August, 2014)

The day colored dates in this calender indicate the latest updated dates.

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Nuclide analysis is in operation on the radioactive materials in the water sampled near the South Discharge Channel (approximately 330m south of Unit 1-4 side of the South Discharge Channel) in response to the leaked water from the pipeline connecting from Desalination System (Reverse Osmosis Membrane) to Concentrated Water Storage Tank (occurred on March 26 and April 5, 2012).

* The sampling location has been changed on November 26, 2012. (Sampling is performed at approx. 1km south of the previous location.)

Analysis Results of Water at Water Treatment Facility

The newest data is on May 30, 2014.

Analysis Results of Fish and Shellfish(The Ocean Area Within 20km Radius of Fukushima Daiichi NPS)

August 15, 2014 Nuclide Analysis Results of Fish and Shelfish (inner port of Fukushima Daiichi Nuclear Power Station) Nuclide Analysis Results of Fish and Shellfish (The Ocean Area Within 20km Radius of Fukushima Daiichi NPS)(excl. inner port area)

Archives

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* Please click here for the archives before Dec 22, 2011.