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.
Prompt Report of Result of Analysis (March, 2014)
in the Air at the Site of Power Station
Result of radioactive nuclide analysis for the air sampled in the power station.
Seawater near Power Station
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
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
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
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
- March 31, 2014
- Detailed Analysis Results in the Port of Fukushima Daiichi NPS, around Discharge Channel and Bank Protection
- March 29, 2014
- Detailed Analysis Results in the Port of Fukushima Daiichi NPS, around Discharge Channel and Bank Protection
- March 28, 2014
- Detailed Analysis Results in the Port of Fukushima Daiichi NPS, around Discharge Channel and Bank Protection
Display and non-display of article in the past
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)
- March 31, 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)
- March 30, 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)
- March 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)
Display and non-display of article in the past
Monitoring Regarding the Water Leak at Tank (Observation Hole around the H4 Area)
- March 31, 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)
- March 30, 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)
- March 29, 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)
Display and non-display of article in the past
Investigation of Impact on the Groundwater Bypass Regarding the Water Leak at Tank (Pump Well)
- March 27, 2014
- Sampling Results Regarding the Influence on the Water Leak at a Tank in the H4 area in Fukushima Daiichi Nuclear Power Station (Pump Well)
- March 20, 2014
- Sampling Results Regarding the Influence on the Water Leak at a Tank in the H4 area in Fukushima Daiichi Nuclear Power Station (Pump Well)
- March 13, 2014
- Sampling Results Regarding the Influence on the Water Leak at a Tank in the H4 area in Fukushima Daiichi Nuclear Power Station (Pump Well)
Display and non-display of article in the past
Monitoring Regarding the Water Leak at Tank (Observation Hole around the H6 Area)
- March 31, 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)
- March 30, 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)
- March 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)(2)
Display and non-display of article in the past
Detailed Analysis Results of Groundwater Obtained around Unit 1 to 4
- March 28, 2014
- Detailed Analysis Results of Groundwater Obtained around Unit 1-4 Building at Fukushima Daiichi Nuclear Power Station
- March 6, 2014
- Detailed Analysis Results of Groundwater Obtained around Unit 1-4 Building at Fukushima Daiichi Nuclear Power Station
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
- March 31, 2014
- Underground Reservoir Nuclide Analysis Results (As of March 30)
- March 30, 2014
- Underground Reservoir Nuclide Analysis Results (As of March 29)
- March 29, 2014
- Underground Reservoir Nuclide Analysis Results (As of March 28)
Display and non-display of article in the past
Other
- March 28, 2014
- Nuclides Analysis Result of the Radioactive Materials in the Air at the Opening of Buildings at Fukushima Daiichi NPS (1)
- Nuclides Analysis Result of the Radioactive Materials in the Air at the Opening of Buildings at Fukushima Daiichi NPS (2)
- Nuclide Analysis of the Radioactive Materials in the Fallouts obtained inside and outside of Fukushima Daiichi Nuclear Power Station
- in the ocean soil off the coast
- in the Soil
- Nuclide Analysis Result of the Seabed Soil Inside and Outside the Port of Fukushima Daiichi NPS
- Nuclides Analysis Result of Radioactive Materials in the Seawater
- March 26, 2014
- Seawater collected in offshore area of Miyagi Prefecture
- March 25, 2014
- Seawater collected in offshore area of Ibaraki Prefecture
- in the ocean soil off the coast
- in the Soil
- March 20, 2014
- Seawater collected in offshore area of Miyagi Prefecture
- March 19, 2014
- Nuclides Analysis Result of the Radioactive Materials in the Air at the Upper Part of Unit 1 Reactor Building
- Nuclides Analysis Result of the Radioactive Materials in the Air at the Ventilation facility of Unit 2 Reactor Building in Fukushima Daiichi Nuclear Power Station
- Nuclides Analysis Result of the Radioactive Materials in the Air at the Upper Part of Unit 3 Reactor Building
- Nuclides Analysis Result of the Radioactive Materials in the Air at the Upper Part of Unit 4 Reactor Building
- Gas Sampling Results of Unit 1 PCV Gas Control System Conducted at Fukushima Daiichi Nuclear Power Station
- Gas Sampling Results of Unit 2 PCV Gas Control System Conducted at Fukushima Daiichi Nuclear Power Station
- Gas Sampling Results of Unit 3 PCV Gas Control System Conducted at Fukushima Daiichi Nuclear Power Station
- Nuclides Analysis Result of the Radioactive Materials in the Air at the Opening of Buildings at Fukushima Daiichi NPS
- Nuclides Analysis Results of the Radioactive Materials in the Air at the Opening of Buildings at Fukushima Daiichi NPS
- in the soil
- in the ocean soil off the coast
- March 7, 2014
- Seawater collected in offshore area of Miyagi Prefecture
- Detailed Analysis Results Obtained in the Pump Wells of the Groundwater Bypass at Fukushima Daiichi Nuclear Power Station
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.
- March 27, 2014
- For updated from February 16 to February 28
- March 12, 2014
- For updated from February 1 to February 15
Seawater taken from Unit 1 to 4 side of South Discharge Channel (March, 2014)
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
- March 20, 2014
- Measurement results of radioactive density of water at water treatment facility
- March 4, 2014
- Measurement results of radioactive density of water at water treatment facility
Analysis Results of Fish and Shellfish(The Ocean Area Within 20km Radius of Fukushima Daiichi NPS)
- March 19, 2014
- Measurement result nuclide of fish < Inner port in Fukushima Daiichi NPS >
- Nuclide Analysis Results of Fish and Shellfish (The Ocean Area Within 20km Radius of Fukushima Daiichi NPS)
- March 7, 2014
- Nuclide Analysis Results of Fish and Shellfish (The Ocean Area Within 20km Radius of Fukushima Daiichi NPS)
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The recent data is here.