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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 (September, 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

September 23, 2014 Detailed Analysis Results in the Port of Fukushima Daiichi NPS, around Discharge Channel and Bank Protection
September 22, 2014 Detailed Analysis Results in the Port of Fukushima Daiichi NPS, around Discharge Channel and Bank Protection
September 20, 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)

September 23, 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)
September 21, 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)
September 20, 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)

September 23, 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)
September 21, 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)
September 20, 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)

September 20, 2014 Sampling Results of Pump Wells of the Groundwater Bypass at Fukushima Daiichi Nuclear Power Station
September 17, 2014 Sampling Results of Pump Wells of the Groundwater Bypass at Fukushima Daiichi Nuclear Power Station
September 13, 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)

September 23, 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)
September 22, 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)
September 21, 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

September 23, 2014 Analysis Results of Rainwater Obtained Inside the Dike at the Tank Area After Treated by the Rainwater Treatment System
September 20, 2014 Analysis Results of Rainwater Obtained Inside the Dike at the Tank Area After Treated by the Rainwater Treatment System
September 19, 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

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Detailed Analysis Results of Groundwater Obtained around Unit 1 to 4

September 16, 2014 Detailed Analysis Results of Groundwater Obtained around Unit 1-4 Building at Fukushima Daiichi Nuclear Power Station
September 11, 2014 Detailed Analysis Results of Groundwater Obtained around Unit 1-4 Building at Fukushima Daiichi Nuclear Power Station
September 9, 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

September 23, 2014 Nuclide Analysis Results of the Underground Reservoirs/Underground Bypass and the Sea Side Observation Holes (As of September 22)
September 22, 2014 Underground Reservoir Nuclide Analysis Results (As of September 21)
September 21, 2014 Underground Reservoir Nuclide Analysis Results (As of September 20)

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Other

September 22, 2014 Analysis results of temporary storage tanks for groundwater bypass at Fukushima Daiichi Nuclear Power StationSampling Results Regarding the Discharge of Groundwater Bypass at Fukushima Daiichi Nuclear Power Station (Around South Water Outlet)
September 19, 2014 Seawater collected in offshore area of Miyagi Prefecture
September 17, 2014 Analysis results of temporary storage tanks for groundwater bypass at Fukushima Daiichi Nuclear Power Station
September 16, 2014 Sampling Results Regarding the Discharge of Groundwater Bypass at Fukushima Daiichi Nuclear Power Station (Around South Water Outlet)
September 12, 2014 Seawater collected in offshore area of Miyagi Prefecture
September 10, 2014 Sampling Results Regarding the Discharge of Groundwater Bypass at Fukushima Daiichi Nuclear Power Station (Around South Water Outlet)
September 5, 2014 Sampling Results Regarding the Discharge of Groundwater Bypass at Fukushima Daiichi Nuclear Power Station (Around South Water Outlet)
September 1, 2014 Sampling Results Regarding the Discharge of Groundwater Bypass at Fukushima Daiichi Nuclear Power Station (Around South Water Outlet) Seawater collected in offshore area of Ibaraki Prefecture

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.

September 10, 2014 Definite Results of Nuclides Analysis at Fukushima Daiichi Nuclear Power Station (Announced on August 1 - 15, 2014)

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

September 18, 2014 Nuclide Analysis Results of Fish and Shellfish (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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