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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 (October, 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

October 23, 2014 Detailed Analysis Results in the Port of Fukushima Daiichi NPS, around Discharge Channel and Bank Protection
October 22, 2014 Detailed Analysis Results in the Port of Fukushima Daiichi NPS, around Discharge Channel and Bank Protection
October 21, 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)

October 24, 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)
October 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)
October 22, 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)

October 24, 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)
October 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)
October 22, 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)

October 22, 2014 Sampling Results of Pump Wells of the Groundwater Bypass at Fukushima Daiichi Nuclear Power Station
October 18, 2014 Sampling Results of Pump Wells of the Groundwater Bypass at Fukushima Daiichi Nuclear Power Station
October 15, 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)

October 24, 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)
October 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)
October 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)

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

October 24, 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
October 24, 2014 Analysis Results of Rainwater Obtained Inside the Dike at the Tank Area After Treated by the Rainwater Treatment System
October 22, 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

October 1, 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

October 25, 2014 Underground Reservoir Nuclide Analysis Results (As of October 24)
October 24, 2014 Nuclide Analysis Results of the Underground Reservoir/Underground Reservoir Observation Holes (As of October 23)
October 23, 2014 Underground Reservoir Tritium Analysis Results (As of October 15)

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Other

October 24, 2014 Nuclide Analysis of the Radioactive Materials in the Fallouts obtained inside and outside of Fukushima Daiichi Nuclear Power Station
October 23, 2014 Seawater collected in offshore area of Ibaraki and Miyagi Prefecture
October 22, 2014 Summary of Marine Soil Monitoring Result : Fukushima Daiichi Nuclear Power Station (September, 2014)Analysis results of temporary storage tanks for groundwater bypass at Fukushima Daiichi Nuclear Power Station
October 21, 2014 Seawater collected in offshore area of Miyagi Prefecturein the soil
October 17, 2014 in the soilin the ocean soil off the coastAnalysis results of temporary storage tanks for groundwater bypass at Fukushima Daiichi Nuclear Power Station
October 12, 2014 Analysis results of temporary storage tanks for groundwater bypass at Fukushima Daiichi Nuclear Power Station
October 10, 2014 Sampling Results Regarding the Discharge of Groundwater Bypass at Fukushima Daiichi Nuclear Power Station (Around South Water Outlet)
October 7, 2014 Seawater collected in offshore area of Ibaraki Prefecture Analysis results of temporary storage tanks for groundwater bypass at Fukushima Daiichi Nuclear Power Station
October 6, 2014 Sampling Results Regarding the Discharge of Groundwater Bypass at Fukushima Daiichi Nuclear Power Station (Around South Water Outlet)
October 3, 2014 Summary of Marine Soil Monitoring Result : Fukushima Daiichi Nuclear Power Station (August, 2014)
October 2, 2014 Results of weighted average sample of temporary storage tanks for groundwater bypass at Fukushima Daiichi Nuclear Power Station Detailed analysis results of temporary storage tanks for groundwater bypass at Fukushima Daiichi Nuclear Power Station Analysis results of temporary storage tanks for 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.

October 24, 2014 Definite Results of Nuclides Analysis at Fukushima Daiichi Nuclear Power Station (Announced on September 16 - 30, 2014)
October 8, 2014 Definite Results of Nuclides Analysis at Fukushima Daiichi Nuclear Power Station (Announced on September 1 - 15, 2014)

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

October 17, 2014 Analyzed result of nuclide in fish < Inner port in Fukushima Daiichi NPS> Nuclide Analysis Results of Fish and Shellfish (The Ocean Area Within 20km Radius of Fukushima Daiichi NPS)(excluding inside the port)

Archives

* Please click here for the archives from Dec 23, 2011 to Sep 30, 2014.
* Please click here for the archives before Dec 22, 2011.