General Environment Around Us
Radioactivity measurement survey (radioactivity level survey)
A radioactivity survey that was conducted by the Secretariat of the Nuclear Regulation Authority (*1), entrusted to prefectural governments and the Japan Chemical Analysis Center, for the purpose of understanding the levels of environmental radioactivity.
(*1) The operations were transferred from the Science and Technology Agency to the Ministry of Education, Culture, Sports, Science and Technology (MEXT) in April 2000, and then from MEXT to the Secretariat of the Nuclear Regulation Authority in April 2013.
[Registered Survey Results]
1. Radioactivity survey on environmental samples
| FY | 1961- |
|---|---|
| Main samples | Airborne dust and atmosphere, fallout, rainfall, inland water, soil, sediments, agricultural, forestry, and fisheries products, milk, sea water, marine products, food, daily food |
| Main nuclides | Gross beta, H-3, Be-7, C-14, K-40, Kr-85, Sr-90, Tc-99, I-129, I-131, Xe-133, Cs-134, Cs-137, Ra-226, Th-232, U-234, U-235, U-238, Pu-238, Pu-239, Pu-239+240, Pu-241, Pu-240, Am-241, Cm-242, Cm-243+244 |
| Remarks | Survey results may not be available for some samples depending on the survey year, and data may not be available for some nuclides depending on the survey sample. |
2. Radiation in the environment
| FY | Cumulative dose | 1991-2005 |
|---|---|---|
| Monitoring post | 1968- | |
| Survey meter | 1963-2008 |
Radioactivity survey (Japan Coast Guard)
A radioactivity survey that was conducted by the Hydrographic and Oceanographic Department, Japan Coast Guard (*2), for the purpose of understanding the impact of nuclear tests, etc. on the marine environment.
(*2) Reorganized from Hydrographic Department, Japan Coast Guard to Hydrographic and Oceanographic Department, Japan Coast Guard in April 2002.
[Registered Survey Results]
1. Radioactivity survey on environmental samples
| FY | 1962- |
|---|---|
| Main samples | Sediments, sea water |
| Main nuclides | Co-60, Sr-90, Cs-134, Cs-137, Pu-239+240 |
| Remarks | Survey results may not be available for some samples depending on the survey year, and data may not be available for some nuclides depending on the survey sample. |
Radioactivity survey (Ministry of Agriculture, Forestry and Fisheries)
A radioactivity survey that was conducted by the National Research Institute of Fisheries Science, Japan Fisheries Research and Education Agency (*3) , for the purpose of verifying the safety of fishing grounds in the sea areas around Japan.
(*3) The Japan Fisheries Research and Education Agency was inaugurated in April 2016.
[Registered Survey Results]
1. Radioactivity survey on environmental samples
| FY | 1961- |
|---|---|
| Main samples | Soil, sediments, agricultural, forestry, and fisheries products, milk, marine products, specific products, etc. |
| Main nuclides | Be-7, K-40, Mn-54, Co-60, Sr-90, Ag-108m, Ag-110m, Cs-134, Cs-137, Ce-144 |
| Remarks | Survey results may not be available for some samples depending on the survey year, and data may not be available for some nuclides depending on the survey sample. |
Radioactivity survey (Japan Meteorological Agency)
A radioactivity survey that was conducted by the Meteorological Research Institute, Japan Meteorological Agency for the purpose of understanding the behavior and concentration distribution of radioactive materials in the atmosphere.
[Registered Survey Results]
1. Radioactivity survey on environmental samples
| FY | 1957- |
|---|---|
| Main samples | Airborne dust and atmosphere, fallout |
| Main nuclides | Sr-90, Cs-137 |
| Remarks | Survey results may not be available for some samples depending on the survey year, and data may not be available for some nuclides depending on the survey sample. |
Radioactivity survey (Ministry of Defense)
A radioactivity survey that was conducted by the Technical Research and Development Institute, Ministry of Defense, for the purpose of understanding the environmental contamination by radioactivity at high altitudes.
[Registered Survey Results]
1. Radioactivity survey on environmental samples
| FY | 1961- |
|---|---|
| Main samples | Airborne dust and atmosphere, inland water |
| Main nuclides | Gross beta, Sr-90, Cs-137 |
| Remarks | Survey results may not be available for some samples depending on the survey year, and data may not be available for some nuclides depending on the survey sample. |
Food sample radioactivity level survey
A radioactivity survey that was conducted by the Ministry of Education, Culture, Sports, Science and Technology (*4) , entrusted to the Japan Chemical Analysis Center, for the purpose of understanding the radioactivity concentration of food in circulation.
(*4) The operations were transferred from the Science and Technology Agency to the Ministry of Education, Culture, Sports, Science and Technology in April 2000.
[Registered Survey Results]
1. Radioactivity survey on environmental samples
| FY | 1989-2004 |
|---|---|
| Main samples | Agricultural, forestry, and fisheries products, milk, marine products, food |
| Main nuclides | C-14, K-40, Sr-90, Cs-137, Pb-210, Po-210, Ra-226, Th-228, Th-230, Th-232, U-234, U-235, U-238, Pu-239+240 |
| Remarks | Survey results may not be available for some samples depending on the survey year, and data may not be available for some nuclides depending on the survey sample. |
Radon concentration measurement survey
A radioactivity survey that was conducted by the Ministry of Education, Culture, Sports, Science and Technology (*5) , entrusted to the Japan Chemical Analysis Center, for the purpose of understanding the factors of variations in the radon concentration in the living environment.
(*5) The operations were transferred from the Science and Technology Agency to the Ministry of Education, Culture, Sports, Science and Technology in April 2000.
[Registered Survey Results and Financial Year]
| Radon concentration measurement survey | Indoors | 1993-1996, 2004-2007 |
|---|---|---|
| Outdoors | 1997-1999 | |
| Workplace environment | 2000-2002 | |
| Main samples | Atmosphere | |
| Main nuclides | Rn-222 | |
Kumejima environment survey
A radioactivity survey that was conducted by the Ministry of Education, Culture, Sports, Science and Technology (*6) , entrusted to the Japan Chemical Analysis Center, for the purpose of understanding the levels of environmental radioactivity at Kumejima and surrounding sea areas pertaining to the issue of misuse of depleted uranium ammunition.
(*6) The operations were transferred from the Science and Technology Agency to the Ministry of Education, Culture, Sports, Science and Technology in April 2000.
[Registered Survey Results]
1. Radioactivity survey on environmental samples
| FY | 1996-2001 |
|---|---|
| Main samples | Airborne dust and atmosphere, soil, sea water, marine products |
| Main nuclides | U, U-234, U-235, U-238 |
| Remarks | Survey results may not be available for some samples depending on the survey year, and data may not be available for some nuclides depending on the survey sample. |
2. Radiation in the environment
| FY | Survey meter | 1996-2001 |
|---|
Surroundings of Nuclear Facilities
Nuclear facility surroundings radiation monitoring
Radioactivity surveys that were conducted by the siting prefecture of nuclear power generation facilities, etc., and adjacent prefectures, for the purpose of monitoring the impact of radioactive materials released from the nuclear power generation facilities, etc., on the surroundings.
[Registered Survey Results]
1. Radioactivity survey on environmental samples
| FY | 1969- |
|---|---|
| Main samples | Airborne dust and atmosphere, fallout, rainfall, inland water, soil, sediments, agricultural, forestry, and fisheries products, milk, sea water, marine products, food |
| Main nuclides | Gross alpha, gross beta, H-3, C-14, F, K-40, Sr-90, I-131, Cs-134,Cs-137, Rn-222, Th-232, U-238, Pu-239+240 |
| Remarks | Survey results may not be available for some samples depending on the survey year, and data may not be available for some nuclides depending on the survey sample. |
2. Radiation in the environment
| FY | Cumulative dose | 1969- |
|---|---|---|
| Monitoring post | 1972- | |
| Survey meter | 1969- |
Marine radioactivity survey
A radioactivity survey that was conducted by the Secretariat of the Nuclear Regulation Authority (*7) , entrusted to the Marine Ecology Research Institute, etc. (*8) , for the purpose of understanding the levels of environmental radioactivity in major fishing grounds off the coast of nuclear facilities.
(*7) The operations were transferred from the Ministry of Education, Culture, Sports, Science and Technology to the Secretariat of the Nuclear Regulation Authority in April 2013.
(*8) The survey was also carried out by the Thermal Aquaculture Development Society of Japan during the period from 1972 to 2007.
[Registered Survey Results]
1. Radioactivity survey on environmental samples
| FY | 1972- |
|---|---|
| Main samples | Airborne dust and atmosphere, sediments, sea water, marine products, specific products, etc. |
| Main nuclides | Gross beta, H-3, K-40, Sr-90, I-129, Cs-134, Cs-137, Pu-239+240 |
| Remarks | Survey results may not be available for some samples depending on the survey year, and data may not be available for some nuclides depending on the survey sample. |
2. Radiation in the environment
| FY | Survey meter | 2010-2011 |
|---|
Nuclear Powered Warships
Radioactivity survey on nuclear powered warships (periodic survey)
A survey that was conducted quarterly by the Secretariat of the Nuclear Regulation Authority (*9) , entrusted to the Hydrographic Department, Japan Coast Guard (*10) , Japan Fisheries Research and Education Agency (*11) , the National Research Institute of Fisheries Science and the Japan Chemical Analysis Center, for the purpose of understanding the levels of radioactivity at ports nuclear powered warships call in.
(*9) The operations were transferred from the Ministry of Education, Culture, Sports, Science and Technology to the Secretariat of the Nuclear Regulation Authority in April 2013.
(*10) Reorganized from Hydrographic Department, Japan Coast Guard to Hydrographic and Oceanographic Department, Japan Coast Guard in April 2002.
(*11) The Japan Fisheries Research and Education Agency was inaugurated in April 2016.
[Registered Survey Results]
1. Radioactivity survey on environmental samples
| FY | 1974- |
|---|---|
| Main samples | Airborne dust and atmosphere, sediments, sea water, marine products |
| Main nuclides | Co-60, Zn-65, I-131, Cs-134, Cs-137, Ce-144 |
| Remarks | Survey results may not be available for some samples depending on the survey year, and data may not be available for some nuclides depending on the survey sample. |
2. Radiation in the environment
| FY | Cumulative dose | 2005- |
|---|
Radioactivity survey on nuclear powered warships (departure and post-departure survey)
A radioactivity survey that was conducted by the Secretariat of the Nuclear Regulation Authority (*12) , entrusted to the Japan Chemical Analysis Center, for the purpose of monitoring the impact of radioactivity from nuclear powered warships.
(*12) The operations were transferred from the Ministry of Education, Culture, Sports, Science and Technology to the Secretariat of the Nuclear Regulation Authority in April 2013.
[Registered Survey Results and Financial Year]
| FY | 1974- |
|---|---|
| Main samples | Sediments, sea water |
| Main nuclides | Co-60, Zn-65, Cs-134, Cs-137, Ce-144 |
| Remarks | Survey results may not be available for some samples depending on the survey year, and data may not be available for some nuclides depending on the survey sample. |