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Dose Calculation About NORM Regulations in Japan In-depth Data Glossary Information for specialists

  In-depth Data
Please click the material to be examined; results will be displayed.

¢£Natural resources
- Metal and nonmetal ores
Aluminium ore (such as bauxite)
Zirconium ore (such as zircon)
Titanium ore (ilmenite)
Iron ore (such as limonite)
Copper ore (copper pyrite)
Molybdenite ore (molybdenum sulfide)
Phosphorus ore (such as calcium phosphate)

- Rock and mineral
Kaolinite
Granite
Granodiorite
Peridotite
Pyroxenite
Tuff
Basalt
Limestone
Diorite
Marble
Dolomite
Gabbro
Schist
Gneiss
Rhyolite
- Fossil fuel
Lignite
Coal
Oil
Peat
¢£Products generated from natural resources
- Industrial products
Cement
Nitrogenous fertilizer
Phosphoric acid
Phosphate gypsum
Phosphate fertilizer
- Waste
Lignite ash
Oil refinery scale
Oil refinery sludge
Coal ash
¢£General consumer products to which a radionuclide was intentionally added (List is currently being updated; only radioactivity concentration is available.)
- General products 
Shoe deodrant
Insole
Deodorizer for shoebox
Ship bottom paint
Fuel efficiency improvement agent
Exhaust stench purfication agent
Muffler catalyst
- Products for hopefully promoting health
Cream
Gel
Powder
Soap
Minus ion sticker
Radon bath additive
Domestic hot spring machine

  Radioactivity concentration

Material Radionuclides Bq/kg
peat
U-238 series
Th-232 series
K-40
IAEA Critical Value U-238 series
Th-232 series
K-40
¢£Glossary
Radioactivity, Radioactivity concentration, U-238series, Th-232series, K-40
¢£The values of radioactivity concentration of U-238 series, Th-232 series, and K-40 are the mean values of the research results. Nuclides with no value are under research. Individual values that are origins of the mean value vary widely, with some more than 10 times the mean value. To check the range values of radioactivity concentration of the U-238 series, Th-232 series, and K-40, see "Concentration range." To check the individual values of the radioactivity concentration of the U-238 series, Th-232 series, and K-40, see "Individual radioactivity data."
¢£According to the International Atomic Energy Agency (IAEA), a material with a value below the IAEA critical value is exempt from regulation.
¢£In Japan, a material with a value below the quantity and concentration determined by the Nuclear Reactor Regulation Law is exempt from regulation.
¢£If the value of a material exceeds the IAEA critical value, actual dose measurement is recommended, even if the material is exempt from the Nuclear Reactor Regulation Law.



Individual radioactivity data Concentration range


  Dose (amount of radiation)
Circumstances mSv/year
Transportation Compare with usual dose
Indoor work Compare with usual dose
Indoor storage
Compare with usual dose
Outdoor work
Compare with usual dose
Outdoor storage Compare with usual dose
Road construction
Compare with usual dose
Building construction Compare with usual dose
ICRP
Exemption Level





¢£The values of dose are based on effective dose. The effective dose assigned to evaluate whole-body health effects upon exposure to radioactivity, and is employed exclusively for radiation protection. Dose is shown in Sv (sievert) units.
¢£The effective dose is calculated on the basis of the dose calculation method of the RP-122 European Commission, (assuming typical work environments). Exposure to radon is not included.
¢£Radionuclides subject to effective dose calculation are the U-238 series, Th-232 series, and K-40. The radioactivity concentration employed to calculate effective dose is the mean value of the radioactivity concentration published in this database. Individual values of the radioactivity concentration vary widely, with some more than 10 times the mean value. Therefore, effective dose also varies widely. Effective dose calculated with maximum value and minimum value can be reviewed in "Dose range."
¢£mSv is 1/1000 of Sv.
¢£mSv/year means effective dose per year. For example, 2mSv/year means that an annual amount of radiation exposure is 2 mSv.
¢£The ICRP Dose Criteria are the intervention exemption levels recommended in Publication 82 International Commission on Radiological Protection (ICRP). The ICRP suggests that if the dose is below the intervention exemption levels, no measures are necessary to reduce the dose.
¢£Dose of more than 1 mSv/year are recommended to be reduced to 1mSv/year.
¢£Check the influence of radiation
¢£Check the Japanese regulations (laws/guidelines) concerning NORM

Detailed dose evaluation ¡¡ Dose range ¡¡
  Import volume (amount used)
Top 5 importing countries
Country nameDegree of import
dependence (%)
Import volume (t)
CANADA50.95 (%)69631 (t)
RUSSIAN12.42 (%)16972 (t)
GERMANY10.54 (%)14402 (t)
CHINA9.74 (%)13315 (t)
LATVIA3.73 (%)5096 (t)
Others12.64 (%)17250 (t)

Total import volume
136666 (t)

Detailed import volume (amount used) data
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