Radiation Protection Regulations (SOR/2000-203)

Regulations are current to 2016-05-12 and last amended on 2015-06-12. Previous Versions

SCHEDULE 2(Subsection 1(1))

RADIATION WEIGHTING FACTORS

Column 1Column 2
ItemType of Radiation and Energy RangeWeighting Factor
1Photons, all energies1
2Electrons and muons, all energiesFootnote for RADIATION WEIGHTING FACTORS 11
3NeutronsFootnote for RADIATION WEIGHTING FACTORS 2 of energy < 10 keV5
4NeutronsFootnote for RADIATION WEIGHTING FACTORS 2 of energy 10 keV to 100 keV10
5NeutronsFootnote for RADIATION WEIGHTING FACTORS 2 of energy > 100 keV to 2 MeV20
6NeutronsFootnote for RADIATION WEIGHTING FACTORS 2 of energy > 2 MeV to 20 MeV10
7NeutronsFootnote for RADIATION WEIGHTING FACTORS 2 of energy > 20 MeV5
8Protons, other than recoil protons, of energy > 2 MeV5
9Alpha particles, fission fragments and heavy nuclei20
  • Return to footnote 1Excluding Auger electrons emitted from nuclei bound to DNA.

  • Return to footnote 2Radiation weighting factors for these neutrons may also be obtained by referring to the continuous curve shown in Figure 1 on page 7 of the 1990 Recommendations of the International Commission on Radiological Protection, ICRP Publication 60, published in 1991.

 
Date modified: