Recommendations on Dose Coefficients for Assessing Doses From Accidental Radionuclide Releases to the Environment

Joint Working Group of Radiation Protection Bureau
Health Canada
1999

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Table of Contents

• Abstract
• Acknowledgements
• Introduction
• Dosimetric Quantities
• Exposure Pathways
  • Internal Exposure from Inhalation of Radionuclides in the Plume
    • Human Physiological Parameters
    • Inhalation Dose Coefficients
  • External Exposure from Radionuclides in the Plume and on the Ground
    • Dose Coefficients from Macdonald and Laverlock (1996)
    • Dose Coefficients from Eckerman and Legett (1996)
    • Comparison of the Macdonald - Laverlock and Eckerman - Leggett Data Sets
    • Effect of Gender and Age on External Dose Coefficients
    • Other Modifying Factors
• Summary Of Recommended Assessment Parameters
• References

Appendices

• Appendix A: Working Group Membership
• Appendix B: Considerations for Radionuclide Decay Chains and Example Calculations
• Appendix C: Compilation of External Dose Rate Coefficients for Cloudshine and Groundshine

List of Figures

• Figure 1: Frequency distributions of DC_EL:DC_MLfor cloudshine and groundshine dose coefficients
• Figure 2: Ratio of DC_EL :DC_ML versus DC_EL

List of Tables

• Table 1: Recommended breathing rates for the six ICRP age groups
• Table 2: Recommended effective dose coefficients for internal and external exposures to selected radionuclides

Addendum: Typographical corrections