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Framework for Radiological Protection of Human and Biota Assessments: Integrated Assessment Working Group

This coordinated activity aims to establish a consistent framework for radiological protection by incorporating human and biota assessments. The objectives include generating guidance, promoting familiarity with biota assessments, and ensuring biota are routinely included in assessments. The need arises from environmental legislation requirements, ICRP references, and the need for environmental protection in various international contexts. Various assessment tools and approaches are utilized worldwide, emphasizing the importance of comparing predicted doses to established criteria to assess impacts.

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Framework for Radiological Protection of Human and Biota Assessments: Integrated Assessment Working Group

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  1. Integrated Assessment Working group or coordinated activity?

  2. Objectives • To demonstrate that human and biota assessments fit into a consistent framework for radiological protection • Generate guidance • Familiarity in use of biota assessments • Biota included as routine in assessments

  3. Why needed? • Environmental (conservation) legislation requires explicit demonstration of protection • ICRP make more reference to protection of the environment & have Committee 5 • IAEA – recognition of ‘expectations’, revised BSS contains reference to environmental protection through Environmental Impact Assessments • European BSS to include chapter on EP

  4. Used for assessments: • ERICA: Sweden, UK, Finland, OSPAR, parameters used in other approaches • EA R&D128: England & Wales >700 authorisations (Natura 2000 sites) and Scotland – all Natura 2000 sites in Scotland • RESRAD-BIOTA: US(DOE) sites • FASSET/EPIC: elements used in various approaches (inc. below) • Number of other approaches used in assessments in Canada, France, Lithuania

  5. Human Assessment PATHWAY OF EXPOSURE RADIONUCLIDE SOURCE HABITS INFORMATION ‘REFERENCE’ MAN Application of a weighting factor for RBE TOTAL ABSORBED DOSE Compare predicted dose to radiological criteria based on known biological effects IMPACT

  6. Human Assessment PATHWAY OF EXPOSURE RADIONUCLIDE SOURCE HABITS INFORMATION Dispersion model e.g. SRS-19 ‘REFERENCE’ MAN Application of a weighting factor for RBE TOTAL ABSORBED DOSE Compare predicted dose to radiological criteria based on known biological effects IMPACT

  7. Biota Assessment PATHWAY OF EXPOSURE RADIONUCLIDE SOURCE ECOLOGICAL PARAMETERS Dispersion model e.g. SRS-19 ‘REFERENCE’ ORGANISM Application of a weighting factor for RBE TOTAL ABSORBED DOSE Compare predicted dose to known biological or ecological effects & guideline values IMPACT

  8. Biota Assessment PATHWAY OF EXPOSURE RADIONUCLIDE SOURCE ECOLOGICAL PARAMETERS Dispersion model e.g. SRS-19 ‘REFERENCE’ ORGANISM Application of a weighting factor for RBE TOTAL ABSORBED DOSE Compare predicted dose to known biological or ecological effects & guideline values IMPACT

  9. Biota Assessment PATHWAY OF EXPOSURE RADIONUCLIDE SOURCE ECOLOGICAL PARAMETERS Dispersion model e.g. SRS-19 ‘REFERENCE’ ORGANISM Application of a weighting factor for RBE TOTAL ABSORBED DOSE Compare predicted dose to known biological or ecological effects & guideline values e.g. 10 µGy/h IMPACT

  10. Examples • RESRAD – Part of suite: Offsite, build, biota, chemical etc • Models being put together e.g. dispersion (MEAD), dosimetry and biota models for Sellafield • EA Initial Radiological Assessment Tool

  11. Suggested Plan • Training/familiarisation with biota models during next EMRAS meeting (Jan 2010)

  12. Suggested Plan • Training/familiarisation with biota models during next EMRAS meeting (Jan 2010) • Theme 1 working groups developing scenarios • Consider whether biota assessment appropriate to scenario & potential participants in Jan 2010

  13. Suggested Plan • Training/familiarisation with biota models during next EMRAS meeting (Jan 2010) • Theme 1 working groups developing scenarios • Consider whether biota assessment appropriate to scenario & potential participants in Jan 2010 • Participants run biota models, mid year meeting to discuss results (Jun 2010)

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