2. Brenda Howard (CEH) Centre for Ecology & Hydrology - Lancaster 1 st – 3 rd April 2014

3.  Assessments are being done – little formal training available  - so we don't assume much prior knowledge  We are being asked for advice on use of assessment tools  The tools are only recently developed and there are various complexities and assumptions which need to be understood www.radioecology-exchange.org

4.  Some tools freely available and usable by others  Focus here on ERICA Tool (and its Integrated Approach) developed by EC consortium  RESRAD-BIOTA and R&D 128 mentioned when they have features not present in ERICA Tool www.radioecology-exchange.org EPIC FP4 FASSET FP4 ERICA FP5 PROTECT FP6

5. www.radioecology-exchange.org Release Risk

6. www.radioecology-exchange.org Media concentration Release Dose rate Risk Dispersion model Transfer model Dosimetry model (internal exposure) Wholebody activity concentrations Dosimetry model (external exposure) Effects understanding/ numerical benchmark Problem formulation

7.  Many approaches use a tiered assessment structure (in common with other areas of risk assessments)  simple initial screening progressing to more refined assessments if needed  Also referred to as:  staged or graded approaches

8. www.radioecology-exchange.org

9. Environmental and health protection Conservatism Resources TIER 1 Risk screening TIER 2 Generic quantitative TIER 3 Detailed Quantitative Data needs

10. Environmental and health protection Conservatism Resources TIER 1 Risk screening TIER 2 Generic quantitative TIER 3 Detailed Quantitative Data needs The level of detail in a risk assessment should be proportionate with the nature and complexity of the risk being addressed and consistent with decision-making needs

11.  Nick Beresford – Introductions to tools, Transfer, Interpreting Assessments, ERICA update  David Copplestone – Introductions to tools, Benchmarks, Noble gases, Radiation effects  Brenda Howard – International context  Jordi Vives i Batlle – Dosimetry, Dispersion modelling www.radioecology-exchange.org