Email: IUR@IRSN.FR http://www.iur-uir.org IAEA IAEA nd Meeting of the Coordination 2 nd Meeting of the Coordination 2 Group on Radiation Protection of Group on Radiation Protection of the Environment the Environment
Email: IUR@IRSN.FR Status of IUR activities Status of IUR activities http://www.iur-uir.org IUR task groups since 1996 IUR task groups since 1996 – Framework systems – Ethichal issues
Email: IUR@IRSN.FR http://www.iur-uir.org Task group Task group Inventory of Worldwide Research Inventory of Worldwide Research Teams, Facilities and priorities Teams, Facilities and priorities
Email: IUR@IRSN.FR http://www.iur-uir.org Task group Task group Objectives Objectives � To identify knowledge gaps and to prioritize future research requirements (needs justification of reasons) � To identify researchers and facilities where research may be conducted � To improve communication methods between IUR members and other interested parties for discussion of issues relating to environmental protection � To raise awareness amongst relevant organisations of research needs and their justification
Email: IUR@IRSN.FR http://www.iur-uir.org Task group Task group achievements achievements � Interactive webpages went live 2005 � TG meeting 2005 � Data collection data evaluated 2005 � Report published in 2006
Email: IUR@IRSN.FR http://www.iur-uir.org Result Result � environmental ionizing radiation research deficiencies � priority areas for future R&D programmes o transfer of radionuclides in the environment o effects of ionizing radiation on biota o dosimetry o gaps in the assessment frameworks to demonstrate protection of the environment from ionizing radiation � Used two methods for identifying gaps - similarities in priorities
Email: IUR@IRSN.FR http://www.iur-uir.org
Email: IUR@IRSN.FR http://www.iur-uir.org Future plans Future plans � Immediate task � To make the reports widely available : http://www.iur-uir.org/publications.cgi � Plans to be discussed but will include � Coordinating discussion on how to address priorities � talking to potential organisation to promote cooperation
Email: IUR@IRSN.FR http://www.iur-uir.org Task group Task group further work further work � advancing the scientific understanding of multi- stressors impact on life (biota and related ecosystems) � stimulating research prone to address potential impacts beyond the individual level, such as to meet the call from environmental managers to adopt an ecosystem approach to risk assessment � promoting useful links between “non-radioactive and radioactive” scientific communities dealing with human and ecological risk assessment.
Email: IUR@IRSN.FR http://www.iur-uir.org Protection of the environment Protection of the environment Transfer – – Key outputs Key outputs Transfer � We need to � better understand the processes that determine how radionuclides transfer through an ecosystem � better understand and estimate uncertainties in the transfer factors � better understand the role chemical speciation plays in determining how radionuclides transfer through ecosystems � determine transfer factors for particular radionuclides and biota and/or look at dynamic modelling approaches
Email: IUR@IRSN.FR http://www.iur-uir.org Protection of the environment Protection of the environment � We need to Effects – – Key outputs Key outputs Effects � understand the interaction between ionising radiation and other environmental stressors � understand more about how radiation induces biological damage (e.g. genomic instability, bystander effect) � undertake radiation exposure studies on different biota groups (e.g. amphibians, fish, reptiles) � understand whether localized exposure (e.g. to organs) is important in terms of demonstrating protection from exposure to ionising radiation � establish no observed effect levels for different radiation types for reproductive endpoints in groups of biota � (2 extra) determine the difference between effect and harm and understand indirect ecological effects
Email: IUR@IRSN.FR http://www.iur-uir.org Protection of the environment Protection of the environment Dosimetry – – Key outputs Key outputs Dosimetry � We need � radionuclide retention models for different biota � to undertake quality assurance on the dosimetry approaches � to evaluate the uncertainties associated with the different dose per unit concentration factors � to conduct experiments to determine the relative biological effectiveness (RBE) of different radiation types on different biota
Email: IUR@IRSN.FR http://www.iur-uir.org Protection of the environment Protection of the environment Gaps – – Key outputs Key outputs Gaps � We need � to provide better estimates of uncertainty in the assessment � information on spatial and temporal averaging of radionuclide distributions � to better understand how the variation in background/natural radiation rates may influence any assessment � to validate the assessment tool and the overall approach � to consider alternatives to doses e.g. ambient concentrations, body burden etc � (1 extra) more basic ecological data to allow us to measure/predict changes that are already occurring
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