IAEA IAEA nd Meeting of the Coordination 2 nd Meeting of the - - PowerPoint PPT Presentation

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iaea iaea nd meeting of the coordination

IAEA IAEA nd Meeting of the Coordination 2 nd Meeting of the - - PowerPoint PPT Presentation

Oct 28, 2023 205 likes •346 views

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

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IAEA IAEA 2 2nd

nd Meeting of the Coordination

Meeting of the Coordination Group on Radiation Protection of Group on Radiation Protection of the Environment the Environment

Email: IUR@IRSN.FR http://www.iur-uir.org

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IUR task groups since 1996 IUR task groups since 1996

Email: IUR@IRSN.FR http://www.iur-uir.org

Status of IUR activities Status of IUR activities – Framework systems – Ethichal issues

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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

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Task group Task group

Objectives Objectives

Email: IUR@IRSN.FR http://www.iur-uir.org

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

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Task group Task group

achievements achievements

Email: IUR@IRSN.FR http://www.iur-uir.org

Interactive webpages went live 2005 TG meeting 2005 Data collection data evaluated 2005 Report published in 2006

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Result Result

Email: IUR@IRSN.FR http://www.iur-uir.org

environmental ionizing radiation research deficiencies priority areas for future R&D programmes

transfer of radionuclides in the environment
effects of ionizing radiation on biota
dosimetry
gaps in the assessment frameworks to demonstrate

protection of the environment from ionizing radiation Used two methods for identifying gaps - similarities in priorities

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Email: IUR@IRSN.FR http://www.iur-uir.org

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Future plans Future plans

Email: IUR@IRSN.FR http://www.iur-uir.org

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

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Task group Task group further work further work

Email: IUR@IRSN.FR http://www.iur-uir.org

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.

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Protection of the environment Protection of the environment

Transfer Transfer – – Key outputs Key outputs

Email: IUR@IRSN.FR http://www.iur-uir.org

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

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Protection of the environment Protection of the environment

Effects Effects – – Key outputs Key outputs

Email: IUR@IRSN.FR http://www.iur-uir.org

We need to 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

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Protection of the environment Protection of the environment

Dosimetry Dosimetry – – Key outputs Key outputs

Email: IUR@IRSN.FR http://www.iur-uir.org

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

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Protection of the environment Protection of the environment

Gaps Gaps – – Key outputs Key outputs

Email: IUR@IRSN.FR http://www.iur-uir.org

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