Project category Demonstrating achievement of Project status Active closure criteria What business need Protecting the health of Aboriginals and other members of the regional community. does this project Protecting the environment of the Alligator Rivers Region from the effects of uranium inform? mining. Closure criteria Radiation Relevance 2 1 theme (if Project applicable) Priority Importance 2 Time A buffer Project number RES-2015-014 Project commencement date 1/2/2015 (if already Estimated completion date 1/2/2021 commenced) Project duration 72 Date required 1/2/2021 (months) In-house or Collaboration Actual completion date N/A outsourced Lead team ENRAD Reason for project (where N/A applicable) Supporting team(s) ANU Project manager Medley, Peter Project total estimated internal resources 180 (person weeks) Project sponsor Van Dam, Rick Project estimated collaborator 24 resources (person weeks) Aims The aims of this project are to: Develop methods to prepare and measure environmental samples for actinium-227 and protactinium-231. Measure actinium-227 and protactinium-231 in environmental samples and determine concentration ratios. Estimate radiation dose contributions to people and non-human biota from actinium-227 and protactinium-231. Background Although a significant body of research has been undertaken on the behaviour of radionuclides of the uranium series in the environment, there is very little information for actinium series radionuclides, in particular actinium-227, partly because techniques for measurement of two key isotopes in the actinium series protactinium-231 and actinium-227 are limited and prone to – – technical difficulties (particularly in the chemical separation steps). It is also argued that the
Project category Demonstrating achievement of closure criteria Project status Active What business need does this project inform? Protecting the health of Aboriginals and other members of the regional community. Protecting the environment of the Alligator Rivers Region from the effects of uranium mining. Closure criteria theme (if applicable) Radiation Project Priority Relevance 2 1 Importance 2 Time buffer A Project number (if already commenced) RES-2015-014 Project commencement date 1/2/2015 Estimated completion date 1/2/2021 Project duration (months) 72 Date required 1/2/2021 In-house or outsourced Collaboration Actual completion date N/A Lead team ENRAD Reason for project (where applicable) N/A Supporting team(s) ANU Project manager Medley, Peter Project total estimated internal resources (person weeks) 180 Project sponsor Van Dam, Rick Project estimated collaborator resources (person weeks) 24 Aims The aims of this project are to: Develop methods to prepare and measure environmental samples for actinium-227 and protactinium-231. Measure actinium-227 and protactinium-231 in environmental samples and determine concentration ratios. Estimate radiation dose contributions to people and non-human biota from actinium-227 and protactinium-231. Background Although a significant body of research has been undertaken on the behaviour of radionuclides of the uranium series in the environment, there is very little information for actinium series radionuclides, in particular actinium-227, partly because techniques for measurement of two key isotopes in the actinium series – protactinium-231 and actinium-227 – are limited and prone to technical difficulties (particularly in the chemical separation steps). It is also argued that the
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