Progress With Nuclear Energy Agency Task Group on Nuclear Site Restoration

2013 ◽  
Author(s):  
Marie-Anne Berton ◽  
Julian Cruickshank ◽  
Catherine Ollivier-Dehaye ◽  
Horst Monken-Fernandes ◽  
Peter Orr
Keyword(s):  
Early Intervention ◽  
Case Studies ◽  
Nuclear Energy ◽  
Task Group ◽  
Current Status ◽  
Energy Agency ◽  
Land Quality ◽  
Nuclear Site ◽  
Site Restoration ◽  
Share Information

The Nuclear Energy Agency (NEA) Co-operative Programme for the Exchange of Scientific and Technical Information Concerning Nuclear Installation Decommissioning Projects (CPD) is a joint undertaking of a limited number of organisations, mainly from NEA member countries. The objective of the CPD is to acquire and share information from operational experience in decommissioning nuclear installations that is useful for future projects. The information exchange includes biannual meetings of the Technical Advisory Group (TAG) and supporting projects on topics. The TAG has decided to form a Task Group to review nuclear site restoration starting in March 2012 that involves nuclear operators, experts and regulators. The group is supported by the International Atomic Energy Agency (IAEA) that is leading similar work on legacy sites. Within NEA Counties, several nuclear sites are being restored for beneficial reuse. Restoration is normally considered the last activity in a sequence of decommissioning steps but increasingly the value of long-term planning and parallel remediation is being recognised. It is essential that regulators know that liabilities are well understood (well characterised) and there is adequate financial provision to carry on the remediation works. Operators are also learning that early intervention is needed to ensure prevention and minimisation of leaks and spills of radioactive and non-radioactive contaminants in order to reduce groundwater and soil contamination, thus reducing overall liabilities and ensuring protection of the environment. Early intervention needs to be guided by good practices that include adequate site characterisation, reliable conceptual models and defined goals. Currently most nuclear site restoration work takes place at the legacy nuclear sites. This work has emphasised the need for better clarity in terms of the regulatory expectations for site restoration. At other nuclear sites the drivers are less evident and there is a risk that land quality issues are overlooked. The aim of the Task Group is to share information on experiences, approaches and techniques for land quality management at selected nuclear sites to ensure risks to workers and the environment, costs and disruption to decommissioning programmes are minimised. The project will also highlight the successes and lessons to learn from experience of remediation that will be helpful to operational situations on nuclear sites. The paper will report on progress with analysis of national and site level questionnaires and early consideration of case studies. The questionnaires will provide a snapshot of the current status, issues and best practice with site restoration and the case studies will provide in depth illustrations of practice with nuclear site or remediation projects.

Methodological developments and practice in characterisation of unconventional and legacy waste

2022 ◽  
Author(s):  
Per Strand ◽  
Nick Jefferies ◽  
Yoshikazu Koma ◽  
Jo Plyer
Keyword(s):  
Waste Management ◽  
Case Studies ◽  
Nuclear Energy ◽  
Management Programme ◽  
Lessons Learned ◽  
Entire System ◽  
Energy Agency ◽  
Basic Features ◽  
The Right ◽  
Waste Characterisation

Abstract Radioactive waste management requires planned and systematic actions to provide confidence that the entire system, processes and final products will satisfy given requirements for quality. The characterisation process is dependent on setting clear characterisation objectives and gathering the right information to underpin the decisions that need to be taken to manage the waste safely. This paper reviews experience of characterisation of waste generated from past nuclear activities that were not conducted in compliance consistent with current criteria, or from unexpected situations that were not planned for. This experience shows that the development of a reliable and efficient characterisation and categorisation methodology is a common challenge for such wastes, referred to here as unconventional and legacy (UL) waste. Through the activites of the Nuclear Energy Agency Expert Group on the Characterisation of Unconventional and Legacy Waste (EGCUL), consideration has been given to widely used waste stream characterisation procedures and methods that were originally developed primarily for application in conventional decommissioning work. Although they provide a substantial basis for characterisation, there are various additional factors that commonly need to be taken into account in the case of UL waste. By analysing the challenges and lessons learned from a variety of case studies and other international experience, it has been possible to identify opportunities for adaptations and enhancements to these characterisation methologies, and these are set out and explained. The need for integration of waste characterisation with other aspects of strategic planning for UL waste management is discussed, including characterisation to address any non-radiological hazards.The analysed case studies have also highlighted the importance of developing a robust legislative and regulatory framework in parallel with an appropriate waste infrastructure to treat, store and dispose of UL waste. Finally, the basic features of a UL waste characterisation roadmap are presented, including the interactions within a wider UL waste management programme and key areas for further consideration and possible development. It is anticipated such work can be supported by continued international cooperation.

Nuclear Power in Latin America: An Overview of Its Present Status

1983 ◽  
Vol 25 (3) ◽  
pp. 377-415 ◽  
Author(s):  
Margarete K. Luddemann
Keyword(s):  
Developing Countries ◽  
Latin America ◽  
Nuclear Power ◽  
Nuclear Energy ◽  
Fuel Cycle ◽  
Field Studies ◽  
Energy Agency ◽  
Self Sufficiency ◽  
Policy Concern ◽  
Alternative Sources

The pivotal role energy plays in national economics not only converts the access to sources of supply into a vivid issue of foreign policy concern, but also causes an understandable preoccupation with investment capabilities and self-sufficiency. A report prepared by the International Atomic Energy Agency (IAEA) in 1974 predicted a bright future for nuclear energy in the i developing countries and encouraged use of this form of energy after numerous field studies.A nation that commits itself to nuclear energy by purchasing nuclear power-generating technology but not fuel cycle facilities incurs the risk of becoming dependent upon the supplier country because a quick switch to alternative sources of supply is difficult in cases of curtailment of fuel.

Geoconservation strategies framework in Brazil: Current status from the analysis of representative case studies

2022 ◽  
Vol 128 ◽  
pp. 194-207
Author(s):  
Maria da Glória Garcia ◽  
Marcos Antônio Leite do Nascimento ◽  
Kátia Leite Mansur ◽  
Ricardo Galeno Fraga de Araújo Pereira
Keyword(s):  
Case Studies ◽  
Current Status ◽  
Representative Case ◽  
Brazil Current ◽  
Geoconservation Strategies

Abstract PS10-35: Early intervention for and management of alpelisib (ALP)-induced hyperglycemia: Case studies from the phase III SOLAR-1 trial

2021 ◽  
Author(s):  
Ingrid Mayer ◽  
Azeez Farooki ◽  
Hope S. Rugo ◽  
Hiroji Iwata ◽  
Eva Ciruelos ◽  
...  
Keyword(s):  
Early Intervention ◽  
Case Studies ◽  
Phase Iii

scholarly journals OECD-NEA Expert Group on Multi-Physics Experimental Data, Benchmarks and Validation

2018 ◽  
Author(s):  
Timothy Valentine ◽  
Kostadin Ivanov ◽  
Maria Avramova ◽  
Alessandro Petruzzi ◽  
Jean-Pascal Hudelot ◽  
...  
Keyword(s):  
Experimental Data ◽  
Nuclear Energy ◽  
Great Promise ◽  
Expert Group ◽  
Energy Agency ◽  
Validation Data ◽  
Task Forces ◽  
Spatial Domains ◽  
Physics Modeling ◽  
Physical Phenomena

High-fidelity, multi-physics modeling and simulation (M&S) tools are being developed and utilized for a variety of applications in nuclear science and technology and show great promise in their abilities to reproduce observed phenomena for many applications. Even with the increasing fidelity and sophistication of coupled multi-physics M&S tools, the underpinning models and data still need to be validated against experiments that may require a more complex array of validation data because of the great breadth of the time, energy and spatial domains of the physical phenomena that are being simulated. The expert group on Multi-Physics Experimental Data, Benchmarks and Validation (MPEBV) of the Nuclear Energy Agency (NEA) of the Organization for Economic Cooperation and Development (OECD) was formed to address the challenges with the validation of such tools. The work of the MPEBV expert group is shared among three task forces to fulfill its mandate and specific exercises are being developed to demonstrate validation principles for common industrial challenges. This paper describes the overall mission of the group, the specific objectives of the task forces, the linkages among the task forces, and the development of a validation exercise that focuses on a specific reactor challenge problem.

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