Category of Content
Siting Experience Documents Only
Publication Date
Country
Keywords
PWR Axial Burnup Profile Analysis
PWR Axial Burnup Profile Analysis
The purpose of this activity is to develop a representative “limiting” axial burnup profile for pressurized water reactors (PWRs), which would encompass the isotopic axial variations caused by different assembly irradiation histories, and produce conservative isotopics with respect to criticality. The effect that the low burnup regions near the ends of spent fuel have on system reactivity is termed the “end-effect”. This calculation will quantify the end-effects associated with Pressurized Water Reactor (PWR) fuel assemblies emplaced in a hypothetical 21 PWR waste package.
BWR Axial Profile
BWR Axial Profile
The purpose of this calculation is to develop axial profiles for estimating the axial variation in burnup of a boiling water reactor (BWR) assembly spent nuclear fuel (SNF) given the average burnup of an assembly. A discharged fuel assembly typically exhibits higher burnup in the center and lower burnup at the ends of the assembly. Criticality safety analyses taking credit for SNF burnup must account for axially varying burnup relative to calculations based on uniformly distributed assembly average burnup due to the under-burned tips.
PWR Axial Burnup Profile Analysis
PWR Axial Burnup Profile Analysis
The purpose of this activity is to develop a representative “limiting” axial burnup profile for pressurized water reactors (PWRs), which would encompass the isotopic axial variations caused by different assembly irradiation histories, and produce conservative isotopics with respect to
PWR Axial Profile Evaluation
PWR Axial Profile Evaluation
This calculation compares results from criticality evaluations for a 21-assembly pressurized water reactor (PWR) waste package based on 12 axial burnup profile representations for commercial spent nuclear fuel (SNF) assemblies. The burnup profiles encompass the axial variations caused by different fuel assembly irradiation histories in a commercial PWR, including end effects, and the concomitant effect on reactivity in the waste package. The bounding axial burnup profiles in Table T of reference 6.3 are used for this analysis.
Stakeholder Involvement in Decision Making: A Short Guide to Issues, Approaches and Resources
Stakeholder Involvement in Decision Making: A Short Guide to Issues, Approaches and Resources
Radioactive waste management is embedded in broader societal issues such as the
environment, risk management, energy, health policy and sustainability. In all
these fields, there is an increasing demand for public involvement, participation
and engagement. Involvement may take different forms at different phases and
can include sharing information, consulting, dialoguing or deliberating on
decisions with relevant stakeholders. Stakeholder involvement should be seen as a
Research to Support Expansion of U.S. Regulatory Position on Burnup Credit for Transport and Storage Casks
Research to Support Expansion of U.S. Regulatory Position on Burnup Credit for Transport and Storage Casks
In 1999, the United States Nuclear Regulatory Commission (U.S. NRC) initiated a research program
to support the development of technical bases and guidance that would facilitate the implementation of burnup
credit into licensing activities for transport and dry cask storage. This paper reviews the following major areas of
investigation: (1) specification of axial burnup profiles, (2) assumption on cooling time, (3) allowance for
assemblies with fixed and removable neutron absorbers, (4) the need for a burnup margin for fuel with initial
WP 2 Appendix 10 Balance of Power: Principles and Good Practices for Local Stakeholders to Influence National Decision-making Processes
WP 2 Appendix 10 Balance of Power: Principles and Good Practices for Local Stakeholders to Influence National Decision-making Processes
Our basic position is that the outcomes of policy-making in radioactive waste management (RWM) should be driven by the will of the people through democratic processes. Achieving this inclusiveness requires good practices to increase local influence on what is essentially a national policy process. However inclusiveness poses significant practical problems; can society afford lengthy and costly consultation processes, often perceived as inefficient and ineffective?
Stakeholder Involvement and Confidence in the Process of Decision-making for the Disposal of Spent Nuclear Fuel in Finland
CORWM’S ADVICE TO GOVERNMENT ON OPTIONS FOR THE ACCELERATION OF THE IMPLEMENTATION OF GEOLOGICAL DISPOSAL
CORWM’S ADVICE TO GOVERNMENT ON OPTIONS FOR THE ACCELERATION OF THE IMPLEMENTATION OF GEOLOGICAL DISPOSAL
This paper is a response to a request from the Department of Energy and Climate Change (DECC) for CoRWM’s advice on the 2011 review of options for accelerating the geological disposal programme carried out by the Radioactive Waste Management Directorate (RWMD) of the Nuclear Decommissioning Authority (NDA).
WP 3 Quality of decision-making process Proposed Framework for Decision-making Processes
WP 3 Quality of decision-making process Proposed Framework for Decision-making Processes
The long-term governance of radioactive waste is complex socio-technical issue. The disposition of radioactive waste is decided on ethical grounds, having to take into account a variety of other dimensions (society, economy, ecology, politics, time, space, and technology). Thereto, a study of variants is required. Decision theory, in principle, takes diverse options as a starting point begin as the basis of a decision.
WP 2 Appendix 8 Mechanisms for Local Influence on National Decision Making Processes in Radioactive Waste Management
WP 2 Appendix 8 Mechanisms for Local Influence on National Decision Making Processes in Radioactive Waste Management
This document develops further the questions offered to stakeholders in the Berlin Meeting (see Appendix). It describes mechanisms that local stakeholders can use to influence national decision-making processes in radioactive waste management.
WP 2 Appendix 9 Principles and Good Practices for Local Actors to Influence National Decision-Making Processes
WP 2 Appendix 9 Principles and Good Practices for Local Actors to Influence National Decision-Making Processes
The outcomes of policy-making in radioactive waste management (RWM) should be driven by the will of the people through democratic processes. Achieving this inclusiveness requires good practices to increase local influence on what is essentially a national policy process. However inclusiveness poses significant practical problems; can society afford lengthy and costly consultation processes, often perceived as inefficient and ineffective?
Final Report: Influence of Local Actors on National Decision-making Processes WP2
Final Report: Influence of Local Actors on National Decision-making Processes WP2
Work Package 2 (WP2) focused on the ways in which local stakeholders can influence national decision-making processes on radioactive waste management (RWM). The participants in WP2 were particularly interested in examining how local stakeholders could contribute to national debates. Their interest stemmed from the fact that participants from France, Spain and the United Kingdom — who made up the majority of the WP2 group — were engaged, as stakeholders, in the decision-making processes that were under way in each of those countries.
Identifying remaining socio-technical challenges at the national level: Hungary
Identifying remaining socio-technical challenges at the national level: Hungary
This paper summarises the history of RWM in Hungary, with a special attention to changing decision making approaches, social conflicts, and socio-technical challenges. First the institutional background of RWM is outlined. Next, efforts to build facilities for the management of low- and intermediatelevel waste (L/ILRW) and high-level waste (HLW) are summarized. This is followed by the short description of remaining socio-technical challenges. Finally, changes in decision-making approaches and tools are analysed.
Quality of Decision-making Processes: Decision-making processes in Radioactive Waste Governance - Insights and Recommendations WP3
Quality of Decision-making Processes: Decision-making processes in Radioactive Waste Governance - Insights and Recommendations WP3
Work Package 3 (WP 3) set out to provide practical recommendations for the design and implementation of a “robust” decision-making process (DMP) in radioactive waste governance/governance of radioactive waste management (RWG).
Structuring local communities and development of local democracy for engagement in Radioactive Waste Management governance
Structuring local communities and development of local democracy for engagement in Radioactive Waste Management governance
The "COWAM SPAIN" Initiative and the Current Project Under Consideration for a National Interim Storage Facility for Spent Fuel and High Level Waste
Stepwise Approach to the Long-Term Management of Radioactive Waste
Stepwise Approach to the Long-Term Management of Radioactive Waste
A summary of the view of the Nuclear Energy Agency Forum on Stakeholder Confidence with regard to stepwise decision making in the context of long-term management of radioactive waste.