Download or read book Strategies and Considerations for the Back End of the Fuel Cycle written by Nuclear Energy Agency and published by . This book was released on 2021 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: A wealth of technical information exists on nuclear fuel cycle options-- combinations of nuclear fuel types, reactor types, used or spent nuclear fuel (SNF) treatments, and disposal schemes-- and most countries with active nuclear power programmes conduct some level of research and development on advanced nuclear fuel cycles. However, perhaps because of the number of options that exist, it is often difficult for policy makers to understand the nature and magnitude of the differences between the various options. This report explores the fuel cycle options and the differentiating characteristics of these options. It also describes the driving factors for decisions related to both the development of the fuel cycle and the characteristics resulting from implementing the option. It includes information on the current status and future plans for power reactors, reprocessing facilities, disposal facilities, and the status of research and development activities in several countries. It is designed for policy makers to understand the differences among the fuel cycle options in a way that is concise, understandable, and based on the existing technologies, while keeping technical discussions to a minimum.
Download or read book Back End of the Nuclear Fuel Cycle written by International Symposium on the Back End of the Nuclear Fuel Cycle and published by . This book was released on 1987 with total page 671 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Specific Considerations in the Assessment of the Status of the National Nuclear Infrastructure for a New Research Reactor Programme written by IAEA and published by International Atomic Energy Agency. This book was released on 2021-06-17 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: The assessment approach described in this publication provides a comprehensive means to determine the status of the infrastructure conditions relevant to all issues detailed in IAEA Nuclear Energy Series No. NP-T-5.1, Specific Considerations and Milestones for a Research Reactor Project. This approach can be used by any interested Member State for self-assessment to identify weaknesses and to determine the additional work needed to develop its national nuclear infrastructure for research reactor programme to an appropriate level. Member States planning to embark on both a research reactor programme and a nuclear power programme, may refer to this publication to ensure that the approach and methodology for the implementation of both programmes is harmonized, efficient and effective.
Download or read book Nuclear Economy 2 written by Jacques Percebois and published by John Wiley & Sons. This book was released on 2024-01-18 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the factual, precise, complete and accessible economic elements of nuclear energy in order to contribute to an informed and dispassionate debate. It analyzes the economic aspects of spent fuel management, including the costs and financing of long-term storage and deep geological disposal. The economic costs of a nuclear accident are also discussed from both theoretical and applied angles, based on the Fukushima nuclear disaster. Nuclear Economy 2 also examines the industrial and political aspects of the future energy mix. Nuclear energy is thus placed in the more global context of the European electricity market. Finally, this book offers a panorama of energy scenarios on the scale of France, but also of the world.
Download or read book A New Approach to the Nuclear Fuel Cycle written by Kelsey Hartigan and published by Rowman & Littlefield. This book was released on 2015-02-23 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Nuclear Threat Initiative and the Center for Strategic and International Studies joined to launch the New Approaches to the Fuel Cycle project. This project sought to build consensus on common goals, address practical challenges, and engage a spectrum of actors that influence policymaking regarding the nuclear fuel cycle. The project also tackled one of the toughest issues—spent nuclear fuel and high level waste—to see if solutions there might offer incentives to states on the front end of the nuclear fuel cycle and address the inherent inertia and concerns about additional burdens and restrictions that have stalled past efforts to improve the robustness of the nonproliferation regime. This report presents the group’s conclusions that a best-practices approach to the nuclear fuel cycle can achieve these objectives and offer a path to a more secure and sustainable nuclear landscape.
Download or read book U S Nuclear Waste written by Gregory Hall and published by Nova Science Publishers. This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Blue Ribbon Commission on America's Nuclear Future was chartered to recommend a new strategy for managing the back end of the nuclear fuel cycle. The Nation's failure to come to grips with the nuclear waste issue has already proved damaging and costly and it will be more damaging and more costly the longer it continues: damaging to prospects for maintaining a potentially important energy supply option for the future, damaging to state-federal relations and public confidence in the federal government's competence, and damaging to America's standing in the world -- not only as a source of nuclear technology and policy expertise but as a leader on global issues of nuclear safety, non-proliferation, and security. This book examines the use of nuclear energy as a low-carbon energy resource with a focus on the management of the nuclear fuel cycle, based on emerging technologies and developments.
Download or read book Design Strategies for Optimizing High Burnup Fuel in Pressurized Water Reactors written by Zhiwen Xu and published by . This book was released on 2003 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work is focused on the strategy for utilizing high-burnup fuel in pressurized water reactors (PWR) with special emphasis on the full array of neutronic considerations. The historical increase in batch-averaged discharge fuel burnup, from ~30 MWd/kg in the 1970s to ~50 MWd/kg today, was achieved mainly by increasing the reload fuel enrichment to allow longer fuel cycles: from an average of 12 months to about 18 months. This also reduced operating costs by improving the plant capacity factor. Recently, because of limited spent fuel storage capacity, increased core power output and the search for increased proliferation resistance, achieving burnup in the 70 to 100 MWd/kg range has attracted considerable attention. However the implications of this initiative have not been fully explored; hence this work defines the practical issues for high-burnup PWR fuels based on neutronic, thermal hydraulic and economic considerations as well as spent fuel characteristics. In order to evaluate the various high burnup fuel design options, an improved MCNP-ORIGEN depletion program called MCODE was developed. A standard burnup predictor-corrector algorithm is implemented, which distinguishes MCODE from other MCNP-ORIGEN linkage codes. Using MCODE, the effect of lattice design (moderation effect) on core design and spent fuel characteristics is explored. Characterized by the hydrogen-to-heavy-metal ratio (H/HM), the neutron spectrum effect in UO2/H2O lattices is investigated for a wide range of moderation, from fast spectra to over-thermalized spectra. It is shown that either wetter or very dry lattices are preferable in terms of achievable burnup potential to those having an epithermal spectrum. Wet lattices are the preferred high burnup approach due to improved proliferation resistance. The constraint of negative moderator temperature coefficient (MTC) requires that H/HM values (now at 3.4) remain below ~6.0 for PWR lattices. Alternative fuel choices, including the conventional solid pellets, central-voided annular pellets, Internally- & eXternally-cooled Annular Fuel (IXAF), and different fuel forms are analyzed to achieve a wetter lattice. Although a wetter lattice has higher burnup potential than the reference PWR lattice, the requirement of a fixed target cycle energy production necessitates higher initial fuel enrichments to compensate for the loss of fuel mass in a wetter lattice. Practical issues and constraints for the high burnup fuel include neutronic reactivity control, heat transfer margin, and fission gas release. Overall the IXAF design appears to be the most promising approach to realization of high burnup fuel. High-burnup spent fuel characteristics are compared to the reference spent fuel of 33 MWd/kg, representative of most of the spent fuel inventory. Although an increase of decay power and radioactivity per unit mass of initial heavy metal is immediately observed, the heat load (integration of decay power over time) per unit electricity generation decreases as the fuel discharge burnup increases. The magnitude of changes depends on the time after discharge. For the same electricity production, not only the mass and volume of the spent fuel are reduced, but also, to a lesser extent, the total heat load of the spent fuel. Since the heat load in the first several hundred years roughly determines the capital cost of the repository, a high burnup strategy coupled with adequate cooling time, may provide a cost-reduction approach to the repository. High burnup is beneficial to enhancing the proliferation resistance. The plutonium vector in the high-burnup spent fuel is degraded, hence less attractive for weapons. For example, the ratio of Pu-238 to Pu-239 increases with burnup to the 2.5 power. However, the economic benefits are uncertain. Under the current economic conditions, the PWR fuel burnup appears to have a shallow optimum discharge burnup between 50 and 80 MWd/kg. The actual minimum is influenced by the financing costs as well as the cost of refueling shutdowns. Since the fuel cycle back-end benefits will accrue to the federal government, the current economic framework, such as the waste fee based on the electricity produced rather than volume or actinide content, does not create an incentive for utilities to increase burnup. Different schemes exist for fuel management of high burnup PWR cores. For the conventional core design, a generalized enrichment-burnup correlation (applicable between 3 w/o and 20 w/o) was produced based on CASMO/SIMULATE PWR core calculations. Among retrofit cores, increasing the number of fuel batches is preferred over increasing the cycle length due to nuclear fuel cycle economic imperatives. For future core designs, a higher power-density core is a very attractive option to cut down the busbar cost. The IXAF concept possesses key design characteristics that provide the necessary thermal margins at high core power densities. In this regard, the IXAF fuel deserves further investigation to fully exploit its high burnup capability.
Download or read book World Nuclear Capacity and Fuel Cycle Requirements written by and published by . This book was released on 1993-11 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Integrating the Back End of the Nuclear Fuel Cycle written by and published by . This book was released on 2014 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Front End of the Nuclear Fuel Cycle written by Lance N. Larson and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Future of Nuclear Fuel Cycle written by and published by . This book was released on 2011 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In this analysis we have presented a method that provides insight into future fuel cycle alternatives by clarifying the complexity of choosing an appropriate fuel cycle in the context of the distribution of burdens and benefits between generations. The current nuclear power deployment practices, together with three future fuel cycles were assessed."--Page 227.
Download or read book Technical Approaches for the Management of Separated Civilian Plutonium written by IAEA and published by International Atomic Energy Agency. This book was released on 2023-05-19 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication aims to outline credible technical options for managing separated plutonium. There is no attempt to rank or rate any of the options, instead the intent is to inform the reader of the technical merits of the various options and the state of their development. It is primarily focused on Member States that have adopted a closed fuel cycle policy but can also be of value to other Member States, specifically their decision makers and other stakeholders involved in potential future nuclear fuel cycles, by informing them on life cycle options and energy policy.
Download or read book Managing the Nuclear Fuel Cycle written by Mary Beth Nikitin and published by DIANE Publishing. This book was released on 2009 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: (1) Introduction; (2) Renewed Interest in Nuclear Power Expansion: (a) Worldwide Nuclear Power Status; (b) Nuclear Fuel Services Market: Yellowcake; Conversion; Enrichment; Fuel Fabrication; (c) Final Stages of the Fuel Cycle; (d) Waste Disposal and Energy Security; (3) Proposals on the Fuel Cycle: Pres. Bush¿s '04 Proposal; Discussions in the Nuclear Suppliers Group; El Baradei Proposal; IAEA Experts Group/INFCIRC/640; Putin Initiative; Six Country Concept; IAEA Fuel Bank; Congress. Support; World Nuclear Assoc.; IAEA Standby Arrange. System; Multilateral Enrichment Sanctuary Project; Enrichment Bonds; Global Nuclear Energy Partnership; (4) Comparison of Proposals; (5) Prospects for Implementing Fuel Assurance Mechanisms.
Download or read book Safety Related Issues of Spent Nuclear Fuel Storage written by North Atlantic Treaty Organization. Public Diplomacy Division and published by Springer Science & Business Media. This book was released on 2007-05-09 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains papers from a NATO-sponsored workshop in Almaty in September 2005, which discussed safety-related issues of storing spent nuclear fuel. Fifteen papers cover aluminum-clad fuel discharged from research reactors worldwide, while five papers examine stainless steel-clad fuel from fast reactors, and two Zircaloy-clad fuel from commercial light-water reactors.
Download or read book Backend of the Fuel Cycle written by George W. Cunningham and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy and Water Development Appropriations for 2015 National Nuclear Security Administration energy weapons activities defense nuclear nonproliferation and naval reactors written by United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water Development and published by . This book was released on 2014 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Fuel Cycle Simulation System VISTA written by International Atomic Energy Agency and published by IAEA. This book was released on 2007 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Nuclear Fuel Cycle Simulation System (VISTA) is a simulation system which estimates long term nuclear fuel cycle material and service requirements as well as the material arising from the operation of nuclear fuel cycle facilities and nuclear power reactors. It is a scenario based simulation tool which can model several nuclear fuel cycle options including existing nuclear power reactor types and future possible reactor types. The past operations of the power reactors and fuel cycle facilities can be modelled in the system, in order to estimate the current amount of spent fuel stored or total Pu in stored spent fuel. It can also accept future projections for nuclear power and other scenario parameters in order to predict future fuel cycle material requirements.The model has been designed to be an optimum mixture of simplicity, speed and accuracy. It does not require too many input parameters if the purpose is just to compare the requirements for selected scenarios. Furthermore, the accuracy of the system can be improved by introducing more detailed and correct sets of input parameters.
