Download or read book Consequence Analysis of Spent Nuclear Fuel Reconfiguration Scenarios written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Dose Consequences Arising from the Release of Spent Nuclear Fuel from Dry Storage Casks written by and published by . This book was released on 2013 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: The resulting dose consequences from releases of spent nuclear fuel (SNF) residing in a dry storage casks are examined parametrically. The dose consequences are characterized by developing dose versus distance curves using simplified bounding assumptions. The dispersion calculations are performed using the MELCOR Accident Consequence Code System (MACCS2) code. Constant weather and generic system parameters were chosen to ensure that the results in this report are comparable with each other and to determine the relative impact on dose of each variable. Actual analyses of site releases would need to accommodate local weather and geographic data. These calculations assume a range of fuel burnups, release fractions (RFs), three exposure scenarios (2 hrs and evacuate, 2 hrs and shelter, and 24 hrs exposure), two meteorological conditions (D-4 and F-2), and three release heights (ground level - 1 meter (m), 10 m, and 100 m). This information was developed to support a policy paper being developed by U.S. Nuclear Regulatory Commission (NRC) staff on an independent spent fuel storage installation (ISFSI) and monitored retrievable storage installation (MRS) security rulemaking.
Download or read book Resilience Analysis of Nuclear Fuel Cycle Scenarios written by Weifeng Zhou and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nuclear fuel cycle systems, composed of reactors, various fuels, and different cycle facilities, are complex and in constant evolution. Thanks to their abilities to make projections of industrial strategies and to assess the associated impacts on nuclear fuel cycle systems, nuclear fuel cycle scenarios are considered as a powerful tool for decision-making analyses. Scenario studies assist decision-makers in identifying the strengths and weaknesses of different strategies for a nuclear fleet evolution and then proposing possible evolution trajectories for the nuclear industry according to constraints from physics, economics, industry, etc.However, scenario studies are usually subject to different kinds of uncertainties, especially the so-called “deep uncertainty.” This concept refers to “unknown unknowns,” which scenario study results are unsuited to address. Indeed, under the impact of deep uncertainty, i.e., disruptions, the trajectories proposed by the scenario studies can become invalid: they do not satisfy the scenario constraints anymore.In order to make the trajectories valid again after disruption due to uncertainty, the first possibility is to study the resistance strategy. The resistance strategy consists of finding scenario trajectories that remain valid under the impact of uncertainty without exogenous readjustments of trajectories. However, the resistance capabilities of scenarios are limited: resistance is only adapted to uncertainties with small impact, while the impact of deep uncertainty is usually strong.As a complementary solution to the resistance strategy, we propose using resilience strategies. The resilience strategies consist of using predesigned measures, called “levers,” to readjust the scenario trajectory when the resistance strategy is insufficient. We aim to use the effect of the exogenous readjustments of trajectories, which are introduced through the levers, to counterbalance the impact of disruption and remain the trajectory valid. To evaluate the resilience of scenarios, we developed a resilience analysis framework, based on the start-of-the-art SUR (Stepwise Uncertainty Reduction) algorithm.We applied the developed resilience strategy to two scenario problems in which a simplified French nuclear fleet with uncertain power reduction is considered. To define the validity of trajectory, we imposed five constraints about the reprocessing plant utilization ratio, plutonium separation, plutonium content in MOX fuel, and spent fuel storage. In each problem, we gave a prior trajectory supposed as a result of a scenario study with a hypothesis to keep the installed power constant in the future. We assumed that following the disruption of the study context, the total electricity power is disrupted and reduced in the future. The results showed that the prior trajectories in both problems are resilient for the assumed disruptions: it is possible to keep the prior trajectories valid by readjusting the reprocessing and the MOX fuel loadings in reactors. Such results demonstrate the evolutions of the nuclear fleet in the prior trajectories are flexible in front of the disruption of total electricity power.
Download or read book Long Lived Legacy Managing High Level and Transuranic Waste at the DOE Nuclear Weapons Complex written by and published by DIANE Publishing. This book was released on with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Fuel Cycle Scenarios for Transmutation of Nuclear Waste written by Alexandra Ålander and published by . This book was released on 2005 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Emerging Nuclear Energy Ststems Icenes 93 Proceedings Of The Seventh International Conference written by H Yasuda and published by World Scientific. This book was released on 1994-04-27 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt: To overcome the problems of system theory and network theory over real field, this book uses matrices over the field F(z) of rational functions in multi-parameters describing coefficient matrices of systems and networks and makes systems and network description over F(z) and researches their structural properties: reducible condition of a class of matrices over F(z) and their characteristic polynomial; type-1 matrix and two basic properties; variable replacement conditions for independent parameters; structural controllability and observability of linear systems over F(z); separability, reducibility, controllability, observability and structural conditions of networks over F(z), and so on. This book involves three subjects: systems, networks and matrices over F(z), which is an achievement of interdisciplinary research.
Download or read book Nuclear Spent Fuel Management Scenarios written by J. Dufek and published by . This book was released on 2006 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Uncertainty Propagation in Nuclear Fuel Cycle Scenarios written by Guillaume Krivtchik and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nuclear scenario studies model nuclear fleet over a given period. They enablethe comparison of different options for the reactor fleet evolution, and the management ofthe future fuel cycle materials, from mining to disposal, based on criteria such as installedcapacity per reactor technology, mass inventories and flows, in the fuel cycle and in the waste.Uncertainties associated with nuclear data and scenario parameters (fuel, reactors and facilitiescharacteristics) propagate along the isotopic chains in depletion calculations, and throughoutthe scenario history, which reduces the precision of the results. The aim of this work isto develop, implement and use a stochastic uncertainty propagation methodology adaptedto scenario studies. The method chosen is based on development of depletion computationsurrogate models, which reduce the scenario studies computation time, and whose parametersinclude perturbations of the depletion model; and fabrication of equivalence model which takeinto account cross-sections perturbations for computation of fresh fuel enrichment. Then theuncertainty propagation methodology is applied to different scenarios of interest, consideringdifferent options of evolution for the French PWR fleet with SFR deployment.
Download or read book Health and Safety Impacts Related to the Management of Spent Nuclear Fuels written by and published by . This book was released on 1996 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Under the Nuclear Waste Policy Act of 1982, as amended, the U.S. Department of Energy is responsible for managing the disposal of spent nuclear fuel from civilian nuclear power plants. Deployment of a multipurpose canister (MPC) system for dry storage of commercial spent nuclear fuel at reactor sites was determined to be an option for managing spent nuclear fuel until either a permanent repository or interim central storage facility (commonly called a Monitored Retrievable Storage Facility, or MRS) becomes available. Routine health and safety impacts to workers from handling and storage operations at nuclear facilities for four separate scenarios were evaluated for the MPC system: an on-time repository with an MRS; an on-time repository with no MRS; a delayed repository with an MRS; and a delayed repository with no MRS. In addition to evaluating the MPC system, five alternatives were analyzed. These included the No Action Alternative (NAA), Current Technology (CTr), the Transposable Storage Cask (TSC), the Dual-Purpose Canister (DPC), and the Small MPC (SmMPC). Health effects are expressed as collective doses in person- rem per year and risks as latent cancer fatalities per year for incident-free operations for each alternative and scenario. Results show that both dose and risks to workers vary as much as 68% among scenarios and alternatives. Although dose estimates and risks fall below limits for radiation dose to workers as specified in Title 10, Part 20, of the Code of Federal Regulations, additional measures could be applied to reduce potential doses and resultant health risk. 5 refs., 2 tabs.
Download or read book Reprocessing of Spent Nuclear Fuel written by Todd P. Lagus and published by . This book was released on 2005 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Long lived Legacy written by and published by . This book was released on 1991 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamic Criticality Analyses in Nuclear Waste Repository Design written by Luca Joseph Gratton and published by . This book was released on 2000 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994 with total page 1032 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
Download or read book Radioactive Waste Management written by and published by . This book was released on 1981 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Topical Meeting on Safety of Operating Reactors written by and published by . This book was released on 1995 with total page 870 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Computer Security Incident Response Planning at Nuclear Facilities written by International Atomic Energy Agency and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this publication is to assist member states in developing comprehensive contingency plans for computer security incidents with the potential to impact nuclear security and/or nuclear safety. It provides an outline and recommendations for establishing a computer security incident response capability as part of a computer security programme.
Download or read book Congressional Record written by United States. Congress and published by . This book was released on 1971 with total page 1226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
