Download or read book Implications of Power Uprates on Safety Margins of Nuclear Power Plants IAEA TECDOC Series written by International Atomic Energy Agency and published by . This book was released on 2004 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication addresses the specific topics relating to the utilization of safety margins for nuclear power power plant (NPP) uprates. Progress made in the development and application of modern computer codes for safety analysis and better understanding of phenomena involved in plant design and operation enable analysts to determine licensing margins with higher precision. There is a general tendency for utilities to take advantage of unnecessarily large conservatism in safety analyses and to utilize them for reactor power uprates, better utilization of nuclear fuel, higher operational flex.

Download or read book Implications of Power Uprates on Safety Margins of Nuclear Power Plants written by International Atomic Energy Agency and published by IAEA. This book was released on 2004 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dated September 2004

Download or read book Power Uprate in Nuclear Power Plants written by IAEA (Corporate Author) and published by . This book was released on 2011 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: The process of increasing the licensed power level of a commercial nuclear power plant (NPP) is called 'Power Uprate'. In most cases this is an economic way of producing more electricity in a nuclear power plant, while maintaining adequate safety, design and operational margins. There are a number of options for uprating the power level and these are discussed in this publication. Furthermore it provides information on current trends, licensing aspects, monitoring, lessons learned from many countries, verification technology, and the associated side effects.

Download or read book Power Uprate in Nuclear Power Plants written by International Atomic Energy Agency and published by . This book was released on 2011 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The process of increasing the licensed power level of a commercial nuclear power plant (NPP) is called 'Power Uprate'. In most cases this is an economic way of producing more electricity in a nuclear power plant, while maintaining adequate safety, design and operational margins. There are a number of options for uprating the power level and these are discussed in this publication. Furthermore it provides information on current trends, licensing aspects, monitoring, lessons learned from many countries and verification technology."--Provided by publisher.

Download or read book Maximizing Nuclear Power Plant Performance Via Mega uprates and Subsequent License Renewal written by Jacob Dominic DeWitte and published by . This book was released on 2014 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this thesis is to develop a methodology to evaluate the engineering and economic implications of maximizing performance of the United States' commercial fleet of nuclear power plants. This methodology addresses aggressive power uprates and life extensions afforded by advances in the state of the art of nuclear technology. America's commercial nuclear power plants were initially licensed for 40 years. A successful license renewal program is being executed to extend operational lifetimes to 60 years, which has supported the installation of more than 7000 MWe of generating capacity via power uprates. Yet improvements in instrumentation, analytical methods, operational strategies, materials, components, systems, and fuels enable plant operators to consider simultaneously extending plant lifetimes to 80 years, and further increasing plant generating capacity. Extending plant lifetimes requires certain plant structures, systems, and components (SSC) to be refurbished or replaced. Performing these changes with other plant upgrades required to provide a 25% or more power increase - a mega-uprate - can lead to improved returns and savings for investors, rate payers, and operators over the remainder of the plant's lifetime provided confidence in the plant's ability to operate through the remainder of the extended life can be demonstrated. A methodology was developed in this thesis to enable the analysis of the tradeoffs and implications of performing life extensions and mega-uprates together using probabilistic methods to address the uncertainties associated with these large-scale projects. This methodology evaluates the integrated design and capital asset management strategies for nuclear power plants to support decision-making to aggressively uprate and upgrade plants considering multivariate criteria, uncertainties, and multiple time-dependent options. Such a capability has significant value for evaluating future refurbishment and uprate options. This thesis resolves several outstanding design and analysis issues surrounding large-scale projects such as large power uprates, refurbishment, modernization, and subsequent license renewal by: (1) proposing an improved statistical treatment of life-limiting component uncertainties; (2) evaluating plant-wide design approaches to realize power uprates greater than 20%; (3) improving the treatment of cost uncertainties, particularly those that arise from technology risk; (4) implementing an integrated decision framework that quantifies and propagates uncertainties; and (5) enhancing the method's accuracy and applicability by incorporating material improvements in the state of knowledge of the conditions that affect the plant's performance. The methodology was implemented via a suite of computer codes referred to as the Integrated Plant Lifetime and Uprate Model - IPLUM - which was used to aid with these analyses. Results of this thesis suggest that most nuclear power plants are capable of operating up to 80 years without replacing or refurbishing major life-limiting structures provided no major construction defects are introduced. Most PWRs can achieve 25%-40% uprates without introducing unfeasible design modifications. This thesis suggests that a four-loop Westinghouse plant can realize a 25% power uprate for a mean cost of about $1100/kWe installed. Additionally, new fuel technologies such as accident-tolerant cladding and higher density fuels may reduce the capital costs of these projects by increasing safety margins which reduces the need upgrade or replace plant systems. Combined life extension and mega-uprates may enable plant operators to install more than 20 GWe of nuclear capacity for less than the cost of building equivalent capacity in the form of new large reactors or small modular reactors. Mega-uprates also enable the expansion of carbon-free energy production with potentially superior economics to fossil fuel plants, while also enabling more flexible operational strategies such as load following. Additionally, the risk metrics of adding capacity via life extension and mega-uprates are reduced by upgrading existing plants instead of building new plants. Ultimately, the methods developed and used in this thesis highlight the sensitivities of a combined power uprate and life extension to: 1) plant degradation models and data; 2) technological readiness of high-performance plant components and systems; 3) experience with large power uprates; 4) cost uncertainties due to market conditions and technology risk; and 5) future energy prices. Perturbations in any of these areas may introduce enough downside risk to negate the decision to implement these design options. Therefore it is essential that plant operators use confirmed plant condition information and identify contingencies specific to their plant, plans, and projects. Furthermore, a principal result of this work is enhanced quantification and characterization of the uncertainties associated with power uprates. The unique features of the net present value and return on investment probability distributions produced by these analyses provide improved insights into the risks and rewards of large power uprates, which will allow plant owners to better understand and manage these risks.

Download or read book Basic Safety Principles for Nuclear Power Plants written by International Nuclear Safety Advisory Group and published by . This book was released on 1999 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present report is a revision of Safety Series No. 75-INSAG-3 (1988), updating the statements made on the objectives and principles of safe design and operation for electricity generating nuclear power plants. It includes the improvements made in the safety of operating nuclear power plants and identifies the principles underlying the best current safety policies to be applied in future plants. It presents INSAG's understanding of the principles underlying the best current safety policies and practices of the nuclear power industry.

Download or read book Light Water Reactor Sustainability Program Power Uprate Research and Development Strategy written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The economic incentives for low-cost electricity generation will continue to drive more plant owners to identify safe and reliable methods to increase the electrical power output of the current nuclear power plant fleet. A power uprate enables a nuclear power plant to increase its electrical output with low cost. However, power uprates brought new challenges to plant owners and operators. These include equipment damage or degraded performance, and unanticipated responses to plant conditions, etc. These problems have arisen mainly from using dated design and safety analysis tools and insufficient understanding of the full implications of the proposed power uprate or from insufficient attention to detail during the design and implementation phase. It is essential to demonstrate that all required safety margins have been properly retained and the existing safety level has been maintained or even increased, with consideration of all the conditions and parameters that have an influence on plant safety. The impact of the power uprate on plant life management for long term operation is also an important issue. Significant capital investments are required to extend the lifetime of an aging nuclear power plant. Power uprates can help the plant owner to recover the investment costs. However, plant aging issues may be aggravated by the power uprate due to plant conditions. More rigorous analyses, inspections and monitoring systems are required.

Download or read book The Accident Hazards of Nuclear Power Plants written by Richard E. Webb and published by . This book was released on 1976 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Arguing that the accident risk of present-day nuclear power plants has not been scientifically established, a nuclear-reactor engineer assesses three major types of reactors being used and developed in the United States and explores the potential consequences of accidents.

Download or read book Safety Margins of Operating Rectors written by M. Antila and published by International Atomic Energy Agency. This book was released on 2003 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: This TECDOC deals with a basic concept of safety margins and their role in assuring safety of nuclear Installations. The document describes capabilities of thermal hydraulic computer codes used to determine safety margins, evaluation of uncertainties, methods for safety margin evaluation and utilization of safety margins in operation and modifications of nuclear power plants.

Download or read book Safety Aspects of Nuclear Power Plants in Human Induced External Events written by and published by . This book was released on 2017 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Safety of Nuclear Power Plants written by International Atomic Energy Agency and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: On the basis of the principles included in the Fundamental Safety Principles, IAEA Safety Standards Series No. SF-1, this Safety Requirements publication establishes requirements applicable to the design of nuclear power plants. It covers the design phase and provides input for the safe operation of the power plant. It elaborates on the safety objective, safety principles and concepts that provide the basis for deriving the safety requirements that must be met for the design of a nuclear power plant. Contents: 1. Introduction; 2. Applying the safety principles and concepts; 3. Management of safety in design; 4. Principal technical requirements; 5. General plant design; 6. Design of specific plant systems.

Download or read book Nuclear Power Plant Life Management and Longer term Operation written by OECD Nuclear Energy Agency and published by OECD Publishing. This book was released on 2006 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: On cover and title page: Nuclear development

Download or read book Understanding and Mitigating Ageing in Nuclear Power Plants written by Philip G Tipping and published by Elsevier. This book was released on 2010-10-26 with total page 953 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant life management (PLiM) is a methodology focussed on the safety-first management of nuclear power plants over their entire lifetime. It incorporates and builds upon the usual periodic safety reviews and licence renewals as part of an overall framework designed to assist plant operators and regulators in assessing the operating conditions of a nuclear power plant, and establishing the technical and economic requirements for safe, long-term operation. Understanding and mitigating ageing in nuclear power plants critically reviews the fundamental ageing-degradation mechanisms of materials used in nuclear power plant structures, systems and components (SSC), along with their relevant analysis and mitigation paths, as well as reactor-type specific PLiM practices. Obsolescence and other less obvious ageing-related aspects in nuclear power plant operation are also examined in depth. Part one introduces the reader to the role of nuclear power in the global energy mix, and the importance and relevance of plant life management for the safety regulation and economics of nuclear power plants. Key ageing degradation mechanisms and their effects in nuclear power plant systems, structures and components are reviewed in part two, along with routes taken to characterise and analyse the ageing of materials and to mitigate or eliminate ageing degradation effects. Part three reviews analysis, monitoring and modelling techniques applicable to the study of nuclear power plant materials, as well as the application of advanced systems, structures and components in nuclear power plants. Finally, Part IV reviews the particular ageing degradation issues, plant designs, and application of plant life management (PLiM) practices in a range of commercial nuclear reactor types. With its distinguished international team of contributors, Understanding and mitigating ageing in nuclear power plants is a standard reference for all nuclear plant designers, operators, and nuclear safety and materials professionals and researchers. Introduces the reader to the role of nuclear power in the global energy mix Reviews the fundamental ageing-degradation mechanisms of materials used in nuclear power plant structures, systems and components (SSC) Examines topics including elimination of ageing effects, plant design, and the application of plant life management (PLiM) practices in a range of commercial nuclear reactor types

Download or read book Nuclear Energy Basic Principles written by International Atomic Energy Agency and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes the rationale and vision for the peaceful use of nuclear energy. The publication identifies the basic principles that nuclear energy systems must satisfy to fulfil their promise of meeting growing global energy demands.

Download or read book Quality and Reliability Aspects in Nuclear Power Reactor Fuel Engineering written by IAEA and published by International Atomic Energy Agency. This book was released on 2024-02-20 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Improved fuel reliability means reduced fuel failures in reactor operation. Fuel failures, with their consequent adverse impact on the environment and requirements for additional waste management, result in costs for remediation, 'failed core' operation and maintenance. Therefore, poor performance of fuel can lead to uncompetitive operational conditions for a nuclear power plant. A revision of the earlier edition, this publication has been significantly extended to support nuclear fuel designers, manufacturers, reactor operators, and fuel engineers and managers on fuel design and design changes, fuel manufacturing, qualification, in-reactor operation, and on-site services to achieve excellence in fuel reliability and performance and safe operation of nuclear fuel under all applicable plant states.

Download or read book NUREG CR written by U.S. Nuclear Regulatory Commission and published by . This book was released on 1977 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Technological and Economic Future of Nuclear Power written by Reinhard Haas and published by Springer. This book was released on 2019-01-01 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book discusses the eroding economics of nuclear power for electricity generation as well as technical, legal, and political acceptance issues. The use of nuclear power for electricity generation is still a heavily disputed issue. Aside from technical risks, safety issues, and the unsolved problem of nuclear waste disposal, the economic performance is currently a major barrier. In recent years, the costs have skyrocketed especially in the European countries and North America. At the same time, the costs of alternatives such as photovoltaics and wind power have significantly decreased. Contents History and Current Status of the World Nuclear Industry The Dramatic Decrease of the Economics of Nuclear Power Nuclear Policy in the EU The Legacy of Csernobyl and Fukushima Nuclear Waste and Decommissioning of Nuclear Power Plants Alternatives: Heading Towards Sustainable Electricity Systems Target Groups Researchers and students in the fields of political, economic and technical sciences Energy (policy) experts, nuclear energy experts and practitioners, economists, engineers, consultants, civil society organizations The Editors Prof. Dr. Reinhard Haas is University Professor of energy economics at the Institute of Energy Systems and Electric Drives at Technische Universität Wien, Austria. PD Dr. Lutz Mez is Associate Professor at the Department for Political and Social Sciences of Freie Universität Berlin, Germany. PD Dr. Amela Ajanovic is a senior researcher and lecturer at the Institute of Energy Systems and Electrical Drives at Technische Universität Wien, Austria.--