Nuclear Corrosion Modeling

Nuclear Corrosion Modeling
Author: Roy Castelli
Publsiher: Butterworth-Heinemann
Total Pages: 216
Release: 2009-07-22
ISBN: 9781856179348
Category: Technology & Engineering
Language: EN, FR, DE, ES & NL

Nuclear Corrosion Modeling Book Excerpt:

Corrosion in nuclear power plants cause reductions in efficiency and increases in deposit build-up on plant surfaces, making for expensive maintentance and potential radiological health hazards. This book guides studies to predict and minimize corrosion, thus making nuclear power safer and more cost effective. Too often, reliance on empirical models and on-site testing of existing plants makes study and prediction of corrosive effects in nuclear reactors into a pricey and lengthy process. Introducing the experimental procedures, set up, sample preparation and computer modeling suggested in this book will save precious time and resources in a field where the significant time and expense to get and keep plants on-line are two of the chief concerns preventing broader commerical viability. * The only book to focus exclusively on preventing nuclear corrosion * Uses computer modelling to tie together chemical engineering, civil engineering, corrosion science, and nuclear engineering into a cohesive solution to a vexing nucelar problem * Includes all fundamental equations, example data sets and experimental techniques

Nuclear Corrosion Modeling

Nuclear Corrosion Modeling
Author: Roy Castelli
Publsiher: Unknown
Total Pages: 195
Release: 2010
ISBN: 1928374650XXX
Category: Corrosion and anti-corrosives
Language: EN, FR, DE, ES & NL

Nuclear Corrosion Modeling Book Excerpt:

Corrosion in nuclear power plants cause reductions in efficiency and increases in deposit build-up on plant surfaces, making for expensive maintentance and potential radiological health hazards. This book guides studies to predict and minimize corrosion, thus making nuclear power safer and more cost effective. Too often, reliance on empirical models and on-site testing of existing plants makes study and prediction of corrosive effects in nuclear reactors into a pricey and lengthy process.

Nuclear Corrosion Science and Engineering

Nuclear Corrosion Science and Engineering
Author: Damien FERON
Publsiher: Elsevier
Total Pages: 1072
Release: 2012-02-21
ISBN: 085709534X
Category: Technology & Engineering
Language: EN, FR, DE, ES & NL

Nuclear Corrosion Science and Engineering Book Excerpt:

Corrosion of nuclear materials, i.e. the interaction between these materials and their environments, is a major issue for plant safety as well as for operation and economic competitiveness. Understanding these corrosion mechanisms, the systems and materials they affect, and the methods to accurately measure their incidence is of critical importance to the nuclear industry. Combining assessment techniques and analytical models into this understanding allows operators to predict the service life of corrosion-affected nuclear plant materials, and to apply the most appropriate maintenance and mitigation options to ensure safe long term operation. This book critically reviews the fundamental corrosion mechanisms that affect nuclear power plants and facilities. Initial sections introduce the complex field of nuclear corrosion science, with detailed chapters on the different types of both aqueous and non aqueous corrosion mechanisms and the nuclear materials susceptible to attack from them. This is complemented by reviews of monitoring and control methodologies, as well as modelling and lifetime prediction approaches. Given that corrosion is an applied science, the final sections review corrosion issues across the range of current and next-generation nuclear reactors, and across such nuclear applications as fuel reprocessing facilities, radioactive waste storage and geological disposal systems. With its distinguished editor and international team of expert contributors, Nuclear corrosion science and engineering is an invaluable reference for nuclear metallurgists, materials scientists and engineers, as well as nuclear facility operators, regulators and consultants, and researchers and academics in this field. Comprehensively reviews the fundamental corrosion mechanisms that affect nuclear power plants and facilities Chapters assess different types of both aqueous and non aqueous corrosion mechanisms and the nuclear materials susceptible to attack from them Considers monitoring and control methodologies, as well as modelling and lifetime prediction approaches

Modelling Aqueous Corrosion

Modelling Aqueous Corrosion
Author: Kenneth R. Threthewey,Pierre R. Roberge
Publsiher: Springer Science & Business Media
Total Pages: 468
Release: 2012-12-06
ISBN: 9401111766
Category: Science
Language: EN, FR, DE, ES & NL

Modelling Aqueous Corrosion Book Excerpt:

All significant studies agree that aqueous corrosion continues to cost nations dearly in almost every area of technological endeavour. Over the past ten years, microcomputers have facilitated an explosion in the power of modelling as a technique in science and engineering. In corrosion they have enabled better understanding of polarization curves, they have transformed the scope of electrochemical impedance measurements and they have placed a large range of electrochemistry at the fingertips of the corrosion scientist. This book focuses on the models, rather than the computing, which have been made possible during the past decade. Aimed at all those with an interest in corrosion and its control, the book draws together the range of new modelling strands, suggests new avenues of approach and generates further momentum for improvements to corrosion management, whether by increased understanding of atomistic processes or by control of large plant.

Energy Materials Coordinating Committe EMaCC Fiscal Year 2000 Annual Technical Report

Energy Materials Coordinating Committe  EMaCC   Fiscal Year 2000 Annual Technical Report
Author: Anonim
Publsiher: DIANE Publishing
Total Pages: 135
Release: 2022
ISBN: 9781422345634
Category: Electronic Book
Language: EN, FR, DE, ES & NL

Energy Materials Coordinating Committe EMaCC Fiscal Year 2000 Annual Technical Report Book Excerpt:

Computer Modeling of Nuclear Waste Storage Canister Corrosion

Computer Modeling of Nuclear Waste Storage Canister Corrosion
Author: Anonim
Publsiher: Unknown
Total Pages: 135
Release: 1979
ISBN: 1928374650XXX
Category: Electronic Book
Language: EN, FR, DE, ES & NL

Computer Modeling of Nuclear Waste Storage Canister Corrosion Book Excerpt:

Current plans for nuclear waste disposal include placing the waste in a canister to isolate it from the repository environment for 1000 years. Corrosion prediction techniques are currently inadequate to quarantee the canister performance over this length of time. We are attempting to better predict the corrosion process with the help of computer modeling. We developed a program to calculate anodic and cathodic polarization curves using Tafel slopes, equilibrium exchange current densities, and other electrochemical parameters obtained from the experimental corrosion literature. The model generates and displays polarization curves for different values of environmetal parameters such as temperature, pH, and concentrations of pertinent species in the vicinity of the canister material. For the case of uniform corrosion in acidic media, our model predicts corrosion rates in fair agreement with literature values.

The Corrosion of Nuclear Waste Glasses in a Clay Environment

The Corrosion of Nuclear Waste Glasses in a Clay Environment
Author: Anonim
Publsiher: Unknown
Total Pages: 135
Release: 1997
ISBN: 1928374650XXX
Category: Electronic Book
Language: EN, FR, DE, ES & NL

The Corrosion of Nuclear Waste Glasses in a Clay Environment Book Excerpt:

Nuclear Science Abstracts

Nuclear Science Abstracts
Author: Anonim
Publsiher: Unknown
Total Pages: 135
Release: 1975
ISBN: 1928374650XXX
Category: Nuclear energy
Language: EN, FR, DE, ES & NL

Nuclear Science Abstracts Book Excerpt:

Radioactive Waste Management

Radioactive Waste Management
Author: Anonim
Publsiher: Unknown
Total Pages: 135
Release: 1988
ISBN: 1928374650XXX
Category: Electronic Book
Language: EN, FR, DE, ES & NL

Radioactive Waste Management Book Excerpt:

ASM Handbook

ASM Handbook
Author: ASM International. Handbook Committee
Publsiher: Unknown
Total Pages: 1137
Release: 1990
ISBN: 9780871707093
Category: Corrosion and anti-corrosives
Language: EN, FR, DE, ES & NL

ASM Handbook Book Excerpt:

These volumes cover the properties, processing, and applications of metals and nonmetallic engineering materials. They are designed to provide the authoritative information and data necessary for the appropriate selection of materials to meet critical design and performance criteria.

Micro Continuum Modeling of Nuclear Waste Glass Corrosion

Micro Continuum Modeling of Nuclear Waste Glass Corrosion
Author: Anonim
Publsiher: Unknown
Total Pages: 135
Release: 2014
ISBN: 1928374650XXX
Category: Electronic Book
Language: EN, FR, DE, ES & NL

Micro Continuum Modeling of Nuclear Waste Glass Corrosion Book Excerpt:

Selection and Implementation of Deterministic and Probabilistic Models for the Prediction of Stress Corrosion Cracking in Used Nuclear Fuel Containment Material

Selection and Implementation of Deterministic and Probabilistic Models for the Prediction of Stress Corrosion Cracking in Used Nuclear Fuel Containment Material
Author: Sara Elizabeth Ferry
Publsiher: Unknown
Total Pages: 408
Release: 2016
ISBN: 1928374650XXX
Category: Electronic Book
Language: EN, FR, DE, ES & NL

Selection and Implementation of Deterministic and Probabilistic Models for the Prediction of Stress Corrosion Cracking in Used Nuclear Fuel Containment Material Book Excerpt:

Stainless steel canisters encased in vented concrete overpacks are used to store used nuclear fuel at interim spent fuel storage installations in the United States. These storage systems are exposed to the elements. There is concern that, over time, a deliquesced salt film could develop on the stainless steel canister. Such a film can create a corrosive environment in stainless steels. If a stress is present on or in then material, stress corrosion cracking (SCC) could be a possibility. Because the canister welds are not stress-relieved in order to avoid sensitization of the steel, residual stresses are expected to be present in the canisters. Thus, there is interest in determining the likelihood that (a) a sufficiently corrosive film develops on a stainless steel used fuel canister (b) there are sufficiently high stresses in the material at the location of the corrosive film (c) SCC initiates and (d) the crack propagates through the canister wall, resulting in canister failure. This thesis begins with the assumption that a corrosive film has developed on the canister surface, and pits have begun to initiate. It investigates various methods of modeling SCC in the canister wall after the point of corrosion pit initiation. An extensive literature review was carried out in order to understand the different SCC models that currently exist in the literature. A figure-of-merit was developed to decide which models were the most likely to be helpful to the modeling of SCC in used fuel canisters. The figure-of-merit was then used to select the most promising models. These models were then used to write [email protected] simulations that could be used to predict time-to-failure in canisters due to SCC once corrosion pits have begun to grow. The results of these simulations are then considered and compared, and used to inform recommendations for future development of a useful predictive model of SCC in used fuel canisters.

Mechanistic Modelling of the Corrosion Behaviour of Copper Nuclear Fuel Waste Containers

Mechanistic Modelling of the Corrosion Behaviour of Copper Nuclear Fuel Waste Containers
Author: Fraser King,Whiteshell Laboratories
Publsiher: Pinawa, Man. : Whiteshell Laboratories
Total Pages: 16
Release: 1996
ISBN: 9780660166582
Category: Copper
Language: EN, FR, DE, ES & NL

Mechanistic Modelling of the Corrosion Behaviour of Copper Nuclear Fuel Waste Containers Book Excerpt:

Modeling of Corrosion Product Transport in PWR Primary Coolant

Modeling of Corrosion Product Transport in PWR Primary Coolant
Author: Chan Bock Lee
Publsiher: Unknown
Total Pages: 604
Release: 1990
ISBN: 1928374650XXX
Category: Electronic Book
Language: EN, FR, DE, ES & NL

Modeling of Corrosion Product Transport in PWR Primary Coolant Book Excerpt:

Corrosion Induced by Low Energy Radionuclides

Corrosion Induced by Low Energy Radionuclides
Author: Gilbert Bellanger
Publsiher: Elsevier
Total Pages: 700
Release: 2004-12-18
ISBN: 0080530036
Category: Science
Language: EN, FR, DE, ES & NL

Corrosion Induced by Low Energy Radionuclides Book Excerpt:

Nuclear power plants emit radiation and particles across a range of energies. This radiation can cause corrosion to occur in critically important parts of the plant, which can lead to efficiency and safety problems. Gamma rays and neutrons have the highest energies and can break the metal bonds in interior metallic structures causing damage quickly and in easily monitored ways. Consequently these types of radiation and the best alloys to use to mitigate their effects have been extensively researched and their findings applied. However, the same is not true of low energy radiation which effects metal structures in a different way but can still cause appreciable and expensive corrosion. Low energy radiation degrades the passive oxide layers that protect metals. Without this protective layer the metals are easily corroded. This book uses tritium and tritiated water as models to describe the effects of low energy radiation on the corrosion of metals in these environments. Comprehensive coverage of the fields of liquid and gas flow, heat exchange, gas diffusion in materials, and of materials resistance to corrosion is ensures the reader has a full understanding of how these processes effect corrosion in nuclear installations. Such an understanding is essential for the efficient and safe running of all modern plant that uses radioactive material and this book is a critical reference tool for anyone involved in the nuclear power industry or metals research. * Unique coverage of low energy radiation and its corrosive effects in nuclear installations * Provides coverage of basic scientific principles contributing to corrosion * An essential reference for the safe and efficient construction and operation of nuclear installations * Applications in power generation, fuel reprocessing, military and civilian applications. * The first book to present detailed analysis of nuclear corrosion by low energy nuclides * The most complete book available for those serious about understanding corrosion in all its aspects * Keeping you at pace with the new methods that are changing the concept of corrosion in the nuclear industry

Spent Nuclear Fuel and Its Corrosion Products

Spent Nuclear Fuel and Its Corrosion Products
Author: Anonim
Publsiher: Unknown
Total Pages: 10
Release: 2013
ISBN: 1928374650XXX
Category: Electronic Book
Language: EN, FR, DE, ES & NL

Spent Nuclear Fuel and Its Corrosion Products Book Excerpt:

Energy Research Abstracts

Energy Research Abstracts
Author: Anonim
Publsiher: Unknown
Total Pages: 135
Release: 1994-06
ISBN: 1928374650XXX
Category: Power resources
Language: EN, FR, DE, ES & NL

Energy Research Abstracts Book Excerpt:

Electrochemical Corrosion Studies for Modeling Metallic Waste Form Release Rates

Electrochemical Corrosion Studies for Modeling Metallic Waste Form Release Rates
Author: Anonim
Publsiher: Unknown
Total Pages: 26
Release: 2016
ISBN: 1928374650XXX
Category: Electronic Book
Language: EN, FR, DE, ES & NL

Electrochemical Corrosion Studies for Modeling Metallic Waste Form Release Rates Book Excerpt:

The isotope 99Tc is an important fission product generated from nuclear power production. Because of its long half-life (t1/2 = 2.13.105 years) and beta-radiotoxicity ([beta]-= 292 keV), it is a major concern in the long-term management of spent nuclear fuel.1 In the spent nuclear fuel, Tc is present as an alloy with Mo, Ru, Rh, and Pd called the epsilon-phase, the relative amount of which increases with fuel burn-up.2 In some separation schemes for spent nuclear fuel, Tc would be separated from the spent fuel and disposed of in a durable waste form.3 Technetium waste forms under consideration include metallic alloys, oxide ceramics and borosilicate glass.4, 5 In the development of a metallic waste form, after separation from the spent fuel, Tc would be converted to the metal, incorporated into an alloy and the resulting waste form stored in a repository.6 Metallic alloys under consideration include Tc-Zr alloys, Tc-stainless-steel alloys and Tc- Inconel alloys (Inconel is an alloy of Ni, Cr and iron which is resistant to corrosion). To predict the long term behavior of the metallic Tc waste form, understanding the corrosion properties of Tc metal and Tc alloys in various chemical environments is needed but efforts to model the behavior of Tc metallic alloys are limited. 7 One parameter that should also be considered in predicting the long-term behavior of the Tc waste form, is the ingrowth of stable Ru that occurs from the radioactive decay of 99Tc (99Tc "99Ru + [beta]- ). After a geological period of time, significant amount of Ru will be present in the Tc and may affect its corrosion properties. Studying the effect of Ru on the corrosion behavior of Tc is also of importance.

Electrochemical and modelling studies on simulated spent nuclear fuel corrosion under permanent waste disposal conditions

Electrochemical and modelling studies on simulated spent nuclear fuel corrosion under permanent waste disposal conditions
Author: Nazhen Liu
Publsiher: Unknown
Total Pages: 135
Release: 2017
ISBN: 1928374650XXX
Category: Radioactive waste canisters
Language: EN, FR, DE, ES & NL

Electrochemical and modelling studies on simulated spent nuclear fuel corrosion under permanent waste disposal conditions Book Excerpt:

The safety assessment models for the deep geological disposal of spent nuclear fuel require a fundamental understanding of the corrosion of spent fuel in a failed waste container. The overall research goal of this project is to investigate the corrosion of simulated spent fuel under permanent disposal conditions, using both model simulations and experimental investigations. A model for fuel corrosion has been expanded to determine the relative importance of radiolytic hydrogen and hydrogen from corrosion of the steel vessel in suppressing fuel corrosion. It was shown that, for CANDU (CANada Deuterium Uranium) fuel with moderate in-reactor burnup, only micromolar concentrations of hydrogen from steel corrosion are required to completely suppress fuel corrosion. In a partially closed system (i.e., within cracks in the fuel) radiolytic hydrogen alone can suppress corrosion to a negligible level. The model was validated by comparing the calculated corrosion rates with published measurements. Agreement between calculated and measured rates indicated that corrosion is controlled by the rate of radiolytic production of oxidants, in particular hydrogen peroxide, irrespective of the reactivity of the fuel. Experimentally, the influence of rare earth doping on the reactivity of UO2 was investigated. For REIII-doped UO2, the onset of matrix dissolution was accompanied by the enhanced oxidation of the matrix to UIV1{u2212}2xUV2xO2+x. This can be attributed to the onset of tetragonal lattice distortions as oxidation proceeds which leads to the clustering of defects, enhanced diffusion of OI (interstitial oxygen)to deeper locations and destabilization of the fluorite lattice. A further investigation of the doping effect was performed on a series of (U1{u2212}yGdy)O2 materials (y = 0, 0.01, 0.03, 0.05, 0.07 and 0.10). Overall the increase in doping up to 10% does not exert a major influence on reactivity possibly due to the competition between an increase in the number of (Ov)s (oxygen vacancy) and a contraction in the lattice constant.

Sulphur Assisted Corrosion in Nuclear Disposal Systems

Sulphur Assisted Corrosion in Nuclear Disposal Systems
Author: Damien Féron,Bruno Kursten,Frank Druyts
Publsiher: CRC Press
Total Pages: 174
Release: 2020-11-26
ISBN: 1000107116
Category: Technology & Engineering
Language: EN, FR, DE, ES & NL

Sulphur Assisted Corrosion in Nuclear Disposal Systems Book Excerpt:

In the different disposal concepts for high-level nuclear waste, corrosion of the metallic barriers and in particular the overpack/container is a major issue. It is imperative for performance assessment to predict the lifetime of these containers. In the lifetime prediction of metallic barriers for the disposal of high level nuclear waste (HLW) or of spent fuel, the presence of (reduced) sulphur species is an issue of growing importance, as the sulphur species are involved in localised corrosion phenomena. The international workshop on Sulphur-Assisted Corrosion in Nuclear Waste Disposal Systems (SACNUC2008) aimed to provide an exchange of information on the influence of sulphur species on the corrosion of metallic barriers. This workshop was a co-organisation of the Belgian Nuclear Research Centre, SCK*CEN, and the Belgian Agency for the Management of Radioactive Waste and Enriched Fissile Materials, ONDRAF/NIRAS, under the auspices of the European Federation of Corrosion (EFC event N 311). The proceedings are divided into five chapters: Chapter 1 provides a general overview of the disposal concepts of nuclear waste and the role of corrosion. Chapter 2 explains the mechanism of sulphur-induced corrosion processes. This chapter also contains information from outside the nuclear disposal field in which sulphur is known to act as a detrimental factor (e.g. oil and gas industry). Chapter 3 addresses the role of microbial processes in sulphur-assisted corrosion. Chapter 4 covers the modelling of sulphide-assisted corrosion. Chapter 5 is devoted to a panel discussion aiming to identify open issues in the investigation of sulphur-assisted corrosion phenomena and how to incorporate these in robust lifetime prediction of metallic barriers.