Deterministic Prediction of Localized Corrosion Damage in Power Plant Coolant Circuits PDF Download
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Author: DD. Macdonald
Publisher:
ISBN:
Category : Corrosion damage
Languages : en
Pages : 23
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Book Description
The accumulation of damage due to localized corrosion [pitting, stress corrosion cracking (SCC), corrosion fatigue (CF), crevice corrosion (CC), and erosion-corrosion (EC)] in complex industrial systems, such as power plants, refineries, desalination systems, etc., poses a threat to continued safe and economic operation, primarily because of the sudden, catastrophic nature of the resulting failures. Of particular interest in managing these forms of damage is the development of robust algorithms that can be used to predict the integrated damage as a function of time and as a function of the operating conditions of the system. Because complex systems of the same design rapidly become unique, due to differences in operating histories, and because failures are rare events, there is generally insufficient data available on any given system to derive reliable empirical models that capture the impact of all (or even some) of the important independent variables. Accordingly, the models should be, to the greatest extent possible, deterministic with the output being constrained by the natural laws. In this paper, the theory of the initiation of damage, in the form of pitting, is briefly outlined. We then describe the deterministic prediction of the accumulation of damage from SCC and CF in Type 304 SS components in the primary coolant circuits of Boiling Water (Nuclear) Reactors (BWRs) and from pitting and SCC in low-pressure steam turbine disks. These cases have been selected to illustrate the various phases through which localized corrosion damage occurs.
Author: DD. Macdonald
Publisher:
ISBN:
Category : Corrosion damage
Languages : en
Pages : 23
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Book Description
The accumulation of damage due to localized corrosion [pitting, stress corrosion cracking (SCC), corrosion fatigue (CF), crevice corrosion (CC), and erosion-corrosion (EC)] in complex industrial systems, such as power plants, refineries, desalination systems, etc., poses a threat to continued safe and economic operation, primarily because of the sudden, catastrophic nature of the resulting failures. Of particular interest in managing these forms of damage is the development of robust algorithms that can be used to predict the integrated damage as a function of time and as a function of the operating conditions of the system. Because complex systems of the same design rapidly become unique, due to differences in operating histories, and because failures are rare events, there is generally insufficient data available on any given system to derive reliable empirical models that capture the impact of all (or even some) of the important independent variables. Accordingly, the models should be, to the greatest extent possible, deterministic with the output being constrained by the natural laws. In this paper, the theory of the initiation of damage, in the form of pitting, is briefly outlined. We then describe the deterministic prediction of the accumulation of damage from SCC and CF in Type 304 SS components in the primary coolant circuits of Boiling Water (Nuclear) Reactors (BWRs) and from pitting and SCC in low-pressure steam turbine disks. These cases have been selected to illustrate the various phases through which localized corrosion damage occurs.
Author: R. D. Kane
Publisher: ASTM International
ISBN: 0803128746
Category : Metals
Languages : en
Pages : 491
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Book Description
The November 2000 symposium addressed methodologies for evaluation of environmental assisted cracking (EAC) in equipment and structures exposed to corrosive environments, and recent developments in the generation of relevant materials properties data based on laboratory tests. Twenty-seven papers fr
Author: Damien Feron
Publisher: Woodhead Publishing
ISBN: 0081000626
Category : Technology & Engineering
Languages : en
Pages : 386
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Book Description
Stress Corrosion Cracking of Nickel Based Alloys in Water-Cooled Nuclear Reactors: The Coriou Effect presents the latest information on brittle failure of metals in corrosive chemical environments under the influence of tensile stresses. Nickel alloys are more resistant to SCC as well as high temperatures and have been widely used in more challenging environments such as nuclear power plants. However, these alloys can suffer SCC under certain conditions, resulting in component failure. A key figure in understanding the mechanisms of SCC in nickel alloys in water-cooled nuclear reactors is Henri Coriou of the CEA, France’s leading center for nuclear research. This book assesses his work in the context of the latest research on SCC in nickel alloys in nuclear power plants. Up-to-date reviews of recent research findings from leading experts in the field Authoritative and comprehensively reviewed by the Working Party 4 on Nuclear Corrosion Showcases the excellent quality and technical accomplishments of Henri Coriou and CEA
Author: John R. Scully
Publisher:
ISBN:
Category : Cathodic protection
Languages : en
Pages : 290
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Book Description
Author:
Publisher: Elsevier
ISBN: 0444527877
Category : Technology & Engineering
Languages : en
Pages : 3652
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Book Description
This four-volume reference work builds upon the success of past editions of Elsevier’s Corrosion title (by Shreir, Jarman, and Burstein), covering the range of innovations and applications that have emerged in the years since its publication. Developed in partnership with experts from the Corrosion and Protection Centre at the University of Manchester, Shreir’s Corrosion meets the research and productivity needs of engineers, consultants, and researchers alike. Incorporates coverage of all aspects of the corrosion phenomenon, from the science behind corrosion of metallic and non-metallic materials in liquids and gases to the management of corrosion in specific industries and applications Features cutting-edge topics such as medical applications, metal matrix composites, and corrosion modeling Covers the benefits and limitations of techniques from scanning probes to electrochemical noise and impedance spectroscopy
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 17
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Book Description
Pitting corrosion is a form of extremely localized attack resulting in rapid penetration into a metal substrate, and is one of the most destructive and insidious forms of corrosion that occurs in industrial systems. Traditionally, the damage function, i.e., the number of pits versus the pit depth, is measured experimentally, and the development of damage is described using empirical models. In general, the empirical models are successful because the distribution functions employed display great mathematical flexibility, but they require a significant database to achieve reliability. In fact, they are only really successful when the answer is known in advance. In this study, we developed a deterministic method for predicting localized corrosion damage functions for condensing heat exchangers. The method incorporates calculations for the composition of the condensed environment and the electrochemical corrosion potential of the alloy, and includes mechanistic treatments of the nucleation and the growth of pits. The role of the important environmental parameters are identified, such as the chloride concentration and the partial pressure of oxygen. Good agreement is observed between the predicted damage functions and the experimental data.
Author:
Publisher:
ISBN:
Category : Energy development
Languages : en
Pages : 442
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Book Description
Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 1016
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Book Description
Includes all works deriving from DOE, other related government-sponsored information and foreign nonnuclear information.
Author: Z. Szklarska-Smialowska
Publisher:
ISBN:
Category : Corrosion and anti-corrosives
Languages : en
Pages : 456
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Book Description
Author: M. Antila
Publisher: International Atomic Energy Agency
ISBN: 9789201181022
Category : Business & Economics
Languages : en
Pages : 145
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Book Description
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.
