Corrosion Control for Offshore Structures by Ramesh Singh - Book - Read Online
This 12 station virtual training program allows you to refresh your CP skills, keep up with current practical techniques and prepare for your CP classes and exams by working through step-by-step, real-life testing scenarios that you could encounter in a live CP environment. This book was written as a helpful instruction for Cathodic Protection Testers, Technicians and Technologists and others who conduct tests on cathodic protection CP systems for on-shore structures. Materials Performance - Corrosion Surveys. Cathodic protection systems are designed to control the corrosion of a metal surface.
While localized damaged surfaces can be patched, ongoing degradation may weaken the integrity of the overall infrastructure. When designed correctly, CP systems can continuously protect infrastructure against corrosion, and techniques such as detailed equipment schematics, system specifications and designs, and field surveys are important when designing a CP system that will provide adequate corrosion protection.
This book examines factors weighed in the design phase of a project for preventing equipment repair or replacement due to corrosion. Written for industrial plant designers and corrosion or materials engineers, it covers materials selection; testing for quality control; and corrosion rate determinations, classifications, and allowances.
Marine Cathodic Protection
This manual provides the design engineer with a single-source guide for designing, installing, and operating deep anode systems. The book also elaborates on how making the right engineering judgment decision relates directly to the successful design of your system. Coatings play an important role in CP design. Cathodic protection of uncoated structures can be implemented, but CP of an uncoated structure is usually not cost effective. Coatings alone are not able to prevent corrosion of the metal underneath because they have a finite life, eventually allowing oxygen, water, and chemicals to reach the substrate.
Typically coating and CP are used simultaneously, as together, they provide the best technical and economic protection. Coating inspection is also crucial because it is often desired to install CP to a structure with its coating in the best condition possible. This will ensure the cathodic protection system performs as designed. The course provides in-depth coverage of both concepts and practical application of identifying interference and interference mitigation techniques.
Students will learn to identify the causes and effects of interference, conduct tests to determine if an interference condition exists, perform calculations required to predict AC interference. This book examines the various mechanisms and forms of corrosion, the prevention and control of corrosion through the use of protective coatings, cathodic protection, and corrosion control by design. The economics of corrosion control and the importance of programmed corrosion control are stressed. The book also covers an easy-to-use method of economic analysis that may be used to evaluate corrosion-related engineering alternatives.
This book provides the reader with a history of generic pipeline coating types, technical information about testing, application and use. There is very practical information about selection and evaluation methods for each type of coating system to help those who design pipeline systems.
There is also discussion of how coatings work with cathodic protection, cathodic protection shielding by coatings and other related issues with the various coating systems related to CP. STG 01 - Reinforced Concrete.
Interference is any electrical disturbance on a metallic structure caused by a stray current. Stray current is defined as current flowing on a structure that is not part of the intended electrical circuit. Stray current can be produced by any system conducting an electric current, such as electrified train tracks of overhead power lines that has two or more points of contact with an electrolyte. Cathodic protection can be designed to mitigate stray current problems. The advantage of CP is that it avoids the use of bonds and the installation and maintenance problems that may accompany them.
The Coatings in Conjunction with Cathodic Protection CCCP course focuses on the control of metallic corrosion by protective coatings and cathodic protection, with coatings as the primary method of control supplemented by cathodic protection. The course will cover the selection, specification, application, testing, and inspection of coatings when used with CP. CCCP provides students with the skills and knowledge to implement and monitor a corrosion control program that utilizes both methods. Corrosion from leaking storage tanks, whether above or below ground, can pollute the environment, threaten public health, and lead to billions of dollars in direct and indirect costs.
Fortunately, corrosion prevention technology exists which can protect storage tanks and keep them structurally sound for years to come. Generally, if the steel surface of a storage tank system is in direct contact with an earthen material soil, gravel, sand, etc , it must be protected from corrosion by a CP system. Government and the public understand the extent to which leaking tanks can damage the environment and threaten public health. In order to prevent environmental contamination, U. The CP 4—Cathodic Protection Specialist Course focuses on the principles and procedures for CP design on a variety of structures for both galvanic and impressed current systems.
Important considerations for CP management are material selection and design to minimize corrosion; and items that should be addressed in CPC planning which affect CPC in design, fabrication and construction, operation and use, and maintenance and sustainability. It is an ideal, comprehensive, practical and yet easy-to-understand set of new definitions, guidelines and suggestions with the main objective being to facilitate the appreciation of the corrosion management concept and the implementation of its processes for and within any non-hydrocarbon industrial sector where corrosion is a major integrity threat.
The primary goal of this guide is to provide pipeline industry managers and nontechnical personnel with an understanding of the basic issue and requirements for managing corrosion threats to onshore transmission pipelines. A comprehensive and detailed reference guide on the integrity and safety of oil and gas pipelines, both onshore and offshore. STG 08 - Corrosion Management. View table of contents. Start reading. Book Description A variable game changer for those companies operating in hostile, corrosive marine environments, Corrosion Control for Offshore Structures provides critical corrosion control tips and techniques that will prolong structural life while saving millions in cost.
Prolong the structural life of your offshore platforms and pipelines Understand critical topics such as cathodic protection and coating as corrosion prevention with mill applied coatings Gain expert insight on a number of NACE and DNV standards and recommended practices as well as ISO and Standard Test Methods. This requires that the process of corrosion is stopped and repairs are carried out.
A Survey Article by ELGARD Corporation
This leads to reduction in production output and reduced revenues, which, when added to the cost of standby labor and fuel losses, becomes a major cost. This, however, does not include the loss of market and public image. Corrosion failures are, by themselves, accidents. However, what is meant by the term accident here is the loss of lives and injuries caused by failures. Corrosion damages can cause severe accidents resulting in injuries and loss of lives. It adds to the economic loss, too.
It also projects adverse public image and loss of market share. In some cases, corrosion is anticipated and portions of a system are designed to address the expected corrosion. However, lack of a full understanding of the corrosion and its impact can lead to over designing of the equipment and system which often leads to an inefficient system, which, in turn, uses excessive energy to operate and maintain the plant, adding this cost to the final product.
Over designing also increases the capital cost of the project; this may include a poorly designed corrosion monitoring and mitigation system. If all these are not convincing reasons to acquire proper knowledge of corrosion then what else could justify the importance of its study? The study of corrosion involves nearly all engineering faculties, including metallurgical, mechanical, aeronautical, chemical, electrical, and civil to name just few, and the application of some pure sciences such as physics, chemistry, biology, and, of course, mathematics and statistics.
So, although this study often appears to incline to metallurgical engineering, where it ultimately rests, it is equally encompassing of all other disciplines of study. This implies that all engineering faculties should have a good program to educate on the primary understanding of the essentials of corrosion. We have very briefly discussed the impact of corrosion and the need for the study of corrosion but, up to this point, we have not defined the term. We need to know what corrosion is, and what conditions are necessary for corrosion to occur. For that we need to find a definition for corrosion.
We also need to know how to understand various types of corrosion and how they can be identified, measured, and mitigated. A keen reader might have noted that we have not associated the word eliminate with corrosion because that is simply impractical if not impossible.
This is because, as we said in the beginning, corrosion is a natural phenomenon, it cannot be eliminated. Recognizing the fact that corrosion is a natural phenomenon, we have used words like control and mitigate in speaking of the impact of corrosion. The effect of corrosion and the damages caused by corrosion in a given environment can only be contained, it cannot be eliminated. In subsequent chapters, various methods of corrosion control, monitoring, and mitigation practices will be discussed, with emphasis on corrosion control and mitigation of offshore structures and pipelines of various descriptions.
Corrosion is defined as the deterioration of a substance or its properties due to interactions between the substance and its environment. Given that the environment plays an important part in corrosion, corrosion mechanisms can be as varied as the environments to which a substance is exposed. This chapter discusses various forms of corrosion, explaining how different corrosion mechanisms damage the material and equipment in industrial structures.
The electrochemical aspect of corrosion is described through figures and tables. The chapter also introduces NACE International, and it considers the relationship between corrosion activity and various types of cells, including salt concentration, differential aeration, differential temperature, and dissimilar electrode.
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