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cathodic protection system

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Published: 01 January 2006
Fig. 36 Electrical circuit analog of reinforced-concrete cathodic protection system components. (a) Anode is embedded or affixed to structure. (b) Anodes installed remote from the reinforced-concrete structure. ICCP, impressed-current cathodic protection; T/R, transformer/rectifier More
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Published: 01 January 2006
Fig. 15 Cathodic protection system for a water storage tank. Source: Ref 57 More
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Published: 01 January 2003
Fig. 1 Cathodic-protection system for a buried steel tank. (a) The original design that caused local failure of a nearby unprotected buried pipeline by stray-current corrosion. (b) Improved design. Installation of a second anode and an insulated buss connection provided protection for both More
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Published: 01 January 2006
Fig. 9 Thermoelectric generator used to power cathodic protection systems in remote locations. Source: Ref 50 More
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Published: 01 January 2003
Fig. 2 Simplified layouts for cathodic protection systems. (a) Impressed current cathodic protection system (b) Galvanic or sacrificial cathodic protection system More
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Published: 01 January 2006
Fig. 37 System components for cathodic protection. (a) Impressed current. (b) Sacrificial or galvanic system More
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004114
EISBN: 978-1-62708-184-9
... Abstract This article describes two principal methods for detecting well casing corrosion, namely, metal-loss tools and casing current measurement, as well as their limitations and advantages. It discusses the factors to be considered in designing well casing cathodic protection systems...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004210
EISBN: 978-1-62708-184-9
... proper material selection, protective coatings, cathodic protection systems, use of inhibitors, use of nonmetallic materials, and control of the environment. The article reviews the aspects of corrosion that tend to be unique to corrosion as encountered in applications involving oil and gas exploration...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003608
EISBN: 978-1-62708-182-5
... scenarios and sources of stray current along with ways to detect it and prevent the type of corrosion it can cause. accelerated corrosion cathodic protection system induced electrical current stray-current corrosion STRAY-CURRENT CORROSION is caused by an externally induced electrical current...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004109
EISBN: 978-1-62708-184-9
... Abstract Cathodic protection (CP) is an electrochemical means of corrosion control widely used in the marine environment. This article discusses two types of CP systems: impressed current systems and sacrificial anode (passive) systems. It describes the anode materials used in these systems...
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Published: 01 January 2006
Fig. 13 Rectifier with remote monitoring system (RMU) for use as part of an elevated water tower cathodic protection system for water side corrosion protection. More
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Published: 01 January 2006
Fig. 45 Directly applied thermal-sprayed zinc sacrificial cathodic protection system protecting both exposed and embedded reinforcement More
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003697
EISBN: 978-1-62708-182-5
... the oxidation reaction in a galvanic cell is concentrated at the anode, which suppresses corrosion of the cathode in the same cell. Figure 1 shows a simple cathodic protection system. The steel pipeline is cathodically protected by its connection to a sacrificial magnesium anode buried in the same soil...
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Published: 01 January 2003
Fig. 3 Schematic of an anodic protection system. One or more cathodes, a reference electrode, a potential sensing and controlling circuit, and a dc power supply are required for each anodic protection system. The vessel wall is made the anode of the circuit by current forced between More
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Published: 01 January 2003
Fig. 3 Evans diagrams for cathodic protection (CP) systems. (a) Diagram for an impressed current CP system protecting a steel structure in an oxygenated neutral or basic environment using an inert anode. (b) Diagram for a galvanic or sacrificial CP system protecting a steel structure More
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004113
EISBN: 978-1-62708-184-9
... the tank is in contact with the soil. This article describes the soil characteristics and addresses cathodic protection (CP) criteria for submerged metallic piping systems. It provides information on the data required for designing a CP system, alone or in conjunction with a protective coating system...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003709
EISBN: 978-1-62708-182-5
... Simplified layouts for cathodic protection systems. (a) Impressed current cathodic protection system (b) Galvanic or sacrificial cathodic protection system Sacrificial CP (SACP)—also known as galvanic CP—protects the structure by coupling the structure to a consumable anode of a more active material...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004100
EISBN: 978-1-62708-184-9
... or submerged structure, most often a pipeline. Close interval surveys are used to assess the performance and operation of cathodic protection systems. Additional benefits include identifying areas of inadequate CP or excessive polarization, locating medium-to-large defects in coatings on existing or newly...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004120
EISBN: 978-1-62708-184-9
... design and cathodic protection systems, and certification programs for individuals and companies involved in industrial painting ISO: industrial painting surface preparation QA requirements SAE International: SAE Aerospace Material Specifications (AMS) and SAE J Series Ground Vehicle Standards...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005709
EISBN: 978-1-62708-171-9
... ) is known to sacrificially protect more than 900 cm 2 (140 in. 2 ) of exposed steel in a salt-containing environment. When used in conjunction with a traditional cathodic protection system, the use of these coatings also can reduce the cathodic current drainage, thus reducing the requirement...