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stray-current corrosion

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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
... Abstract Stray-current corrosion is an accelerated form of corrosion caused by externally induced electric current. It can occur in unprotected pipelines and submerged metal structures located near electric power sources or anywhere voltage differences exist. This article describes common...
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Published: 01 January 2006
Fig. 3 Stray-current corrosion caused by electrically common tanks picking up current from pipeline protection anode bed. Corrosion is most severe where current density leaving tank is highest (arrows). Source: Ref 2 More
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Published: 01 January 2006
Fig. 4 Stray current corrosion caused by foreign pipeline More
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Published: 01 January 2006
Fig. 5 Pipeline that experienced stray current corrosion caused by inverting the electrical leads to a cathodic protection rectifier More
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004115
EISBN: 978-1-62708-184-9
... Abstract Stray current can be defined as a current in structures that are underground or immersed in an electrolyte that most often accelerate corrosion on a structure where a positive current leaves the structure to enter the earth or an electrolyte. This article provides a description...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004167
EISBN: 978-1-62708-184-9
... Abstract This article presents the fundamentals of stray-current corrosion caused by electric rail transit systems. It describes the various corrosion-control design elements for the electric rail system. These design elements include substation spacing and grounding, track and track slab...
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Published: 01 January 2005
Fig. 19 The electrical cable support became loose following several years of service. The maintenance engineer discovered gross thinning of the carbon steel screw. Other supports were completely detached. The shielded area around the fastener favored crevice corrosion. Stray current from More
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Published: 01 January 2005
the welders to the risk of stray-current corrosion. The spacer would have continued to be well suited for its intended purpose. Corrosion form and mechanism Stray-current corrosion Material Type 304 stainless steel Product form Flange spacer More
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003130
EISBN: 978-1-62708-199-3
... and aluminum alloys, including pitting corrosion, intergranular corrosion, exfoliation corrosion, galvanic corrosion, stray-current corrosion, deposition corrosion, crevice corrosion, filiform corrosion, stress-corrosion cracking, corrosion fatigue, and hydrogen embrittlement. The article also presents a short...
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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
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004213
EISBN: 978-1-62708-184-9
... Abstract This article describes the mechanisms of differential corrosion cells corrosion, microbiologically influenced corrosion, and stray direct current corrosion. It discusses the most common causes and contributing factors for corrosion and stress-corrosion cracking, as well as prevention...
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 extent of existing corrosion may include: Visual inspection Measurement of tank plate thickness (ultrasonic testing, coupon testing, physical measurement) Estimated general corrosion rates through electrochemical procedures Magnitude and direction of galvanic or stray current transferred...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003603
EISBN: 978-1-62708-182-5
.... Gaseous corrosion is usually associated with high-temperature environments. Atmospheric corrosion is not considered a part of gaseous corrosion because the corrosion reaction occurs in a thin aqueous layer on the surface of the metal. Galvanic and stray current corrosion are not environment specific...
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Published: 01 January 2006
Fig. 6 Stray current interference. Most of the current that powers dc trains returns to the substation via the rails. A small portion of this currentstrays” from the rails and is discharged into the ground. The pipe-type cable provides a low resistance return path. Localized corrosion can 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
... facilities), anaerobic bacteria supported by drilling mud, and stray-current electrolysis are other possible causes of corrosion ( Ref 2 ). Cementing the casing in place helps reduce the corrosion rate but does not eliminate it ( Ref 3 ). The procedure for predicting the probability and/or rate...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004118
EISBN: 978-1-62708-184-9
... dc trains returns to the substation via the rails. A small portion of this currentstrays” from the rails and is discharged into the ground. The pipe-type cable provides a low resistance return path. Localized corrosion can occur where the stray current is discharged by the pipe-type cable...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004112
EISBN: 978-1-62708-184-9
... the equipment required to perform the CIS. It provides a discussion on the activities that should be performed during the preparation and execution of the CIS. The dynamic stray current identification and compensation by CIS is discussed briefly. The article also explains various factors involved...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003969
EISBN: 978-1-62708-183-2
... Aqueous Corrosion 190 Atmospheric: dewpoint, soils Atmospheric Corrosion 196 Stray current Stray-Current Corrosion 214 Waterline Evaluating Uniform Corrosion 543 High-temperature corrosion Molten salts; glasses Molten Salt Corrosion 216 Liquid metals Liquid Metal...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006040
EISBN: 978-1-62708-172-6
...), graphitic corrosion, and stray-current corrosion. Most cast iron transmission mains date back to the 1960s or much earlier, and accordingly, electrolytic and galvanic corrosion and MIC failures are unlikely if they have not already occurred. Such failure mechanisms typically would have developed when...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003819
EISBN: 978-1-62708-183-2
... corrosion: galvanic coupling, differential aeration, alkalinity, and stray currents. The resistance of lead and lead alloys to corrosion by a wide variety of chemicals is attributed to the polarization of local anodes caused by the formation of a relatively insoluble surface film of lead corrosion products...