1-20 of 123 Search Results for

stray currents

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
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
... Fig. 2 Illustration of cathodic stray-current interference. CP, cathodic protection Fig. 3 Illustration of anodic stray-current interference. CP, cathodic protection Fig. 1 Schematic of a parallel interference path Fig. 4 Example of dynamic interference from...
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
... 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...
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
...Risk assessment matrix Table 1 Risk assessment matrix Based on a selected current density of 0.001 A/ft 2 for an acceptable corrosion rate of the pipe. See text for details. Design separation pipe-to-rail, ft Maximum allowable stray current, mA Equivalent short resistance, Ω Risk...
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
... with a conventional rectifier and casing thickness. Total current is 15.3 A. Fig. 13 Typical cathodic protection installation Fig. 14 Direct-current stray-current interference. (a) Stray-current pickup near top with discharge downhole. (b) Stray-current pickup downhole with discharge near top. CP...
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
... and execution of the CIS. The dynamic stray current identification and compensation by CIS is discussed briefly. The article also explains various factors involved in the validation of CIS data. It concludes with information on CIS data interpretation. Selected References Selected References...
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
.... 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 occur...
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
... 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. The article also provides information...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003130
EISBN: 978-1-62708-199-3
..., 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 note on aluminum clad products and corrosion at joints. Selected References Selected...
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
... magnification: 100× Fig. 1 Example of external corrosion of an underground pipeline. Lower quadrant of pipeline shown after coating removal and abrasive cleaning Fig. 3 Iron-related bacteria creating a differential oxygen and pH cell on a metal surface Fig. 4 Stray current...
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
... voltage Fixed, limited Adjustable Available current Limited, based on anode size Adjustable Satisfied current requirement Small High Suitable environment Lower resistivity environments Higher resistivity environments Stray-current consideration Usually no interference Must consider...
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
... in coatings on existing or newly constructed pipelines, locating areas of stray-current pickup and discharge, identifying possible shorted casings and defective electrical isolation devices, locating possible high-pH stress-corrosion cracking risk areas, and locating areas at risk of external corrosion...
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: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003703
EISBN: 978-1-62708-182-5
..., plastic deformation, sensitization) Environmental sources Conductivity and resistivity of fluid; changes in temperature; velocity and direction of fluid flow; aeration; ambient environment (seasonal changes, etc.) Miscellaneous sources Stray currents; conductive paths; composites (e.g., concrete...
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
... and break down the normal passive oxide film on ferrous metals such as ductile iron, whereas the corrosion rate is largely driven by the oxygen concentration at the corroding surface. Another common failure mechanism for ductile iron pipe is stray-current corrosion. This is prevalent in cities that have...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003599
EISBN: 978-1-62708-182-5
... to cause dendritic growth and anode passivation. Furthermore, it tends to cause entrapment of electrolyte and slimes on the cathode and lowers cathode purity. Each refinery must balance these competing economic factors. Anode-to-cathode short circuits, stray current to ground, and reoxidation of cathode...
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
... salt and liquid metal environments. 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...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004139
EISBN: 978-1-62708-184-9
... into the bilge. Most noncommercial owners prefer to paint the topside for aesthetic reasons and to reduce glare and heating effects. Aluminum is a highly active metal and less noble than any of the other metals commonly used for boats. Galvanic and electrolytic (stray current) corrosion is possible. Metal...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003598
EISBN: 978-1-62708-182-5
... fatigue strength, possibly due to stray current attack on the surface, which leaves a series of pits that would act as sites for fatigue crack initiation ( Ref 9 ). Metal removal achieved during ECG may be 10 times greater than for conventional grinding on hard materials (hardness ≥65 HRC). Abrasive...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003549
EISBN: 978-1-62708-180-1
...) austenitic stainless steel piping was installed as part of a collection system for a storm sewer treatment system used in a manufacturing facility. Within six months of start-up, leaks were discovered. On-Site Examination A series of tests were performed on site to eliminate stray currents...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003654
EISBN: 978-1-62708-182-5
... information that the pipe-to-soil potential technique provides, potential surveys over various parts of the pipeline may determine such effects as current distribution, induced currents, and stray-current pickup. This information can be used to design a suitable corrosion protection system to prevent further...