AMPP Store - Conference Papers

Available for download

Study of Minimal Surface Preparation for Various Patch Repair Coating Products Applied under the Minimum Allowable Temperatures

Product Number: 51324-21005-SG

Author: Shan (Sherry) Rao; Da Kuang; Connor McManus

Publication Date: 2024

$40.00

Patch repair coating products provide cost-effective solutions for restoring small to medium-sized damages in mainline coatings to extend the lifespan of pipelines. Some coating products are specially designed to tolerate reduced surface conditions while providing the adequate corrosion protection performance. Due to easy mobilization and relatively inexpensive, power tool cleaning is commonly used in the field to prepare surfaces for small area repairs. During field coating work, adverse weather conditions are often encountered. However, little data were publicly available to support if the minimal surface recommended by the product data sheet (PDS) is also suitable for the coating applied under the minimum allowable temperature. In addition, the effect of the similar surface level produced by different power tools on the corrosion resistance of the same coating is rarely reported. This paper aims to address these gaps. Four commercially available coating products were selected to examine their potentials as patch repairs, including one liquid-applied epoxy coating, one butyl-based sealant product, and two viscoelastic coating products. Test samples were prepared using a rust grade C steel pipe section. Different power tools such as wire brush, rotary sander, flap disc, and bristle blaster were used to create SSPC-SP3, SSPC-SP11, and SSPC-SP15 surfaces. All four products were applied and cured at the minimum allowable temperatures specified in their respective PDS or recommended by the manufacturers. A 14-day cathodic disbondment (CD) test was employed to rule out the improper surfaces or power tools, and the next higher surface level was then considered as potentially suitable. The long-term performance characteristics of these coating products on the established minimal surfaces under the minimum allowable application temperatures were evaluated using the selected critical tests from CSA Z245.30 standards.

Available for download

Study of Phase Distribution on Alloy UNS N07718 in Different Hardening Conditions and Its Relationship With Hydrogen Embrittlement Susceptibility

Product Number: 51319-13025-SG

Author: Julia Botinha

Publication Date: 2019

$20.00

The precipitation-hardenable Nickel Alloy UNS(1) N07718 is one of the most commonly applied alloy in the oil and gas industry. Enriched with amounts of niobium molybdenum titanium and aluminum this alloy is known as having good corrosion resistance in sour gas applications while presenting excellent strength properties.The austenitic matrix of g phase is strengthened by the intermetallic precipitates g‘ (ordered FCC Ni3Al phase) and g‘‘ (body-centered tetragonal Ni3Nb phase). Co-precipitates can also be observed.Studies have been carried out in order to compare and better understand the hydrogen embrittlement resistance of three different aging conditions of N07718. Different VIM/VAR commercial heats were age hardened under the standard ageing temperature range to produce a minimum 120 ksi yield strength material under a lower temperature that is responsible for optimizing the mechanical properties (to produce a minimum 140 ksi yield strength material) or under a two-step heat treatment that gives to the material improved mechanical properties (minimum 150 ksi yield strength) when compared to the single-step heat treatment.The interaction of hydrogen with the microstructure has been evaluated by means of hydrogen embrittlement susceptibility tests and structural characterization by neutron diffraction and small angle neutron scattering techniques.

Available for download

Study of Scribe Type on Accelerated Underfilm Corrosion Creep

Product Number: 41211-642-SG

Author: Carl W. Reed

Publication Date: 2011

$20.00

The creepage of corrosion underneath a coatings film applied to a steel test panel is often used as a performance test for the anti-corrosion properties of a coating system. Creepage is defined as the degree of corrosion (usually measured in mm) emanating away from a scribe line underneath a coating film applied to a steel substrate. There are several factors which may affect the degree of corrosion creep, one of which is the type and width of scribe cut into the coatings film to the steel substrate. There is a variety of scribing methods used in various test methods and specifications; however it is unclear if there is actually a performance difference observed in corrosion creep when using different scribe types.

Available for download

STUDY OF THE INHIBITIVE EFFECT OF NOVEL SCHIFF BASE ON CORROSION OF HCl ON MILD STEEL

Product Number: 51312-01478-SG

ISBN: 01478 2012 CP

Author: Smita M. Jauhari

Publication Date: 2012

$20.00

Available for download

Study of Vapor Corrosion Inhibitors Built in to Corrosion Control Covers: Do VCIs Last the Life of the Covers?

Product Number: 51321-16175-SG

Author: Seckin Ozol / Na Qi

Publication Date: 2021

$20.00

Available for download

Study on Effect of Buffer Capacity on Corrosion Performance of CRAs in Simulated Well Condition

Product Number: 51317--9283-SG

ISBN: 9283 2017 CP

Author: Masayuki Sagara

Publication Date: 2017

$20.00

Methodology to simulate actual oil and gas field condition in laboratory tests. A sulfide stress cracking test is carried out on 13% Cr stainless steel with various buffer solutions. Then, pH behavior was estimated. A suitable composition of the solution is proposed by using thermodynamic calculations.

Available for download

Study on Effect of Phosphate Species on Green Rust Transformation in Steel in Marine Environment

Product Number: 51300-11403-SG

Author: Gadadhar Sahoo, Shun Fujieda, Kozo Shinoda and Shigeru Suzuki

Publication Date: 2011

$20.00

Available for download

Study On Elemental Sulfur Formation From Black Powder Deposits

Product Number: 51322-17678-SG

Author: Yousef Khuraibut

Publication Date: 2022

$20.00

Black Powder is a phenomenon that all oil and gas companies are facing and presenting a variety of problems in associated processing equipment and pipelines, such as flow inefficiency, product contamination, wear, plugging and under deposit corrosion, among others. Another major concern is the possible formation of elemental Sulfur (S8), which could be produced as a by-product of oxidation of iron sulfides. It also can be produced from H₂S dissociation at elevated temperatures or by microbiological reactions, involving the reduction of sulfate.

Available for download

Study on Glycol Reboiler and Surge Vessel Corrosion in Glycol Regeneration Unit

Product Number: 51319-13289-SG

Author: Ali Akrouf

Publication Date: 2019

$20.00

Glycol systems are widely used in gas processing plants for the removal of contaminants such as moisture from the gas. Since the majority of the piping and vessels in these plants are fabricated from carbon steel there is a high potential for corrosion. This paper provides a brief overview of some of the major corrosion mechanisms associated with Glycol regeneration unit. In addition a case study from a Try-Ethylene Glycol (TEG) regeneration system is also discussed where localized corrosion was noticed in the Glycol reboiler and surge vessel. Booster Station facility receives gas from Gathering Center for further compression and removes moisture before being exported to the refinery. This is achieved by compression of gas in multiple stages with locally provided compression equipment and processed in glycol dehydration units to remove the moisture. Water vapor removal from the gas stream is achieved by contacting the wet gas counter-currently with lean (dry) TEG in the glycol contactor column. The rich glycol having water content is routed through a pre-heating coil flash tank filters and finally comes in the Glycol reboiler. Due to the high temperature in reboiler the glycol loses its ability to hold water. Separated water is vaporized and leaves through top of the still column. The regenerated glycol flows to the surge tank and from there it is pumped to Glycol absorber. During one of the Plant Maintenance shutdowns Glycol reboiler and surge vessel were opened for internal inspection and appreciable corrosion was noticed in the top sections of the vessels. A study was initiated to find out the probable causes of the deterioration. Corrosion products were collected for XRD analyses. Also chemical analysis of lean & rich Glycol samples taken from various streams was carried out. A corrosion pattern was established along the glycol regeneration circuit which revealed mainly the low pH of Rich Glycol due to possible decomposition reaction of glycol into organic acid. Presence of Iron sulfate and various forms of iron sulfide including Pyrite Greigite and Pyrhotite (also referred to as Black Powder Derivatives) all known to expedite localized corrosion and deterioration of the metals. This paper presents the findings based on the analysis of the corrosion products and glycol samples and discusses the possible corrosion mechanisms. Recommendations are also provided to ensure the integrity and reliability of these vessels for sustainable operation. This case history demonstrates the diverse nature of the causes of Glycol related corrosion in plants and the differing approaches that have to be taken to mitigate corrosion in Glycol regeneration equipment.

Available for download

Study On Hold Time Effects On Standard Fatigue Specimens And Component Relevant Loading Conditions At Welds Using Bending Specimens From Welded Pipes

Product Number: ED22-18531-SG

Author: Michael Grimm, Matthias Herbst, Armin Roth, Jürgen Rudolph

Publication Date: 2022

$20.00

This paper summarizes the results of a research project on environmental effects on the environmentally assisted fatigue lifetime of laboratory specimens made of austenitic stainless steel type 316L and corresponding welds. In particular, investigations on the effect of hold-times, applied during testing in high-temperature water and tests on the fatigue welds were performed.

Available for download

Study on Probabilistic Service Life of Reinforced Concrete Bridges Structures in Florida Exposed to Chlorides

Product Number: 51319-13117-SG

Author: Sylvia Kessler

Publication Date: 2019

$20.00

The durability design of new structures at Florida DOT is currently performed by environmental classification of structures. Bridge substructure and superstructure environments can be assigned to slightly aggressive moderately aggressive or extremely aggressive according to the FDOT Structures Design Guidelines. Each classification requires prerequisites regarding concrete composition and concrete cover. The disadvantage of this durability design approach is that the achievable service life remains unknown. However full-probabilistic service life models for predicting the service life in case chloride-induced reinforcement corrosion are available. The objective of the paper is a selected benchmark of the durability design of reinforced concrete bridges in Florida by means of probabilistic modeling.

Available for download

Study on the Effect of Polymer Architecture in Inhibiting Calcium Oxalate Precipitation

Product Number: 51319-13014-SG

Author: Amannie Kweik

Publication Date: 2019

$20.00

The influence of polymers with different architecture on spontaneous batch precipitation of calcium oxalate was investigated by conductivity method. It has been found that inhibition of calcium oxalate strongly depends on polymer dosage molecular weight ionic nature of functional group amount and size of comonomers etc. In general calcium oxalate increases with increasing polymer dosage. The molecular weight (MW) was an important factor parameter in determining the activity of tested polymers. Low MW polymers proved to be more efficient in determining the activity of tested polymers. Acrylic acid maleic acid itaconic acid copolymers in which functional groups were introduced (pyrrole sulfono amido alcohol) were efficient precipitation inhibitors but the efficiency depended on co-polymer architecture. In general homopolymers containing carboxylic acid group perform better than co- and terpolymers. It has also been found that presence of polymers strongly affect morphology of calcium oxalate crystals as studied by scanning electron microscopy and X-ray diffraction technique.

Conference Papers

NACE Conference Papers

SSPC Conference Papers

AMPP Conference Papers

Online Conference Paper

Individual Conference Papers

Study of Minimal Surface Preparation for Various Patch Repair Coating Products Applied under the Minimum Allowable Temperatures

Study of Phase Distribution on Alloy UNS N07718 in Different Hardening Conditions and Its Relationship With Hydrogen Embrittlement Susceptibility

Study of Scribe Type on Accelerated Underfilm Corrosion Creep

STUDY OF THE INHIBITIVE EFFECT OF NOVEL SCHIFF BASE ON CORROSION OF HCl ON MILD STEEL

Study of Vapor Corrosion Inhibitors Built in to Corrosion Control Covers: Do VCIs Last the Life of the Covers?

Study on Effect of Buffer Capacity on Corrosion Performance of CRAs in Simulated Well Condition

Study on Effect of Phosphate Species on Green Rust Transformation in Steel in Marine Environment

Study On Elemental Sulfur Formation From Black Powder Deposits

Study on Glycol Reboiler and Surge Vessel Corrosion in Glycol Regeneration Unit

Study On Hold Time Effects On Standard Fatigue Specimens And Component Relevant Loading Conditions At Welds Using Bending Specimens From Welded Pipes

Study on Probabilistic Service Life of Reinforced Concrete Bridges Structures in Florida Exposed to Chlorides

Study on the Effect of Polymer Architecture in Inhibiting Calcium Oxalate Precipitation

Association for Materials Protection and Performance