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Picture for Novel Membrane-Based Corrosion Sensors For Operating In Natural Gas Pipelines
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Novel Membrane-Based Corrosion Sensors For Operating In Natural Gas Pipelines

Product Number: 51321-16870-SG
Author: Timothy Duffy; Derek M. Hall ; and Serguei N. Lvov; Margaret Ziomek-Moroz
Publication Date: 2021
$20.00
Picture for Novel Multiport Flow-Column Corrosion Monitoring System (MFC) Revealed High Corrosion Rates by Corrosive Methanogenic Archaea
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Novel Multiport Flow-Column Corrosion Monitoring System (MFC) Revealed High Corrosion Rates by Corrosive Methanogenic Archaea

Product Number: 51321-16303-SG
Author: Biwen Annie An/Eric Deland/Andrea Koerdt
Publication Date: 2021
$20.00
Picture for NSRP Surface Preparation and Coating Panel Update Initiatives to Reduce the Costs of Painting Navy Ships
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NSRP Surface Preparation and Coating Panel Update Initiatives to Reduce the Costs of Painting Navy Ships

Product Number: 41212-669-SG
Author: Steve Cogswell
Publication Date: 2012
$20.00

An overview of the NSRP Surface Preparation and Coating Panel’s (SPC) mission to reduce the cost of building, repairing and maintaining US Navy ships. The work the NSRP program does as NAVSEA’s industry partner. It is whom we are, how we work and examples of our work that have been implemented on the deck plates. SPC is NAVSEA’s industry partner in preservation. 
Picture for Numerical Simulation of Under-film Corrosion of Coated Steel Panels with Multiple Coating Defects in Marine Environments
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Numerical Simulation of Under-film Corrosion of Coated Steel Panels with Multiple Coating Defects in Marine Environments

Product Number: 51319-12969-SG
Author: Naoki Osawa
Publication Date: 2019
$20.00

Corrosion in the water ballast tank (WBT) is caused by under-film corrosion originating from point or linear coating film defects. Osawa et al.(Proc. OMAE2016-54508) developed a two-dimensional cellular automaton (CellA) for under-film corrosion analysis and succeeded in consistent analysis of coating film deterioration and corrosion depletion. In CellA analyses the cellular automaton parameters governing coating performance and metallic corrosion are given by random number fields without spatial structure. This is over-simplified for large panel simulation and it is necessary to improve CellA in consideration of non-uniformity of the parameters. In this report corrosion tests of coated steel panels with multiple scribes are performed showing non-uniformity in coating blistering and corroded surface profile. Next a generation technique for non-normal random field with a spatial covariance structure is developed. This technique is adopted in the cell automaton parameter determination process. With this improved CellA program the under-film corrosion simulations of multiple-scribed coated panels are carried out. The calculated probability of occurrence of the cross-sectional asymmetry is compared with that measured. Based on this result the effectiveness of the developed analysis method is verified.
Picture for O2 Contamination in Ssc / Hic Qualification Test Environments – Impact on Test Results and Discussion on Acceptable Limits
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O2 Contamination in Ssc / Hic Qualification Test Environments – Impact on Test Results and Discussion on Acceptable Limits

Product Number: 51319-12894-SG
Author: Christophe Mendibide
Publication Date: 2019
$20.00

It is a well-admitted fact that oxygen contamination shall be avoided during standard H2S cracking tests. Until 2016 NACE technical methods related to H2S cracking resistance evaluation (e.g. NACE TM0284 and NACE TM0177) only gave general suggestions about O2 pollution. For instance it was recommended that ‘tests vessels shall be capable of being purged to remove O2’ and also that ‘O2 contamination is evident by a cloudy appearance’. In the 2016 revisions of NACE TM0177 and NACE TM0284 documents quantitative limits of O2 contamination were included:- Test method must ensure that the test solution contains less than 50 mass. ppb dissolved O2 before the introduction of H2S.- A more stringent limit of 10 ppb max. is imposed when testing Corrosion Resistant Alloys (CRA) or high strength low alloy steels (> 80 ksi).However the scientific basis of these values have not been well-established yet and there is still a lack of available experimental data to illustrate the potential impacts of small dissolved oxygen contents on the cracking resistance of different materials. In addition while the revised test methods explicitly address initial contamination of the test solution before H2S introduction they do not consider a continuous oxygen supply during testing. This possible continuous O2 contamination is extremely difficult to eliminate and control for example in case of poor laboratory practices oxygen ingress may arise by permeation through polymer tubings used for the tests or in case of a lack of tightness of gaskets.In order to better understand the impact of O2 contamination on H2S cracking a 3-years Joint Industrial Project (JIP) was launched at the end of 2015. The objectives were to evaluate if continuous O2 contamination can affect H2S cracking test results. A range of steel grades covering different types of O&G applications such as line pipe OCTG and flexible wires were used. Sulfide Stress Cracking (SSC uniaxial tensile as well as 4 point-bend tests) and Hydrogen Induced Cracking (HIC) tests were conducted with well-controlled and continuous O2 contamination. Three levels of O2 partial pressures in the gas feed corresponding to 300 ppb 50 ppb and less than 10 ppb dissolved O2 were used. These levels were selected to simulate poor deaeration and the current limits specified in the last standard revisions respectively.In parallel to the standard qualification tests hydrogen permeation and weight-loss corrosion experiments were performed with the same test matrix covering all regions of the SSC severity diagram. This paper aims at sharing the main results of this JIP. 
Picture for Observation of Flow Dependent Corrosion Rate by Ultrasound Corrosion Monitoring on a Gas Pipeline
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Observation of Flow Dependent Corrosion Rate by Ultrasound Corrosion Monitoring on a Gas Pipeline

Product Number: 51317--9336-SG
ISBN: 9336 2017 CP
Author: Hanne Martinusssen
Publication Date: 2017
$20.00

This trial demonstrated that ultrasonic monitoring can be applied to detect changes in real-life corrosion rates in a short time (3 weeks). This short feedback time can be used to give advanced warnings on corrosion issues on bends, T-pieces or other areas.

 
Picture for Offshore Atmospheric Coating Performance Evaluation Test Standards - NACE Vs. ISO
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Offshore Atmospheric Coating Performance Evaluation Test Standards - NACE Vs. ISO

Product Number: 51321-16902-SG
Author: Sai P. Venkateswaran; Andy Bodington; Tim Bieri; Benjamin T. A. Chang
Publication Date: 2021
$20.00
Picture for Oil Sands Haul Truck Frame Cracking Finite Element Analysis
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Oil Sands Haul Truck Frame Cracking Finite Element Analysis

Product Number: 51319-12704-SG
Author: Duane Serate
Publication Date: 2019
$20.00

The static FEA results identified opportunities to optimize existing maintenance, inspection, and operating practices. Recommendations are made regarding inspection, repair, and operation of haul trucks based on the ambient temperature, crack depth and length.
Picture for OLAC (On-Line Accelerated Cooling)-based X65 Linepipe with low surface hardness for Severe Sour Environment
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OLAC (On-Line Accelerated Cooling)-based X65 Linepipe with low surface hardness for Severe Sour Environment

Product Number: 51321-16387-SG
Author: Junji Shimamura/Itaru Samusawa/Joe Kondo/Daichi Izumi/Nobuyuki Ishikawa
Publication Date: 2021
$20.00
Picture for On The Adsorption Properties Of Non-Surfactant Corrosion Inhibitors: Pyridine, Quinoline And Acridine
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On The Adsorption Properties Of Non-Surfactant Corrosion Inhibitors: Pyridine, Quinoline And Acridine

Product Number: 51321-16686-SG
Author: Jose Vera; Ashwini Chandra; Kevin Ralston; William Durnie; Richard Woodllam
Publication Date: 2021
$20.00
Picture for On The Corrosion Of Commercial Coatings, Surface Treatments, And Carbides For Servicing Equipment Operating In Highly Soured Production Environments
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On The Corrosion Of Commercial Coatings, Surface Treatments, And Carbides For Servicing Equipment Operating In Highly Soured Production Environments

Product Number: 51321-16532-SG
Author: Manuel Marya
Publication Date: 2021
$20.00
Picture for On the Efficiency of Gypsum Scale Inhibition by Phosphonates: The Role of Molecular Architecture
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On the Efficiency of Gypsum Scale Inhibition by Phosphonates: The Role of Molecular Architecture

Product Number: 51319-12921-SG
Author: Petros Koutsoukos
Publication Date: 2019
$20.00

The precipitation of calcium sulphate dihydrate (CaSO4.2H2O gypsum) was studied at 25 ° C at constant calcium ion activity. The stability domain of the system and the kinetics of spontaneous precipitation of gypsum from unstable supersaturated solutions was investigated. The rates of precipitation showed parabolic dependence on the relative supersaturation in agreement with literature reports for lower supersaturations and seeded growth. Moreover the kinetics of precipitation of gypsum at sustained calcium ion activity at 25 ° C pH 6.5 were measured in the presence of two phosphonates: benzo (135-triyltrisphosphonic acid (BTP) and 135-triazine triphosphonate (TATPA) over a range of concentrations between 4-16 ppm. The presence of TATPA resulted in significant reduction of the rate of gypsum precipitation which reached total suppression of nucleation and growth at the highest test concentration. BTP showed also inhibition effect which was however lower. The differences in inhibition efficiency are attributed to molecular characteristics including flexibility and hydrogen bonding capacity.
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