AMPP Store - NACE Conference Papers

Available for download

Optimization of Accelerated Life Testing of Anodes

Product Number: MPWT19-15290

Author: Mansour Alhammad, Abdullatif Alabdulhadi, Balasubramani Bakthavatchalu, Nayef Alanazi, Haitham Aljuhani, Abdulrahman Alhuwaiji

Publication Date: 2019

$0.00

The performance of titanium mixed metal oxide (MMO-Ti) anodes — provided by five global vendors — targeted for coke breeze backfilled soil impressed current cathodic protection (ICCP) applications, was investigated in this study. The time to failure of the MMO anodes was measured in accordance with NACE TM0-108. Accelerated lifetime testing was performed on MMO anodes to measure sample durability and to adequately meet the current density design requirement (0.06A/cm2). The anodes were immersed in 1M sulfuric acid under varying current densities (1A/cm2, 1.4A/cm2 and 2A/cm2) under controlled temperature, until the samples lost their electro-catalytic properties. The results measured at 1A/cm2 illustrated that time to failure of the tested anodes ranged from 10 days to more than 90 days. While conducting the same test at 1.4A/cm2, time to failure of MMO anodes was reduced to a range of 13 days to a little over 30 days yielding results of anode ranking consistent with those measured at 1A/cm2. Therefore, for the sake of time, the optimum applied accelerated current density was recommended to be 1.4 A/cm2 for Ru/Ta MMO anodes, to push them to their limits at a faster rate in a shorter time.

Available for download

Optimization of Corrosion Inhibitor Application Using Modular Automated Corrosion Control Centers

Product Number: 41206-278-SG

Author: Wayne Powell

Publication Date: 2006

$20.00

In the 1990s, military assets transported shipboard to overseas locations by the U.S. Army arrived at their destinations already corroded due to saltwater. In response to this problem, U.S. Army Tank-automotive and Armaments Command (TACOM) began manually applying spray-on corrosion inhibitor (CI) to assets prior to transportation and realized a significant reduction in corrosion. However, due to an increase in the volume of military assets being transported overseas, manual application of CI soon proved too time-consuming and costly.

Available for download

Optimization of FGD Operating Conditions by Electrochemical Laboratory Testing Applied to Alloy UNS S32205

Product Number: 51320-15069-SG

Author: Daniel Betancourt, Steven Kung, Craig Birkenfeld, Jie Wen

Publication Date: 2020

$20.00

Flue gas desulfurization (FGD) systems are frequently used at power plants to remove SO2 from coal combustion. In systems where limestone is utilized, calcium sulfate from the resulting slurry can be concentrated into a valuable byproduct. However, the concentrated slurry containing chloride poses increased localized corrosion risk to the materials of construction in contact with exhaust/combustion stream. Cyclic Potentiodynamic Polarization (CPP) and Critical Crevice Temperature (CCT) present electrochemical methodologies which can be used to assess the relative risk of different conditions in the laboratory. However, the results of these techniques can be dependent on the details of the experimental protocol. In this study, the effect of slurry preparation, potential scan rate, alloy conditioning time, and slurry acidity were examined. A conservative test protocol was developed based on the outcomes of the effects considered, and the critical chloride concentration of Alloy UNS S32205 was determined, enabling optimization of FGD operating conditions.

Available for download

Optimization of Internal Corrosion Assessments in Crude Oil Pipelines with Internal Corrosion Predictive Model

Product Number: 51321-16180-SG

Author: C. Onuoha/ E. Pozniak/ S. McDonnell/ V. Shankar/ L. de Guzman/H. Li.

Publication Date: 2021

$20.00

Available for download

Optimization of Side-Groove Configuration On DCB Test

Product Number: 51317--9102-SG

ISBN: 9102 2017 CP

Author: Jun Nakamura

Publication Date: 2017

$20.00

The Double Cantilever Beam test method in ANSI NACE TM0177 is increasingly applied as a QA test. In this analysis, influence of various side-groove root configurations (considered to change the stress concentration) on KISSC and Finite Element Analysis results were focused upon.

Available for download

Optimization of the Coating Anomaly Detection and Prioritization Methodology Using Voltage Gradient Surveys

Product Number: 51300-11132-SG

ISBN: 2011 11132 CP

Author: Chijioke Ukiwe and Shamus McDonnell

Publication Date: 2011

$20.00

Available for download

Optimization of the DL-EPR Method for Detecting Sensitization in Alloy 690

Product Number: 51317--9037-SG

ISBN: 9037 2017 CP

Author: Mariano Kappes

Publication Date: 2017

$20.00

UNS N06690 is one of the current choices for nuclear power plant steam generator tubing. The objective of this work was the optimization of the double loop electrochemical potentiokinetic reactivation (DL-EPR) method for that alloy. Specimens were tested under different heat treatments.

Available for download

Optimized Pulsed Anodization for Corrosion Protection of Aluminum Silicon Alloys

Product Number: 51321-16431-SG

Author: Marco Bandiera/Arianna Pavesi/Massimiliano Bestetti/Alessandro Mancini/Andrea Bonfanti/Federico Bertasi

Publication Date: 2021

$20.00

Available for download

Optimizing Corrosion Inhibitor Chemical Injection Performance

Product Number: MPWT19-15489

Author: Narayanan Suresh

Publication Date: 2019

$0.00

Yokogawa has long time been focusing on optimization of chemical injection process which is vital in almost all process industries. Research has been made to identify the existing problems in chemical injection applications, based on which a unique product solution named FluidCom was developed.
This paper addresses the challenges faced in Upstream and Downstream industries in terms of corrosion and how this corrosion threat is mitigated using Chemical injection systems and suggest the best practices and solution to optimize chemical injection system, while significantly reducing the CAPEX and OPEX. Also a reliable closed loop flow control can be achieved for chemical injection dosing application and as a result tighter and efficient control of corrosion.

Available for download

Optimizing Equipment Availability through Structured Engineering Assessment

Product Number: MPWT19-14367

Author: Paresh Haribhakti, Ketan Upadhyaya

$0.00

The recognized international codes, such as ASME [1], API[2], BS[3] provide design and fabrication guidelines for various equipment used in industries viz. pressure vessels, piping and storage tanks. However, the fabrication standards do not address acceptability of the equipment on detection of any deterioration; once put in to the operation.
The engineering assessment becomes essential when flaws such as “leakage”, ‘metal loss’ or ‘linear indications’ are detected during routine inspections. Sometimes, observed damages or flaws, do not meet the definition criteria as per assessment steps given in the international standards of fitness for service. In order to asses such damages, a structured engineering approach based on experience and judgment would help in such situations.
Describing the structured engineering assessment approach, this paper discusses a case study on typical ‘hydrogenation reactor’ that displayed micro-level leakage. Until 2015, the reactor often leaked during service prior to the assessment. This approach using various NDT methods, microstructural examination and structured engineering analysis identified the problem of dilution of base metal with welding that was leading to inter dendritic corrosion at micro level. The structured engineering analysis paved the forward path by which the reactor could be operated without any unscheduled outages since then after providing improved welding procedure.

Available for download

Optimizing Sour Qualification Testing – Verification of H2S Solubility From H2S/N2 Gas Mixtures up to 20,000 psig at 70 °F

Product Number: 51321-16317-SG

Author: Brent W.A. Sherar/Peter F. Ellis II

Publication Date: 2021

$20.00

Available for download

Optimizing Wallpaper Cladding Repair of WFGD Air Pollution Control Systems in the Power Industry

Product Number: 51317--9365-SG

ISBN: 9365 2017 CP

Author: Tracey Holmes

Publication Date: 2017

$20.00

By selection of proper base metal/weld metal combinations and diligent use of established cladding procedures a very serviceable and reliable “wallpaper” metallic lining requiring only periodic cleaning, can be achieved at an economical price.

NACE Conference Papers

Association for Materials Protection and Performance