Search
Filters
Close

Search and Filter

Toggle Open/Closed
View as
Display per page
14121 total products found.
Picture for Extended Connectivity of Zinc Pigments to Provide Enhanced Galvanic Coupling by Partial Replacement with Nanoparticles
Available for download

Extended Connectivity of Zinc Pigments to Provide Enhanced Galvanic Coupling by Partial Replacement with Nanoparticles

Product Number: 51319-13470-SG
Author: Saiada Fuadi Fancy
Publication Date: 2019
$20.00

Coatings are widely used to mitigate corrosion of highway steel bridges in aggressive exposure environments. Zinc-rich-primer three-coat (ZRP) systems have been used since the 1980’s. However coating failure of ZRP has been identified within 15 years of application well short of typical 75 year bridge design service life. Most of the reported coating failure included corrosion undercutting blistering and delamination. Partial replacement of zinc pigments with nanoparticles in ZRP coating systems have been shown to provide beneficial physical chemical and mechanical properties. These enhanced qualities may provide enhanced performance to mitigate premature coating failure. Earlier research showed that the nanoparticle enriched primer provided comparable corrosion resistance in aggressive environments as conventional three-coat systems. Nonetheless coating performance can be compromised by inappropriate surface preparation before coating application. Exposure to high humidity and surface contaminants (hygroscopic salt) as well as noncompliance to proper anchor profile requirements can initiate coating failure. The purpose of this study was to evaluate the effect of surface preparation with varying surface contaminants on the corrosion performance of a nanoparticle enriched zinc rich epoxy coating (NPE-ZRP) system. Adverse environmental condition exposure to different level of humidity (5% 75% and 100% RH) water immersion and salt contamination were incorporated before the coating application. After adverse exposure NPE-ZRP coating and a traditional ZRP coating (as a reference) were applied over the coupons. Cyclic testing in alternate wet/dry exposure was done for ~5 months. Coating and corrosion behavior was analyzed during the wet exposure of the cyclic testing by Open Circuit Potential (OPC) Linear Polarization Resistance (LPR) and electrochemical impedance spectroscopy (EIS). Physical parameters such as changes in coating thickness pull-off strength and cross-sectional micro-graphic analysis were also assessed to elucidate the extent of coating degradation.

Picture for 04127 Simulation Tests on Effects of Mechanical
Available for download

04127 Simulation Tests on Effects of Mechanical Damage or Acid Cleaning on Corrosion Resistant Alloys Used for Oil/Gas Production Well Tubulars

Product Number: 51300-04127-SG
ISBN: 04127 2004 CP
Author: John W. Martin, BP Amoco; Andrew J. McMahon, Helix RDS
$20.00
Picture for Several Case Studies of Causes and Effects of Cuprosolvency
Available for download

Several Case Studies of Causes and Effects of Cuprosolvency

Product Number: 51319-12992-SG
Author: James Datesh
Publication Date: 2019
$20.00
Picture for 04263 Exposure Tests and Surface Analysis to
Available for download

04263 Exposure Tests and Surface Analysis to Evaluate the Level of Corrosion Control and Potential Benefit of Salt Water Rinse Additives

Product Number: 51300-04263-SG
ISBN: 04263 2004 CP
Author: Patricia Trzaskoma-Paulette, National Academy of Sciences; S.G. Lambrakos, Nick Tran, Kershed Cooper
$20.00
Picture for Experimental Study and Finite Element Modelling of the Cathodic Protection Influence on Parallel Pipelines During Maintenance Operations
Available for download

Experimental Study and Finite Element Modelling of the Cathodic Protection Influence on Parallel Pipelines During Maintenance Operations

Product Number: 51324-20713-SG
Author: Erwan Diler; Yves Zannier; Alexandre Billot; Flavien Vucko; Tiphaine Lutzler
Publication Date: 2024
$40.00
Dense buried pipelines network, such as in implemented in parallel, can be installed in different process and storage mills, such as geological gas and hydrocarbon storages. Their corrosion resistance is ensured by a combination of organic coating and cathodic protection (CP). For maintenance operation on a specific pipeline, the CP can be turned off for safety reasons. Thus, the operated pipeline can be affected by CP influence from other surrounding protected ones. This phenomenon is supported in the field by different pigging inspections, highlighting local corrosion induced by output stray current on coating defects. In the literature, many studies focused on CP influences by finite and/or boundary element modeling. However, usually the foreign structures considered (under influence) are limited to bare steel or fully coated pipeline. Moreover, most of these studies are not confronted with experimental works. To our knowledge, the actual influence between the different pipelines is not much documented in the literature and not quantified. In this study, an experiment consisting in 3.00 x 1.80 x 0.80 m sand tank, equipped with 4 full scale parallel pipelines, with 17 model defects were realized. The model defects reproduce uniformly degraded coating and local defects. The experimental work allows i) measuring the DC influence under different CP configurations, and ii) providing stray current data for finite element modelling (FEM). The FEM was performed in a two steps i) a CP distribution in terms of current demand and electric field on protected pipelines, and ii) application of this electric field to the foreign pipeline. The good agreement obtained allows a validation the proposed approach and globally assess the riskier scenario in terms of nature of the defect, applied CP and soil environment.
Picture for Surface/Environment Interactions of CoCrMo
Available for download

Surface/Environment Interactions of CoCrMo

Product Number: 51319-13232-SG
Author: Blake Thornley
Publication Date: 2019
$20.00
Picture for Conference Proceedings 2018- 11183 through 11390
Available for download

Conference Proceedings 2018- 11183 through 11390

Product Number: 51318-4
Author: Various
Publication Date: 2015
$0.00
Picture for Critical Review of International Standards on Soluble Salts Measurement Methods
Available for download

Critical Review of International Standards on Soluble Salts Measurement Methods

Product Number: 51324-20851-SG
Author: Sophia Xiaoxia Zhu; Benjamin T. A. Chang
Publication Date: 2024
$40.00
It is well known that the residual salts on steel substrates have detrimental effects on the coating performance. There are several international standards on the measurement of residual salts. The most widely recognized ones are ISO 8502-6 and 8502-9. ISO 8502-6 specifies the soluble salts extraction procedures and ISO 8502-9 specifies the calculation of the soluble NaCl salt. The standards use 3 ml deionized (DI) water in 10 minutes dwell time to extract the soluble salts to measure with a potable conductivity meter. The measured conductivity reading in µS/cm is multiplied by 1.2 to convert into total (NaCl) salts in mg/m2. The ISO standards assume the extracted salt solution containing only Na+ and Cl- ions and use a simple analytical calculation to convert the conductivity to the total NaCl salt concentration on the contaminated steel surface. In fact, in addition to Na+ and Cl- ions, Fe+2, OH- ions are also in the extracted salt solution contributing to the conductivity reading, but not considered in the total salt calculation. The ISO standards on the total (NaCl) salt measurement are oversimplified that leads to inaccurate estimation of the residual salts. The chloride ions in aqueous condition can cause micro-pits on the carbon steel surface. The pit density and depth are related to the salt levels and corrosion reaction time. During the salt measurement, the DI water can not readily migrate to the micro-pits to extract salts, and the salt extraction efficiency depends on the corrosion severity. In this work we have investigated the salt extraction on doped salted steel panels with five known amounts of NaCl salt. We also used a chloride electrode to measure the chloride ion concentration. The test results showed that the salt extraction efficiency depends on the severity of the pitting corrosion. Based on the chloride level, the extraction efficiency is 90% at low salt content and 50-66% at higher salt content on the grit blasted panels using Bresle patch method. It is recommended to use the residual chloride concentration in the coating specifications as the acceptance criterion, not the total NaCl salt level. More research is to be done to investigate the residual chloride measurements to give the international coating community a more reliable test method in the field.
Picture for Alloy 29 and Alloy 825 for Chemical Injection Lines
Available for download

Alloy 29 and Alloy 825 for Chemical Injection Lines

Product Number: 51319-13162-SG
Author: Wenle He
Publication Date: 2019
$20.00

Cold worked Alloy 28 (UNS N08028) and Alloy 29 (UNS N08029) have been successfully used as Oil Country Tubular Goods (OCTG) in H2S-containing downhole applications. Laboratory testing showed high stress corrosion cracking (SCC) resistance of these alloys in sour conditions outside of ISO limits for 4c type materials where Alloy 828 Alloy 28 and Alloy 29 belong to. Recently a similar study found in literature showed comparable results between cold worked Alloy 28 and Alloy 825 (UNS N08825). Alloy 28 Alloy 29 and Alloy 825 in annealed conditions belong to 4a type materials which have higher SCC resistance compared to the cold worked materials. Compared to Alloy 825 Alloy 29 is arelatively new material which has been introduced in control line and chemical injection line applications. However corrosion testing data is not always available for these materials in annealed conditions. ISO 15156-3 has no environmental limits for the 4a type materials. This work aimed at to provide pitting corrosion resistance data on the full-size tube materials for control line and chemical injection line in annealed conditions.Pitting corrosion resistance of Alloy 29 and Alloy 825 has been determined by critical pitting temperature (CPT) per ASTM G150 on full-size seamless tubes in annealed condition for control line and chemical injection applications. The effect of pitting resistance equivalent (PRE) has been studied by using Alloy 825 Alloy 316L (UNS S31603) in control line dimensions. Alloy 28 and Alloy 29 in cold worked condition for OCTG application were also included.The CPT was 70°C for Alloy 29 and 30 ~ 45°C for Alloy 825 which was mainly dependent on pitting resistant equivalent (PRE) of the materials. Alloy 29 and Alloy 825 belong to same category 4a and 4c type nickel-based alloys defined by ISO15156-3 for down-hole applications. Because Alloy 29 has higher PRE and lower Ni content compared to Alloy 825 Alloy 29 can be considered as a cost-saving material for control line and chemical injection line applications.

Picture for Over-the-line Potential Surveys for Indirect Condition Assessment of Water/Waste Water Pipelines: Case Studies
Available for download

Over-the-line Potential Surveys for Indirect Condition Assessment of Water/Waste Water Pipelines: Case Studies

Product Number: 51319-13003-SG
Author: Mersedeh Akhoondan
Publication Date: 2019
$20.00

Failure of water/wastewater mains can result in high visibility repairs customer inconvenience and replacement costs. Preventive measures such as condition assessment for early recognition of corrosion in aging infrastructures is crucial for agencies from resiliency safety and economic standpoints but is not regulated as in the oil & gas industry. Internally deployed tools/technology or external excavations for direct assessment techniques provide valuable insight on the existing condition of buried structures but at a significant cost in terms of shutdown and technology expenses in addition to safety concerns for manned entries into confined spaces. Because of the cost and safety implications large diameter cement mortar lined (CML) pipe extensive and recurring direct assessments are less common in the water and wastewater industries. Indirect assessment techniques particularly the over-the-line potential surveys for condition assessment of water/wastewater lines can be conducted to determine active external corrosion areas. Traditionally over-the-line potential surveys were applied to electrically continuous pipelines. Most water/wastewater pipeline designs utilize rubber gasket bell-and-spigot joints. Unless electrical continuity is intentionally designed for the pipeline such joints result in a pipeline with no electrical continuity. This paper presents multiple case studies where over-the-line potential surveys were successfully applied on electrically discontinuous water pipelines. The results of over-the-line surveys correlated well with direct assessment techniques. The paper presents the methodology and results of such assessments and findings for various pipe materials.

Picture for SRU Reaction Furnace Waste Heat Boiler Tube Failure Causing Unscheduled Shutdown
Available for download

SRU Reaction Furnace Waste Heat Boiler Tube Failure Causing Unscheduled Shutdown

Product Number: MPWT19-14391
Author: Qasem J. Al-Hassan, Iyad A. Al-Buraiki
Publication Date: 2019
$0.00
Picture for Conference Proceedings 2018- 11009 through 11182
Available for download

Conference Proceedings 2018- 11009 through 11182

Product Number: 51318-3
Author: Various
Publication Date: 2018
$0.00
Picture for Biofuel Tank Lining- From Lab to the Field Journey
Available for download

Biofuel Tank Lining- From Lab to the Field Journey

Product Number: 51324-20722-SG
Author: Steve Liebhart; Ravi Nagarajan; Pedro Escudero
Publication Date: 2024
$40.00
The unprecedented growth in the use of bio-based feedstocks in the Oil and Gas industry has led to several research efforts on the part of coating manufacturers to determine best options for the lining of feedstock storage tanks. While a few technologies have emerged as good, better, and best candidates to withstand the chemical exposure and storage temperature of the feedstocks, their application requirements for application conditions vary widely. Given the geographical locations of the facilities that are involved in the production of biofuels, the site environmental conditions make some of the lining options less practical than others for the application of the selected technologies. This paper will screen coatings with different physical properties to support the initial selection process. The results of the tested technologies discuss the preselection of linings for various feedstocks for short term storage. The R & D has been scaled up at different part of the world to mitigate corrosion in Biofuels markets. Due to significant growth in bio fuels the raw feed stock supply options keep growing from standard vegetable seed oils and animal fat to remaining agricultural waste, other animal wastes, municipal wastes etc. This increases the unknown variables in the process causing corrosion and solutions to mitigate. These waste to fuel category is attracting diversified feed stocks in offering from the new market. The findings to adopt the fit for purpose approach is aimed in tooling owners and operators in the journey.
Picture for Failure of Cast Duplex Stainless Steel Valves Due to Improper Microstructure
Available for download

Failure of Cast Duplex Stainless Steel Valves Due to Improper Microstructure

Product Number: 51324-20759-SG
Author: K. Ravindranath; B. Al-Wakaa; A. Ali; Ahmad Al-Swaha; Salem Al-Qahtani
Publication Date: 2024
$40.00