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The aim of this paper is to find a correlation between nitride content/distribution and properties of two of the largely adopted Duplex Stainless Steel (DSS), UNS* S32205 and UNS S32750. *Unified Numbering System
This is a print-on-demand (POD) book that will be produced just for you in 2-5 days after your order. It should arrive at your door in about one to two weeks. However, due to supply chain and logistic challenges currently affecting the industry, it may take longer. Allow three weeks for international orders.
MUST HAVE CLASSIC: The objective of the NACE Corrosion Engineer's Reference Book, published in 2016, is to provide scientists, engineers, technologists, and students with useful and important information and data on corrosion investigation and control.
This handbook starts out with a comprehensive glossary that includes standard terminology and acronyms related to corrosion. It also contains more than 325 tables, graphs, and charts.
2016 NACE, 570 pages, 5 x 8" trim size, perfect bound
Corrosion in metallic industrial equipment, pipework, and vessels, when left unchecked, can lead to the full deterioration of wall-thickness. The presence of through-wall defects may lead to loss of production and costly shutdowns, in addition to environmental and safety hazards. One solution to this issue is the installation of a repair system using composite materials, which are durable for decades, easy to install, and a cost-effective to deploy option for bringing industrial equipment back to operation, even after a leak is detected. Internationally recognized organizations, such as ASME and ISO, set the rules for the design methodology, material testing, and training of personnel for this type of repair method.
The installation of metallic coupons in the vicinity of buried pipes under cathodic protection (CP) allows theoretically to measure the potential and the current density through the simulated coating defect. Nevertheless this type of monitored coupon does not provide direct information on the actual efficiency of the CP and corrosion rates that could be caused by a CP failure over time or not adapted CP design. According to the soil resistivity and the corrosion potential in absence of CP a protection potential is generally targeted following the standard recommendations. However the soil resistivity as well as the corrosion potential might depend on the seasonal fluctuations and the protection potential might vary as function of the considered standard. Moreover all soils parameters cannot be considered in recommendations from standards and cathodic protection criteria can be sometimes debatable.In this study very sensitive electrical resistance (ER) sensors allowing obtaining precise corrosion data in real-time were adapted for soil applications. They were used in the selected soils and conditions to determine the off potential and current density corresponding to a corrosion rate of 10 µm/year which corresponds to the maximal corrosion rate of buried structures considered as protected according the standard ISO 15589-1:2015. The adapted ER sensors appeared to be particularly suitable for determining the protection potential and CP criteria in a relatively short time. For the tested soils and conditions the results showed that the cathodic protection criteria recommended in ISO 15589-1: 2015 are conservative compared to those measured experimentally. This method therefore seems particularly relevant for the determination of the protection potential in complex or polluted media in the absence of data in the literature.
This paper describes experimental work investigating the influence of steel surface roughness on the adhesion performance of fusion bonded epoxy (FBE) pipeline coatings. The paper begins with a summary of the standards and methods that can be used to measure surface roughness. Several parameters are used to characterize the roughness of a blast cleaned steel including profile peak height and peak count. Tortuosity and rugosity indicate the proportional increase in steel surface area developed by roughening the surface. Normal pipeline coating industry practice is to specify and control a single roughness parameter termed “surface profile”. It is measured with replica tape and corresponds to the maximum peak-to-valley height.In the experimental work steel panels were abrasive blast cleaned with various steel shot and grit abrasives and the roughness characteristics of the blast cleaned surface were measured with stylus profilometers conventional replica tape and 3D imaging of replica tape.A FBE pipeline coating was applied to the prepared steel panels. The adhesion performance of the FBE coating was evaluated using the following test methods.<ul><li>Hot water immersion adhesion rating per CSA Z245.20 section 12.14 </li><li>Pull-off adhesion strength after hot water soak exposure per ASTM 4541 </li><li>Cathodic disbondment radius at 65 and 80 °C per CSA Z245.20 section 12.8 </li><li>Time before blisters were observed in Atlas Cell per NACE TM0174 modified </li><li>Average blister diameter in Atlas Cell </li><li>Pull-off adhesion strength after Atlas Cell exposure per ASTM 4541 </li></ul>The experimental data were analyzed using statistical techniques to investigate the relationship between the measured surface roughness and the adhesion test results. The adhesion results were found to be positively and linearly correlated with substrate tortuosity and rugosity. Profile peak height and peak count were found to contribute to tortuosity.
A series of experiments was conducted to examine the repeatability of corrosion rates of various coupons, cleaning procedures prior to exposure inside a test chamber, and removal of corrosion byproducts after their exposure.
SSPC-PA 2 is one of the most frequently specified standards for frequency and acceptability of dry film thickness measurements.
In this eCourse you will learn how to complete the measurements described in the standard. Through visual examples, many filmed at an actual job site, students will learn the frequency of spot measurements on pipe spools, test panels, coated steel beams and pipe sections. Students will also gain valuable practice in determining whether the film thickness in a given area conforms to the various coating thickness restriction levels available within SSPC-PA 2.
Purchase of this course includes a one-year subscription and is non-refundable. Students will have access to all course materials for a period of one year from the date of registration. All course work must be completed during this time period. Extensions or transfers cannot be granted.
Stray current is a major concern for the track utility and infrastructure owners in the vicinity of thedirect current (dc) powered rail transit system.Stray current leakage and the corrosion caused by these currents is more of an issue in low resistivity soils and embedded tracks which typically run through major traffic areas city centers and tread between utility lines that require the rail to be continuously isolated to provide superior track-to-earth resistance.The absence of specific national stray current control and/or mitigation standard or guideline in the U.S necessitates the need to produce contemporary standards and guiding principles for the transit providers and corrosion consultants to match the advancements made in other sectors of the rail transit system. The author thus prepared a guidebook for the Transit Cooperative Research Program (TCRP) documenting best practices for those seeking guidance on design maintenance and testing of stray current control for dc powered rail transit systems. The guidebook is a resource that can be put into use immediately by stray current corrosion consultants transit agency owners and corrosion testing and maintenance providers.This guidebook includes the study of both national and international transit agencies. It is formatted as a reference guide to provide a user-friendly framework of consolidated guidelines and recommendations that will help in mitigating and/or eliminating stray current leakage from dc operated rail tracks using the data collected from transit agency and corrosion consultant interviews stray current corrosion survey questionnaires and field testing of a mix of 30 transit agencies (21 national and 9 international).This paper discusses “Lessons Learned” on the problems of surveying the transit industry how they were overcome and the results of a case study on issues related to stray current effects from one of the transit agencies that were used in preparing these consolidated guidelines and recommendations.