NACE kicked off its annual Corrosion Conference & Expo on March 26 with President Sandy Williamson wielding the larger-than-life scissors at the 2017 ceremonial ribbon-cutting. Visitors on opening night were greeted by a New Orleans jazz band as they entered the Ernest N. Morial Convention Center. Organizers said more than 6,000 attendees registered for the event, which would represent an increase over last year. With hundreds of exhibits showcasing products and services on display, the mood among visitors and exhibitors would best be described as ranging from cautiously optimistic to upbeat. “This has been a […]
Ashraf Bastawros, professor of aerospace engineering at Iowa State University, has received a $300,000 grant from the Department of Transportation’s Pipeline and Hazardous Materials Safety Administration (PHMSA). Along with Dr. Kurt Hebert, Dr. Pranav Shrotriya, and Dr. Leonard Bond from the Center of Non Destructive Evaluation, Bastawros will develop advanced detection methods to calculate the physical and mechanical changes associated with early stress corrosion cracking in high strength pipeline steel. The United States currently has almost 210,000 miles of liquid pipeline, with some of those pipelines ranging in age from 50-80 years old. As those […]
Corrosion monitoring of oil and gas installation usually peaks during the operations/production stage, but each stage of the project is (design, construction, commissioning, operations, maintenance/shutdown time) is equally important for these facilities. The activities carried out during the design/commissioning stages are necessary for efficient production because corrosion monitoring will be carried out once the facilities are in operation. Compare corrosion monitoring to the watchful eyes of an eagle: macro to minor, nothing is too small to be ignored. This article discusses the importance of design, construction, commissioning, operations and shutdown activities along with the role...
Some pipelines and onshore facilities deteriorate slowly during operation and in certain cases have been reliable for more than their estimated lifetime. Other installations, however, exhaust their useful life after only two to five years of operation. There are numerous factors that affect the life of a pipeline and onshore facilities. These include construction quality, coatings, cathodic protection (CP) systems, the nature of the product or fluid, the external environment, operating conditions, materials selected and quality of after-installation maintenance. Ongoing Corrosion Problem Corrosion is one of the leading causes of failures in both gas and...
External corrosion on a pipeline pumping crude was the root cause of the rupture last May that spilled over 140,000 gallons of oil on the Santa Barbara coast, federal regulators reported. The spill occurred after pumps on the Plains All American Pipeline were shut down and restarted, sending a larger volume of oil surging through the 2-foot pipe at higher pressure, the Pipeline and Hazardous Materials Safety Administration said in preliminary findings. Reports of corrosion on the pipe and mention of the pump shutdown were not new, but regulators hadn’t previously announced the cause or […]
NACE Corrosion 2016, held March 6-10 in Vancouver, B.C., brought together a widely diverse representation of those involved in the coating and anti-corrosion materials fields. In all about 6,500 attendees whose interests ranged from applications for highway and bridge construction to wastewater projects, spilled into the Vancouver Convention Centre to visit about 350 exhibits, attend technical and research symposia – and, of course, network. For participants interested in fighting corrosion as it specifically affects the oil and gas industry there was plenty to be seen, too, with at least 260 exhibitors in attendance who listed...
Carbon dioxide (CO2) corrosion modeling software is used by asset owners, contractors and consultants in the oil and gas industry to predict the CO2 corrosion rate at both the design and operation phases of pipelines and well tubing. Prediction results from a dozen CO2 corrosion models are known to vary wildly. This article discusses the need for CO2 corrosion model validation and introduces the CO2 corrosion model validation matrix and index score system for an objective and effective validation of a CO2 corrosion model’s performance. Corrosion Model Validation CO2 corrosion is a recognized integrity threat […]
Oil and gas pipelines crisscross the nation beneath critical infrastructure, such as highways, railroads and waterways, as well as passing through population centers. Because over half of U.S. pipelines date to the 1950s and 1960s, corrosion prevention and related repairs are increasingly important to avoid pipeline failures that can lead to toxic spills or devastating explosions. Ironically, pipeline segments that lie beneath some of the most sensitive areas are also among the most difficult to inspect. Because these segments need extra protection to avoid damage from nearby excavation, settlement, traffic loads and erosion, the carrier […]
Over past decades there have been significant studies in various parts of the world on the cost of corrosion and how it affects a country’s economy. The often-cited 2002 study, “Corrosion Costs and Preventive Strategies in the United States,”1 revealed that the total annual estimated direct cost of corrosion was $276 billion – equivalent to approximately 3.1% of the U.S. Gross Domestic Product (GDP). Studies in other countries have shown a similar percentage of GDP. Over the last two years, NACE International embarked on a new study that goes beyond the economic effects of corrosion; […]
Computer-modeling technology has developed over a number of years and is now widely used to verify the performance of cathodic protection (CP) systems used in combination with coatings to manage the corrosion risk to underground assets. Modeling can be used to verify the protection provided by the CP system and optimize its design. For retrofit designs, modeling can be used to firstly gain a quantitative understanding of the state of the structures, the remaining life of existing anodes and estimated date at which loss of protection will occur. Modeling can also be used as part […]
Due to great chemistry and metallurgical innovations of the steel industry, higher strength steels have made significant strides, in specified minimum yield strength (SMYS), wall thickness control, toughness and weight per foot. However, one significant factor in these great improvements was no consideration for corrosion allowances. It has decreased with every incremental increase in the making of higher strength steels. Corrosion in carbon steel is the same whether it is a 35,000-yield pipe or an 80,000-yield pipe or 0.375-inch wall thickness (WT) vs. 0.215-inch wall thickness. Wall loss of 25% on 35,000-yield pipe results in […]