The greatest use of high-temperature water and steam is in electrical power generation. Historically, fossil fuels were used almost exclusively to heat water and make steam until the introduction of nuclear power steam generators in the second part of the 20th century.
Corrosion Basics don’t get any more basic than the definition of corrosion as the deterioration of a material, usually a metal, that results from a chemical or electrochemical reaction with its environment. Almost all materials should be expected to deteriorate, to some extent, with time when exposed to the elements. Corrosion is a perfectly natural process, as natural as water flowing downhill.
Although the corrosion rate of bare steel tends to decrease with time in most cases, the difference in corrosivity of different atmospheres for a particular alloy is tremendous.
Steel is fairly uniform in texture, and workers are familiar with the proper ways to prepare and coat it. In contrast, concrete is quite porous and uneven in texture, with differences in density from one square inch to the next.
General, or uniform, corrosion is usually the least threatening type of attack because associated metal loss is distributed over a wide surface area. Unfortunately, most corrosion encountered in engineering practice is of a more localized type. Localized corrosion can be defined as selective attack at limited special areas or zones on a metal surface in contact with an environment.
Corrosion professionals in North America and Europe have experienced another year of continued growth in career opportunities and salary levels, according to the 2015 Corrosion Career Survey conducted by Materials Performance magazine.
To successfully communicate the wide variety of corrosion-related issues affecting corrosion professionals today, MP is actively encouraging corrosion control professionals worldwide to submit technical articles to share their corrosion-related experiences with over 36,000 NACE International members around the globe.
The third and final aspect of defining our core ideology relates to the question, “What is it that we do?” In strategic planning parlance, this is called a mission statement. A mission statement describes what we do to fulfill our core purpose. Let’s recall our core purpose, or why we exist in the marketplace.
Regular inspection, monitoring, sampling, and chemical treatment activities are needed to mitigate corrosion. Data are not always adequately reported on a regular basis, however, which could gradually render an asset integrity management system less effective.
The principle of a close-interval potential survey is to record the pipe-to-soil potential profile of a pipeline over its entire length by measuring potentials at intervals that do not significantly exceed the depth of the pipe.
A collection of antique instruments illustrates the rich history of the East Bay Municipal Utility District’s corrosion department.
Average annual salaries in 2016 are reported for corrosion professionals in the United States, Canada, United Kingdom, and Europe. A slight gain was seen for the United States and United Kingdom, while a larger increase was recorded in Canada.
The 2016 revised NACE No. 13/SSPC-ACS 1, “Industrial Coating and Lining Application Specialist Qualification and Certification” standard includes up-to-date information for qualifying the coatings and linings application specialist.
Surface preparation and coating application during the new construction of a vessel compose a complex orchestration that requires the coordination of every department in a shipyard. It is also one of the most expensive parts of building a new vessel.
The application of a coating can greatly reduce the amount of current required to obtain cathodic protection. In addition, good coating can significantly improve attenuation characteristics along a pipeline.