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Chemical corrosion control. Chemical corrosion can destroy the containment materials in contact with a process. Means exist to mitigate and even prevent chemical corrosion.
Chemical Corrosion Control Read More »
This article provides an overview of several of the most important root cause prevention techniques to minimize corrosion, scaling, and fouling in steam generating systems. A follow-up piece will outline instrumentation that is vital for these efforts.
“How dare you mix the modern word predictive with the ancient concept of running equipment to failure! Those are on opposite ends of the maintenance maturity spectrum! See the graphic below… what is wrong with you!”
What is Predictive Run to Failure? Read More »
The focus of the previous installment was on cooling water microbiological fouling and control basics, as fouling can cause the most prompt and intense damage in cooling systems. However, scaling and corrosion can be problematic as well. Because scale and corrosion control programs often overlap, the next two installments will outline, respectively, primary scale-forming and corrosion mechanisms (scale formation in cooling water systems). We will tie these together in Part 5 when examining the evolution of scale/corrosion control programs.
Scale Formation in Cooling Water Systems: Protecting Cooling Water Systems, Part 3 Read More »
This article explains metal corrosion basics – the process including the basic chemistry of how metal loss occurs. Methods to control corrosion are also listed and explained. Metal corrosion is a chemical reaction between a metal surface and its environment. Corrosion can occur in a gaseous (dry) environment or a damp (wet) environment. It is the result of an electrical process in which electrons are exchanged between the corroding metal atoms and the acceptor element atoms. Corrosion control involves stopping or minimising the loss of electrons between the components involved in the process.
Metal Corrosion Basics Read More »
Recoating based on visible rust is a form of reactive maintenance, when coating failure and rust formation are the reason for repairs or replacements. Erosion is a far more effective reason for recoating. Maintenance based on erosion is a form of preventive maintenance where repairs are performed to prevent a more serious future failure.
Coating Care: Erosion vs. Corrosion Read More »
Any number of impurities can cause scaling and corrosion in boilers unless properly controlled. But even with properly-treated makeup, boilers require internal treatment to minimize corrosion and other problems. The high-temperatures and pressures in boilers magnify chemical reactions and corrosion mechanisms. This installment examines important boiler water treatment concepts.
Boiler Water Chemistry Control: Preventive vs. Reactive Maintenance Read More »
Reliability Block Diagrams have been around for a very long time, helping system engineers understand how the various elements, and their relationships, could impact the overall reliability and operation of the system. Taking the effort to diagram a system logically can provide great insight into where the weak links are. In some cases, an RBD can expose that your assumed redundancies are not actually as effective as you think they are.
Back to Basics: Understanding Reliability Block Diagrams (RBD) Read More »
A simple fault-finding technique. Fixing plant and equipment about which you know little is daunting. Here is a simple way to help you successfully find faulty or failed equipment.
A Simple Fault Finding Technique Read More »
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