Preventive Maintenance

scale formation in cooling water systems

Scale Formation in Cooling Water Systems: Protecting Cooling Water Systems, Part 3

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.  

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Metal Corrosion Basics

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.

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Boiler Water Chemistry Control: Preventive vs. Reactive Maintenance  

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.

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Back to Basics: Understanding Reliability Block Diagrams (RBD)

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. 

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predictive maintenance in manufacturing two people working

What is the Value of Failure Prediction – Early Warnings?

We like to be warned about things well ahead of time: when to buy or sell a stock, when we can expect 3 to 6 inches of snow, etc. The same could be said about the equipment and systems that drive your processes every day. These critical and expensive assets are expected to produce the valuable products your company is known for with little or no interruption. We might have a reasonably clear picture of how things look today, but what about 30 days from now? Wouldn’t it be beneficial to have a picture of what our systems might look like that far into the future… and have confidence in that view?

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Preventive vs. Reactive Maintenance:  Don’t Neglect Makeup Water and Condensate Return Treatment – Part 2

Many impurities may transport to boilers via contaminated condensate return. Boiler tube and steam system failures are usually much more costly than preventive installation of treatment equipment and chemistry programs. This article touched upon only some of the important condensate return issues, but will hopefully galvanize readers to focus on these critical topics. 

Preventive vs. Reactive Maintenance:  Don’t Neglect Makeup Water and Condensate Return Treatment – Part 2 Read More »

Preventive vs. Reactive Maintenance: Don’t Neglect Makeup Water and Condensate Return Treatment

Makeup water and condensate return treatment systems are often neglected until boiler failures occur, resulting in a reactive response by plant management. Such failures can cripple production and be enormously expensive. Much more importantly, some failures may jeopardize employee safety. This article examines the importance of proper operation and preventive maintenance of industrial makeup water treatment systems and the benefits that arise therefrom. 

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