Get Your Bearing on Brinelling
Greg Mecomber of IDCON INC sits down with several industry experts from Regal Rexnord to discuss brinelling failures, true/false brinelling, maintenance, and prevention.
Greg Mecomber of IDCON INC sits down with several industry experts from Regal Rexnord to discuss brinelling failures, true/false brinelling, maintenance, and prevention.
A standard centrifugal pump impeller is constructed of a group of elongated, solid-walled chambers attached together in the shape of a circular ring. The ring is spun quickly and the liquid that enters the inside end of the chambers is flung out at high speed from the other end. Figure No. 1 shows a section through centrifugal pump wet-end showing regions of low and high pressures.
Clear labeling of equipment numbers in the field is a quick way to improve many aspects of your work management processes. Some benefits of field labeling equipment include: better work identification, less risk of lockout/tagout mistakes, faster troubleshooting of process upsets, and more efficient preventative maintenance routes.
I often hear the words “relays” and “contactors” used seemingly interchangeably, but there must be a technical difference, right? So, I took a quick trip to Rexel Automation Solutions in Salisbury, MD to meet with Nate Titus, Account Manager, and get the skinny on these beloved but sometimes pesky industrial workhorses.
Electric motor problems. This article presents a basic explanation of electric motor construction and operation along with twelve problems that can be encountered with their use. Most electric motors in industrial equipment are three phase alternating current induction motors. Induction is the creation of an electric current across a gap. Two types of induction motors are commonly used: squirrel-cage and wound- rotor. The names come from the way they are built.
The previous article in this series, “Understanding Shaft Alignment: Thermal Growth,” explained thermal growth and its affect on proper equipment alignment. A practical example involves a recent project at a wastewater treatment plant in Cleveland that needed realistic cold alignment targets for a 3600 rpm compressor to reach their accurate alignment targets.
This article covers the two main plant numbering systems that together form the framework on which all maintenance programmes are based and describes the value that can be created by integrating these identification systems. These two systems are: Equipment Numbers, or more accurately, Equipment Location Numbers Stock-Keeping Unit (SKU) numbers or, preferably, Material Catalogue Numbers. A third, less critical but still important numbering system for Stores location (or “bin”) numbers, is also included.
Chillers and their refrigerants require ongoing preventative maintenance. Preventing refrigerant from leaving, preventing air from entering, and preserving refrigerant quality are all a part of chiller maintenance. By maintaining your chillers and by preventing chiller leaks you will also keep your operating costs down.
Nowadays most everyone has a powerful computer in their pocket, their phone. Many of us are using them in maintaining our plants. Whether you are neutral or a devotee of the iPhone or Android devices, I think it’s safe to say we have only just scratched the surface of possibilities for using our smartphones to maintain our plants. Just think about how good it is to always have a great camera in your pocket with pictures viewable instantly. Does anybody remember the hassle of film? Waiting days to find out if an image was captured and how well it looked.
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Torbjorn Idhammar is the blog manager for MaintenanceWorld.com.
A maintenance and reliability management consultant, Torbjorn has spent 25+ years in the profession and provides advice to clients around the world.
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