A process mixer is one of the least understood pieces of rotating equipment in a process plant. There are literally hundreds of them from small portable mixers to large main reactor mixers. Because it is similar to a gear box, and lumped in with other rotating equipment, its performance is seldom questioned. […]
Historically, reliability was realized through Preventative Maintenance (PM). It was routine to replace components on a time schedule based on best practices at the time. This included bearings, seals and lubrication. However, it was realized that these compenents could be perfectly fine and did not need replacement. Predictive Maintenance (PdM) soon replaced PM schedules. With […]
When rotating equipment fails, it is quite common to perform a root cause failure analysis (RCFA). The RCFA, unfortunately, is not done properly, as it only captures the first level of what failed and what likely caused the failure. A true RCFA will look at several levels of failures and why an event occurred. […]
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