Reliability Engineering Snapshot TM

Illustrated Case Studies in the Maintenance Reliability Engineering World of Failure Analysis, Predictive Maintenance, and Non Destructive Evaluation



Lubrication - Case Study No. 110: Poor Housekeeping Ruins Open Gear


Tell-Tale Signs of a Rat

Good housekeeping means more than just making things look good and keeping the work place safer. It also means preventing equipment from getting contaminated.

The picture to the left shows a floor deck that has been washed down. The tell-tale signs of just how bad things were before washing down are the stains that remain on the floor. One piece of equipment (left side) that was on the right side of this picture prior to washing down, shows all sorts of product buildup on it. There is even visible remains of product underneath it. In the middle of the picture is an inspection door for a gear (circled red). Opening that door reveals a critical gear (picture lower left). Do you think that the product got through the small clearance between the inspection door and the floor? A quick jaunt down to the lower deck revealed that the coupling was buried in product. The white specs on the larger gear (lower left picture) are not flash marks from the camera, they are pieces of product. This is certainly not good for the gear and will cause excessive wear.


This picture is unfortunately the second picture in a new series entitled "I Give Up - Just Shoot Me Please."

Inspection Port for Ring Gear on Rotary Dryer Coupling is Buried and Digging its Way Out


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