Bottom Ash Elbow Repair PROBLEM Case Studies A Western Utility experienced leaking in their bottom ash transfer line. This allowedflue gas to be released into the air, and there was concern of an immediate pipe failure requiring an emergency shutdowm. Since this was the weekend, there was no chance of getting an immediate replacement. This is a common problem as transfer lines carrying pulverized coal, fly ash, or bottom ash are subject to serious abrasion effects especially in the elbows and transition points. The enhanced abrasion occurs as the particulate stream is forced to change direction, impacting much of the particulate on the turning radius. Of the three materials, bottom ash is the most severe. Bottom ash, in addition to being extremely hard and crystalline has a wide range of p

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