Investigation: Failure of a steam generator
In case history, engineers search for root cause of water-side tube failures for a 23-year-old boiler
This case history investigated the water-wall tube failure of a
boiler (steam generator) that had been in service. At this
stage of the boilers life cycle, this steam generator was
experiencing several leaks. The failed tubes were examined to
uncover the root cause of the tubes bulging and leaks.
The investigation results revealed that a 1-mm thick deposit in
the inner surface of the water-wall tubes was the root cause
for the tube failures.
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