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Posted by Tom Stanton on July 19, 2002 at 07:19:06:
In Reply to: boiler explosions posted by dpbeaird on July 18, 2002 at 16:42:17:
When you say boiler explosion, do you mean the actual pressure retaining parts of the boiler or do you mean a furnace explosion, although a severe enough furnace explosion could result in a boiler explosion. I agree with Harold's response. If you are looking for reasons for a furnace explosion, the most common are improper purge sequence, delayed ignition and operator screw-ups, not necessarily in that order. Boiler explosions can occur from over-pressure, flame impingement, scale/sludge build-up, low water, metal fatigue. If you look at the National Board incident report @ Nationalboard.org you will find the vast majority of acccidents are attributed to low-water, operator error and poor maintenance.
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