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Wind74

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Posts: 19
Reply with quote  #1 
I was wondering if anyone could provide insight as to what/ how to specify a maximum overall vibration limit when ordering a new package boiler? I have a pretty good understanding of rotating equipment specifications but I am not sure where to find information about boiler vibration in general. Thanks in advance for any help someone provides as there is a vast amount of experience and knowledge collected on this site.
Walt Strong

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Posts: 889
Reply with quote  #2 
I assume you are concerned about boiler walls. You might consider placing a vibration limit based on a delta change over the entire fuel firing range. I once worked on a large package boiler with very high boiler wall vibrations that I diagnosed as caused by burner instability. I was surprised to learn that gas fired burner can be more unstable that oil fired burner. I don't recall a vibration criteria associated with that job, other than the very obvious combustion "roar" or instability at a particular firing rate. There was no Internet to search then as there is now!

Walt
Wind74

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Reply with quote  #3 
Walt, I think this the right track.  I am being asked my opinion on what overall vibe level a manufacturer should be held to when ordering a new boiler.  I believe the concern is exactly over what you described.  
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