[Steam-engine] hobby boilers

[travis brown]

As a newcomer to the group, I was researching an old thread and would like to offer a few questions/comments.
 
It would seem that when it comes to the area of boilers for steam traction engines there are actually three clasifications one could divide these boilers into, according to the categories the boiler inspectors regard these as.
 
1)  The original boilers on steam traction engines produced by the factories.  These are often called "historic" boilers and these seem to be the category Morris Snow was focusing on.
 
2)  "New" ASME code boilers.  If used on a steam traction engine for exhibtion purposes(And who isn't) these are classified as hobby boilers by many jurisdictions.  I use the term new loosely as it could encapsulate a whole range of years, but mainly is made up of the new era of construction, with modern techniques and materials.  
 
3)  non-code boilers.  Mainly these are on scale models, but could be on a whole variety of steam operated devices.  In my research, the majority of these are welded constrcution and as described in the other categories, are used for exhibition purposes.  I own one of this category.
 
Now for a couple of questions.  I am researching how many states allow the use of scale model engines with non-code boilers.  I would like to know if any members have information along those lines, as simply researching state regulations is not sufficient.  Also, I have unable to document any incident of any such boiler ever suffering a major failure that resulted in injuries.  If anyone has knowledge to the contrary, I would appreciate hearing of it.  Thanks 
 
tb   

		
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