[Steam-engine] Annual Boiler Steam Test?

[JEFF LUND]

This test would be less stresfull on the boiler than a
hydro, but only proves that your blower works ell, and
that your relief valve opens and closes properly.


--- Dan Donaldson <ddonaldson at tampatank.com> wrote:
> Quote :
> " In England, where there are a large number of
> steam societies and numerous
> hobbyist built model boilers, there is a practice of
> performing a steam test 
> to
> prove the setting and capacity of safety valves.
> This is performed with a
> "good fire" and the blower "full on." A successful
> test is one where the 
> boiler
> pressure does not rise more than 10% above the
> working pressure."
> 
>     I may be wrong but isn't that the purpose of
> calculating your heating 
> surface area and grate area.  That calculation
> should determine the amount 
> of steam you can produce and in turn determine the
> size releif valve 
> required.  Some let me know if I am wrong about
> that.
> 
> Dan Donaldson
> 26 HP Advance Straw Burner
> 
> 
> ----- Original Message ----- 
> From: <PWTraubert at aol.com>
> To: <steam-engine at lists.stationary-engine.com>
> Sent: Monday, March 07, 2005 11:49 PM
> Subject: [Steam-engine] Annual Boiler Steam Test?
> 
> 
> > Has anyone ever heard of a requirement of
> performing a steam test of a 
> > boiler
> > in excess of working pressure?
> >
> > In England, where there are a large number of
> steam societies and numerous
> > hobbyist built model boilers, there is a practice
> of performing a steam 
> > test to
> > prove the setting and capacity of safety valves.
> This is performed with a
> > "good fire" and the blower "full on." A successful
> test is one where the 
> > boiler
> > pressure does not rise more than 10% above the
> working pressure.
> >
> > Texas has an exemption from inspection for boilers
> below a certain size. 
> > The
> > age and code of construction of the boiler does
> not constitute a part of 
> > the
> > exemption. In order to be covered in case of an
> injury the group I am
> > associated with has adopted a set of standards to
> cover Texas exempt 
> > boilers. A
> > proposal has been made to add a steam test of 1.25
> X working pressure. 
> > This is in
> > addition to the 1.5 X working pressure hydrostatic
> test.
> >
> > Is it just me or is a steam test really necessary?
> What would it prove? I 
> > am
> > totally against it. This is especially true for
> historic boilers like the
> > definition that the National Board has put forth
> in their recommended 
> > inspection
> > practices.
> >
> > Thoughts? Ideas/
> >
> > Thanks,
> >
> > Patrick Traubert
> > Plano, TX.
> > _______________________________________________
> > Steam-engine mailing list
> >
>
http://www.stationary-engine.com/mailman/listinfo/steam-engine
> > 
> 
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