Australian standards require periodic testing of pressure vessels but I
don't recall the interval. There is a formula which multiplies volume by
pressure . If the product is below a certain figure it is not regarded as a
pressure vessel and is exempt from testing. If you aren't required by law
to do it, don't bother. The chances of a catastrophic failure due to
fatigue, are pretty small at the stresses that would apply in most
non-industrial applications. Its more important to check for rust patches in
the tank. As water is usually deposited in the tank it quite often rusts
badly on the bottom. That is the most common source of trouble in air
receivers

Tom


"Bert" wrote in message
...
Is it common practice to have air compressor tanks hydrostatically
tested or otherwise tested periodically? Can the typical test facility
handle a 60 or 80 gallon or bigger compressor tank? Is testing
something you would normally do if buying a used compressor, or are
these things so overbuilt that it's not something to worry about,
barring obvious corrosion or other damage?

Bert