Visual/Hydro $

[craracer]

I'm a little confused. Why do you need to go to the LDS?

I copied this directly from a local hydro facility web site (Which also does O2, interior, exterior, etc cleaning to name a few of the services);

Hydrostatic Testing
Is an industry standard method of re-qualifying (certifying) pressure vessels (compressed & packaged gas cylinders) to determine whether they are safe for continued use. The process involves in-depth visual examinations of both the interior and exterior of the cylinder, along with a water pressure test of the cylinder. Hydrostatic testing, or cylinder re-qualifying, is required by the Department of Transportation for refrigerant cylinders, SCUBA tanks, SCBA tanks, aircraft cylinders, fire extinguisher cylinders, beverage (CO2) cylinders, and common compressed gas cylinders, such as: oxygen, argon, helium, nitrogen, hydrogen, air, nitrous oxide, and many others.

 

[duckbill]

I'm a little confused. Why do you need to go to the LDS?

I copied this directly from a local hydro facility web site (Which also does O2, interior, exterior, etc cleaning to name a few of the services);

Technically, a steel cylinder really should not require a visual sticker for the first year after hydro, but I don't know if shops would fill without a sticker even though a visual has obviously been satisfied as required by regulation.