Calculations for Testing Pressure Vessels

According to the standards to which the test will be related.

Is this during construction or inspection during maintenance?

Hello the Hammer,

its during maintenance prior to inspection before authorization for use at a rated pressure.

Kind regards

jsilomba

1.5 times design pressure if it operates at 100°F or less. If it operates at a higher temperature you multiply this by the ratio of the material's allowable stress at 100°F and the allowable stress at the design temperature.

Please see the ASME Boiler and Pressure Vessel Code Section VIII Devision 1 Subsection A Part UG. Particularly paragraphs UG-90 through UG-103. The test pressure for hydrostatic testing is described in paragraph UG-99 and pneumatic testing described in paragraph UG-100.

If you haven't calculated the maximum allowable working pressure or if you haven't done any calculations then you may need to qualify the vessels using a destructive test as outlined in paragraph UG-101 but this will require destroying a vessel.

These vessels were obviously not built to code because if they were then you would already know how to test them. It is advisable for the safety for all involved that you obtain pressure vessels from a licenced code stamp shop.

A good reference is PRESSURE VESSEL HANDBOOK, by Eugene F. Megyesy, published by Pressure Vessel Publishing, Inc. P.O. Box 35365 Tulsa, Oklahoma 74153 USA.

There is also computer software that will guide you through the design process. It is called Compress provided by Codeware Inc., 3100 S. Gessner Rd., Suite 610 Houston, TX 77063. The codeware web site is:

http://www.codeware.com/