Why Perform UG-99 Hydrotest Stress Calculations?
ASME UG-99 Hydrostatic Test Stress Calculations ASME Code paragraph UG-99 requires that all vessels undergo hydrostatic (or pneumatic) testing before Code stamping. As this test provides mechanical stress relief it may be thought of as the final step in the fabrication process. The UG-99 hydrostatic test is an effective way to screen for design, [...]