METHOD AND DEVICE FOR DETECTING CHANGES OR DAMAGES TO PRESSURE VESSELS WHILE OR AFTER UNDERGOING A HYDRAULIC PRESSURE TEST

摘要

The method involves conducting a sound stimulation of the pressure container (10) during the pressure testing and evaluating the sound spectrum stimulated on the pressure container. The sound stimulation is carried out at two or more different times during pressure testing, preferably for two different internal pressures. An independent claim is also included for a device for detecting variations in or damage to pressure containers during or after pressure testing.