TESTING METHOD OF PIPELINE FOR SAFE INTERNAL OPERATING PRESSURE WITH EVALUATION OF HAZARD OF EXISTING DEFECTS IN PIPELINE, AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2013 - IPC G01M3/28 

FIELD: machine building.

SUBSTANCE: testing method of pipelines consists in the fact that pipeline testing device is placed into the pipeline, moved along the pipeline or to a certain section of pipeline. At each step of movement the device imposes the load on the pipeline wall, which is equivalent to the rise of internal pressure of pumped medium. Signals of acoustic emission, parameters of stress and strain state of the pipeline wall, geometrical and temperature changes are recorded during the loading process by means of sensors installed on the device. As per the loading parameters of the pipeline and recorded readings of sensors there determined is actual safe internal operating pressure for the pipeline and activity of the existing defects in pipelines to the rise of internal pressure of pumped medium.

EFFECT: enlarging the possibility of performing the tests of pipelines; determination of actual safe operating internal pressure and evaluation of hazard of existing defects in the pipeline.

2 cl, 3 dwg