METHOD FOR DETERMINING REMAINING SERVICE LIFE OF PIPELINES FOR SEWERAGE AND HEATING NETWORKS Russian patent published in 2023 - IPC G01N3/00 F17D1/00 

FIELD: hydraulics.

SUBSTANCE: method for determining the remaining service life of a pipeline includes measuring the thickness of the layer of internal deposits in the pipeline and the actual flow rate in it. As a criterion for assessing the remaining service life of a pipeline, the coefficient of hydraulic efficiency of its operation is used, which takes into account the change in the hydraulic characteristics of the pipeline depending on the thickness of the layer of internal deposits. The value of the specified criterion is calculated taking into account the measured characteristics, the residual service life of the pipeline is determined by comparing the calculated value of the efficiency coefficient of its operation K_eff with a threshold value selected on a scale of threshold values, including the first range of values - from 0.9 to 1, the second - from 0.8 to 0.9 and the third - less than or equal to 0.8. Moreover, if K_eff lies in the first area, then the residual service life is no more than 5 years, if it lies in the second area - no more than one year, if it lies in the third area, the residual service life of the pipeline is exhausted.

EFFECT: making it possible to determine the residual service life of a metal pipeline for a sewer and heat pipe.

1 cl, 2 ex