METHOD identify potential accident-prone areas on the pipeline route SUBJECT stress corrosion cracking

摘要

A method of detecting potential accident-prone areas on the pipeline routes prone to stress corrosion cracking (SCC) comprising microseismic survey (MCC), locating local sections on lines pipelines with abnormally high levels of intensity technological and geodynamic vibrations construction schematic maps anomalies, it characterized in that the microseismic survey conducted (MCC) on the earth surface exactly over the highway operating gas pipeline in the range of from 0.1 to 10 0 Hz for passive monitoring of the interference field microseismic oscillations group (arrangement) wide-range vertical sensors displacement velocity, the seismic sensors sequentially moved along the linear profile, the distance is selected depending on the desired detail survey between observation points (seismic sensors) within the arrangement from 100 m - when the reconnaissance works to 5-10 m - detailed, observations at each location is carried out for at least 45 min, the results of observation processing s anomaly is isolated and geodynamic technological vibrations, the received data are in tabular form indicating the geographical coordinates of the epicenter of the anomalous portion, the transverse size anomalies, neotectonically binding hazard category, and as graphical images with the color reproduction characteristics of the spatial position of the main mapped anomalies.