Method for in-tube flaw detection

Method for in-tube flaw detection

The claimed method of in-tube inspection of a pipeline is effected by passing through the pipeline an inspection pig carrying monitoring transducers responsive to the diagnostic parameters of the pipeline, means for measuring, processing and storage of the measurements data by periodic interrogation...

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Hauptverfasser: Desyatchikov, Alexandr, Bazarov, Alexandr, Karasev, Nikolai, Kirichenko, Sergei, Slepov, Andrei, Smirnov, Anatoly
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Sprache:eng
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creator Desyatchikov, Alexandr
Bazarov, Alexandr
Karasev, Nikolai
Kirichenko, Sergei
Slepov, Andrei
Smirnov, Anatoly
description The claimed method of in-tube inspection of a pipeline is effected by passing through the pipeline an inspection pig carrying monitoring transducers responsive to the diagnostic parameters of the pipeline, means for measuring, processing and storage of the measurements data by periodic interrogation of the monitoring transducers during the travel of the inspection pig and processing and storage of the measurement data. The method is characterized in that during the travel of the pig with a period not less than the cycle time of the monitoring transducers the velocity of the inspection pig is determined, and the cycle time of the monitoring transducers is set as a function of at least two values of the pig velocity determined during its travel. The period of determining the inspection pig velocity makes 200-2000 cycles of interrogation of the monitoring transducers. The cycle of interrogation of the monitoring transducers is given a value from a number of discrete values in a series of at least 3. The realization of the claimed method allows one to avoid overflow of data storage module during a slow movement of the pig, as well as an unjustified change of the cycle time of the monitoring transducers at short-term changes of in the pig velocity.
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title Method for in-tube flaw detection
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