No abstract

For more than ten years the Diagnostic Scientific and Technical Center (DSTC) "Defectoskopiya" is engaged in the development of flaw detectors using magnetic inspection method. The main object of testing were the pipes with their diameters ranging from 1020 mm to 1420 mm and wall thickness up to 28mm. The “Orbita” Magnetic Diagnostic Complex (MDC) is the newest detector developed. It is designed for automated pipe body testing using magnetic method. MDC “Orbita” allows searching and identification of such common defects as pitting corrosion, stress corrosion, cracking, pipe wall separation, as well as changes in the pipe geometric parameters such as jam, flutes, nicks. MDC “Orbita” performance features are the low weight, easy transportability and maintenance, indiscriminateness to the operating personnel qualifications. The efficiency and reliability of the MDC “Orbita” components and assemblies were tested on a real pipe in field conditions (in the column for the removal of the insulating coating during the works of re-isolation section of the main ø1420 mm gas pipeline "Urengoy-Novopskov" 3007-3030 km), as well as in the pits (the main gas pipeline "Petrovsk-Novopskov" Bubnovsky LPU MG OOO "Gazprom transgaz Volgograd" on 325 and 326 kilometres MG "Petrovsk-Novopskov") during the period of April 21-23, 2015. MDC “Orbita” is designed for external inspection of pipes coated with insulating material, or after purification, in the pits, on the inventory of resting after pruning, as well as in the column with a cleaning machine. Operation with the scanner can take place at any time of the day, in the ambient temperature range from -200C to +400C in any weather conditions. The operating personnel amounts to not more than two persons, the deployment time (loading from a fully disassembled state until you are ready to work including erection onto the pipe) takes not more than 15 minutes. Mounting on a pipe in the assembled state takes not more than 1 minute. Scanner weight does not exceed 25 kg, and when assembled it can be transported by any means of transport. Automated scanner flaw-detector tests showed the claimed technical characteristics, high reliability, the reliability of the scan results, and its handiness.