TAILIEUCHUNG - PIPELINE PIGGING TECHNOLOGY- P13

PIPELINE PIGGING TECHNOLOGY- P13: Why pig a pipeline? This paper introduces a number of reasons for doing so, together with a discussion of the advantages and alternatives. In general terms, however, pigging is not an operation to be undertaken lightly. There are often technical problems to be resolved and the operation requires careful control and co-ordination. | Pipeline Pigging Technology The effect of the latest technology is even more pronounced in data analysis. Initially the IBM AT s graphics speed was slow and annoying for the evaluating technician. The desired work flow speed was only realized with the introduction of the Compaq Deskpro 386 series PC which has a 20MHz clock frequency. The story is similar for the various storage mediums. The floppy discs streamers and Winchester discs available at the beginning of the pig s development were not suitable to store and handle the vast amount of data subsequently made available. The problem was solved only when the optical disc with a storage capacity of 800MBytes was introduced. This disc has a large storage capacity random access and is handy for archiving purposes. The situation becomes even more problematic when pigs for smaller pipelines . 6-in 150-mm are designed. Only those electronic components which are based on SMD Hybrid and LSI technology can be used. The magnetic tape recorders that are used in these smaller-diameter pigs are based on relical scan recorders which have appeared only recently on the market. CONCLUDING REMARKS The UltraScan corrosion pig is the first internal pipeline inspection tool that permits direct quantitative measurement of remaining wall thickness and scans the entire inner surface area of a pipeline. The development was well timed with the 16-bit microprocessor technology and other advanced components required for the building of small-diameter tools having only just appeared on the market. 342 Please purchase PDF Split-Merge on to remove this watern High-accuracy calliper surveys HIGH-ACCURACY CALLIPER SURVEYS WITH THE GEOPIG PIPELINE INERTIAL GEOMETRY TOOL IN THE DEVELOPMENT of the inertial geometry pig Pigco recognized the need for relating the pig position to the pipe wall. The sensors used for this during some of the initial runs provided a very good picture of the inside of the pipe wall. To meet the need for

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