Tài liệu PIPELINE PIGGING TECHNOLOGY- P1 doc

Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. [...]... Key to conferences UKl UK2 US1 US2 US3 REHAB Pipeline pigging and integrity monitoring, Aberdeen, Feb 1988 Pipeline pigging and integrity monitoring, Aberdeen, Nov 1990 Pipeline pigging and inspection technology, Houston, Feb 1989 Pipeline pigging and inspection technology, Houston, Feb 1990 Pipeline pigging and inspection technology, Houston, Feb 1991 Pipeline risk assessment, rehabilitation and repair,... ultrasonic pigs The ultrasonic stand-off method Ultrasonic pipeline inspection tools The assessment of pipeline defects detected during pigging operations On-line inspection data Calculating the failure pressure of corrosion in pipelines Safety factors on failure pressures A methodology Bi-directional ultrasonic pigging: operational experience Pipeline, pig and other details Corrosion surveys with the... Inspection Interpretation of intelligent-pig survey results Acquisition of pipeline data Risk assessment and inspection for structural integrity management Goal of pipeline integrity programme Risk assessment and pipeline integrity Indentifying pipeline integrity projects Costs and benefits Internal cleaning and coating of in-place pipelines Surface preparation Coating materials Coating application Case... completely-revised, edition of Pipeline Pigging Technology is essentially a compilation of selected papers presented at the conferences organized by Pipes & Pipelines International and Pipe Line Industry in the UK and the USA between 1988 and 1991 The book is thus a successor to the first edition, published in 1987, and brings readers up-to-date with the rapidly-developing technology of pipeline pigging Although... the same time, the Pigging Products and Services Association was developing into a healthy organization with increasing membership, while the world's first long-distance gas pipeline designed with a total commitment to intelligent pigging was being constructed in the North Sea These three discrete activities show that the hydrocarbons pipeline industry is paying increasing interest to pigging, which is... for soil and construction debris to find its way inside the pipeline Such debris could wreak havoc with 5 Please purchase PDF Split-Merge on www.verypdf.com to remove this waterm Pipeline Pigging Technology the operation of the pipeline by blocking downstream filters, damaging pump impellers, jamming valves open, and so on In some instances the pipeline operator may reason that small amounts of debris... Here vacuum pumps reduce the internal pressure in the pipeline so that the water boils and the vapour is sucked out of the line PIGGING DURING OPERATION If pigging is required during operation, then the pipeline must be designed with permanent pig traps, especially when the product is hazardous As was mentioned above, it is far better to avoid pigging if possible, but for some operations it is the... to pigging for this application For example, it is possible to add pour-point depressants to inhibit wax formation, or it is possible to add flow improvers which reduce turbulence and increase the hydraulic efficiency of the pipeline For a given pipeline, the choice will depend on the reduction in pumping costs against the cost of pigging or chemical injection, if indeed there is a net gain Regular pigging. .. intentionally left blank Please purchase PDF Split-Merge on www.verypdf.com to remove this waterm Why pig a pipeline? WHY PIG A PIPELINE? INTRODUCTION 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... www.verypdf.com to remove this waterm Pipeline Pigging Technology brushing would be flushed out in front of the pigs and kept in suspension by the turbulent flow The pipeline would then be flushed and swept out by batching pigs until the particulate matter in the flow had reduced to acceptable levels Fig.l shows typical brush and batching pigs Following brushing, the longer the pipeline the longer it will take