Tài liệu PIPELINE PIGGING TECHNOLOGY- P6 pptx

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. [...]... the landfall at Cruden Bay in Scotland This pipeline is part of the 380-km of offshore and onshore pipeline which makes up the Forties pipeline system (Fig.l) When laid, it represented the biggest offshore pipeline diameter (32in) that could be used at that time, being constructed of steel grade 5LX65 with a wall thickness of 19mm Design pressure of the pipeline was 2084 psig (I42bar) Since their discovery,... this waterm Pipeline Pigging Technology Fig.6 Profile vehicle 152 Please purchase PDF Split-Merge on www.verypdf.com to remove this waterm Inspection of the Forties sea line INSPECTION OPERATION RESULTS Each time the inspection vehicle was run through the pipeline, an initial assessment was carried out on the recorded data to ascertain both the quality of the data and also distance of pipeline inspected... The technical study acknowledged the fact that a pressure test, whilst being a valuable aid to the commissioning of new pipelines, was both costly and disruptive as a revalidation method and further, could not fulfil the requirement for a quantitative measure of pipeline condition A pipeline must be designed to withstand the operational stresses associated with transportation of the product, and must... 30-in crude oil pipeline between Kinneil and Dalmeny in Scotland Following this operation, and the subsequent inspection of the 213km, 36-in Forties landline between Cruden Bay and Kinneil, an agreement was reached between BP and British Gas to produce a 32-in inspection system to inspect the Forties submarine pipeline linking the Forties field with the landline at Cruden Bay in Scotland PIPELINE DETAILS... size and subsequently monitor a particular type of corrosion thought likely to be found in the pipeline This paper outlines the development work carried out on the inspection system and the methods of reporting used to assist BP in monitoring the condition of the pipeline INTRODUCTION High-pressure steel pipelines have become strategically placed in many countries as a means of energy transportation... 1986/7 of part of the main sea line riser The riser contained the internal metal-loss characteristic 145 Please purchase PDF Split-Merge on www.verypdf.com to remove this waterm Pipeline Pigging Technology Fig.l The Forties pipeline system 146 Please purchase PDF Split-Merge on www.verypdf.com to remove this waterm Inspection of the Forties sea line of individual corrosion pitting, general corrosion... Split-Merge on www.verypdf.com to remove this waterm Pipeline Pigging Technology Fig.2 An example of internal corrosion In each of the inspection operations, British Gas supplied all the launching and receiving equipment necessary to handle the vehicles and hence perform the operations efficiently Three types of vehicles were run by British Gas in the pipeline: a cleaning vehicle, profile vehicle and... inspection vehicle 149 Please purchase PDF Split-Merge on www.verypdf.com to remove this waterma Pipeline Pigging Technology Fig.4 Performance specification The multi-profile vehicle run (Fig.6) is a deformable vehicle which represents the outside diameter and length of the inspection vehicle and thus proves the pipeline bore to be acceptable for an inspection vehicle run and minimizes the risk of either... revalidation of its 17,000km of high-pressure gas transmission pipelines in the 1970s, the corner-stone of which was to replace the traditional hydrostatic pressure test with a more quantitative and cost-effective means of assessing pipeline integrity Detailed technical and investment appraisals confirmed that, for defined categories of pipeline defect, on-line inspection would have major performance... remove this waterm Pipeline Pigging Technology Fig.7 Pipewall thickness statistics - operation 1 In addition to these pipe-wall thickness statistics, a general assessment of girth weld condition was given in the form of a simple grading system, which identified uncorroded welds, corrosion less than 10% depth, and corrosion greater than 10% depth In addition to this overall view of the pipeline condition,