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This paper will explore the process of conducting asset integrity management systems and the potential use for the existing facility data to analyze integrity status and predict any breach of integrity that would cause a direct major incident. In the dawn of the 4th industrial revolution and in the age of automation and artificial intelligence, asset integrity management systems are being integrated into a more sophisticated process of verification. Programs are being used to collect necessary risk-based data from inspection, maintenance programs and operational checklists in order to rationalize the integrity status and alert proponents of possible breach of integrity. These systems are more efficient than humans in predicting possible failures based on collective data from several critical elements from a facility and calculate the probability of failure based on the current integrity status. It is possible to optimize such systems to eliminate the human error factor and optimize inspection, maintenance and operation programs to better manage asset integrity. The result would be a software that would provide an overview of the plant’s integrity status and provide early alerts of any incoming incident event which allows the facility’s management to act accordingly and direct resources for effective prevention and mitigation.
During the construction of a 56km long 16 in. carbon steel sour gas pipeline, repetitive surfacepreparation failures were detected during visual inspection of pipeline girth weld internal surface prior tocoating application. Such failures represented 67% of the total pipeline girth welds and were manifestedby excessive sharp-edges at the root pass. To identify the failure causes, an investigation wasperformed through reviewing the pipeline, fabrication and coating application specifications andprocedures, quality control records and performing an extensive visual inspection through an advancedvideo robotic crawler on all pipeline girth welds made. Upon investigation analysis, the failures werecaused by sharp-edges in the root pass which were attributed to improper practices duringmanufacturing, field fabrication and pre-coating quality control. The failure analysis indicated that themechanized Gas Metal Arc Welding process, with the parameters used, was not suitable for internalgirth weld coating application. In addition, a more stringent requirement should be applied to theacceptable pipe-end diameter tolerance and pre-coating quality control to ensure absence of similarpremature surface preparation failures. The pre-coating quality control can be improved throughutilization of robotic laser contour mapping crawler for precise detection and sizing of unsatisfactorysurface weldment defects, including sharp edges.
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