Data model of long-distance pipeline integrity and its establishment

Data management is the basis of pipeline integrity management. Through comparison of available pipeline data models, referring to theories and applications of pipeline integrity management around the world, and considering the operation experience and necessity of long-distance pipeline integrity management in China, the data model of longdistance pipeline integrity has been established with APDM's advantages in data gather division and spatial information management. The model is mainly based on data structures of multiple data sets, such as accident hazard, identification and assessment, inspection and evaluation, and subsea pipeline. It uses more detailed elements of pipeline flaws, hazard origin, inspection way, areas with high consequences, risks and integrity evaluation information, and also unifies the reference standards of data types, topology mode and format precision. Moreover, data dictionary has been established. Combined with Geodatabase spatial database, central line features and element expression rules along the line have been decided to develop database of pipeline integrity management. The data model of long-distance pipeline integrity has been applied in the integrity management of a crude oil pipeline, which can basically meet the needs for data management of the pipeline.