Witek Maciej
Gas Engineering Group, Warsaw University of Technology, 20 Nowowiejska St., 00-653 Warsaw, Poland.
Materials (Basel). 2021 Feb 10;14(4):852. doi: 10.3390/ma14040852.
The main goal of this paper is to evaluate the burst pressure and structural integrity of a steel pipeline based on in-line inspection results, in respect to the grouping criteria of closely spaced volumetric surface features. In the study, special attention is paid to evaluation of data provided from the diagnostics using an axial excitation magnetic flux leakage technology in respect to multiple defects grouping. Standardized clustering rules were applied to the corrosion pits taken from an in-line inspection of the gas transmission pipeline. Basic rules of interaction of pipe wall metal losses are expressed in terms of longitudinal and circumferential spacing of the features in the colony. The effect of interactions of the detected anomalies on the tube residual strength evaluated according to the Det Norske Veritas Recommended practice was investigated in the current study. In the presented case, groups of closely-spaced defects behaved similarly as individual flaws with regard to their influence on burst pressure and pipeline failure probability.
本文的主要目标是根据在线检测结果，针对紧密间隔的体积表面特征的分组标准，评估一条钢质管道的爆破压力和结构完整性。在该研究中，特别关注使用轴向激励磁通量泄漏技术进行诊断所提供的数据在多个缺陷分组方面的评估。标准化的聚类规则被应用于取自输气管道在线检测的腐蚀坑。管壁金属损失的相互作用基本规则通过群落中特征的纵向和周向间距来表述。在本研究中，调查了根据挪威船级社推荐做法评估的检测到的异常相互作用对管道剩余强度的影响。在给出的案例中，紧密间隔的缺陷组在对爆破压力和管道失效概率的影响方面，表现得与单个缺陷类似。
