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首页> 外文会议>25th International Conference on Offshore Mechanics and Arctic Engineering 2006(OMAE2006) vol.4 >BURST TESTS ON PIPELINE CONTAINING CLOSELY SPACED CORROSION DEFECTS
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BURST TESTS ON PIPELINE CONTAINING CLOSELY SPACED CORROSION DEFECTS

机译：包含紧密腐蚀缺陷的管道的爆破测试

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摘要

In this paper the burst tests of five tubular specimens are presented. In these tests the tubular specimens were loaded with internal pressure only. The specimens were cut from a longitudinal welded tube made of API 5L X80 steel with a nominal outside diameter of 457.2 mm (18 in) and a nominal wall thickness of 7.93 mm (0.312 in). The specimen IDTS 8 contains only one defect, herein called base defect. The base defect is an external flat bottomed defect with uniform width (circumferential dimension). The other four specimens contain groups of interacting defects constituted by the combination of three or more base defects. All the defects were machined using spark erosion. Measurements were carried out in order to determine the actual dimensions of each tubular specimen and its respective groups of defects. Tensile specimens and impact test specimens were tested to determine material properties. The failure pressures measured in the laboratory tests are compared with those predicted by five assessments methods, namely: the ASME B31G method, the RSTRENG 085dL method, the DNV RP-F101 method for single defects, the RPA method and the RSTRENG Effective Area method.
机译：本文介绍了五个管状标本的爆破测试。在这些测试中，管状样品仅承受内部压力。从API 5L X80钢制成的纵向焊接管上切下样品，其标称外径为457.2毫米（18英寸），标称壁厚为7.93毫米（0.312英寸）。样本IDTS 8仅包含一个缺陷，在此称为基本缺陷。基础缺陷是具有均匀宽度（周向尺寸）的外部平底缺陷。其他四个样本包含由三个或更多基础缺陷的组合构成的相互作用缺陷组。所有的缺陷都是用火花腐蚀机加工的。为了确定每个管状样品及其相应缺陷组的实际尺寸，进行了测量。对拉伸试样和冲击试验试样进行测试以确定材料性能。将实验室测试中测得的破坏​​压力与通过五种评估方法预测的破坏压力进行比较，即ASME B31G方法，RSTRENG 085dL方法，DNV RP-F101单缺陷缺陷方法，RPA方法和RSTRENG有效面积方法。

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