Sulfide stress corrosion cracking in L360QS pipelines: A comprehensive failure analysis and implications for natural gas transportation safety

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL International Journal of Pressure Vessels and Piping Pub Date : 2024-09-18 DOI:10.1016/j.ijpvp.2024.105324

Xuanpeng Li , Wei Lv , Mingxing Li , Kun Zhang , Zhengyi Xu , Juntao Yuan , Tianle Liu , Sui Wang , Anqing Fu , Yaorong Feng

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Abstract

This research investigates the severe weld failures in L360QS pipelines, which are integral to the infrastructure of high-pressure natural gas transportation systems. Even with strict compliance to engineering standards, two pivotal welds experienced sulfide stress corrosion cracking (SSCC) due to continuous exposure to hydrogen sulfide and stresses from construction activities. A comprehensive material analysis and stress simulation has been utilized, revealing a maximum stress concentration of 544.9 MPa that surpasses the yield strength of the pipeline material. This discovery prompts a reevaluation of current safety margins and underscores the urgent need for enhanced pipeline integrity management. Our findings, corroborated by stress distribution simulations, not only illuminate the complex interplay of material properties and environmental factors in SSCC but also provide a new perspective for the safe service of pipeline.

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L360QS 管道中的硫化物应力腐蚀开裂：全面故障分析及对天然气运输安全的影响

本研究调查了 L360QS 管道的严重焊缝故障，该管道是高压天然气运输系统中不可或缺的基础设施。即使严格遵守工程标准，由于持续暴露于硫化氢和施工活动产生的应力，两个关键焊缝还是出现了硫化物应力腐蚀开裂（SSCC）。通过全面的材料分析和应力模拟，发现最大应力集中在 544.9 兆帕，超过了管道材料的屈服强度。这一发现促使我们重新评估当前的安全系数，并强调了加强管道完整性管理的迫切需要。我们的研究结果得到了应力分布模拟的证实，不仅揭示了 SSCC 中材料特性和环境因素之间复杂的相互作用，还为管道的安全服务提供了新的视角。

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来源期刊

International Journal of Pressure Vessels and Piping 工程技术-工程：机械

CiteScore

5.30

自引率

13.30%

发文量

208

审稿时长

17 months

期刊介绍： Pressure vessel engineering technology is of importance in many branches of industry. This journal publishes the latest research results and related information on all its associated aspects, with particular emphasis on the structural integrity assessment, maintenance and life extension of pressurised process engineering plants. The anticipated coverage of the International Journal of Pressure Vessels and Piping ranges from simple mass-produced pressure vessels to large custom-built vessels and tanks. Pressure vessels technology is a developing field, and contributions on the following topics will therefore be welcome: • Pressure vessel engineering • Structural integrity assessment • Design methods • Codes and standards • Fabrication and welding • Materials properties requirements • Inspection and quality management • Maintenance and life extension • Ageing and environmental effects • Life management Of particular importance are papers covering aspects of significant practical application which could lead to major improvements in economy, reliability and useful life. While most accepted papers represent the results of original applied research, critical reviews of topical interest by world-leading experts will also appear from time to time. International Journal of Pressure Vessels and Piping is indispensable reading for engineering professionals involved in the energy, petrochemicals, process plant, transport, aerospace and related industries; for manufacturers of pressure vessels and ancillary equipment; and for academics pursuing research in these areas.