焊接压力管道“先漏后断”安全评定分析

邓彩艳; 张玉凤; 霍立兴; 王东坡; 罗翃

焊接压力管道“先漏后断”安全评定分析

1.
天津大学材料科学与工程学院, 天津 300072
2.
海洋石油工程股份有限公司, 天津塘沽 300452

基金项目: 国家自然科学基金资助项目(50375109)

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出版历程
- 收稿日期: 2008-01-09

Analysis on leak-before-break safety assessment of pressurized pipes

1.
School of Materials Science and Engineering, Tianjing Unirersity, Tianjin 300072, China
2.
Offshore Oil Engineering Co. LTD, Tianjin 300452, China

摘要

摘要: 根据英国标准BS7910和欧洲标准SINTAP将一种高级的压力容器和管道安全性分析方法——"先漏后断"(leak-before-break,LBB)评定应用到某公司开发的海底石油传输管道的分析中。给出了LBB评定方法中各个参量,如裂纹张开面积、流体泄漏量、穿透裂纹极限尺寸等的确定方法。LBB评定结果表明,穿透时的裂纹长度27.76 mm小于穿透裂纹的极限长度110.62 mm;监测系统能够检测到泄漏的时间小于穿透裂纹扩展到极限尺寸的时间0.62年。因此,该管线符合LBB分析的条件。将该方法用于实际管道的计算中,使承压构件的安全可靠性评定更具有合理性和科学性。
- 压力管道 /
- "先漏后断"分析 /
- 安全性评估
Abstract: According to British standard BS7910 and Europe standard SINTAP, a high-level safety analysis method of pressurized vessels and pipes, leak-before-break(LBB)analysis, is applied into the submarine pipeline in practice.In LBB analysis the determination of some parameters is given, which includes crack opening area, the leakage rate, and through-crack limit size and so on.The result shows that the flaw length at breakthrough, is less than the 110.62mm;limiting length of a through-wall flaw, 27.76mm, and the time to detect the leak is less than the 0.62year for the flaw to grow to a limiting length.So the pipeline meets the LBB condition. The application of LBB makes the safety assessment of pressurized component more scientific and more reasonable.
- pressured pipe /
- LBB analysis /
- safety assessment

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文章访问数: 232
HTML全文浏览量: 8
PDF下载量: 64
被引次数: 0

焊接压力管道“先漏后断”安全评定分析

计量

出版历程

Analysis on leak-before-break safety assessment of pressurized pipes

计量

出版历程

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