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Selected Journal of the Excellence Action Plan for China's Science and Technology Journals (Phase II),Selected Journal of Chinese Applied Core Journals (Extended Edition) / CACJ (Extended),Indexed in the Chinese Core Journals (Selection) Database
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Urban Gas – Current Issue: No.
618
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天然气门站一起Q235B输气管线焊接事故分析
Issue Number
Issue 06, 2012
[View other articles in this issue]
DOI
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Revision Time
Publish Date
Publication Date
2012.06.15
Manuscript ID
Author
刘 伟
Organization
章丘市天然气有限责任公司
Abstract
本文介绍了天然气门站一起Q235B输气管线延迟裂纹事故。分析了裂纹漏检和产生原因,强调
慎用高强度级别、纤维素型下向焊进口焊条和焊完24小时后探伤检查的必要性。本文还指出:
这次事故是在试验压力略高于设计压力1.5倍时发生的,当试验压力较小时,可能不会出现类似
事故,但并不等于不存在延迟裂纹这一隐患,它有可能在使用中扩展,导致泄漏,希望已经投
用的类似管线加强在役检验。
Keywords
Q235B 输气管线 焊接 延迟裂纹
References
Declaration:
The English version of this article is translated with the assistance of AI.
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