Failure analysis of a thermally insulated pipeline in a district heating system
Source abstract
Abstract
Abstract Failure analysis of a thermally insulated pipeline which failed during operation in a district heating system was performed by utilizing optical and electron microscopy in addition to various mechanical tests. The fractographic investigation showed that a crack initiated at the inside of the pipe and propagated to the outside. The crack was initiated at the toe region of the weldment and propagated along the transverse direction of the weldment. In the mechanical tests, the low toughness and hydrogen sensitivity of the weldment affected the failure of the thermally-insulated pipeline. In short, the interaction of the multiple effects in the HAZ, including the lower mechanical properties, stress concentration, and hydrogen susceptibility, led to pipe failure.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Hydrogen embrittlement and corrosion behaviors in metals · Structural Integrity and Reliability Analysis · Material Properties and Failure Mechanisms
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (35)
Show source-provided references
1. Mathematical modeling and control of thermal plant in the district heating system of Korea10.1016/j.applthermaleng.2010.05.014 ↗
2. A multicriteria approach to evaluate district heating system10.1016/j.apenergy.2009.06.021 ↗
3. Harvey · 2006
4. A comparative study of hydrogen induced cracking behavior in API 5L X60 and X70 pipeline steels10.1016/j.engfailanal.2013.04.028 ↗
5. A focus on different factors affecting hydrogen induced cracking in oil and natural gas pipeline steel10.1016/j.engfailanal.2017.05.022 ↗
6. An extensive study of hydrogen-induced cracking susceptibility in an API X60 sour service pipeline steel10.1016/j.ijhydene.2016.01.031 ↗
7. Effect of microstructural parameters on fatigue crack propagation in an API X65 pipeline steel10.1007/s11665-016-2335-6 ↗
8. Evolution of the microstructure and texture of X70 pipeline steel during cold-rolling and annealing treatment10.1016/j.matdes.2015.11.015 ↗
9. Failure analysis of a carbon steel pipeline exposed to wet hydrogen sulfide environment10.1016/j.engfailanal.2016.11.001 ↗
10. Failure analysis of leakage caused by perforation in an L415 steel gas pipeline10.1016/j.csefa.2017.07.003 ↗
11. Failure assessment and safe life prediction of corroded oil and gas pipelines10.1016/j.petrol.2016.12.029 ↗
12. Investigation of fatigue crack propagation in spot-welded joints based on fracture mechanics approach10.1007/s11665-012-0220-5 ↗
13. The mechanism of failure by hydrogen induced cracking in an acidic environment for API 5L X70 pipeline steel10.1016/j.ijhydene.2014.11.057 ↗
14. Synergistic action of hydrogen and stress concentration on the fatigue properties of X80 pipeline steel10.1016/j.msea.2017.06.029 ↗
15. Effect of hydrostatic pressure on the corrosion behaviors of two low alloy steels
16. Failure analysis of a cracked diesel engine clutch spring plate10.1016/j.matchar.2006.11.003 ↗
17. Measurement of residual stress in quenched 1045 steel by the nanoindentation method10.1016/j.matchar.2010.09.006 ↗
18. Bourgeon · 2010 · 13
19. Hydrogen influence on fracture toughness of the weld metal in super duplex stainless steel (UNS S32750) welded with two different heat input10.1016/j.ijhydene.2015.07.150 ↗
20. Fractography
21. Welding metallurgy
22. Understanding the role of inclusions and microstructures in ductile fracture
23. Cleavage initiation in the intercritically reheated coarse-grained heat-affected zone: part I. Fractographic evidence10.1007/BF02651598 ↗
24. Effects of Nb on microstructure and continuous cooling transformation of coarse grain heat-affected zone in 610MPa class high-strength low-alloy structural steels10.1016/j.msea.2007.10.118 ↗
25. The deformation and aging of mild steel: III discussion of results10.1088/0370-1301/64/9/303 ↗
26. The cleavage strength of polycrystals
27. Characterization of coarse bainite transformation in low carbon steel during simulated welding thermal cycles10.1016/j.matchar.2015.05.010 ↗
28. Characterization of as-welded microstructure of heat-affected zone in modified 9Cr-1Mo-V-Nb steel weldment10.1016/j.matchar.2016.05.024 ↗
29. Heat-affected zone liquation crack on resistance spot welded TWIP steels10.1016/j.matchar.2014.03.016 ↗
30. Microstructure and fracture mechanism of a flash butt welded 380CL steel10.1016/j.engfailanal.2016.02.005 ↗
31. Hydrogen induced stress cracking in supermartensitic stainless steel-Stress threshold for coarse grained HAZ10.1016/j.engfailanal.2013.04.003 ↗
32. Leslie · 1982 · 79
33. Steel · 1992 · 97
34. Fracture toughness of cold worked and simulated heat affected structural steel10.1016/S0013-7944(97)00100-8 ↗
35. Effect of artificial aging on the microstructure of weldment on API 5L X-52 steel pipe10.1016/j.matchar.2006.11.004 ↗