Print

2021 №03 (03) DOI of Article
10.37434/tpwj2021.03.04
2021 №03 (05)

The Paton Welding Journal 2021 #03
The Paton Welding Journal, 2021, #3, 22-26 pages

Peculiarities of emergency failure of a process pipeline

M.D. Rabkina, V.А. Kostin and T.G. Solomiichuk


E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua

Abstract
Analysis of failure of process pipeline, including a study of the properties, chemical composition and structure of the metal of welded joints, as well as the center of fracture and nature of crack propagation, made it possible to establish the most probable causes that led to its premature failure. It is assumed that such reasons are: a defect in a longitudinal weld; residual stresses in the pipe resulting from local heat treatment of the assembly circular weld; and probable longitudinal stresses arising from pipeline sagging between the supports. Ref. 9, 4 Tables, 7 Figures.
Keywords: technological pipeline; longitudinal and circumferential welded joints; defects in welded joints; lacksof- fusion; structural heterogeneity; lamellar tearing; destruction

Received 01.02.2021

References

1. Girgin Serkan, K. (2015) Elisabeth Lessons Learned from Oil Pipeline Natech Accidents and Recommendations for Natech Scenario Development – Final Report. ©EU. Abstract, Published.
2. Kushnareva, O.V., Golubaev, D.V. (2018) Analysis of accident causes on objects of main gas-and-oil pipelines: Problems and solutions. Master’s J., 1, 37–43.
3. Kuznetsova, N.V., Krasnokutsky, A.N. (2012) Experience of calculation and design of transfer pipelines. Tekhnologii Nefti i Gaza, 3, 54–59 [in Russian].
4. Lobanov, L.M., Poznyakov, V.D., Makhnenko, O.V. (2013) Formation of cold cracks in welded joints from high-strength steels with 350-850 MPa yield strength. The Paton Welding J., 7, 8–13.
5. Lobanov, L.M., Girenko, V.S., Rabkina, M.D. (2001) Anisotropy of crack resistance characteristics as one of the causes of crack initiation in welded bridge spans. In: Diagnostics, life and reconstruction of bridges and building structures, Transact., Lviv, Kamenyar, Issue 3, 138‒147 [in Russian].
6. Farber, V.M., Khotinov, V.A., Belikov, S.V. et al. (2016) Separations in steels subjected to controlled rolling, followed by accelerated cooling. Physics of Metals and Metallography, 117, 407-421. https://doi.org/10.1134/S0031918X16040050
7. Usov, V.V., Girenko, V.S., Rabkina, M.D. et al. (1993) Influence of crystallographic texture on anisotropy of fracture characteristics of low-alloyed steel of controlled rolling. In: Fizikokhimicheskaya Mekhanika Materialov, 2, 47-52 [in Russian]. https://doi.org/10.1007/BF00558813
8. TU 1381-003-47966425–2006: Steel longitudinal welded pipes with an outer diameter of 610‒1420 mm [in Russian].
9. Fellous, J. (1982) Fractography and atlas of fractograms. Moscow, Metallurgiya [in Russian].

Suggested Citation

M.D. Rabkina, V.А. Kostin and T.G. Solomiichuk (2021) Peculiarities of emergency failure of a process pipeline. The Paton Welding J., 03, 22-26.