ASSESSMENT OF THE TECHNICAL CONDITION OF STRAIGHT SECTIONS OF ABOVEGROUND PROCESS PIPELINES
DOI:
https://doi.org/10.31471/1993-9868-2026-2(46)-108-119Keywords:
технологічний трубопровід, технічний стан, неруйнівний контроль, корозійне пошкодження, товщина стінки, напруження, тріщиностійкістьAbstract
A comprehensive set of approaches to assessing the technical condition of straight sections of aboveground process pipelines has been proposed, taking into account their operating conditions, the nature of applied loads, and the presence of defects in the pipe wall. These approaches address pipeline sections with corrosion damage to the pipe wall, defects in welded joints, and cracks in the pipe material and welds. Particular attention is paid to assessing pipeline strength under cyclic loading caused by changes in operating pressure during normal operation, shutdowns, and start-ups of process equipment. The types and required scope of initial data to be collected before assessing the technical condition of straight sections of aboveground process pipelines have been determined. Approaches to planning pipeline technical inspections have been analyzed, and their advantages, disadvantages, and limitations in practical application have been identified. The feasibility of different inspection strategies has been examined in terms of technical effectiveness and economic justification. The main operations to be included in the technical inspection program for aboveground process pipelines have been identified. It has been demonstrated that the results of actual pipe wall thickness measurements provide the basis for strength verification and for determining whether pipelines can continue to operate safely. The conditions for ensuring pipeline strength in the presence of localized pipe wall defects have been examined. Approaches to assessing the acceptability of their geometric dimensions and determining the need for additional non-destructive testing have been identified. The specific features of ultrasonic testing of welded joints in aboveground process pipelines have been examined, and the locations where such testing is required have been identified. The conditions under which straight pipeline sections exhibit the lowest strength safety margin have been established. The influence of cyclic variations in internal pressure on the stress state of pipelines has been analyzed, and the sections most susceptible to cyclic loading have been identified. Where crack-like defects are detected in welded joints, it is proposed to assess their severity by calculating the stress intensity factor.
Downloads
References
1. Savula, S. F., Banakhevych, Yu. V., & Kychma, A. O. (2002). Tekhnichna dihahnostyka mahistralnykh hazoprovodiv UMH “Lvivtranshaz” [Technical diagnostics of main gas pipelines of UMG "Lvivtransgaz"]. In Suchasni prylady, materialy i tekhnolohii dlia neruinivnoho kontroliu i tekhnichnoi diahnostyky promyslovoho obladnannia [Modern Devices, Materials and Technologies for Nondestructive Testing and Technical Diagnostics of Industrial Equipment: Proceedings of the 3rd Scientific and Technical Conference] (pp. 40–42). IFNTUNG. (in Ukrainian)
2. Kaptsov, I. I., Burnykh, V. S., Kholodov, V. I., & Honchar, V. P. (2002). Metodyka otsinky tekhnichnoho stanu i zalyshkovoho resursu trub hazoprovodiv z tryvalym strokom ekspluatatsii [Methodology for assessing the technical condition and residual life of gas pipeline pipes with long service life]. In Suchasni prylady, materialy i tekhnolohii dlia neruinivnoho kontroliu i tekhnichnoi diahnostyky promyslovoho obladnannia [Modern Devices, Materials and Technologies for Nondestructive Testing and Technical Diagnostics of Industrial Equipment: Proceedings of the 3rd Scientific and Technical Conference] (p. 58). IFNTUNG. (in Ukrainian)
3. Kiefner, J. F., & Vieth, P. H. (1989). A modified criterion for evaluating the remaining strength of corroded pipe (Final Report, Project PR 3-805). American Gas Association.
4. American Society of Mechanical Engineers. (2023). Manual for determining the remaining strength of corroded pipelines (ASME B31G-2023). ASME.
5. Cosham, A., Hopkins, P., & Macdonald, K. A. (2007). Best practice for the assessment of defects in pipelines – Corrosion. Engineering Failure Analysis, 14(7), 1245–1265. https://doi.org/10.1016/j.engfailanal.2006.11.035
6. Macdonald, K., & Cosham, A. (2005). Best practice for the assessment of defects in pipelines – Gouges and dents. Engineering Failure Analysis, 12(5), 720–745. https://doi.org/10.1016/j.engfailanal.2004.12.011
7. Li, H., & et al. (2022). Residual strength assessment and residual life prediction of corroded pipelines: A decade review. Energies, 15(3), Article 726. https://doi.org/10.3390/en15030726
8. Zhu, X.-K. (2023). Recent advances in corrosion assessment models for buried transmission pipelines. CivilEng, 4(2), 391–415. https://doi.org/10.3390/civileng4020023
9. Qin, G., & et al. (2023). Pipeline condition assessment and finite element modeling of mechano-electrochemical interaction between corrosion defects with varied orientations on pipelines. Tunnelling and Underground Space Technology, 136, Article 105101. https://doi.org/10.1016/j.tust.2023.105101
10. Olawole, O. O., & et al. (2026). Advanced sensor systems and machine learning for pipeline integrity management: A review of corrosion monitoring and prediction strategies. npj Materials Degradation, 10, Article 48. https://doi.org/10.1038/s41529-026-00761-4
11. Ukrtranshaz. (2003). Metodyka vyznachennia tekhnichnoho stanu hazopromyslovoho obladnannia UKPH, POZ, HRS dlia prodovzhennia terminiv bezpechnoi ekspluatatsii, u tomu chysli i vid amortyzovanoho obladnannia [Methodology for determining the technical condition of gas processing equipment of UKPG, POZ, GRS for extending the terms of safe operation, including amortized equip-ment] (STP 320.00.158764.041-2003). Ukrtranshaz. (in Ukrainian)
12. Ministry of Energy of Ukraine. (2023). Ustatkuvannia dlia naftovoi ta hazovoi promyslovosti. Truboprovody Stalevi tekhnolohichni. Kontrol tekhnichnoho stanu [Equipment for the oil and gas
industry. Process steel pipelines. Control of technical condition] (SOU 09.1‒30019775‒379:2023). Minenerho Ukrainy. (in Ukrainian)
13. Doroshenko, Ya. V. (2009). Sporudzhennia mahistralnykh truboprovodiv [Construction of trunk pipelines] (Textbook). IFNTUNG. (in Ukrainian)
14. State Standard of Ukraine. (2000). Posudyny ta aparaty. Vybir parametriv zmitsniuvalnoho obroblennia [Vessels and apparatus. Selection of parameters for strengthening treatment] (DSTU 4003-2000). Derzhstandart Ukrainy. (in Ukrainian)
15. State Committee of Ukraine for Supervision of Industrial Safety and Occupational Health. (1993). Provedennia robit shchodo otsiniuvannia zalyshkovoi robotozdatnosti tekhnolohichnoho ustatkuvannia naftopererobnykh, naftokhimichnykh ta khimichnykh vyrobnytsvt [Carrying out work on assessing the residual performance capability of process equipment of oil refining, petrochemical and chemical
industries] (NPAOP 0.00-7.02-93). Derzhnhirpromnahliad Ukrainy. (in Ukrainian)
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2026 Oil and Gas Power Engineering
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
.png)
1.png){kind=logo}
