Vol. 7 є 2, 2017 p 31-41


Article name, authors, abstract and keyword


Study of the construction of hydraulic stands for testing of tubular products

Dmitry A. Neganov a, Evgeny P. Studenov a, Sergey V. Skorodumov a, Vladislav A. Solovyev b

a Pipeline Transport Institute, LLC (Transneft R&D, LLC), 47a, Sevastopolskiy prospect, Moscow, 117186, Russian Federation

b Transneft Diascan, JSC, 7 Kuybysheva Str., Lukhovitsy, Moscow Region, 140501, Russian Federation


Abstract: The article summarizes the international and Russian experience in the development and operation of devices for full-scale testing of pipes and also discusses the requirements for a new design of the devices for hydraulic testing of pipes under combined loading with internal pressure and bending.
Also, the article summarizes typical schemes of pipe loading in the process of testing and variants of applying loads in time.
The analysis of the requirements for the test devices includes consideration of the main components of the hydraulic installation for cyclic pressure loading and the device for applying the bending moment as well as requirements for the placement of test devices equipment.
The results of the analysis demonstrate that the construction of a new test devices will allow testing the entire range of pipes in use with the purpose of assigning actual reliability values and safe service periods, introducing correction factors into design models (in case of non-compliance of estimated and actual values), determining maintenance and repair schedules.

Keywords: testing device, full-scale pipe sample, bending, internal pressure

[1] Mannucci G., Lucci A., Spinelli C., Baldi A., Mascia G. // Full Scale Bend Testing of Strain Based Designed High Grade Buried Gas Pipeline// Twenty-first International Offshore and Polar Engineering Conference Maui, Hawaii, USA, June 19Ц24, 2011.
[2] Spinelli C. M., Demofonti G., Fonzo A., Lucci A., Ferino J., Biagio M. Di, Flaxa V., Zimmermann S., Kalwa C., Knoop F.M. //Full Scale Investigation on Strain Capacity of High Grade Large Diameter Pipes// Steel pipes, 1, 2011.
[3] Through the Full-Scale-Test Laboratory Centro Sviluppo Materiali S.p.A. has opened a specialized window on the world of OCTG products development and characterization URL: http://www.c-s-m.it/en/competences/full_scale_testing.html (accessed: 10.12.2017).
[4] C-FER operates a variety of large-scale servo-hydraulic load frames to simulate complex loading scenarios representative of field conditions. URL: https://www.cfertech.com/testing-equipment/load-frames (accessed: 25.12.2016).
[5] JFE Steel Develops WorldТs First Large-Scale Bending Test Rig for Large-Diameter, High-Strength Linepipe. URL: http://www.jfe-steel.co.jp/en/release/2010/100825.html (accessed: 20.01.2017).
[6] New pipe bending testing machine at SZMF. URL: https://www.salzgitter-ag.com/en/zb-2014/q1/researchand- development.html (accessed: 10.02.2017).
[7] Special tests. Hydraulic tests; c2000-2017 [accessed 2017 February 20]. http://www.crism-prometey.ru/test-center/hydraulictests.aspx.
[8] Material science: a textbook for higher technical educational institutions. Arzamasov B.N., editor. 2-nd augmented edition. Moscow (Russian Federation): Mechanical Engineering; 1986.
[9] GOST 25.506-85. Methods of mechanical testing of materials. Determination of crack resistance (fracture toughness) under static loading.
[10] GOST 25.502-79. Calculations and tests for strength in mechanical engineering. Methods of mechanical testing of metals. Methods of fatigue testing.
[11] Varlamov N.V., et al. Full-scale testing of pipes and repair structures at OJSC VNIIST test site. Pipeline transport: theory and practice. 2010;6(22):1Ц7.
[12] Mechanical Testing Services. URL: http://testing.net (accessed: 15.02.2017).
[13] Susanne Höhler, Holger Brauer// Structural Behaviour of High-Frequency-Induction (HFI) Welded Line Pipe Subject to External Loads // Proceedings of the Twenty-third (2013) International Offshore and Polar Engineering/Anchorage, Alaska, USA, June 30ЦJuly 5, 2013.
[14] Mazur I. I., Ivantsov O. M. Safety of pipeline systems. Moscow (Russian Federation): Publishing Center ELIMA; 2004.
[15] Lisin Y. V. Research of physical and chemical properties of steel for continuously operated pipelines and assessment of safe operational life. Science and technology of oil and oil products pipeline transportation. 2015;4:18Ц28.