Some advanced welding technologies applied for repair welding in power plants


  • Zoran Dušan Odanović IMS Institute, Bulevar vojvode Mišića 43, 11000 Belgrade, Serbia



steel welding; power plants maintenance; emergency repair welding; Ni based filler material; repair welding on site


Steels are subjected to many time-dependent degradation mechanisms when they are applied in electric power plants. They are exposed to high temperatures, multi-axial stresses, creep, fatigue, corrosion, and abrasion during such services. Used under these threatening conditions, those materials could develop various damages or failures or even form cracks. Therefore, it is desirable to prevent in-service failures, improve reliability, and extend the plant's operational life. The efficiency of the electric power plant, among other processes, depends on effective maintenance. The paper presents the evaluation of advanced procedures and knowledge in the field of steel repair welding in the maintenance of the power plants. Most repair welding of low alloy steels requires high-temperature post-weld heat treatment (PWHT), but in certain repairs, however, this is not always possible. Application of the nickel-based filler metal could also be an alternative to performing post-weld heat treatment (PWHT). The repair work expenses could be reduced if the repair is performed on-site. The novel developed repair welding procedures presented in this paper were applied for emergency weld repairing of the steel pipelines in thermal power plant, repairing without disassembling the working wheel of the coal mill in thermal power plant and "on-site" repairing turbine shaft of the hydropower plant. For all the presented repair welding procedures, weldability analysis based on the analytical equations and technological ''CTS'' and ''Y'' tests to determine the sensitivity to cold and hot crack forming were applied. Tensile tests, absorbed energies tests, banding tests, and hardness measurements were performed on trial joints, which were used to develop and verify the applied methodologies. Presented advanced weld repair technologies enable repairs for a shorter time and at lower costs compared to conventional procedures.


T. Lant, D.L. Robinson: Int Journal of Pressure and Piping, 78 (2001) 813-818


B. Messer, C. Patrick, S. Seitz: Int Journal of Pressure and Piping, 53 (2006) 365-372.


J. MacIntyre, D. Stansfield, P. Allot, M. Harris: Power Station Maintenance - Profitability Through Reliability, First IEE/IMechE International Conference (Conf. Publ. No. 452) ISBN: 0-85296-699-7, (1998) 84-89.


A. Klenk, S. Issler, I. A. Shibli, J. A. Williams: Weld Repair for Creep Applications, OMMI, 2 (2003) 1-32. Link

E. Budzakova, D. Dune, M. Law: Materials Forum, 27 (2004) 45-53. Link

V. Silva, C. de Albuquerque: Journal of Materials Engineering and Performance, 18 (3) (2009) 324-331.


T. Lant, D.L. Robinson, B. Spafford: Int Journal of Press Vess and Piping, 78 (2001) 813-818.


D. Gandy: The Grades 11 and 12 Low Alloy Steel Handbook, Electric Power Research Institute, Palo Alto, California USA, (2007), 7.6-7.19.

Z. Odanović, M. Arsić, V. Grabulov, M. Djurdjević: Advanced Materials Research, 814 (2013) 25- 34


Z. Odanović, M. Djurdjević, M. Arsić, V. Grabulov, B. Katavić, B. Gligorijević: 2nd IIW European-South American School of Welding and Correlated Processes, Sattledt, Austria, (2012) Document SG-RES-0193-12.

B. Katavić, B. Jegdić, Z. Odanović, N. Hut: Welding and welded structures, 54 (2009)149-155.


B. Katavić, B. Jegdić, Z. Odanović, N. Hut: Welding and welded structures, 55 (2010) 91-96.

Y. Ito and K. Bessyo: IIW-Doc IX-631-69 (1969) 1-18.


N. Yurioka et. al.: Australian Weld Res Ass Melbourne Paper, 10 (1981) 1-18.

I. Hrivnjak: Theory of Weldability of Metals and Alloys, Elsevier Science Publishers, ISBN 0-444-98707-X, Amsterdam (1991) 75-92.

D. Uwerand, H. Höhne: IIW-Doc. IX-1630-91 (1991) 1-15.

N. Yurioka et. al.: Australian Weld. Res. Ass. Melbourne, Paper 10 (1981) 1-18.

EN ISO 17642-2: Destructive test on welds in metallic materials - Cold cracking test for weldments (CTS) (2005).

K. Wilken: Le Soudage dans le Monde, 28 (1990) 127-143.

V. Grabulov, Z. Odanović, B. Katavić, S. Momčilović,B. Tasić: Welding and welded structures 53 (2008) 147-157. Link

Z. Odanović, V. Grabulov, S. Momčilović, B. Tasić, M. Đurđević, M. Arsić: Welding in the World, 52 (2008) 347-353.

Z. Odanović, V. Grabulov, M. Arsić, R. Miković, R. Mitrović: International Congress on Advances in Welding Science and Technology for Construction, Energy and Transportation Systems (AWST - 2011) (ISBN 978-605-4424-23-8), (2011) 243-248.

Z.Odanovic et al: Welding and welded structures, 56 (2011) 149-166. Link

Z. Odanović, V. Grabulov, M. Arsić, M. Đurđević, B. Katavić: Proceedings of the IIW International Conference on Global Trends in Joining, Cutting and Surfacing Technology - IIW 2011, (ISBN 978-81-8487-152-4), (2011) 343-350.

D. Momčilović, Z. Odanović: Advanced Materials Research, 1153 (2019) 36-45.





How to Cite

Odanović, Zoran Dušan. 2021. “Some Advanced Welding Technologies Applied for Repair Welding in Power Plants”. Metallurgical and Materials Engineering 27 (4):473-87.



Steelmaking and processing - devoted to Prof. Ljubomir Nedeljković