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Methodology for reparation of damaged sleeves and welded shield sections of guide vanes at hydropower plant DJERDAP 1

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Authors
Arsić, Miodrag
Vistać, Brane
Bošnjak, Srđan
Grabulov, Vencislav
Savić, Zoran
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Abstract
Vertical Kaplan turbines, manufactured in Russia and with nominal power of 200 MW, have been installed in 6 hydroelectric generating units at ’Djerdap 1’. During the refurbishment of hydropower plant experimental non-destructive tests were performed in order to determine the state of turbine components. During the course of testing damage was detected at sleeves and welded shields of guide vanes, which occurred as a consequence of turbine shaft vibrations. 1782 mm long guide vane sleeves were made of cast steel 25L (GOST standard), 260 mm long sleeve was made of forged steel St 25 (GOST standard), while welded shields of guide vanes were made of austenitic steel 08X18H10T (GOST standard). Results of experimental tests and methodology for reparation of damaged surfaces of sleeves and welded shields of guide vanes are presented in this paper. It was necessary, due to the structural solution used for the design of guide vanes and their function during service, to define a large number of ...details, carefully reconsider them and carry out all activities with extreme care in order to enable the safe operation and continuous use of vanes through the use of reparation methodology for welding/surface welding of sleeves and welded shields. Overlooking, underestimation or incorrect perception of important details could cause significant problems during turbine operation.

Keywords:
Sleeve / Reparation methodology / Hydro turbine / Damage / Crank
Source:
Advanced Materials Research, 2014, 1029, 8-13
Publisher:
  • Trans Tech Publications Ltd

DOI: 10.4028/www.scientific.net/AMR.1029.8

ISBN: 978-3038352402

ISSN: 1022-6680

Scopus: 2-s2.0-84912058806
[ Google Scholar ]
URI
http://rims.institutims.rs/handle/123456789/248
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
Institut za ispitivanje materijala
TY  - CONF
AU  - Arsić, Miodrag
AU  - Vistać, Brane
AU  - Bošnjak, Srđan
AU  - Grabulov, Vencislav
AU  - Savić, Zoran
PY  - 2014
UR  - http://rims.institutims.rs/handle/123456789/248
AB  - Vertical Kaplan turbines, manufactured in Russia and with nominal power of 200 MW, have been installed in 6 hydroelectric generating units at ’Djerdap 1’. During the refurbishment of hydropower plant experimental non-destructive tests were performed in order to determine the state of turbine components. During the course of testing damage was detected at sleeves and welded shields of guide vanes, which occurred as a consequence of turbine shaft vibrations. 1782 mm long guide vane sleeves were made of cast steel 25L (GOST standard), 260 mm long sleeve was made of forged steel St 25 (GOST standard), while welded shields of guide vanes were made of austenitic steel 08X18H10T (GOST standard). Results of experimental tests and methodology for reparation of damaged surfaces of sleeves and welded shields of guide vanes are presented in this paper. It was necessary, due to the structural solution used for the design of guide vanes and their function during service, to define a large number of details, carefully reconsider them and carry out all activities with extreme care in order to enable the safe operation and continuous use of vanes through the use of reparation methodology for welding/surface welding of sleeves and welded shields. Overlooking, underestimation or incorrect perception of important details could cause significant problems during turbine operation.
PB  - Trans Tech Publications Ltd
C3  - Advanced Materials Research
T1  - Methodology for reparation of damaged sleeves and welded shield sections of guide vanes at hydropower plant DJERDAP 1
EP  - 13
SP  - 8
VL  - 1029
DO  - 10.4028/www.scientific.net/AMR.1029.8
ER  - 
@conference{
author = "Arsić, Miodrag and Vistać, Brane and Bošnjak, Srđan and Grabulov, Vencislav and Savić, Zoran",
year = "2014",
abstract = "Vertical Kaplan turbines, manufactured in Russia and with nominal power of 200 MW, have been installed in 6 hydroelectric generating units at ’Djerdap 1’. During the refurbishment of hydropower plant experimental non-destructive tests were performed in order to determine the state of turbine components. During the course of testing damage was detected at sleeves and welded shields of guide vanes, which occurred as a consequence of turbine shaft vibrations. 1782 mm long guide vane sleeves were made of cast steel 25L (GOST standard), 260 mm long sleeve was made of forged steel St 25 (GOST standard), while welded shields of guide vanes were made of austenitic steel 08X18H10T (GOST standard). Results of experimental tests and methodology for reparation of damaged surfaces of sleeves and welded shields of guide vanes are presented in this paper. It was necessary, due to the structural solution used for the design of guide vanes and their function during service, to define a large number of details, carefully reconsider them and carry out all activities with extreme care in order to enable the safe operation and continuous use of vanes through the use of reparation methodology for welding/surface welding of sleeves and welded shields. Overlooking, underestimation or incorrect perception of important details could cause significant problems during turbine operation.",
publisher = "Trans Tech Publications Ltd",
journal = "Advanced Materials Research",
title = "Methodology for reparation of damaged sleeves and welded shield sections of guide vanes at hydropower plant DJERDAP 1",
pages = "13-8",
volume = "1029",
doi = "10.4028/www.scientific.net/AMR.1029.8"
}
Arsić, M., Vistać, B., Bošnjak, S., Grabulov, V.,& Savić, Z.. (2014). Methodology for reparation of damaged sleeves and welded shield sections of guide vanes at hydropower plant DJERDAP 1. in Advanced Materials Research
Trans Tech Publications Ltd., 1029, 8-13.
https://doi.org/10.4028/www.scientific.net/AMR.1029.8
Arsić M, Vistać B, Bošnjak S, Grabulov V, Savić Z. Methodology for reparation of damaged sleeves and welded shield sections of guide vanes at hydropower plant DJERDAP 1. in Advanced Materials Research. 2014;1029:8-13.
doi:10.4028/www.scientific.net/AMR.1029.8 .
Arsić, Miodrag, Vistać, Brane, Bošnjak, Srđan, Grabulov, Vencislav, Savić, Zoran, "Methodology for reparation of damaged sleeves and welded shield sections of guide vanes at hydropower plant DJERDAP 1" in Advanced Materials Research, 1029 (2014):8-13,
https://doi.org/10.4028/www.scientific.net/AMR.1029.8 . .

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