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Feasibility Analysis for Repair of Large Diameter Hydro Turbine Shaft Based on Weldability Test and Welding Cycle Simulation

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Authors
Momčilović, Dejan
Odanović, Zoran
Article (Published version)
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Abstract
Turbine and generator rotors and shafts undergo high stresses during regular working life and, from a safety and operational aspect, are the most significant components of a power generation system. Depending on the appropriate operating conditions, like temperature and/or corrosion the, shafts can be fabricated out of low/high alloy heat resistance material or of low alloyed, highly toughened material for different application. Despite known good practice and developed operation procedures, the failures of shafts sometimes occur. The right and well-defined failure analysis is the basis for feasibility analysis of repair method in the power generating industry. The analysis of direct and indirect costs of repair after the failure analysis as well as the analysis of the repair and post-repair conditions of the repaired element is the vital for decision on the key question. Is it possible to repair this element and what is the optimal repair strategy? This paper compares and an...alyses two approaches, by weldability analysis and weld cycle simulation, in order to determine welding feasibility analysis of cracked hydro turbine shafts.

Keywords:
fatigue / failure / turbine shaft / weldability / weld cycle simulation / repair / feasibility study
Source:
Advanced Materials Research, 2019, 1153, 36-45
Funding / projects:
  • Development of Methodology for Improvement of Operational Performance, Reliability and Energy Efficiency of Machine Systems used in the Resource Industry (RS-35029)
  • Pressure equipment integrity under simultaneous effect of fatigue loading and temperature (RS-35011)

DOI: 10.4028/www.scientific.net/AMR.1153.36

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URI
http://rims.institutims.rs/handle/123456789/453
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
Institut za ispitivanje materijala
TY  - JOUR
AU  - Momčilović, Dejan
AU  - Odanović, Zoran
PY  - 2019
UR  - http://rims.institutims.rs/handle/123456789/453
AB  - Turbine and generator rotors and shafts undergo high stresses during regular working life
and, from a safety and operational aspect, are the most significant components of a power
generation system. Depending on the appropriate operating conditions, like temperature and/or
corrosion the, shafts can be fabricated out of low/high alloy heat resistance material or of low
alloyed, highly toughened material for different application. Despite known good practice and
developed operation procedures, the failures of shafts sometimes occur. The right and well-defined
failure analysis is the basis for feasibility analysis of repair method in the power generating industry.
The analysis of direct and indirect costs of repair after the failure analysis as well as the analysis of
the repair and post-repair conditions of the repaired element is the vital for decision on the key
question. Is it possible to repair this element and what is the optimal repair strategy?
This paper compares and analyses two approaches, by weldability analysis and weld cycle
simulation, in order to determine welding feasibility analysis of cracked hydro turbine shafts.
T2  - Advanced Materials Research
T1  - Feasibility Analysis for Repair of Large Diameter Hydro Turbine Shaft Based on Weldability Test and Welding Cycle Simulation
EP  - 45
SP  - 36
VL  - 1153
DO  - 10.4028/www.scientific.net/AMR.1153.36
ER  - 
@article{
author = "Momčilović, Dejan and Odanović, Zoran",
year = "2019",
abstract = "Turbine and generator rotors and shafts undergo high stresses during regular working life
and, from a safety and operational aspect, are the most significant components of a power
generation system. Depending on the appropriate operating conditions, like temperature and/or
corrosion the, shafts can be fabricated out of low/high alloy heat resistance material or of low
alloyed, highly toughened material for different application. Despite known good practice and
developed operation procedures, the failures of shafts sometimes occur. The right and well-defined
failure analysis is the basis for feasibility analysis of repair method in the power generating industry.
The analysis of direct and indirect costs of repair after the failure analysis as well as the analysis of
the repair and post-repair conditions of the repaired element is the vital for decision on the key
question. Is it possible to repair this element and what is the optimal repair strategy?
This paper compares and analyses two approaches, by weldability analysis and weld cycle
simulation, in order to determine welding feasibility analysis of cracked hydro turbine shafts.",
journal = "Advanced Materials Research",
title = "Feasibility Analysis for Repair of Large Diameter Hydro Turbine Shaft Based on Weldability Test and Welding Cycle Simulation",
pages = "45-36",
volume = "1153",
doi = "10.4028/www.scientific.net/AMR.1153.36"
}
Momčilović, D.,& Odanović, Z.. (2019). Feasibility Analysis for Repair of Large Diameter Hydro Turbine Shaft Based on Weldability Test and Welding Cycle Simulation. in Advanced Materials Research, 1153, 36-45.
https://doi.org/10.4028/www.scientific.net/AMR.1153.36
Momčilović D, Odanović Z. Feasibility Analysis for Repair of Large Diameter Hydro Turbine Shaft Based on Weldability Test and Welding Cycle Simulation. in Advanced Materials Research. 2019;1153:36-45.
doi:10.4028/www.scientific.net/AMR.1153.36 .
Momčilović, Dejan, Odanović, Zoran, "Feasibility Analysis for Repair of Large Diameter Hydro Turbine Shaft Based on Weldability Test and Welding Cycle Simulation" in Advanced Materials Research, 1153 (2019):36-45,
https://doi.org/10.4028/www.scientific.net/AMR.1153.36 . .

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