Practical Experience with the Methodology of Prediction of Corrosion-Fatigue Failures of Steam Turbine Rotating Blades

Corrosion fatigue fractures initiating from corrosion pits are one of the most serious problem during service of rotating blades of the low-pressure parts of steam turbines. A methodology for fatigue failure prediction, originally based on the knowledge obtained by EPRI (Electric Power Research Inst...

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Autores principales:	Kasl Josef, Lazar Jan, Matějová Miroslava
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/8f0710e9109d42a295f011440129b592
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id	oai:doaj.org-article:8f0710e9109d42a295f011440129b592
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spelling	oai:doaj.org-article:8f0710e9109d42a295f011440129b5922021-12-02T17:13:47ZPractical Experience with the Methodology of Prediction of Corrosion-Fatigue Failures of Steam Turbine Rotating Blades2261-236X10.1051/matecconf/202134904015https://doaj.org/article/8f0710e9109d42a295f011440129b5922021-01-01T00:00:00Zhttps://www.matec-conferences.org/articles/matecconf/pdf/2021/18/matecconf_iceaf2021_04015.pdfhttps://doaj.org/toc/2261-236XCorrosion fatigue fractures initiating from corrosion pits are one of the most serious problem during service of rotating blades of the low-pressure parts of steam turbines. A methodology for fatigue failure prediction, originally based on the knowledge obtained by EPRI (Electric Power Research Institute), using corrosion pits parameters assessment and local stresses calculation was adapted to the conditions of ČEZ a.s. power stations. This contribution deals with the evaluation of the corrosion state of blades of three low pressure rotors after long service. Measurement was done in power stations equipped with turbines of power 200 MW and 110 MW respectively. Possibilities and uncertainties (influence of filling of pits with oxides, cyclic stress calculations, and the selection of the geometric factor Y) and their elimination are discussed.Kasl JosefLazar JanMatějová MiroslavaEDP SciencesarticleEngineering (General). Civil engineering (General)TA1-2040ENFRMATEC Web of Conferences, Vol 349, p 04015 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Engineering (General). Civil engineering (General) TA1-2040 Kasl Josef Lazar Jan Matějová Miroslava Practical Experience with the Methodology of Prediction of Corrosion-Fatigue Failures of Steam Turbine Rotating Blades
description	Corrosion fatigue fractures initiating from corrosion pits are one of the most serious problem during service of rotating blades of the low-pressure parts of steam turbines. A methodology for fatigue failure prediction, originally based on the knowledge obtained by EPRI (Electric Power Research Institute), using corrosion pits parameters assessment and local stresses calculation was adapted to the conditions of ČEZ a.s. power stations. This contribution deals with the evaluation of the corrosion state of blades of three low pressure rotors after long service. Measurement was done in power stations equipped with turbines of power 200 MW and 110 MW respectively. Possibilities and uncertainties (influence of filling of pits with oxides, cyclic stress calculations, and the selection of the geometric factor Y) and their elimination are discussed.
format	article
author	Kasl Josef Lazar Jan Matějová Miroslava
author_facet	Kasl Josef Lazar Jan Matějová Miroslava
author_sort	Kasl Josef
title	Practical Experience with the Methodology of Prediction of Corrosion-Fatigue Failures of Steam Turbine Rotating Blades
title_short	Practical Experience with the Methodology of Prediction of Corrosion-Fatigue Failures of Steam Turbine Rotating Blades
title_full	Practical Experience with the Methodology of Prediction of Corrosion-Fatigue Failures of Steam Turbine Rotating Blades
title_fullStr	Practical Experience with the Methodology of Prediction of Corrosion-Fatigue Failures of Steam Turbine Rotating Blades
title_full_unstemmed	Practical Experience with the Methodology of Prediction of Corrosion-Fatigue Failures of Steam Turbine Rotating Blades
title_sort	practical experience with the methodology of prediction of corrosion-fatigue failures of steam turbine rotating blades
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/8f0710e9109d42a295f011440129b592
work_keys_str_mv	AT kasljosef practicalexperiencewiththemethodologyofpredictionofcorrosionfatiguefailuresofsteamturbinerotatingblades AT lazarjan practicalexperiencewiththemethodologyofpredictionofcorrosionfatiguefailuresofsteamturbinerotatingblades AT matejovamiroslava practicalexperiencewiththemethodologyofpredictionofcorrosionfatiguefailuresofsteamturbinerotatingblades
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Practical Experience with the Methodology of Prediction of Corrosion-Fatigue Failures of Steam Turbine Rotating Blades

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