LIFE ASSESSMENT OF HIGH PRESSURE STEAM PIPING BEND WORKING UNDER CONDITIONS OF CREEP DAMAGE

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F15%3A00301856" target="_blank" >RIV/68407700:21220/15:00301856 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
LIFE ASSESSMENT OF HIGH PRESSURE STEAM PIPING BEND WORKING UNDER CONDITIONS OF CREEP DAMAGE
Original language description
For many years, low alloy CrMo(V) creepresistant steels are applied for parts in the construction of energy and chemical structural units working under creep conditions (temperature about 550 degrees C and pressure about 15 MPa). These steels most often include creepresistant steel 13CrMo44 (CSN 15 121), 14MoV63 (CSN 15 128), 10CrMo910 (CSN 15 128). The main problem of steam pipelines made of these creepresistant steels is a residual lifetime, because these parts are at presence in most Czech power plants at the end of their designed lifetime (2,5 . 10(5) hours). This article deals with a lifetime assessment of one steam piping bend made of CSN steel 15 128 (14MoV63) which was operated in conditions of creep damage in Czech fossil fuel power plant until its creep deformation obtained a limit of 1 percent. The overall condition of the bend was assessed using replica and cross section metallography including electron microscopy and by evaluation of mechanical properties in asreceived state and after additional laboratory ageing at 600 degrees C for up to 5 000 hours in air conditions. As the final result, the residual lifetime by using mathematical approaches and standards was estimated.
Czech name
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Czech description
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Project
<a href="/en/project/LO1207" target="_blank" >LO1207: Support of Sustainability of the Innovation Centre of Diagnostics and Applications of Materials at CTU-FME in Prague</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
METAL 2015 - 24th International Conference on Metallurgy and Materials
ISBN
978-80-87294-62-8
ISSN
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e-ISSN
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Number of pages
7
Pages from-to
546-552
Publisher name
Tanger
Place of publication
Ostrava
Event location
Brno
Event date
Jun 3, 2015
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000374706100085

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