Thermal history and stress state of a fresh steam-pipeline influencing its remaining service life
2011
Аутори
Bakić, GordanaŠijački-Žeravčić, Vera
Đukić, Miloš
Maksimović, Stevan M.
Plešinac, Dušan
Rajičić, Bratislav
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The service life of thick-walled power plant components exposed to creep, as is the case with pipelines of fresh- and reheated steam, depend on the exhaustion rate of the material. Plant operation at elevated temperatures and at temperatures below designed temperatures all relates to the material exhaustion rate, thus complicating remaining life assessment, whereas the operating temperature variation is a most common cause in the mismatching of real service and design life. Apart from temperature, the tube wall stress is a significant variable for remaining life assessment, whose calculation depends on the selected procedure, due to the complex pipeline configuration. In this paper, a remaining life assessment is performed according to the Larson-Miller parametric relation for a Æ324×36 pipe bend element of a fresh steam-pipeline, made of steel class 1Cr0.3Mo0.25V, after 160.000 hours of operation. The temperature history of the pipeline, altogether with the pipe bend, is determined ba...sed on continuous temperature monitoring records. Compared results of remaining life assessment are displayed for monitored temperature records and for designed operating temperature in the same time period. The stress calculation in the pipe bend wall is performed by three methods that are usually applied so to emphasize the differences in the obtained results of remaining life assessment.
Кључне речи:
thermal power plant / remaining life assessment / pipeline / creepИзвор:
Thermal Science, 2011, 15, 3, 691-704Издавач:
- Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
DOI: 10.2298/TSCI110509050B
ISSN: 0354-9836
WoS: 000296676400010
Scopus: 2-s2.0-84858779597
Институција/група
Inovacioni centarTY - JOUR AU - Bakić, Gordana AU - Šijački-Žeravčić, Vera AU - Đukić, Miloš AU - Maksimović, Stevan M. AU - Plešinac, Dušan AU - Rajičić, Bratislav PY - 2011 UR - https://machinery.mas.bg.ac.rs/handle/123456789/1152 AB - The service life of thick-walled power plant components exposed to creep, as is the case with pipelines of fresh- and reheated steam, depend on the exhaustion rate of the material. Plant operation at elevated temperatures and at temperatures below designed temperatures all relates to the material exhaustion rate, thus complicating remaining life assessment, whereas the operating temperature variation is a most common cause in the mismatching of real service and design life. Apart from temperature, the tube wall stress is a significant variable for remaining life assessment, whose calculation depends on the selected procedure, due to the complex pipeline configuration. In this paper, a remaining life assessment is performed according to the Larson-Miller parametric relation for a Æ324×36 pipe bend element of a fresh steam-pipeline, made of steel class 1Cr0.3Mo0.25V, after 160.000 hours of operation. The temperature history of the pipeline, altogether with the pipe bend, is determined based on continuous temperature monitoring records. Compared results of remaining life assessment are displayed for monitored temperature records and for designed operating temperature in the same time period. The stress calculation in the pipe bend wall is performed by three methods that are usually applied so to emphasize the differences in the obtained results of remaining life assessment. PB - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd T2 - Thermal Science T1 - Thermal history and stress state of a fresh steam-pipeline influencing its remaining service life EP - 704 IS - 3 SP - 691 VL - 15 DO - 10.2298/TSCI110509050B ER -
@article{ author = "Bakić, Gordana and Šijački-Žeravčić, Vera and Đukić, Miloš and Maksimović, Stevan M. and Plešinac, Dušan and Rajičić, Bratislav", year = "2011", abstract = "The service life of thick-walled power plant components exposed to creep, as is the case with pipelines of fresh- and reheated steam, depend on the exhaustion rate of the material. Plant operation at elevated temperatures and at temperatures below designed temperatures all relates to the material exhaustion rate, thus complicating remaining life assessment, whereas the operating temperature variation is a most common cause in the mismatching of real service and design life. Apart from temperature, the tube wall stress is a significant variable for remaining life assessment, whose calculation depends on the selected procedure, due to the complex pipeline configuration. In this paper, a remaining life assessment is performed according to the Larson-Miller parametric relation for a Æ324×36 pipe bend element of a fresh steam-pipeline, made of steel class 1Cr0.3Mo0.25V, after 160.000 hours of operation. The temperature history of the pipeline, altogether with the pipe bend, is determined based on continuous temperature monitoring records. Compared results of remaining life assessment are displayed for monitored temperature records and for designed operating temperature in the same time period. The stress calculation in the pipe bend wall is performed by three methods that are usually applied so to emphasize the differences in the obtained results of remaining life assessment.", publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd", journal = "Thermal Science", title = "Thermal history and stress state of a fresh steam-pipeline influencing its remaining service life", pages = "704-691", number = "3", volume = "15", doi = "10.2298/TSCI110509050B" }
Bakić, G., Šijački-Žeravčić, V., Đukić, M., Maksimović, S. M., Plešinac, D.,& Rajičić, B.. (2011). Thermal history and stress state of a fresh steam-pipeline influencing its remaining service life. in Thermal Science Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 15(3), 691-704. https://doi.org/10.2298/TSCI110509050B
Bakić G, Šijački-Žeravčić V, Đukić M, Maksimović SM, Plešinac D, Rajičić B. Thermal history and stress state of a fresh steam-pipeline influencing its remaining service life. in Thermal Science. 2011;15(3):691-704. doi:10.2298/TSCI110509050B .
Bakić, Gordana, Šijački-Žeravčić, Vera, Đukić, Miloš, Maksimović, Stevan M., Plešinac, Dušan, Rajičić, Bratislav, "Thermal history and stress state of a fresh steam-pipeline influencing its remaining service life" in Thermal Science, 15, no. 3 (2011):691-704, https://doi.org/10.2298/TSCI110509050B . .