Disaster of the bucket wheel excavator caused by extreme environmental impact: Consequences, rescue and reconstruction
Само за регистроване кориснике
2015
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
A slope failure was the cause of a severe accident of bucket wheel excavator (BWE) Takraf SRs 1200. This paper is dedicated to the engineering challenges that accompanied the process of returning the BWE from its after accident state to the state of full exploitation readiness. After the accident, temporary stabilization of the superstructure was carried out as well as cutting off of severely damaged parts of the bucket wheel boom (BWB) with excavating device. Successful completion of the very delicate BWE rescue and balancing operation was followed by the reconstruction of the heavily damaged slewing platform. The integrity of the slewing platform structure was preserved by removing structural parts which were seriously damaged during long-term exploitation and breakdown, and installing the newly designed elements in critical zones. The redesign of the slewing platform structure produced favorable loads and stiffness distribution while eliminating geometrical stress concentrators. Com...parative analyses of the stress states pointed out that the redesigned slewing platform structure meets the strength criterion, unlike the original structure. The redesign solution enabled reconstruction in field conditions. This way the time of the reconstruction realization was drastically cut and losses due to the downtime of the machine were reduced several times over. After completing the slewing platform reconstruction, the newly manufactured BWB structural elements as well as the newly manufactured bucket wheel with drive were installed i.e. a partial revitalization of the BWE was done and by that the BWE's life was essentially prolonged.
Кључне речи:
Rescue / Redesign / Partial revitalization / Environment-in defects / Bucket wheel excavatorИзвор:
Engineering Failure Analysis, 2015, 56, 360-374Издавач:
- Pergamon-Elsevier Science Ltd, Oxford
Финансирање / пројекти:
- Одрживост и унапређење машинских система у енергетици и транспорту применом форензичког инжењерства, еко и робуст дизајна (RS-MESTD-Technological Development (TD or TR)-35006)
DOI: 10.1016/j.engfailanal.2015.01.002
ISSN: 1350-6307
WoS: 000361832300036
Scopus: 2-s2.0-84941994093
Колекције
Институција/група
Mašinski fakultetTY - JOUR AU - Bošnjak, Srđan AU - Savićević, Sreten AU - Gnjatović, Nebojša AU - Milenović, Ivan Lj. AU - Pantelić, Milorad P. PY - 2015 UR - https://machinery.mas.bg.ac.rs/handle/123456789/2224 AB - A slope failure was the cause of a severe accident of bucket wheel excavator (BWE) Takraf SRs 1200. This paper is dedicated to the engineering challenges that accompanied the process of returning the BWE from its after accident state to the state of full exploitation readiness. After the accident, temporary stabilization of the superstructure was carried out as well as cutting off of severely damaged parts of the bucket wheel boom (BWB) with excavating device. Successful completion of the very delicate BWE rescue and balancing operation was followed by the reconstruction of the heavily damaged slewing platform. The integrity of the slewing platform structure was preserved by removing structural parts which were seriously damaged during long-term exploitation and breakdown, and installing the newly designed elements in critical zones. The redesign of the slewing platform structure produced favorable loads and stiffness distribution while eliminating geometrical stress concentrators. Comparative analyses of the stress states pointed out that the redesigned slewing platform structure meets the strength criterion, unlike the original structure. The redesign solution enabled reconstruction in field conditions. This way the time of the reconstruction realization was drastically cut and losses due to the downtime of the machine were reduced several times over. After completing the slewing platform reconstruction, the newly manufactured BWB structural elements as well as the newly manufactured bucket wheel with drive were installed i.e. a partial revitalization of the BWE was done and by that the BWE's life was essentially prolonged. PB - Pergamon-Elsevier Science Ltd, Oxford T2 - Engineering Failure Analysis T1 - Disaster of the bucket wheel excavator caused by extreme environmental impact: Consequences, rescue and reconstruction EP - 374 SP - 360 VL - 56 DO - 10.1016/j.engfailanal.2015.01.002 ER -
@article{ author = "Bošnjak, Srđan and Savićević, Sreten and Gnjatović, Nebojša and Milenović, Ivan Lj. and Pantelić, Milorad P.", year = "2015", abstract = "A slope failure was the cause of a severe accident of bucket wheel excavator (BWE) Takraf SRs 1200. This paper is dedicated to the engineering challenges that accompanied the process of returning the BWE from its after accident state to the state of full exploitation readiness. After the accident, temporary stabilization of the superstructure was carried out as well as cutting off of severely damaged parts of the bucket wheel boom (BWB) with excavating device. Successful completion of the very delicate BWE rescue and balancing operation was followed by the reconstruction of the heavily damaged slewing platform. The integrity of the slewing platform structure was preserved by removing structural parts which were seriously damaged during long-term exploitation and breakdown, and installing the newly designed elements in critical zones. The redesign of the slewing platform structure produced favorable loads and stiffness distribution while eliminating geometrical stress concentrators. Comparative analyses of the stress states pointed out that the redesigned slewing platform structure meets the strength criterion, unlike the original structure. The redesign solution enabled reconstruction in field conditions. This way the time of the reconstruction realization was drastically cut and losses due to the downtime of the machine were reduced several times over. After completing the slewing platform reconstruction, the newly manufactured BWB structural elements as well as the newly manufactured bucket wheel with drive were installed i.e. a partial revitalization of the BWE was done and by that the BWE's life was essentially prolonged.", publisher = "Pergamon-Elsevier Science Ltd, Oxford", journal = "Engineering Failure Analysis", title = "Disaster of the bucket wheel excavator caused by extreme environmental impact: Consequences, rescue and reconstruction", pages = "374-360", volume = "56", doi = "10.1016/j.engfailanal.2015.01.002" }
Bošnjak, S., Savićević, S., Gnjatović, N., Milenović, I. Lj.,& Pantelić, M. P.. (2015). Disaster of the bucket wheel excavator caused by extreme environmental impact: Consequences, rescue and reconstruction. in Engineering Failure Analysis Pergamon-Elsevier Science Ltd, Oxford., 56, 360-374. https://doi.org/10.1016/j.engfailanal.2015.01.002
Bošnjak S, Savićević S, Gnjatović N, Milenović IL, Pantelić MP. Disaster of the bucket wheel excavator caused by extreme environmental impact: Consequences, rescue and reconstruction. in Engineering Failure Analysis. 2015;56:360-374. doi:10.1016/j.engfailanal.2015.01.002 .
Bošnjak, Srđan, Savićević, Sreten, Gnjatović, Nebojša, Milenović, Ivan Lj., Pantelić, Milorad P., "Disaster of the bucket wheel excavator caused by extreme environmental impact: Consequences, rescue and reconstruction" in Engineering Failure Analysis, 56 (2015):360-374, https://doi.org/10.1016/j.engfailanal.2015.01.002 . .