Failure investigation on rear water wall tube of boiler
This paper presents failure investigation on the SA210-A1 rear water wall tube by visual site inspection, tube wall thickness measurements and microscopic examination. The rear water wall tube has failed with wide open burst and was situated at the boiler nose lower bent region. On-site wall thickne...
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my.uniten.dspace-308932023-12-29T15:55:24Z Failure investigation on rear water wall tube of boiler Ahmad J. Purbolaksono J. Beng L.C. Rashid A.Z. Khinani A. Ali A.A. 57210531371 8621252500 26423491900 26326524600 26326351400 57213370267 Failure analysis Fly-ash Rear water wall tube Visual inspection Wall thinning Boilers Creep Inspection Microscopic examination Quality assurance Safety factor Thickness gages Thickness measurement Tubes (components) Visual communication Water analysis Creep analysis Failure investigation Failure mechanism Rear water wall tube Root cause Thermally activated process Visual inspection Wall thinning Water wall tubes Failure analysis This paper presents failure investigation on the SA210-A1 rear water wall tube by visual site inspection, tube wall thickness measurements and microscopic examination. The rear water wall tube has failed with wide open burst and was situated at the boiler nose lower bent region. On-site wall thickness measurements were performed on all the rear water wall tubes located at the same level of the ruptured tube. The tubes were observed to have experienced significant wall thinning. Microscopic examinations on the failed rupture region and some distance away region of the as-received tubes are also conducted in order to support in determining the failure mechanism and failure root cause. Failure mechanisms are discussed and the findings obtained from the site inspection, wall thickness measurements, microscopic examinations and creep analyses may finally reveal the failure mechanism and main root cause of the failure. The failure mechanism is identified as a result of the combination of the significant localized wall thinning of the rear water wall tube due to fly-ash erosion and a thermally activated process of creep problem due to increasing of temperatures. � 2009 Elsevier Ltd. All rights reserved. Final 2023-12-29T07:55:24Z 2023-12-29T07:55:24Z 2009 Article 10.1016/j.engfailanal.2009.03.012 2-s2.0-67649840473 https://www.scopus.com/inward/record.uri?eid=2-s2.0-67649840473&doi=10.1016%2fj.engfailanal.2009.03.012&partnerID=40&md5=af703c9ee4263e77133849235b622542 https://irepository.uniten.edu.my/handle/123456789/30893 16 7 2325 2332 Scopus |
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Failure analysis Fly-ash Rear water wall tube Visual inspection Wall thinning Boilers Creep Inspection Microscopic examination Quality assurance Safety factor Thickness gages Thickness measurement Tubes (components) Visual communication Water analysis Creep analysis Failure investigation Failure mechanism Rear water wall tube Root cause Thermally activated process Visual inspection Wall thinning Water wall tubes Failure analysis |
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Failure analysis Fly-ash Rear water wall tube Visual inspection Wall thinning Boilers Creep Inspection Microscopic examination Quality assurance Safety factor Thickness gages Thickness measurement Tubes (components) Visual communication Water analysis Creep analysis Failure investigation Failure mechanism Rear water wall tube Root cause Thermally activated process Visual inspection Wall thinning Water wall tubes Failure analysis Ahmad J. Purbolaksono J. Beng L.C. Rashid A.Z. Khinani A. Ali A.A. Failure investigation on rear water wall tube of boiler |
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This paper presents failure investigation on the SA210-A1 rear water wall tube by visual site inspection, tube wall thickness measurements and microscopic examination. The rear water wall tube has failed with wide open burst and was situated at the boiler nose lower bent region. On-site wall thickness measurements were performed on all the rear water wall tubes located at the same level of the ruptured tube. The tubes were observed to have experienced significant wall thinning. Microscopic examinations on the failed rupture region and some distance away region of the as-received tubes are also conducted in order to support in determining the failure mechanism and failure root cause. Failure mechanisms are discussed and the findings obtained from the site inspection, wall thickness measurements, microscopic examinations and creep analyses may finally reveal the failure mechanism and main root cause of the failure. The failure mechanism is identified as a result of the combination of the significant localized wall thinning of the rear water wall tube due to fly-ash erosion and a thermally activated process of creep problem due to increasing of temperatures. � 2009 Elsevier Ltd. All rights reserved. |
| author2 |
57210531371 |
| author_facet |
57210531371 Ahmad J. Purbolaksono J. Beng L.C. Rashid A.Z. Khinani A. Ali A.A. |
| format |
Article |
| author |
Ahmad J. Purbolaksono J. Beng L.C. Rashid A.Z. Khinani A. Ali A.A. |
| author_sort |
Ahmad J. |
| title |
Failure investigation on rear water wall tube of boiler |
| title_short |
Failure investigation on rear water wall tube of boiler |
| title_full |
Failure investigation on rear water wall tube of boiler |
| title_fullStr |
Failure investigation on rear water wall tube of boiler |
| title_full_unstemmed |
Failure investigation on rear water wall tube of boiler |
| title_sort |
failure investigation on rear water wall tube of boiler |
| publishDate |
2023 |
| _version_ |
1806424561633198080 |
| score |
13.211869 |