Open AccessFailure analysis of pipeline elbow connecting high pressure heater to deaerator in a steam power plant
Author(s) -
Fajar Dwi Yudanto,
Dwi Ariyanto,
Abdul Aziz Arfi,
Suwarno Suwarno
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1034/1/012176
Subject(s) - deaerator , pipeline (software) , engineering , thermal power station , work (physics) , power station , high pressure , nuclear engineering , petroleum engineering , reliability engineering , process engineering , environmental science , mechanical engineering , waste management , electrical engineering , inlet , engineering physics
The coal-based steam power plant accounts for the largest electricity generation in Indonesia. Disruption in operation mostly caused by a failure of a component of the system and considered a serious problem and must be prevented. Failure can be originated from operations as well as the design. In the present work, a root cause study was performed on failure elbow in the steam line from the high-pressure heater (HPH) to the deaerator. The failure occurred only after 5 years of operation. The analysis was started with a visual examination, material verification, microstructural investigation, thickness measurement, and computational modelling. The analysis and simulation study showed that the failure of the elbow caused by two-phase flow where steam quality was compromised. The recommendation was to examine the HPH and to find possible leaks of the waterside to the steam side in the HPH system.