Nurbanasari, Meilinda and Purwanto, Tri Sigit and Kristyadi, Tarsius and Syamsurizal, Deden (2019) Failure on Bearing Cooler Coils Connector of Hydroelectric Power Plant. In: 2nd International Symposium on Advanced Materials and Apllication (ISAMA 2019), January 18-20, 2019, Seoul, South Korea.
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Abstract
Bearing cooler coils connector of 175 MW hydropower plant experienced premature leaks after one year operation and caused an unscheduled shutdown. To avoid the same failure in the future, the leaking bearing cooler coils connector was investigated. Nondestructive tests, such as chemical composition analysis, hardness test, metallographic test, characterization of the filler brazing by scanning electron microscopy – energy dispersive X-ray spectroscopy were conducted. The results confirmed that the bearing cooler coils connector consisted of two types of material namely the flange material which was made of stainless steel 304 and the pipe material which was a Cu/Ni 90/10 and were joined together using brazing process. It was a clearly evidence that leaks occurred in the brazing area and the leakage was due to improper brazing process. It was shown by the excessive gap and a lot of porosity.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Paper |
| Depositing User: | Azizullah Putri Akbar |
| Date Deposited: | 29 Mar 2023 06:02 |
| Last Modified: | 29 Mar 2023 06:02 |
| URI: | http://eprints.itenas.ac.id/id/eprint/2183 |
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