Shaft Failure Sea Water Pumps At the Steam Power Plant Units
Djoko Setyo Widodo1, Desiran Sembiring2, Bintang Adjiantoro3, AB Saman Bin ABD Kader4

1Djoko Setyo Widodo, PhD Student Faculty of Mechanical Engineering Program Technology University of Malaysia and Lecture at Universitas Krinadwipayana Jakarta, Indonesia.
2Desiran Sembiring, PhD Student Faculty of Mechanical Engineering Program of the Technology University of Malaysia.
3Bintang Adjiantoro, Metallurgical Research Center LIPI, Serpong PUSPIPTEK Complex Malaysia.
4AB Saman Bin ABD Kader, Professor Faculty of the Mechanical Engineering Program Technology University of  Malaysia.
Manuscript received on September 23, 2019. | Revised Manuscript received on October 15, 2019. | Manuscript published on October 30, 2019. | PP: 7008-7012 | Volume-9 Issue-1, October 2019 | Retrieval Number: A9977109119/2019©BEIESP | DOI: 10.35940/ijeat.A9977.109119
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Abstract: The water pump used to suck and drain seawater to the heat exchanger unit at a Steam Power Plant (PLTU), is damaged. To find out the causal factors of this damaging phenomenon, the fractured shaft is tested which includes visual observation, fractography testing, metallography, hardness testing and chemical composition analysis on a fractured shaft. By knowing the type and cause of damage to the water pump shaft, steps of prevention or prevention can be formulated so that the same damage can be avoided. From the test results, it was found that the average carbon content was lower than the AISI 316 standard. While the average hardness was lower than the standard hardness. The damage that occurs to the CWP water pump shaft is basically caused by fatigue fracture due to excessive workload in the form of dynamic loading.
Keywords: Shaft, fracture, testing, corrosion, material fatigue.