STUDI KASUS KERUSAKAN POROS POMPA BENAM LISTRIK PADA SUMUR MINYAK DI PERUSAHAAN MIGAS YANG BERLOKASI DI MUARA ENIM

YUDIANTO, YUDIANTO and Pratiwi, Diah Kusuma and Mataram, Agung (2021) STUDI KASUS KERUSAKAN POROS POMPA BENAM LISTRIK PADA SUMUR MINYAK DI PERUSAHAAN MIGAS YANG BERLOKASI DI MUARA ENIM. Master thesis, Sriwijaya University.

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Abstract

The purpose of this research is to study and analyze the main factors causing the electrical submersible pump (ESP) pump shaft to break so that the damage does not happen again. ESP is a kind of centrifugal pump with multistage stages driven by an electric motor which is designed to be submerged in the working fluid source to a depth of thousands of meters from the ground surface. The tests carried out were visual inspection and fractography, chemical composition test, micro test, hardness test, and solidworks simulation. In the composition test, it was found that the type of material used was monel (Nickel alloy 500), which was included in the standard in the selection of materials for the shaft. In the hardness test, 76 test points were carried out. The smallest value is the one closest to the fault, while the normal value is in the range of 384 – 412 VHN (entered the Monel criteria with a yield strenght of 1103 Mpa). The micro test found a transition zone and dendrites (on one side of the shaft fracture), indicating that the material had been welded. Then the Solidworks simulation test is used to evaluate the effect of the torsional load due to the electric motor on the voltage distribution on the pump shaft. In the Solidworks simulation test, the von Mises voltage produced by an electric motor with a power of 120 HP and 160 HP respectively is 402.51 Mpa and 538.38 Mpa with a safety factor of 2.74 and 2.05 respectively. In previous studies, the minimum design safety factor for non-fluctuating loads was 1.5, while for minimum fluctuating loads it was 2.0, meaning that there was nothing wrong with the motor design on the yield strength of monel material. From these tests it can be concluded that firstly failure due to material type and motor overload (from 120 HP to 160 HP) can be ruled out. Second, the discovery of dendrite as an initial crack is the main factor causing damage to the pump shaft. The three areas closest to the fault have the lowest hardness values below the normal hardness values of the base material

Item Type:	Thesis (Master)
Uncontrolled Keywords:	ESP, centrifugal pump, stages, fluida, monel, nickel alloy 500, shaft, Vickers hardness number, transition zone, dendrite, motor power, design safety factor, non fluctuating load, fluctuating load, welding, simulasi solidworks, initial crack.
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ170-179 Mechanics applied to machinery. Dynamics T Technology > TJ Mechanical engineering and machinery > TJ227-240 Machine design and drawing T Technology > TS Manufactures > TS200-770 Metal manufactures. Metalworking > TS200.S76 Steel alloys--Fatigue. Steel alloys--Fracture. Steel alloys--Effect of temperature on T Technology > TS Manufactures > TS200-770 Metal manufactures. Metalworking > TS227.G6327 Welding
Divisions:	03-Faculty of Engineering > 21101-Mechanical Engineering (S2)
Depositing User:	Users 2478 not found.
Date Deposited:	24 Nov 2021 03:34
Last Modified:	24 Nov 2021 03:34
URI:	http://repository.unsri.ac.id/id/eprint/57886

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