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All Journal Rotasi GEMA TEKNOLOGI Abdimas Rekayasa Mesin J-Dinamika: Jurnal Pengabdian Kepada Masyarakat Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Jurnal Pengabdian Vokasi Journal of Vocational Studies on Applied Research

Seno Darmanto

Program Diploma III Teknik Mesin Fakultas Teknik Universitas Diponegoro

Author-ID : 249943

Aerospace Engineering Arts Humanities Automotive Engineering Computer Science & IT Education Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mechanical Engineering Social Sciences

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Failure Analysis at Stem Valve Fire Hydrant in LNG Plant Mrihardjono, Juli; Pohan, Herman Abidin; Darmanto, Seno
Journal of Vocational Studies on Applied Research 2019: JVSAR, Volume 1 Issue 2 Year 2019 (October 2019)
Publisher : Vocational College of Universitas Diponegoro

Hydrant is one of fire extinguisher fix system that use pressure water and flowed through the pipes and fire hose. There are more 250 Hydrant in this LNG Plant and based on finding at the field, many stem valve of outlet hydrant in fracture condition, therefore the author wants to analyze about the problem from this material, this reserch aims to find out root cause dan conduct failure analysis, method of reserch that conducted is visual check to predict possible cause from failure of stem valve fire hydrant and then conducted fractographic analysis to find out what type of fracture that happen to this material and Tensile Strenght Test to Find out the the actual strenght of the material

Reliability Analysis of Fire Water Line Sutrisno, Sutrisno; Ariwibowo, Didik; Darmanto, Seno; Mangestiyono, Wiji; Saputra, Galih Satria Hendri
Journal of Vocational Studies on Applied Research 2020: JVSAR, Volume 2 Issue 2 Year 2020 (October 2020)
Publisher : Vocational College of Universitas Diponegoro

The purpose of this research is to analyze the reliability of firewater as a water distribution for emergency conditions. To determine the remaining useful life (RUL) of the firewater line, this research will apply the counting process so that the rate of remaining useful life (RUL) of the firewater line can be known. The data used as the basis for calculation is failure data gained from technical division databases from 2018. The data obtained will be processed using visual inspection and ultrasonic thickness test methods to produce the remaining useful life of the firewater line. From 5 example fire water lines, only 3 needed to replace of firewater line cause less than 10 years. RUL to 9 years at 10” and 12” Train C/D, 2.45 year at 14” Train C/D, 8 years at 10” and 12” Utilities I. The mathematical modeling will be verified using visual thickness and ultrasonic Test method to ensure Remaining useful life of firewater line at Badak LNG. Visual inspection refer to API 571 and ultrasonic test refer to API 570 and ASME B31.3

Modification of Drain Hayward Strainer Pipe Header Pipes to Improve Efforts of Cooling Water Pump Train EF Badak LNG Bontang Murni, Murni; Ferdiyanto, Riky; Darmanto, Seno; Ariwibowo, Didik
Journal of Vocational Studies on Applied Research 2019: JVSAR, Volume 1 Issue 2 Year 2019 (October 2019)
Publisher : Vocational College of Universitas Diponegoro

In Badak LNG the role of the cooling water pump is very important, and becomes the main support for transferring sea water where the water is used in the cooling process of industrial machinery or as emergency safety for firefighters. Water pump cooling has a hayward strainer that serves to filter water with a smaller filter so that the cooling water that is sent is completely free of dirty water. The purpose of this final project is to find out the main causes of the performance degradation of the EF cooling water pump due to the barrier to the hayward strainer which results in lower pressure on the cooling water. The methodology applied was based on field observations and conducted a solidwork simulation test. Field observations show that when more than one hayward strainer is in backwash, the effectiveness of backwash release decreases because the main disposal of the hayward strainer becomes one. The solidwork simulation found that the pressure on the Hayward train E strainer was high enough to create back pressure and limit the flow of the Hayward strainer outlet. By performing actual simulations by only running only one exhaust system at Hayward train E trainer has improved performance on the hayward strainer system. The performance analysis of the cooling water pump was carried out to determine the cause of the pump pressure drop on the hayward strainer and it was found that the main cause of performance was due to back pressure disposal, the pressure was increasing at each outlet of the Hayward strainer which had more distance to the outlet drain. Taking into account the problem of back pressure, separating the train E and F cooling water pump lines is a good choice. After simulating solid work, the separation of the E train line and the F colling water train shows an increase in the performance of the cooling water pump system because the Hayward strainer runs well so that the pump pressure is maintained for the industrial engine cooling needs.

Failure Analysis Of Water Pump Shaft Ariwibowo, Didik; Putra, Sulthonul; Darmanto, Seno; Mrihardjono, Juli; Mangestiyono, Wiji
Journal of Vocational Studies on Applied Research 2019: JVSAR, Volume 1 Issue 2 Year 2019 (October 2019)
Publisher : Vocational College of Universitas Diponegoro

A water pump shaft for utility water raw material was failed. The shaft was broken into two parts. While in dismantling, the sand was found in chamber between bearing and shaft. There was also a bolt in the impeller. According to reports, the pump has been repaired and since there was no replacement shaft but the shaft was reused in reverse position. There was no inspection of the shaft when it was disconnected by operational reasons. The failure analysis of the broken-shaft was performed to investigate the cause of the failure. Two inspection and analysis were perfomed those are visual inspection and material identification and analysis. When material analysis of the shaft was carried out there was difference between examination and data specification of the shaft.The material identification indicate that the material was AISI SS 304 whereas specification data states SS 316. Both materials have similar tensile stress, so the difference was not the contributor of the failure. The present of foreign material was consider as the cause of the failure. The foreign material caused to stucked on rotation of shaft and increasing in tensile of the shaft over its ultimate strength.

ANALYSIS OF COCONUT FIBER REINFORCED COMPOSITES WITH HOT PRESS TECHNIQUES Darmanto, Seno; Nugroho, Alvin Dio; Fathurrohman , Nur Kholis; Saputra , Imam; Kusni, Muhammad; Muflikhun, Muhammad Akhsin
Jurnal Rekayasa Mesin Vol. 15 No. 1 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i1.1452

Natural fibre waste is a material with high material resistance, including fibres derived from coconut fruit. Coconut fruit waste is frequently underutilised and can contribute to environmental pollution if not handled correctly. This study's objective is to convert waste from coconuts into fibres, incorporate them into composite mixtures, and produce robust materials. Using coconut fibre presents a significant advantage in that it is easily biodegradable, reducing environmental pollution. The aim of this research is to produce a composite board material using HDPE plastic and coconut fibre, which is resistant to corrosion, through the hot felting method. This method of producing composite materials results in minimal voids and high material density, effectively reducing the chances of material failure. The composite specimens were subjected to testing following the ASTM D 638-01 standard. Technical abbreviations used throughout the text will be explained upon first use. The study achieved an excellent average tensile strength, strain, and elastic modulus of 22.45 MPa, 7.15%, and 5.13 MPa, respectively. The manufacture of composite materials using coconut coir fibre combined with HDPE plastic through the hot felting method resulted in high material strength, corrosion resistance, and reprocessability.

Co-Authors Abdurohman, Hasan Adi Nugroho Al Ayubbi, Irfan Baehaqi Budiharja, Yuniar Anis Daryono, Mohammad Didik Ariwibowo Eko Julianto Sasono Fathurrohman , Nur Kholis Ferdiyanto, Riky Firdaus, Ghifa Haqni, Firdaus Kurniawan Hardyanto, Arief Prakoso Hartono Hartono Ireng Sigit Atmanto Juli Mrihardjono Kusni, Muhammad Margaretha Tuti Susanti Muhammad Akhsin Muflikhun Mukhamad, Alaya Fadlu Hadi Murni Murni Nina Mardiana (F01108057) Nugroho, Alvin Dio Nugroho, Galih Satrio Permana, Bagus Hendra Pohan, Herman Abidin Putra, Sulthonul Ridwan, Mohd. Saputra , Imam Saputra, Galih Satria Hendri Sarwoko Sarwoko Siswahyudianto Sri Utami Handayani Sriyana Sriyana Sunarso Sugeng Susastro, Susastro Sutrisno, Sutrisno Triyatno Triyatno Wibisono, Anggit Wiji Mangestiyono Windu Sediono Yuniarto Yuniarto, Yuniarto Yusuf Umardani Yusuf, Bakharuddin

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