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Journal Mechanical Engineering
Published by Politeknik Negeri Ambon
ISSN : -     EISSN : 29884977     DOI : https://doi.org/10.31959
Core Subject : Engineering,
Industrial & Manufacturing Engineering Mechanical Engineering
Manufaktur, Perawatan, Otomotif, Teknik Produksi Migas dan Teknologi Rekayasa Sistem Mekanikal Migas
Arjuna Subject : Teknik (semua kategori) - Mekanik Material
Articles 108 Documents
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PERHITUNGAN BEBAN PENDINGIN PADA COLD ROOM DAN ABF-1 UNTUK PENYIMPANAN PRODUK HASIL LAUT DI PT. MINA USAHA HARAPAN Kakiay, Isaac Bryant; Waas, Kristofol; Lekatompessy, Roy R.
Journal Mechanical Engineering Vol. 2 No. 2 (2024): Agustus
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v2i2.2915

Abstract

Refrigeration has become an essential part in the design of spaces that will be occupied by people or products intended to provide space temperature, humidity, other process requirements. Refrigeration was originally used to produce ice, as technology advances, refrigeration has an important role in commercial and non-commercial refrigeration. Research on efficient refrigeration has been carried out by several previous studies. Previous methods were used by calculating cooling efficiency and heat loads that affect cold storage cooling.Based on an interview with one fishery company focused on processing quality seafood products located in PPN Tantui, PT Mina Usaha Harapan, the energy consumption for the cooling system takes up almost 70%-80% of the total energy expenditure of the company. Due to several factors, including excessive heat loads provision, or inefficient cold storage design. Therefore, author wants to calculate the cold storage performance in one of the seafood processing companies based on eco-fishing located in PPN Tantui, PT Mina Usaha Harapan.Calculations and analysis have been carried out in the previous chapter, several conclusions is made: 1) The average value of evaporator capacity is 34.96 kW for Cold Room and 57.39 kW for Air Blast Freezer 2) The calculated total load value (without product load) is 11.94 kW for Cold Room and 3.56 kW for ABF. 3) The company set a time of 9 hours to freeze 3500 kg of seafood, but according to calculation results, it only takes 7 hours to freeze 3830.4 kg of products with product temperature reaching -21 ͦC.Keywords: vapor compression cold storage, refrigeration load, cold room, abf, cold storage, evaporator capacity, seafood products
Evaluasi Kinerja Insulasi Pipa Uap Panas Fire Tube Boiler Pada Industri Kilang Minyak Dan Gas Siahaya, Delsi Natalia; Hatuwe, Azmain. N.; Malakauseya, Jeffrie J
Journal Mechanical Engineering Vol. 2 No. 2 (2024): Agustus
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v2i2.2916

Abstract

The steam pipe fuctions as a conduit for hot steam from the boiler to other unit. During the transport process in the pipe, it is expected that heat loss from the steam in minumized, so that the required on the steam pipe unit in need. Therefore, hot pipes need to be insulated. In this study, the insulation on the steam pipe is mae of rock wool with a thickness of 7,5 cm. After a long period of operation, it is necessary to evaluate the insulation perfomance in retaining the rate of heat loss. The method used in this research in theoretical review, where the data is obtained from field observations and then analyzed using equations from supporting references. From the discussion results, it is found heat loss in the pipe occurs through conduction and convection, also influenced by variations in ambient temperature. The average total heat loss is 15,715.90 Watts. The percentage of heat loss compared to the total steam transported through the pipe is 0,3376% on average, and the insulation perfomance in preventing heat loss is considered still effective. Keywords: Insulation,Boiler, Steam pipe,Refinery.
ANALISIS LAJU KOROSI DAN SISA UMUR PAKAI PADA TANGKI TIMBUN BAHAN BAKAR DI PLTD HARUKU Marasabessy, Salman; Karyani, M.Said; Lilipaly, Eka R. M. A. P.
Journal Mechanical Engineering Vol. 2 No. 2 (2024): Agustus
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v2i2.2917

Abstract

Corrosion resistance is the most important criterion in determining both the service life (remaining life) and operational reliability of equipment in the oil and gas industry. So it is very important to monitor the performance of every equipment in this industry. As with storage tanks, during long periods of operation and use, performance will likely decrease or could be said to experience thinning, thereby posing a danger to the thickness and remaining life of the ultrasonic thickness measuring instrument. differences in steel thickness data from the beginning and the thickness carried out by researchers. The data collected is also data that determines the minimum value for steel thickness in order to calculate the useful life of the media that will be examined by tanks that carry out measurements and maintenance using API 653 standards. Take measurements at several points 1. From the results of the analysis of the 100KL Tank located at PLTD HARUKU Using the UTG-90 Ultrasonic Thickness Gauge tool for plate thickness in August 2024, the results were that for Course 1 3.3, Course 2 3.4, Course 3 4.1, and Course 4 4.0 and the remaining tank life for each -Course 1, Course 2, Course 3 and Course 4 respectively are 11.26 years, 11.86 years, 32 years, 27.8 years1. The 100KL tank needs to undergo a Remaining Life Assessment (RLA) in 2028 and a regular tank inspection routine must be carried out to prevent leaks in the tank at least once every 4 years. Keywords : Tangki, corrosion, remaining life, tank thickness
ANALISA TEORITIS HASIL PENGENDALIAN KOROSI PADA INSTALASI PIPA MINYAK DI PERUSAHAAN X Waworundeng, Tierza Yulia; Tuny, Samuel M. J. S.; Pelasula, Berthy
Journal Mechanical Engineering Vol. 2 No. 2 (2024): Agustus
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v2i2.2918

Abstract

Corrosion in oil pipelines is a frequent problem in the upstream oil and gas industry, reducing the strength of the structure to withstand fluid pressure and causing severe damage that cannot be repaired. This study aims to determine the factors that cause corrosion, apply the coating method as corrosion control, and conduct a comparative analysis of the corrosion control methods used in the oil piping system. The results of the analysis show that environmental conditions affect the type of material to be used. The use of the right pipe material such as stainless steel or API 5L steel can help in the selection of corrosion control methods, one of which is the coating method. Thus, this research helps to improve the operational efficiency of oil pipeline installations, reduce damage, and extend the service life of pipelines. In addition, this study also aims to compare the effectiveness of the corrosion control methods applied and the materials used, so that it can provide the right recommendations to control corrosion in oil pipes using an effective coating method.
EVALUASI KINERJA CARGO OIL STRIPPING PUMP TYPE BORNEMANN TWIN SCREW 2HM4200-100 DI KAPAL MT. NONI T Kayadoe, Yuliens Anggin; Lekatompessy, Roy R; Huka, Graciadiana I; Hahury, Sanny
Journal Mechanical Engineering Vol. 2 No. 2 (2024): Agustus
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v2i2.2919

Abstract

Evaluation of the performance of cargo oil stripping pumps on the Mt. Noni T ship is needed for smooth loading and unloading of avtur at PT Pertamina Prata Niaga Integrated Wayame Ambon. Pumps that operate continuously will experience a decrease in work. This can be caused by several factors, namely the age of the pump, and the level of roughness of the pipe that causes an increase in head loss. The purpose of this study is to evaluate the performance of cargo oil stripping pumps on the MT. Noni T. The method carried out in the study uses a quantitative method with 2 variables. The independent variable is the input power and output power of the pump while the bound variable is the efficiency of the pump. The data obtained consisted of primary data and secondary data. The methods used when collecting data are interview, observation, and documentation methods. The result of this study is that there is a decrease in pump efficiency which was initially 100% to 80% influenced by the life of the pump and its operating time. Suggestions that can be given are Conducting periodic inspections of the pump to prevent damage that may occur in the future and Conducting inspections of the pump drive motor so that the pump works properly.Keywords: Screw, pump, efficiency, tanker, Flow.
ANALISA LAJU KOROSI PIPA SCH 40 SEAMLESS DENGAN VARIASI MEDIA PENGKOROSIAN AIR PAYAU DAN AIR LAUT Maitimu, Cindy Gabriel; Loppies, Leslie S.; Pellu, Denny Ismail; Huka, Graciadiana I
Journal Mechanical Engineering Vol. 2 No. 2 (2024): Agustus
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v2i2.2920

Abstract

Metals, especially steel, are widely used in various industrial applications due to their strength and durability. However, corrosion is a significant drawback that can shorten the life of the material. This research aims to analyze the corrosion rate of SCH 40 seamless pipes with a variety of corrosion media: brackish water, sea water, aquadess, NaCl solution, and oxygen, in conditions without paint coating and with paint coating. The research method uses the weight loss method according to the ASTM G102-89 standard, where the corrosion rate is measured in millimeters per year (mmpy) by calculating the difference in pipe weight before and after immersion. The results show that the corrosion rate without paint coating is: brackish water 0.00016 mmpy, sea water 0.00014 mmpy, aquadess 0.00016 mmpy, NaCl 0.00015 mmpy, and oxygen 0.0000045 mmpy. Seawater showed the lowest corrosion rate, possibly due to the formation of a passive protective layer. Oxygen had the lowest corrosion rate, indicating that oxygen alone does not cause significant corrosion without moisture. With paint coating, the pipe corrosion rate becomes: brackish water 0.00000125 mmpy, sea water 0.00000125 mmpy, aquadess 0.00000268 mmpy, NaCl 0.00000107 mmpy, and oxygen 0.00000125 mmpy. The use of paint coatings significantly reduces the rate of corrosion, especially in corrosive media such as brackish water, sea water and salt solutions. These results emphasize the importance of paint coatings to extend the service life of pipes by reducing the speed of corrosion. Key words: corrosion, seamless pipe, paint coating, corrosion media, corrosion rate, weight loss method
ANALISA LAJU KOROSI PADA SAMBUNGAN ELBOW PIPA MINYAK DI PT. PLN ( PERSERO ) ULPLTD POKA Suparman, Widianti; Pelasula, Berthy; Patty, Alexander A.
Journal Mechanical Engineering Vol. 2 No. 2 (2024): Agustus
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v2i2.2921

Abstract

The oil pipeline network is a critical infrastructure that plays a vital role in the oil and gas industry. However, one of the significant challenges faced by this pipeline system is corrosion. Corrosion is a chemical process that leads to the deterioration of metal quality due to electrochemical reactions with the environment. Corrosion in oil pipelines not only reduces the wall thickness but can also result in leaks, structural damage, and even accidents that negatively impact human safety and the environment.The objective of this research is to analyze the corrosion rate in the elbow joints of oil pipelines at PT PLN (Persero) ULPTD Poka. This study employs a quantitative method involving two variables. The independent variable is the elbow type, specifically the 90° elbow, while the dependent variables are the corrosion rate calculations and the remaining service life (RSL) of the elbow pipes.The results indicate that the corrosion rate varies at each measurement point on the elbow joints. The RSL calculations show significant variation based on the thickness of the pipe wall at each elbow. The highest RSL values were found in elbows 3, 4, 5, and 8, with a remaining service life of up to 49.5 years. Conversely, elbow 1 had the lowest RSL at 38 years. The higher RSL in some elbows suggests that despite experiencing corrosion, the remaining thickness is still sufficient to support the pipeline's function for a longer duration. Recommendations include the need for intensive maintenance on the oil pipeline elbow joints, especially on segments above ground and near corrosive sources. Keywords: Oil Pipeline, Corrosion Elbow Joint, Remaining Service Life (RSL), Maintenance
EVALUASI STIMULASI PENGASAMAN (MATRIX ACIDIZING) RESERVOIR PADA SUMUR FFS DI LAPANGAN PT PERTAMINA EP CEPU FIELD ZONA 11 Salhuteru, Ferinda F; Subekti, Henk; Pelasula, Berthy
Journal Mechanical Engineering Vol. 3 No. 1 (2025): APRIL
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v3i1.3304

Abstract

As time goes by, FFS well production has decreased. This then became the background for implementing matrix-type acidification stimulation measures in the relevant fields. The acid used in FFS wells is 15% HCl and 6% HF. Significantly, this acidification process has 3 stages that need to be applied, namely, preflush, mainflush, and postflush. After this stimulation, it is estimated that there will be an increase of 26.5% with an oil price of 50 USD per bbl. After evaluation, it seems clear that there has been an increase in the production rate considering that the two compounds have reacted on a scale as seen in the increase in Q price in the FFS tang well, from 147 BOPD to 200 BOPD. From an economic perspective, we can also see efficiency in the use of equipment because it minimizes many aspects that need to be changed, in other words the production rate increases only with basic capital for certain chemicals. From the evaluation carried out, economic indicators can also be seen which make this research much more economical compared to previous research, where the FFS Well has a gross profit (Gross Revenue) of 8316000 USD. Meanwhile, the net profit obtained reached 3992000 USD. The NPV value with a discount of 11.87% is 477.58 USD, with an IRR of 33,79693377% and a POT of approximately 4.48 years. Keywords: Production rate, FFS well, scale, matrix, acidizing.
OPTIMASI PRODUKSI SUCKER ROD PUMP PADA SUMUR HCP LAPANGAN PSN Pasanea, Hanadry Charlin; Untoro, Edi; Lekatompessy, Roy R.
Journal Mechanical Engineering Vol. 3 No. 1 (2025): APRIL
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v3i1.3305

Abstract

Oil and gas are important resources that every country must fulfill and Indonesia, despite being a producer, has not been able to meet domestic demand. In field operations, wells do not always produce optimally, so an evaluation and optimization of pump performance is needed to produce optimal production rates. Research on the evaluation of the Sucker Rod Pump at Well M has been carried out by Untoro, E & Saleky, H (2023), obtained the results of the flow rate (Qmax) of 945.403 Bfpd, the current Q of 236.63 Bfpd, pump displacement (v) of 792.091091 Bfpd, and pump volumetric efficiency of 29.87497%. Thus, from the evaluation results, this research will optimize the Sucker Rod Pump, with the aim of obtaining Sucker Rod Pump optimization results to obtain the optimal production rate. Optimization was carried out by changing the pump SPM from 6 SPM to 8 SPM and the pump stroke length from 150 in to 145 in, so that the production rate increased from the previous 236.63 Bfpd to 355,3 Bfpd, and the pump volumetric efficiency increased to 34,77%. Keywords: Sucker Rod Pump, Optimization, Artificial Lift
PENGARUH LAJU KOROSI DAN UMUR PAKAI PADA TANGKI BAJA DI PLTD NAMLEA KABUPATEN BURU Patikayhattu, Erwin; Narpati, Herjuno Tri; Loppies, Leslie S.; Latumaerissa, H. S.; Hahury, Sanny
Journal Mechanical Engineering Vol. 3 No. 1 (2025): APRIL
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v3i1.3322

Abstract

Storage tanks, also commonly referred to as storage tanks, are one of the units or pieces of equipment used to store fuel. One industry that uses this equipment is the Namlea PLTD located in Buru Regency. The type used is a Fixed Cone Roof Tank to accommodate fuel that will be supplied to the power plant engine (Diesel Engine). The service life of the tank is ± 5 years, but based on field observations, it appears that there is corrosion on the surface of the tank, which is quite fast. Concerning that, the purpose of this study is to calculate the corrosion rate and corrosion hazard during the general period of use. The method used in data collection is field observation by measuring plate thickness using an Ultrasonic Thickness Gauge. Furthermore, the measurement results were analyzed using the API 563 standard to calculate the corrosion rate. The results showed that the corrosion rate on the tank blanket (shell) at the first level was 0.9 mm/year, the second level was 0.6 mm/year, the third level was 0.88 mm/year, the fourth level was 0.9 mm/year, and the fifth level was 0.85 mm/year. Then the remaining life for shell parts at the first level is 6 years, the second level is 7.6 years, the third level is 7.8 years, the fourth level is 7.9 years, and the fifth level is 9 years. The results of data processing indicate that the 300 KL diesel tank remains feasible for operation in Namlea PLTD, Buru Regency. Keywords: Fixed Cone Roof Tank, standard, thickness, corrosion rate

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