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INDONESIA
Jurnal IPTEK
Published by Institut Teknologi Adhi Tama Surabaya
ISSN : 14117010     EISSN : 2477507X     DOI : -
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Computer Science & IT Industrial & Manufacturing Engineering Mechanical Engineering
Jurnal IPTEK - Media Komunikasi Teknologi Diterbitkan secara berkala setahun 2 (dua) kali pada bulan Mei dan Desember oleh Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM), Institut Teknologi Adhi Tama Surabaya (ITATS). Jurnal ini memuat hal-hal yang berkaitan dengan bidang Teknik Sipil, Teknik Mesin, Teknik Elektro, Teknik Arsitektur, Teknik Perkapalan, Teknik Informatika, Teknik Industri, Teknik Kimia, Teknik Lingkungan, Teknik Pertambangan, Teknik Geologi, Desain Produk, Sistem Informasi, dan Sistem Komputer baik yang ditulis dalam bahasa Indonesia maupun bahasa Inggris (diutamakan).
Arjuna Subject : -
Articles 399 Documents
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Responsibility of the Captain in Transporting Goods at Sea Wibisono, Dimas
Jurnal IPTEK Vol 25, No 1 (2021): May
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2021.v25i1.1742

Abstract

In the provisions of Article 137 Paragraph (1) and (2) Law no. 17/2008 both the Grosss Tonnage 35 and motor boats Motor boats are less than Gross Tonnage 35 as well as for boats traditionally less than the Gross Tonnage 105, I insist on the point states: The captain is the leader on the ship who owns law enforcement authority and are responsible for safety, security and order of ships, and cargo goods obligation. In another provision it is also stated that the master is the leader of the ship, who every certain event must take a stand and act in accordance with skill, precision and wisdom,as required to carry out their duties (Article 342 paragraph (1)KUHD). As the leader of the ship, the master must be responsible all his actions against the ship and its cargo in all events that happens in the sea. From that the legislators gave a burden responsibility to the master as regulated in Article 342 paragraph (2) KUHD, that is, if the action is committed in that position is intentional or negligent, which causes damage to other people.The breadth obligations given by law, in the implementationtransportation in terms of the responsibility of the Ship Leader / Master to safety, security and order of ships and sailors in essence boils down to the interests of the cargo as the agreed object which is the obligation of the carrier. The obligation that arises from its existence an agreement as intended gives birth to responsibilities implicitly it is the responsibility of the transportation company. The formulation of these provisions includes the extent of the obligations given by Constitution. If you listen to the process of organizing deep transportation regarding the responsibility of the Ship Leader / Master for safety, security and order of ships and sailors basically boils down to in the interest of cargo as the agreed object is the obligation of the carrier.
Kontrol Kecepatan Motor BLDC dengan PID - Firefly Triwijaya, Santi; Prasetyo, Yuli; Wati, Trisna
Jurnal IPTEK Vol 25, No 1 (2021): May
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2021.v25i1.963

Abstract

Conventional DC motors often experience problems that require regular maintenance. The use of conventional DC motors can be replaced with Brushless DC (BLDC) motors. This BLDC motor has good efficiency and durability. Increasing the ability of BLDC motors can be done by speed regulation using the Proportional-Integral-Derivative (PID) method combined with Firefly Algorithm. Testing this method uses matlab 2014a. The firefly algorithm can obtain parameter values of Kp, Ki, and Kd which are then used as PID input. Because of inaccuracies in determining the value of a constant in PID and can cause the length of time to reach the desired speed. BLDC motor speed regulation with the PID method combined with firefly algorithm can make the BLDC motor reach synchronous faster
Occupational Health and Safety (OHS) Analysis at The PG Kremboong Production Department using The Risk Priority Number and 5 Whys Method Erdhianto, Yoniv
Jurnal IPTEK Vol 25, No 1 (2021): May
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2021.v25i1.1846

Abstract

Occupational Health Safety (OHS) is not only important for improving the social security and welfare of its workers but far from that, K3 has a positive impact on the sustainability of employee work productivity. In term of safety, the production department of PG Kremboong still bring some risks that may cause work accidents, such as the leaks in the evaporator and juice heater body that frequently happened in the processing department. The hazard identification assessment uses the RPN (Risk Priority Number) method where each risk-causing factor is assessed by its value of severity, frequency or probability (occurrence), and detection, then illustrated with a Pareto Diagram to determine the most dominant problem. and using the five why's analysis method to analyze the root causes of the problem in order to obtain a solution. The most dominant risk in PG. KREMBOONG is a leak in the evaporator body that hits the worker and a leak in the juice heater body, based on RPN values which reached 36 and 27.
Penilaian Postur Kerja Menggunakan Rapid Entire Body Assessment dan Perancangan Fasilitas Kerja pada Stasiun Kerja Press di Perusahaan Coco fiber Widiana, Dika Rahayu; Ramana, Indra Adi; Handoko, Lukman
Jurnal IPTEK Vol 25, No 1 (2021): May
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2021.v25i1.1157

Abstract

Press coco fiber merupakan proses cetak serat-serat hasil uraian sabut kelapa dengan beberapa tahap aktivitas kegiatan manual handling. Kegiatan manual handling dilakukan selama 8 jam secara berulang-ulang, hal ini dapat menyebabkan penyakit Musculoskeletal Disorders (MSDs). Oleh sebab itu, kuesioner Nordic Body Map  digunakan untuk mengetahui tingkat keparahan pekerja terhadap penyakit Musculoskeletal Disorders (MSDs).  Berdasarkan hasil kuesioner Nordic Body Map sebanyak 12 orang, menunjukkan bahwa sebanyak 8% pekerja mengalami tingkat risiko muskuloskeletal rendah, 33% pekerja mengalami tingkat risiko muskuloskeletal menengah, dan sebanyak 59% pekerja mengalami tingkat risiko muskuloskeletal yang tinggi. Analisis metode Rapid Entire Body Asssessment (REBA) menunjukkan pada aktivitas memasukkan coco fiber ke dalam mesin press memiliki nilai 11 termasuk ke dalam sangat tinggi dan diperlukan adanya tindakan segera mungkin. Analisis metode Recommended Weight Limit (RWL) dan Composite Lifting Index (CLI) untuk pekerjaan multi task menunjukkan nilai CLI  dikategorikan risiko tinggi karena 3, akan menyebabkan stress fisik bagi pekerja. Setelah perbaikan, skor REBA pada aktivitas memasukkan cocofiber ke dalam mesin press mengalami penurunan menjadi 3 dengan tingkat risiko rendah.
Analysis of Occupational Safety and Health in the Production Process Section Using the Failure Mode And Effect Analysis (FMEA) Method at PT Mitra Mandiri Perkasa HM, Gatot Basuki
Jurnal IPTEK Vol 25, No 1 (2021): May
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2021.v25i1.1778

Abstract

Based on the results of the analysis carried out, it was found that there were 29 work accidents in the turning wood production process for a period of 3 years, then after the classification was carried out based on the company's working environment conditions obtained 5 categories of work accidents. The results of the calculation of the risk prority number (RPN) show that the potential failure with the highest RPN level is that the hand is exposed to wood on the rip saw machine with an RPN value of 140. Proposed improvement is that machine operators must use PPE when doing work, provide a grace period when moving raw materials to rip saw machines to provide space for workers, routine inspections and always moving materials after being processed in the rip saw machines and giving danger signs in the production process area, improving standard operational procedures and periodic supervision in accordance with the applied K3 procedures.
Production of Liquid Smoke From Bamboo Waste Using a Pyrolysis Reactor: Optimization and Kinetics Studies Sinar Perbawani Abrina Anggraini; Susy Yuniningsih
Jurnal IPTEK Vol 25, No 2 (2021)
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2021.v25i2.2099

Abstract

There are many ways for preserving wood through the use of agricultural or biomass waste like bamboo. Its utilization can be used as a safe natural wood preservative for the community. In order to obtain a qualified liquid smoke and consumed-safe it is necessary to engineer the condenser conduit pipes. As a consequence, this study needs a performance test of condenser conduit pipe on pyrolysis reactor device. The purpose of this study is to determine the performance quality of pyrolysis reactor device based on the optimum of long condenser conduit pipe and to determine the reaction order. In this study, the pyrolysis process of 2,5 kgs bamboo was using a pyrolysis reactor in optimum operating conditions, conducted with condenser conduit pipes size 23 cm, 33 cm, 43 cm, 53 cm, 63 cm and 73 cm at temperature of 250ºC for 2 hours. The results of this study indicate that the optimal liquid smoke yield is obtained from 23 cm long condenser conduit pipe (21.66%); the mass of lost material is 52.49% found in 73 cm pipe; the performance of the pyrolysis reactor is 206.25 found in 23 cm pipe g/hour.m; and the reaction occured was included as the first order of reaction.
The effect of pretreatment process on lignocellulosic materials with a combination of microwaves and alkaline solvents on solid products. Medya Ayunda Fitri; Yulia Tri Rahkadima
Jurnal IPTEK Vol 25, No 2 (2021)
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2021.v25i2.2355

Abstract

The pretreatment process is important in treating lignocellulosic-rich biomass such as sugarcane bagasse. The lignocellulosic structure is strong, and the proportion of crystals is high, complicating the fermentation process. Still, it needs to be converted to a more amorphous structure for easy access to fermenting enzymes. The pretreatment process is carried out with alkaline solvents and microwaves in this study. The process begins by standardizing the size of the bagasse powder used. Sugarcane bagasse powder and NaOH alkaline solvent were mixed in a three-necked round-bottom flask. The reactor used in this study was a modified domestic microwave equipped with a temperature controller and condenser. The results showed that this modification was significant to reduce the weight of the residual solid product compared to the initial weight of the raw material. Process variables such as reaction time and solvent concentration significantly affect the cellulose content of solid products. However, hemicellulose content showed different results. The results of the XRD analysis showed that the crystallization index of the effect decreased with increasing pretreatment time. Pretreatment with microwaves and alkaline solvents was successful with satisfactory structural changes in the cellulosic solid.
Economical Analysis of 3GT Traditional Fishing Vessels in The Waters of Bengkalis Island Budhi Santoso; Jamal Jamal
Jurnal IPTEK Vol 25, No 2 (2021)
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2021.v25i2.257

Abstract

Bengkalis Island is the island of the capital city of Bengkalis regency, Riau province. Bengkalis Island is surrounded by the ocean so that the people who are on the edge of the coast mostly work as fishermen. Fishing boats in Bengkalis Island reach more than 2000 units. The limitations of fishing make it fishermen more difficult to get more income. There are a lot of efforts made by fishermen to improve these results including increasing engine power/speed of the ship and also changing fishing gear. To change this means increasing the operational costs of ships. For this reason, economic analysis needs to be calculated. In this study fishing boats are divided into 6 models, 3 models are distinguished based on the driving machine, namely 12 PK, 16 PK, and 24 PK while the other 3 models are distinguished based on the fishing gear, namely tansi net, kurau net, and longline. Analysis using the Net Present Value (NPV) method is knowing the model of the ship that returns the fastest capital and has the biggest advantage. The largest Net Present Value (NPV) is in Model 3 or 4 with NPV of Rp 307,091,520 and Internal Rate of Return (IRR) of 608.4%, namely yapal vessels that have 24 PK engine power and use tansi fishing gear
Soil Improvement Planning Combination of Preloading and Stone Column (Case Study) in Sidorukun District, Gresik, Jawa Timur Dewi Kusumaningrum; Gati Sri Utami; Johan Catur Atmaja
Jurnal IPTEK Vol 25, No 2 (2021)
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2021.v25i2.2128

Abstract

The subgrade is the essential part of the construction process, such as access to factories, to develop industrial factory in areas to be developed, one of which in the Gresik area. Not all construction site has met the requirement. Hence, need soil improvement with a combination of preload and stone column. The soil parameters show the results of field and laboratory tests that the area has a small value NSPT with a thickness of the soft bottom layer up to a depth of 20 meters. This research is planned the initial height (Hinitial) to have stability analysis of un-reinforcement embankment, the diameter, and the distance from the stone column with the Xstab program. The results of the calculations carried out for the construction height of the embankment (Hfinal) 3.50 meters, then the first dam (HInitial) of 4.60 m is required. The tilt stabilization is obtained (MR = 168.7 tonm), wherein The Radius of the Slope area is 11.62 meters and the Safety Factor (SF = 0.881), where there is a possibility to slide. Planning preload with a stone column with a diameter of 1.00 meters needs to be combined, a distance of 1.50 meters installed in the subgrade.
Design of Preventive Maintenance System for A Product Design Lab using Reliability Centered Maintenance (RCM) Methodology Bintang Rachel Aprilia Marpaung; Yosef Manik; Benedikta Anna Haulian Siboro
Jurnal IPTEK Vol 25, No 2 (2021)
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2021.v25i2.2369

Abstract

The product design and innovation laboratory, which is still relatively new, does not yet have a maintenance model to anticipate damages that may occur in the future. The purpose of this research is to build preventive maintenance to anticipate unwanted events such as sudden damage and Standard Operational Procedure (SOP) for laboratory facilities. The method used is Reliability Centered Maintenance (RCM) using EasyFit 5.5 software, obtained a repair schedule with minimum downtime. The results of the Reliability Centered Maintenance (RCM) method obtained maintenance recommendations in the form of Condition Directed (CD) on 14 components that might damage the product design and innovation laboratory facilities, Finding Failure (FF) on 8 components that might damage the design laboratory facilities. products and innovations and Time Directed (TD) on 5 components that may cause damage to product design and innovation laboratory facilities, and also Based on the results of preventive maintenance built, there is a Standard Operational Procedure (SOP) which includes the use of laboratory facilities following work instructions for the use of equipment, use of facilities the laboratory follows the work instructions for use, all validation results must be stored in the form of records in the form

Page 13 of 40 | Total Record : 399

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