In palm oil companies in carrying out the production process, there are still potential hazards in the work area such as at the sterilizer station, thresser station, press station, clarification station and other stations. The method used in solving these problems is the HIRARC method, which aims to reduce the increased risk and create a good work environment. Based on the risk assessment that has been carried out by the author, there are four risk level categories, namely extreme risk, moderate risk, high risk and low risk. At an extreme risk, one of which is broken bones, which can take lives. At moderate risk, one of them is hitting the head on the floor. While at high risk, namely fractures, and sprains. Lastly, the low risk is one of sprains. Risk assessment is given a level in each risk category so that the most dangerous risk is obtained, namely the sterilizer gets level 15, thresser gets level 6, pressing gets level 8, while clarification gets the lowest level, namely 3. Risk control is carried out by providing risk mitigation such as wear PPE, apply SOPs, clean the work area.
Increased demand for medical materials, triggering research into alternativemedical materials. Alternative materials should have the same characteristics for the patient's body. Sericin is a protein that has biocompatible, biodegradable and other important properties. Sericin is widely used in biomedical applications, it is thought that sericin is a promising natural resource as an alternative medical material. This study analyzed pore diameter in sericin-bioplastic biocomposites by Taguchi method. Bioplastics of 3 variations of tapioca starch were 16 g, 14 g, and 10 g, mixed 80 ml of aquades and 6 ml of glycerin. Sericin was determined 0.03%, 0.1%, and 0.3% by weight of tapioca starch. The biocomposite undergoes freeze drying process and is frozen at -25oC, -45oC, and -80oC for one day. SEM test to see pore diameter and biocomposite structure. Optimal analysis was performed for optimal combinations of sericin-bioplastic biocomposites. The SEM results showed pore diameters qualified for regeneration of skin tissue on freezers C -C, F, and I -25oC biocomposites of 41.94 μm, 33.416 μm and 32.743 μm respectively. Calculation of average response and maximum SNR at 16 g tapioca starch, 0.03% sericin and -25oC temperature. The predicted and confidence interval values for averages are large from 11,656 μm and small from 54,602 μm, SNR is large from 31,940 μm and small from 33,642 μm. The optimal experimental conditions for confirmation of large pore diameter for averages were large from 32.342 μm and small from 34.206 μm, large SNR of 32.342 μm and small from 34.206 μm.Keywords: Composition optimization, alternative medical materials, sericin- bioplastic biocomposites, Taguchi Methods, SEM
Intisari - Perencanaan dan pengendalian waktu proyek merupakan bagian dari manajemen proyek konstruksi secara keseluruhan dimana usaha yang sistematis untuk menentukan standar yang sesuai dengan sasaran perencanaan, merancang sistem informasi, membandingkan pelaksanaan dengan standar menganalisis kemungkinan adanya penyimpangan. PT Wirataco Mitra Mulya merupakan salah satu perusahaan yang bergerak dibidang konstruksi infrastruktur pengaspalan, pembangunan jalan dan jembatan yang bertempat di Kabupaten Aceh Barat. Masalah yang sering dihadapi dalam proyek pembangunan irigasi tahap II adalah terjadinya waste pada proyek seperti menunggu material yang diakibatkan karena keterlambatan pengiriman dari pemasok, menunggu turunnya dana karena pengajuan dana belum disetujui, metode kerja yang tidak baik sehingga menyebabkan material yang menumpuk, peralatan tidak memadai dikarenakan peralatan tidak berfungsi maksimal yang disebabkan kurangnya perawatan dan jadwal perawatan diabaikan, kualitas pekerjaan kurang baik disebabkan karena cuaca tidak mendukung pelaksanaan pekerjaan. Tujuan penelitian ini yaitu menentukan jalur kritis pada jaringan kerja pengerjaan proyek pembanguan irigasi Lhok Guci tahap II, menentukan indikator pengawasan konsumsi buffer akibat potensi timbulnya waste dan menentukan perbandingan waktu dan biaya perencanaan penjadwalan sebelum dan sesudah penerapan metode Critical Chain Project Management. Hasil penelitian menunjukan bahwa kegiatan kritis pada proyek pembangunan Irigasi Lhok Guci tahap II yaitu pekerjaan Mob/Demob Dump Truck, Mob/Demob Vibro Roller, Mob/Demob Bulldozer, Mob/Demob Sheet Foot Roller, Pembersihan Lapangan/Clearing and Grubbing, Galian Tanah (MP), Galian Tanah (ALB), Timbunan Tanah Didatangkan, diratakan, dipadatkan (ALB), Pengadaan dan Peasangan Geotextile-Geogrid Komposit dan Urungan Sirtu. Indikator pengawasan konsumsi buffer akibat potensi timbulnya waste akan berujung pada penggunaan durasi project buffer. Indikator zona pemakaian buffer yang diperoleh. Pihak pelaksana harus melakukan perencanaan tindakan pencegahan jika buffer yang terkonsumsi pada kurun waktu 15-28 hari dan segera melakukan tindakan jika buffer yang terkonsumsi pada kurun waktu 29-42 hari dan menjadikan akar permasalahan akibat potensi timbulnya waste sebagai pertimbangan dalam penentuan tindakan pencegahan terhadap konsumsi buffer dan berdasarkan penerapan critical chain project management diperoleh project buffer berdurasi 42 hari dengan kurun waktu penjadwalan proyek Irigasi Lhok Guci tahap II yaitu 409 hari menjadi 367 hari tanpa konsumsi buffer dengan pendanaan proyek sebesar Rp. 23,405,029,699belum termasuk PPN10% dan penghematan biaya tenaga kerja sebesar Rp. 124.223.914.72 tanpa konsumsi buffer. Abstract - Planning and controlling project time is part of the overall construction project management where a systematic effort to determine standards in accordance with planning objectives, designing information systems, comparing implementation with standards analyze possible deviations. PT Wirataco Mitra Mulya is a company engaged in the construction of asphalting infrastructure, road and bridge construction located in West Aceh Regency. Problems that are often faced in Phase II irrigation development projects are the occurrence of waste in projects such as waiting for materials caused by late delivery from suppliers, waiting for funds to decrease because the submission of funds has not been approved, poor working methods that cause material to accumulate, equipment is inadequate due to equipment is not functioning optimally due to lack of maintenance and neglected maintenance schedules, poor quality of work due to weather does not support the implementation of work. The purpose of this research is to determine the critical path in the work network for the second phase of the Lhok Guci irrigation development project, to determine indicators of monitoring buffer consumption due to the potential for waste generation and to determine the ratio of time and costs of scheduling planning before and after the application of the Critical Chain Project Management method. The results showed that the critical activities in the second phase of the Lhok Guci irrigation development project were the work of the Mob/Demob Dump Truck, Mob/Demob Vibro Roller, Mob/Demob Bulldozer, Mob/Demob Sheet Foot Roller, Field Cleaning/Clearing and Grubbing, Soil Excavation ( MP), Soil Excavation (ALB), Landfill Imported, leveled, compacted (ALB), Procurement and Installation of Composite Geotextile-Geogrids and Sirtu Storage. The indicator for monitoring buffer consumption due to the potential for waste will lead to the use of project buffer duration. Obtained buffer usage zone indicator. The implementer must plan preventive actions if the buffers are consumed within 15-28 days and immediately take action if the buffers are consumed within the period of 29-42 days and make the root of the problem due to the potential for waste as a consideration in determining preventive measures against buffer consumption and based on the application of critical chain project management, a project buffer of 42 days is obtained with a period of scheduling the Lhok Guci Phase Two Irrigation project, namely 409 days to 367 days without buffer consumption with project funding of Rp. 23,405,029,699 excluding 10% VAT and labor cost savings of Rp. 124,223,914.72 without buffer consumption.
Operator workload in a company can be grouped into low or high workloads. Operators feel the workload is low if each activity is carried out easily and safely so that it does not exceed the operator's capabilities. Meanwhile, a heavy workload is felt when the work exceeds the operator's ability limit which can cause fatigue and work accidents. PT Ujong Neubok Dalam is a company that produces Crude Palm Oil (CPO) and kernels. In the production section, there are workstations such as loading rump, sterilization, digester and press, clarification, and others. The production target is 270 tons/day of Fresh Fruit Bunches (FFB) which are produced into CPO. The demand for production targets resulted in complaints and discomfort felt by the production department operator. The purpose of this study was to analyze the workload and workload indicators of production operators using the NASA-TLX method. From the calculation results of 17 operators, the mental workload that is classified as high is felt by 7 operators with an average Weighted Workload (WWL) of 81-89, while 10 operators are classified as high mental workloads with a WWL value of 78-67. Of the 6 NASA-TLX indicators, 3 indicators have the highest mental workload values, namely physical needs (KF), effort (U), and work performance (PK) with details of the average value of 248 - 260.
Light Fire Extinguishers (APAR) play a very important role in a company, this aims to prevent and overcome in the event of a fire. The development of technology for equipment inspection has now begun to use digital methods including using android applications and barcodes to facilitate the fire extinguisher inspection process. In this study, it uses the waterfall method, which is a technical model in software development, where a project will be detailed sequentially. Based on the results of research, a method of monitoring the fire extinguisher using androite-based barcodes that can be accessed through the internet network anytime and anywhere. This barcode-based monitoring method can minimize officer errors in writing data on the results of checking the fire extinguisher, searching for data on the results of the fire extinguisher check and can be viewed and accessed easily. Barcodes have been affixed to each fire extinguisher and the barcode has been designed complete with a description of the state of the fire extinguisher in it, including the type of fire extinguisher, weight, name of the officer, expiret, type. It can be concluded by using this method the quality of the resulting system will be better because its implementation is carried out gradually or sequentially.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.