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All Journal Jurnal Teknik dan Manajemen Industri Journal of Engineering and Management in Industrial System Tibuana : Journal of Applied Industrial Engineering International Journal of Marine Engineering Innovation and Research JURNAL POLI-TEKNOLOGI Jurnal Pengabdian Masyarakat Nusantara Jurnal Cakrawala Maritim Jurnal Teknologi Maritim PROCEEDINGS CONFERENCE ON DESIGN AND MANUFACTURE AND ITS APPLICATION
Rina Sandora
Politeknik Perkapalan Negeri Surabaya
Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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Upaya Perbaikan Kualitas Menggunakan Metode Six Sigma untuk Mengurangi Jumlah Cacat Produk Head Travel Kit pada PT. Berlina Tbk Diajeng Rizky Amelia; Rina Sandora; Farizi Rachman
Proceedings Conference On Design Manufacture Engineering And Its Application Vol 4 No 1 (2020): Conference on Design and Manufacture and Its Aplication
Publisher : Proceedings Conference On Design Manufacture Engineering And Its Application

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Abstract

In packaging industries, PT. Berlina is enganged in the production of plastic packaging, especially in injection moulding departement based on September 2019 data, there is a product that has the largest percentage of defects namely head travel kit (9.1%). Bubble defect is the most dominant problem among other disability categories with a percentage of 57.9%. This study aims to know and identify the factors that cause bubble defect and determine alternative improvement policies that can reduce the rate of occurance of bubble defects of head travel kit product to implement. The method use in this study is Six Sigma which includes five stages of analysis, namely DMAIC (Define, Measure, Analyze, Improve, and Control). Each stage of DMAIC is done by carefully analyzing and maintaining the process. The results of this study indicate that the factors causing bubble analyzed by FTA are speed injection parameters exorbitant, plastizing process less precise, back pressure parameter too low, and ventilation syste, less precise. There are plan of improvement effort that is varying the speed injection parameter, extend the holding time parameter, extend the back pressure parameter, and cleaning the venting area. While the effort improvement that has be done is verying the speed injection parameter with a range of 15 mm/s untul 25 mm/s and extend the holding time parameter to 6 secon.The result of effort improvement are showed the decrease of defects percentage between before and after improvement that is from 26 % to 10 % and obtained 3,145 sigma, it means more and better than from previous sigma value, it is 2,849 sigma.
Optimasi Penjadwalan Produksi Injection Mould Base Frypan Handle Menggunakan Metode Algoritma Genetika Fitri Annisa; Rina Sandora; Thina Ardliana
Proceedings Conference On Design Manufacture Engineering And Its Application Vol 5 No 1 (2021): Conference on Design and Manufacture and Its Aplication
Publisher : Proceedings Conference On Design Manufacture Engineering And Its Application

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Abstract - Scheduling is an important aspect in the company to manage the length of production process time so as not to experience delays. Moulding Company is a manufacturing industry company with a production flow of job shop. The company's scheduling system on the manufacture of Injection Mould Base Frypan Handle is delayed where there is a non-achievable duration between actual production and planned production, to be able to obtain a solution to this problem, the proposed method, namely the Genetic Algorithm. The Genetic Algorithm method was chosen because this method does not have special criteria found in other heuristic algorithms, so the computation time is relatively shorter. Calculations on the Genetic Algorithm method using Microsoft Excel and MATLAB R2016a media. The calculation of the Genetic Algorithm method produces the optimal job operation flow, namely : 6-17-7-21-15-24-23-14-1-8-10-22-18-11-20-2-13-16-5-19-4-12-9-3. In addition, costs of Genetic Algorithm method decreased by 44% or Rp. 3,401,891, - more economical than company scheduling.
IDENTIFIKASI WASTE PADA PROSES PRODUKSI MOULD INHALER BARREL MENGGUNAKAN METODE LEAN SIX SIGMA PADA DIVISI MANUFACTURING PT BERLINA TBK Ceke Dwi Octa S.P.; Endang Pudji P.; Rina Sandora
Proceedings Conference On Design Manufacture Engineering And Its Application Vol 4 No 1 (2020): Conference on Design and Manufacture and Its Aplication
Publisher : Proceedings Conference On Design Manufacture Engineering And Its Application

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Keterlambatan adalah suatu permasalahan yang sering terjadi di dunia industri. Keterlambatan yang dimaksud dalam hal ini yaitu keterlambatan terselesaikannya suatu proses produksi sesuai dengan tanggal deadline yang telah ditentukan dan disepakati kedua belah pihak. Dalam penelitian ini metode yang digunakan untuk mengatasi masalah keterlambatan yaitu Metode Lean Six Sigma. Tujuan dari penelitian ini yaitu mengatasi masalah keterlambatan dengan mengidentifikasi serta menganalisa jenis – jenis pemborosan atau waste yang terjadi selama proses produksi berlangsung. Adapun yang akan dijadikan objek penelitian ini adalah mould inhaler barrel. Output yang akan dihasilkan dari penelitian ini yaitu dengan memberikan usulan perbaikan terhadap perusahaan sebagai pertimbangan dalam menentukan kebijakan untuk mengatasi permasalahan yang berkaitan dengan keterlambatan yang terjadi pada saat proses produksi berlangsung. Dari hasil penelitan yang dilakukan dengan menggunakan beberapa cara untuk mengidentifikasi waste didapatkan hasil bahwa waste waiting adalah waste kritis dalam proses produksi mould inhaler barrel. Dibuktikan dengan hasil pembuatan diagram VSM yang diketahui terdapat kegiatan menunggu sebelum ke proses Milling, kemudian dengan pengelompokkan VA dan NVA didapatkan hasil NVA sebesar 27,24% dengan total waktu sebanyak 947,13 menit dalam satu kali proses produksi sedangkan dalam metode pembobotan kuesioner diketahui yang menjadi peringkat pertama yaitu waste waiting. Dengan menggunakan metode fishbone diagram didapatkan 5 faktor penyebab terjadinya waste waiting yaitu faktor manusia, faktor metode kerja, faktor mesin, faktor bahan baku, dan faktor lingkungan kerja. Usulan perbaikan yang didapatkan dari penelitian ini salah satunya membuat kontrak kerja mengenai keterlambatan pengiriman raw material ke perusahaan dari suplier, menjadi usulan perbaikan yang berdasarkan perhitungan peringkat RPN merupakan permasalahan yang harus segera dilakukan perbaikan.
Optimalisasi dan Penyelesaian Job Shop Scheduling Problem dengan Metode Algoritma Genetik (Studi Kasus Injection Mould Base Tumbler Upper Cap di PT. Berlina Tbk Pandaan, Pasuruan) Niko Aditya; Rina Sandora; Endang Pudji Purwanti
Proceedings Conference On Design Manufacture Engineering And Its Application Vol 4 No 1 (2020): Conference on Design and Manufacture and Its Aplication
Publisher : Proceedings Conference On Design Manufacture Engineering And Its Application

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PT. Berlina Tbk Pandaan is a plastic packaging and mold maker company with a make to order production system especially at the Mold Shop Department with job shop production flow. From the scheduling system, production delays often occur. Injection Mold Base for Tumbler Upper Cap products was chosen as the object of research with a delay of 7 weeks. The purpose of this study is to determine the sequence of job operations flow by minimizing tardiness and makespan using the Genetic Algorithm method so as to produce optimum scheduling. The analysis of this study involved 37 jobs with 24 different machines. Calculations on the Genetic Algorithm method using Microsoft Excel and MATLAB R2012b media. From the calculation of the Genetic Algorithm method produces tardiness value of 0 hours, makespan 134.125 hours, and the highest fitness value of 2.3126. While scheduling the company produces a value of tardiness of 589.8750 hours and makespan of 195.125 hours. Then this method is able to minimize 100% tardiness and 31% makespan of company scheduling. While the operating flow of the resulting job is: 25-14-11-26-6-18-23-36-31-5-4-1-13-33- 8-35-32-12-34-7-3- 28-17-15-29-2-22-27-9-30-19-21-37-16-24-20-10.
Analisis Penjadwalan Proyek Dengan Penambahan Manpower dan Over Time Menggunakan Metode Time Cost Trade Off Sri Puji Lestari; Widya Emilia Primaningtyas; Rina Sandora
Proceedings Conference On Design Manufacture Engineering And Its Application Vol 7 No 1 (2023): Conference On Design And Manufacture Its Application
Publisher : Proceedings Conference On Design Manufacture Engineering And Its Application

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A construction company in Karangpilang received a Pressure Vessel project. This project is delayed from the predetermined date so that a fine of 0.2% is imposed every day. So it is necessary to analyze project scheduling in order to get the maximum time and cost in this project. The methods used in this research are Time Cost Trade Off (TCTO), Precedence Diagram Method (PDM) and crashing. Acceleration is carried out on critical trajectories namely Marking/Catting, Rolling, Fit-Up, Welding, NDT, Primary Blasting and Top Coat. This study uses alternatives to increase over time and additional manpower. In this study, the maximum time and cost results were obtained with an alternative of 25% additional manpower. The resulting accelerated duration is 51 days faster than the actual duration, with costs incurred of Rp. 199,616,473, -, resulting in a decrease of 70% from the actual duration cost of Rp. 286,961,745, -. S curve analysis shows that the accelerated duration can be completed faster than the actual duration because the project can be completed on December 27, 2021. Where the accelerated duration is closer to the planned duration, namely November 26, 2021.
Analisis Tegangan Sistem Perpipaan Cold Reheat Boiler Berkapasitas 2300 Ton/Jam Pada Kondisi Tidak Operasi Mahardhika, Pekik; Adi Wirawan Husodo; Ekky Nur Budiyanto; Benedicta Dian Alfanda; Rina Sandora
Jurnal Teknologi Maritim Vol. 7 No. 2 (2024): Jurnal Teknologi Maritim
Publisher : Pusat Penelitian dan Pengabdian Masyarakat Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35991/jtm.v7i2.34

Abstract

Salah satu pembangkit listrik bertenaga uap terbesar di Jawa Timur menggunakan 3 (tiga) unit boiler dengan kapasitas masing-masing sebesar 2300 ton/h untuk mendukung fungsinya. Pada akhir tahun 2023 salah satu unit boiler (Unit-7) dilakukan shut-down untuk melakukan kegiatan perawatan. Perawatan pada sistem perpipaan dilakukan pengecekan terhadap kemungkinan pengurangan ketebalan pipa dan pengecekan terhadap posisi elevasi pipa ketika kondisi tidak beroperasi (cold condition). Salah satu sistem perpipaan pada unit 7 adalah Cold Reheat Pipe (CRP). Analisa tegangan pada sistem perpipaan perlu dilakukan dan menjadi satu kesatuan kegiatan proses pengecekan sistem perpipaan berguna untuk mengetahui apakah dalam kondisi tanpa operasi (cold condition) masih memenuhi kriteria ASME B31.1 (dikatakan aman) atau tidak. Tahapan penelitian ini meliputi pemodelan & simulasi tegangan pipa menggunakan stress analysis software kondisi tanpa operasi (cold condition) dan disesuaikan dengan kriteria penerimaan ASME B31.1. Dari hasil simulasi menunjukkan bahwa seluruh tegangan yang terjadi pada sistem perpipaan CRP BS 130 dan CRP BS 131 lebih rendah dari tegangan izin. Disimpulkan bahwa sistem perpipaan dalam kondisi tidak beroperasi aman bahkan pada ketebalan pipa yang ada.
Sosialisasi dan Pemasangan Alat Filtrasi untuk Meningkatkan Kualitas Air Bersih di Dusun Puripan, Lamongan Rahmahwati, Intan; Muzakky, Chezta Ahmad; Izzulhaq, Muhammad Fiky; Khoiriyah, Lilik; Reza, Muhammad Ali; Pusparani, Vena Rizky; Sofia, Emy; Wardani, Dianita; Sandora, Rina; Dioktyanto, Mudzakkir; Fratiwi, Megawati; Suryadi, Rudy
Jurnal Pengabdian Masyarakat Nusantara Vol 5 No 1 (2025): Desember 2025
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/dimastara.v5i1.27490

Abstract

Ketersediaan air bersih merupakan masalah krusial di Dusun Puripan. Kondisi geografis dusun pada dataran rendah menyebabkan sumber air tanah sulit didapatkan. Akibatnya, masyarakat bergantung pada air hujan yang ditampung di Waduk. Air Waduk ini memiliki kualitas yang buruk, yaitu keruh dan berbau, sehingga tidak memenuhi standar kesehatan dan kebersihan yang ditetapkan oleh Peraturan Menteri Kesehatan No. 32 Tahun 2017. Program Pengabdian Masyarakat ini bertujuan untuk meningkatkan kualitas air dari Waduk agar layak digunakan untuk kebutuhan sehari-hari. Metode yang diterapkan meliputi tiga tahap. Pertama, Persiapan, berupa survei lokasi dan kualitas air serta penentuan titik pemasangan alat. Kedua, Sosialisasi, untuk memberikan wawasan tentang pentingnya air bersih sesuai standar. Ketiga, Pemasangan Alat Filtrasi PVDF Membrane with Lining 5000 L pada sistem perpipaan, yang ditempatkan di antara pompa dan tandon. Hasil kegiatan menunjukkan antusiasme tinggi dari warga yang didorong oleh tingginya kasus penyakit akibat air kotor. Pemasangan alat filtrasi berbasis teknologi PVDF Ultrafiltrasi (UF) Membrane berhasil menyaring air Waduk yang keruh menjadi air bersih sebelum didistribusikan ke rumah-rumah. Program ini berhasil terlaksana dengan sukses, meskipun terdapat kendala akses geografis. Diharapkan program ini dapat meningkatkan penggunaan air bersih, mengurangi risiko penyakit, dan menjadi model solusi bagi daerah lain yang menghadapi masalah air serupa.
Application Of the Finite Element Method for Evaluating the Stress Due To Operating Load In High Energy Piping System Pekik Mahardhika; Adi Wirawan Husodo; Ekky Nur Budiyanto; Benedita Dian Alfanda; Rina Sandora
International Journal of Marine Engineering Innovation and Research Vol. 10 No. 2 (2025)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v10i2.6379

Abstract

The stress value of the piping system will change during operating conditions. The stress value affects the integrity of the piping system. Excessive stress will cause deformation and damage to the piping system. The operating condition parameters of the piping system are temperature and pressure. The High-Energy Piping (HEP) system is subjected to high pressures and temperatures, which can cause significant stresses on the piping components. So stress analysis needs to be carried out to ensure that the piping system has strength and flexibility. The Cold Reheat Pipe (CRP) steam line is one of the High-Energy Piping Systems in this steam power plant. CRP consists of CRP BS 130 and CRP BS 131. This paper is about evaluating the stress due to operating loads in 2024 (temperature, pressure, and remaining thickness) for steam lines on the high-energy piping system using the finite element method and refers to ASME B31.1. The output stress values in the piping system in this paper consist of stress due to sustained load, stress due to thermal load, and hoop stress. The CRP BS 130 modeling results show the maximum stress due to sustained load (166.6 kg/cm2), the maximum stress due to the thermal load (112.8 kg/cm2), and the maximum hoop stress (855.6 kg/cm2). The CRP BS 131 modeling results show the maximum stress due to sustained load (974.2 kg/cm2), the maximum stress due to the thermal load (123.5 kg/cm2), and the maximum hoop stress (938.9 kg/cm2). The results of the stress evaluation due to the operating load were still below the allowable stress and are still permitted by the ASME B31.1 Code.
PROJECT SCHEDULING ANALYSIS USING PRECEDENCE DIAGRAM METHOD (PDM) Novitasari, Andani Devi; Sandora, Rina; Lestari, Rahandini Lukita
JEMIS (Journal of Engineering & Management in Industrial System) Vol. 6 No. 1 (2018)
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jemis.2018.006.01.5

Abstract

Many obstacles that affect the completion of the project late, like: weather, late general plan approval, late material arrival, less skills and others. The Precedence Diagram Method is the method used to create network planning especially project scheduling. This research will examine how to plan the proper project scheduling of Pressure Vessel project of PT Wika Technip which is done by PT. Barata Indonesia by using PDM.The results obtained from the cost calculation at 252 days of project life have total project cost of Rp.6.131.093.885,00 and at project age 243 days total project cost is Rp.6.236.994.056,00. In this case it is known that there is an increase in total cost of Rp.105.900.171,00 and the time difference of 9 days when the acceleration is done on the project duration from 252 days to 243 days.
Co-Authors Adi Wirawan Husodo Amelia Laksmi Andani Devi Novitasari Anggrik Dwi Merari Anisya Kusumaningrum Azura, Talitha Cornelia Benedicta Dian Alfanda Benedita Dian Alfanda Budi Indra Syahdewa Budi Prasojo, Budi Budianto . Budiyanto, Ekky Nur Ceke Dwi Octa S.P. Dewi Kurniasih Diajeng Rizky Amelia Dianita Wardani Dioktyanto, Mudzakkir Ekky Nur Budiyanto Eko Julianto Endang Pudji P. Endang Pudji Purwanti Fani Sandy Putra Farizi Rachman Fitri Annisa Fratiwi, Megawati Galih Anindita Gilang Armanda Putri Kartika Agustin Nirmalasari Kartika Indira Putri Khoiriyah, Lilik Laras Gayuh Kartika Wulan Lestari, Rahandini Lukita Mahardhika, Pekik Mochamad Luqman Ashari Mochamad Yusuf Santoso Muhammad Fiky Izzulhaq Muhammat Junaidi Muzakky, Chezta Ahmad Niko Aditya Novitasari, Andani Devi Pekik Mahardhika Primaningtyas, Widya Emilia Pusparani, Vena Rizky Putra, Fani Sandy R.A. Norromadani Y RA Norromadani Yuniati RA. Norromadani Yuniati Rahandini Lukita Lestari Rahmahwati, Intan Regita Palupi Renanda Nia Rachmadita Renanda Nia Rachmadita Reza, Muhammad Ali Rinda Fitriana Rudy Suryadi, Rudy Sofia, Emy Sri Puji Lestari Sri Puji Lestari Syahdewa, Budi Indra Talitha Cornelia Azura Tamimah, Ni’ matut Tarikh Azis Ramadani Thina Ardliana Tri Andi Setiawan Wismawati, Endah Yesica Novrita Devi