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All Journal Vokasi: Jurnal Riset Akuntansi 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 Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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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.
Perbandingan Perhitungan Kalkulasi Biaya Menggunakan Metode Traditional Costing dan Activity Based Costing Rina Sandora; Abdul Halik; Siti Mujanah
Vokasi : Jurnal Riset Akuntansi Vol. 15 No. 1 (2026): Vokasi: Jurnal Riset Akuntansi
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/vjra.v15i1.114395

Abstract

The current high level of market competition is often not accompanied by changes in cost accounting systems for calculating product costs. The use of traditional cost accounting systems is starting to be abandoned, especially in allocating overhead costs to products. This study aims to accurately determine cost calculations by comparing the results of cost calculations using traditional cost accounting systems with the Activity-Based Costing (ABC) system. The results of this study indicate that cost calculations with the Activity Based Costing (ABC) system are more accurate than the traditional cost accounting system. The cost calculation using the traditional system obtained a cost per unit for product type A of Rp. 39.238 and product type B of Rp. 29.013. The results of Activity Based Costing (ABC) obtained a cost per unit for product type A of Rp. 37.034 and product type B of Rp. 31.417.
Identifikasi Risiko dalam Beberapa Kategori di Pendidikan Vokasi Rina Sandora; Hwihanus
Vokasi : Jurnal Riset Akuntansi Vol. 15 No. 1 (2026): Vokasi: Jurnal Riset Akuntansi
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/vjra.v15i1.114724

Abstract

Abstract Economic changes, educational policies, and the changing needs of educators along with technological advances and global demands make educational institutions face challenges in creating flexible and responsive educational strategies to improve the quality of education. This study aims to provide an in-depth understanding of the risks for vocational education in achieving its vision and mission. These challenges can be addressed by implementing risk management in several risk categories. The organization identifies the impact criteria and likelihood of risks on a scale of 1-5, conducts risk input, obtains risk matrices and priorities, creates a risk appetite report, conducts risk management actions, and reports on risk monitoring. The results of the initial risk level with residual risk indicate a decrease in the risk level. The conclusion is that the implementation of risk management can control existing risks due to the mitigation carried out. There are three high risks after risk management becomes moderate risk, low risk and enters the risk appetite and risk tolerance categories.  
RISK ASSESSMENT ON INSTALL AND DISMANTLE SCAFFOLDING USING TASK RISK ASSESSMENT METHOD Azura, Talitha Cornelia; Ashari, Moch. Luqman; Sandora, Rina
Tibuana Vol 2 No 02 (2019): Tibuana
Publisher : UNIPA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (48.598 KB) | DOI: 10.36456/tibuana.2.02.1940.9-13

Abstract

Accidents can occur anytime and anywhere such as accidents that occur at work at height. This study aims to identify and analyze potential hazards in the install and dismantle scaffolding work using TRA (Task Risk Assessment) method. The results of the risk assessment using TRA on this work obtained four job description with 2 jobs at low risk, namely initial risk of 4 and after controlling for residual risk of 2. For install and dismantle scaffolding show that medium risk was obtained with an initial risk of 12 and after controlling, the residual risk becomes 9.
Learning Achievement Analysis of Male and Female Students at the PPNS and Polmed to Meet the Global Challenges Sandora, Rina; Syahdewa, Budi Indra
Tibuana Vol 3 No 01 (2020): Tibuana Vol.3 No.1 Tahun 2020
Publisher : UNIPA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/tibuana.3.01.2198.30-36

Abstract

Industry revolution 4.0 era provides opportunities as well as threats for the students and alumni graduated from vocational education. Man roles are gradually taken by automatic machines. Consequently, unemployment is increasing. This certainly will contribute to the either local or national problems. Therefore, vocational education students have to intensify their learning achievements. This study discusses the learning achievements of the male and female students at the Shipbuiding Institute of Polytechnic Surabaya (PPNS) and Medan State Polytechnic (Polmed). The analysis of learning achievements in this study used the documentation data of the GPA in scale 4, taking the whole population either male (M) or female (F) in the academic year 2015/2016, 2016/2017, and 2017/2018. In the last three years, total PPNS’s graduates are 1959 (1418 male, 541 female) and Polmed’s are 5938 (2821 male, 3117 female). Based on the descriptive quantitative analysis, the average of learning achievements at PPNS shows that accumulated GPA of the female students’ is 3.39 > male students’ 3.28. While at Polmed, it is GPA of female students’ is 3.27 > male students’ 3.14. Total of students is still gender imbalance referring to the graduates data in year 2018 for PPNS’ Welding Study Program in which having only two female students with average GPA 3.41 and 53 students with average GPA 3.15, meanwhile at Polmed, the total students with largest gap in gender occured at the Mechanical Engineering Study Program with total of male students 240 (average GPA 3.10) and female students only 11 (average GPA 3.20). This result indicates that in these two vocational educational institutions, e.i. PPNS and Polmed, the learning achievement of female students is betterand more competitivable than the other
Hazard Identification and Risk Assessment with Recommended Alternative Solutions Using the Benefit Cost Analysis Method Sandora, Rina; Putra, Fani Sandy; Anindita, Galih
Tibuana Vol 4 No 02 (2021): Tibuana
Publisher : UNIPA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/tibuana.4.02.4013.120-124

Abstract

Determination of hazard identification and risk assessment on the company can not be separated from the calculation of the cost budget. The aim is to provide recommendations and calculate the profit rate using the Benefit Cost Analysis (BCA) method so that the company will more easily determine the most appropriate and needed alternative in the company. From the incremental analysis calculation, an alternative solution and value obtained from BCA are gas detector H2S B / C ratio 1.14, crane certification B / C ratio 3.66, welding helmet B / C ratio value 5.53, wire rope B / C ratio value of 5.19, O2 detector value of B / C ratio 6.11, small handtruck value of B / C ratio 18.1, fire dry chemical powder B / C ratio value of 22.27, N2 gas detector value of ratio B / C 1.53.
Influence of Safety Management Practices on Safety Performance with Safety Knowledge as Intervening Variable in Safety Representative Sandora, Rina; Kurniasih, Dewi; Putri, Gilang Armanda
Tibuana Vol 6 No 1 (2023): Tibuana
Publisher : UNIPA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/tibuana.6.1.6496.38-43

Abstract

Phosphoric acid production companies have a lot of potential hazards that can lead to work accidents. The preventive actions taken by the company is by establishing an SHE (Safety, Health and Environment) division and appointing a safety representative. Based on the results of the safety patrol record, it turns out that there are still a lot of unsafe actions and unsafe conditions that occur and the value of the frequency rate in 2021 is worth 0.23. This study aims to determine the influence of safety management practices on safety performance mediated by the safety knowledge on 40 safety representatives. The method used to analyze the relationship between variables is PLS-SEM (Partial Least Square – Structural Equation Modeling). The results showed that there was a positive and significant influence between safety management practices on safety performance with a p-value of 0.018. In addition, safety management practices also have a positive and significant impact on safety performance mediated by safety knowledge with a p-value of 0.004 and a VAF value of 49,59%. Recommendations that can be given are in the form of implementing safety training, installing safety signs in the workplace, updating and socializing standard operating procedures for work and implementing safety talk and safety briefing.
Co-Authors - Hwihanus Abdul Halik Adi Wirawan Husodo Amelia Laksmi Andani Devi Novitasari Anggrik Dwi Merari Anisya Kusumaningrum Azura, Talitha Cornelia Benedicta Dian Alfanda Benedita Dian Alfanda Budi Prasojo, Budi Budianto . Budiyanto, Ekky Nur Ceke Dwi Octa S.P. Dewi Kurniasih Dewi Kurniasih Diajeng Rizky Amelia Dianita Wardani Dioktyanto, Mudzakkir Ekky Nur Budiyanto Eko Julianto Endang Pudji P. Endang Pudji Purwanti Farizi Rachman Fitri Annisa Galih Anindita Kartika Agustin Nirmalasari Kartika Indira Putri Khoiriyah, Lilik Laras Gayuh Kartika Wulan Lestari, Rahandini Lukita Mahardhika, Pekik Maulidya, Syirva Megawati Fratiwi Mochamad Luqman Ashari Mochamad Yusuf Santoso Muhammad Fiky Izzulhaq Muhammad Syarif Hidayatullah, Muhammad Syarif Muhammat Junaidi Muzakky, Chezta Ahmad Niko Aditya Ni’matut Tamimah Novitasari, Andani Devi Pekik Mahardhika Primaningtyas, Widya Emilia Pusparani, Vena Rizky Putra, Fani Sandy Putri, Gilang Armanda 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 Siti Mujanah Sofia, Emy Sri Puji Lestari Sri Puji Lestari Syahdewa, Budi Indra Tarikh Azis Ramadani Thina Ardliana Tri Andi Setiawan Tridya, Dini Rosyadah Wismawati, Endah Yesica Novrita Devi