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All Journal Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Jurnal Konversi Energi dan Manufaktur Indonesian Journal of Engagement, Community Services, Empowerment and Development (IJECSED) Jurnal Rekayasa Energi dan Mekanika Jurnal Pengabdian Masyarakat Creative Research in Engineering (CERIE) Public Health and Safety International Journal (PHASIJ) Engineering and Technology International Journal (EATIJ) AMMA : Jurnal Pengabdian Masyarakat JADI (Jurnal Teknik Industri)
Cahyo Wibowo
Universitas Mpu Tantular
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Dentistry Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Public Health Veterinary Other

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Analysis of Lead Time Reduction in Pre-Delivery Installation Process of Excavator Units at PT. XYZ Assembly Plant Dibyo Setiawan; Tubagus Syah Fatahillah Gelagah Wangi Bintaran; Apri Setiawan; Hanni Maksum Ardi; Herbert Hasudungan Siahaan; Cahyo Wibowo
Jurnal Konversi Energi dan Manufaktur Vol. 11 No. 1 (2026)
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JKEM.11.1.5

Abstract

The Pre-Delivery Installation (PDI) Department of PT. XYZ is tasked with carrying out the installation process of imported heavy equipment attachment units, including one of the leading excavator units. Obstacles that arise can affect installation productivity. The gap between the actual installation results of 78 units and the company's target of 156 units requires a solution or resolution to improve the process that can be implemented. Therefore, it is necessary to investigate the wait time associated with decreased productivity, which is the longest component of the installation process. This work has a purpose to analyze lead time of the excavator attachment unit installation process. The method is applied with a time study approach referring to data sheets and observations, then processing lead time data using pie charts, Pareto diagrams, and fishbone diagrams. Furthermore, we review the planning calendar, realization, and improvement engineering. Reduction is carried out by providing additional work personnel and procuring sanding machine tools to reduce the installation and critical time of the planning calendar. The realization condition for 562 minutes with the implementation of improvement engineering is reduced to 318 minutes. Thus, it can speed up implementation time of the excavator attachment in unit installation process to 224 minutes or 44%.
Model Desentralisasi Program Makan Bergizi Gratis (MBG) Berbasis Sekolah: Memangkas Rantai Pasok dan Mencegah Penyelewengan Cahyo Wibowo; Muhammad Muryanto; Saeful Rofi Romadhon
Jurnal Pengabdian Masyarakat - PIMAS Vol. 5 No. 3 (2026): Agustus
Publisher : LPPM Universitas Harapan Bangsa Purwokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35960/pimas.v5i3.2671

Abstract

The Free Nutritious Meals Program (MBG), launched in January 2025, is one of the national priority programs with a budget of Rp223 trillion in 2026. However, its centralized implementation through the Nutrition Fulfilment Service Units (SPPG) faces various serious systemic problems. By the end of 2025, there were more than 20,000 reported cases of food poisoning, two fatalities, as well as chronic distribution delays, substandard nutritional quality, targeting inaccuracies, and corrupt practices involving non-essential actors. This article aims to formulate a school-based MBG decentralization model with three main pillars: (1) the phased elimination of all SPPGs, (2) the direct disbursement of funds from the National Nutrition Agency (BGN) to schools without intermediaries, and (3) a ban on the involvement of non-essential institutions in the distribution chain. The methods used include a projected case study with comparative policy analysis and a systematic literature review of 30 indexed journals from the past 10 years. The proposed model channels funds directly from the BGN to school accounts; preparation, cooking, and distribution are carried out on school premises with the rotating involvement of parents; raw material suppliers are selected from local farmers/vendors through a rotation system; monitoring is conducted by both the school committee and parents; and meal portions are adjusted according to the actual number of students present. This model recommends the phased discontinuation of the SPPG over a 6-month period, as well as the closure of the entire distribution chain involving non-essential actors. The main recommendation is a limited pilot program in 20–30 non-urban schools as the basis for reforming the national MBG governance system
Evaluasi Kebijakan CNG Cylinder ISO 11439 pada Gas Transport Module: Perspektif Requalification, Keselamatan Teknis, dan Ekonomi Sirkular Cahyo Wibowo; M. Muryanto
Engineering and Technology International Journal Vol 8 No 02 (2026): Engineering and Technology International Journal (EATIJ)
Publisher : YCMM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55642/eatij.v8i02.1369

Abstract

Kebijakan pelarangan penggunaan tabung CNG (Compressed Natural Gas) berstandar ISO 11439 serta kebijakan pemusnahan (scrapping) silinder CNG yang telah mencapai batas waktu tertentu yang dikeluarkan oleh Direktorat Jenderal Minyak dan Gas Bumi Kementerian ESDM merupakan kebijakan yang perlu dievaluasi ulang karena belum sepenuhnya selaras dengan praktik standar internasional dan bukti ilmiah yang tersedia.. Dengan mengacu pada ISO 19078:2013 yang secara spesifik mengatur inspeksi dan requalification tabung CNG berstandar ISO 11439, serta UNECE Regulation No. 110 yang secara eksplisit mengatur periodic requalification setiap 48 bulan, serta praktik regulasi di negara-negara maju seperti Amerika Serikat (49 CFR Part 180) dan Brasil (INMETRO), artikel ini membuktikan bahwa kebijakan tersebut lahir dari adopsi standar yang tidak sinkron oleh pengambil kebijakan terhadap kerangka internasional yang mengatur siklus hidup tabung CNG.. Dengan mengacu pada ISO 19078:2013 yang secara spesifik mengatur inspeksi dan requalification tabung CNG berstandar ISO 11439, serta praktik regulasi di negara-negara maju seperti Amerika Serikat (49 CFR Part 180) dan Brasil (INMETRO), artikel ini membuktikan bahwa: (1) tabung CNG tidak wajib dimusnahkan berdasarkan usia kalender semata, melainkan menjalani perpanjangan umur berbasis kondisi (condition-based life extension); (2) ISO 19078 sendiri secara eksplisit menyatakan bahwa cakupannya adalah cylinder yang designed and manufactured according to ISO 11439, untuk penyimpanan CNG sebagai bahan bakar kendaraan bermotor; (3) kebijakan larangan dan pemusnahan massal bertentangan dengan prinsip ekonomi sirkular, menimbulkan kerugian ekonomi besar, serta tidak selaras dengan semangat regulasi Ketenagakerjaan tentang bejana tekan yang mengutamakan aspek keselamatan teknis sesuai spesifikasi standar tertentu. Artikel ini merekomendasikan pencabutan kebijakan tersebut dan pengadopsian pendekatan requalification berkala sebagaimana dipraktikkan secara global.
Optimization and Efficiency of Energy Conversion Technology Integration in Hygiene Systems Cahyo Wibowo; Herbert Hasudungan; Ojakma Sihar Panalili T; Dibyo Setiawan; Fathan Mubina Dewadi
Public Health and Safety International Journal Vol. 5 No. 01 (2025): Public Health and Safety International Journal (PHASIJ)
Publisher : YCMM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55642/phasij.v5i01.961

Abstract

The integration of energy conversion technologies in hygiene systems plays a crucial role in enhancing energy efficiency and reducing overall power consumption. This study explores various approaches to optimizing energy conversion within hygiene applications, including heat recovery systems, biogas utilization, and solar energy integration. The findings indicate that the use of exhaust heat recovery in HVAC systems can reduce energy consumption by up to 25%, while biogas from organic waste can lower fossil fuel dependence by 30%. Additionally, the integration of solar energy in sterilization processes has been shown to increase efficiency by 40% in industrial settings. Moreover, the study highlights that combining multiple energy conversion technologies results in greater energy savings compared to standalone implementations. A system integrating heat recovery and solar energy, for instance, demonstrated a 50% reduction in energy consumption within industrial sanitation applications. Despite these advantages, challenges such as high initial investment costs and limited regulatory support hinder widespread adoption. The research emphasizes the need for an optimization-based approach that considers technical, economic, and regulatory aspects to maximize efficiency and sustainability. By addressing these factors, industries can enhance hygiene system performance while reducing operational costs and environmental impact. Future research should focus on developing specific optimization models for various industrial and medical sectors and assessing the long-term implications of implementing these technologies at scale.
A Literature Review on the Health and Safety Risks in Small-Scale Renewable Energy Manufacturing: A Public Health Perspective Ade Suhara; Cahyo Wibowo; Fathan Dewadi
Public Health and Safety International Journal Vol. 5 No. 01 (2025): Public Health and Safety International Journal (PHASIJ)
Publisher : YCMM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55642/phasij.v5i01.1008

Abstract

The development of small-scale renewable energy manufacturing in developing countries significantly contributes to sustainable energy access and local economic independence. However, this manufacturing sector poses occupational health and safety (OHS) risks that are often overlooked, particularly regarding chemical exposure, technical dust, and informal working conditions. This article presents a systematic literature review to identify these risks from a public health perspective and assess the social, economic, and regulatory factors influencing working conditions. Findings reveal that OHS aspects are frequently neglected in small-scale renewable energy technology development, potentially leading to long-term health impacts, especially for women and young workers in the informal sector. The article recommends developing contextualized OHS guidelines, safety training programs, and healthy workspace design as mitigation strategies. A cross-sectoral approach involving government, academia, and industry stakeholders is essential to ensure safe and sustainable renewable energy manufacturing.
Co-Authors Ade Suhara Adri Maldi Subardjah Agus Subeno Amallia Amir Angga setiawan Apri Setiawan Bayu Bayu Aska Budi Triyono Daud Subekti Derry Murtadho Muthohhary Fathan Dewadi Fathan Mubina Dewadi Hanni Maksum Ardi Herbert Hasudungan Ilham Azmy Jumari Karyadi M Dibyo Setiawan M. Dibyo Setiawan M. Muryanto Mohammad Fadli Perdana Mokhamad Munir Fahmi Muftialawy muhammad muryanto Ojakma Sihar Panalili T Rayhan Alifa Rizal Jatnika Rizki Aulia Nanda Robi Ariansyah Saeful Rofi Romadhon setiawan, Dibyo Siahaan, Herbert Hasudungan Sulistianto Sunaryo Susilo Syaifi Toni Okviyanto Tubagus Syah Fatahillah Gelagah Wangi Bintaran Wibowo, Trio Nur Wisnu Widi Atmoko