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Rahman Hakim
Politeknik Negeri Batam, Indonesia
Aerospace Engineering Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics

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Implementasi Job Hazard Analysis (JHA) pada Pekerjaan Distribusi Air Minum di PT. XYZ Mutiarani Mutiarani; Aditya Dwi Putra Fajar; Rahman Hakim; Adi Syahputra Purba
Jurnal Syntax Admiration Vol. 5 No. 11 (2024): Jurnal Syntax Admiration
Publisher : Syntax Corporation Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46799/jsa.v5i11.1831

Abstract

Drinking water distribution work at PT. XYZ as a supporting part of the construction industry, involves a series of processes that have the potential to be dangerous and have high risks for workers. To ensure worker safety and health, identifying potential hazards and risks is important. The Job Hazard Analysis (JHA) method is an effective solution for carrying out this identification. This study aims to carry out the process of identifying potential hazards and risks and their control in the work of delivering drinking water supplies at PT. XYZ, using the JHA method. This approach allows systematic analysis of each step of the work, so that potential hazards can be clearly identified and the level of risk can be evaluated in depth. The results of the JHA analysis can be used as a basis for formulating effective control strategies to prevent accidents and injuries in the work environment. Based on the study results, the level of risk obtained at each stage of work before implementing controls varies but ranges between H12 or M9. After implementing risk control the residual risk value obtained is reduced to range between L2 to M6. The lowest residual risk value, namely L2, was obtained for the danger of negligence when checking vehicle oil from the previous value of M9 and the highest residual risk value of M6 was obtained for the danger of slippery floors when washing the vehicle from the previous risk value of M9.
Optimization of material design of wrench tool based on Finite Element Method in project-based learning scheme Yusuf Nurhuda; Syaiful Ma’rub Kurnianto; Nur Fitria Pujo Leksonowati; Ihsan Saputra; Rahman Hakim; Chairul Anam; Ahmad Syafi’i
TEKNOSAINS : Jurnal Sains, Teknologi dan Informatika Vol 13 No 2 (2026): TEKNOSAINS: Jurnal Sains, Teknologi dan Informatika
Publisher : LPPMPK- Universitas Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/tekno.v13i2.2106

Abstract

In the world of machinery maintenance, auxiliary equipment is needed that can facilitate work in the field of technology and engineering. Wrench tool are included in the category of hand tools that are often used in the world of maintenance. In the use of wrench tool, there are many problems regarding the design model and strength structure of several types of materials used. In general, wrench tool use Chrome Vanadium Steel (AISI 6150) material. In this study, there is one type of wrench tool that has been modified both in form and function through a project-based learning (PBL) learning scheme. A statistical analysis approach using the finite element method (FEM) was carried out with variations in three types of materials. The types of materials are Chromium-Vanadium Steel (AISI 6150), Chromium-Boron Steel (AISI O1), and ASSAB DF2 Steel. ASSAB DF2 Steel material shows the most optimal mechanical characteristics, in terms of stress value of 10.13 MPa, low displacement of 0.029 mm, a high safety factor, with a value of 68.1, and the longest fatigue life with 3.76 × 10⁵ cycles. Therefore, the combination of the new design and ASSAB DF2 Steel material is considered the most suitable for application to wrench tool that require strength, security, and long-term durability as the most effective solution to improve the structural performance and reliability of wrench tool based on simulation results using SolidWorks software
Co-Authors Adi Syahputra Purba Aditya Dwi Putra Fajar Ahmad Syafi’i Chairul Anam Ihsan Saputra MUTIARANI MUTIARANI Nur Fitria Pujo Leksonowati Syaiful Ma’rub Kurnianto Yusuf Nurhuda