scholarly journals USULAN PERBAIKAN SUMBER BAHAYA PADA AREA ASSEMBLY 2 DENGAN METODE HAZARD AND OPERABILITY STUDY DAN FAULT TREE ANALYSIS (STUDI KASUS: PT. ASTRA DAIHATSU MOTOR)

2019 ◽  
Vol 14 (2) ◽  
pp. 111
Author(s):  
Singgih Saptadi ◽  
Fahmi Ardi
Keyword(s):  
Manufacturing Industry ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Value Added ◽  
Risk Level ◽  
Tree Analysis ◽  
Industrial Labor ◽  
Medium Risk ◽  
Level 3 ◽  
Hazard Sources

Perkembangan industri di Indonesia, khususnya pada industri manufaktur, mengalami kemajuan yang cukup pesat. Populasi tenaga kerja industri bertambah seiring perkembangan industri dan nilai tambah industri nasional yang meningkat dengan jumlah sebanyak 30,992 orang pada tahun 2018, meningkat 17,92% dibanding tahun 2017. Namun, masalah dan penanggulangan pada kasus kecelakaan kerja masih kurang diperhatikan, dibarengi dengan jumlah kecelakaan kerja yang masih tinggi, tidak terkecuali di PT. Astra Daihatsu Motor. Maka dari itu penelitian dilakukan di area Assembly 2 di area pabrik PT. Astra Daihatsu Motor di kawasan Sunter, Jakarta, dengan metode Hazard and Operability Study (HAZOP) dan Fault Tree Analysis (FTA) untuk mengetahui potensi bahaya secara teliti serta mengungkap unsur-unsur yang berpotensi berbahaya dalam sistem. Pada penelitian ini ditemukan sebanyak 17 sumber bahaya dengan 2 sumber termasuk dalam level risiko tinggi, 3 sumber level risiko sedang, dan 12 sumber level risiko rendah. Analisis deduktif dengan Fault Tree Analysis didapatkan hasil dengan munculnya 5 basic event dari Thinner dan 4 basic event dari Lampu Heater dengan rekomendasi perbaikan pada aspek desain, konstruksi, dan pelatihan handling yang baik pada material tersebut. Abstract[Proposed Improvement of Hazard Sources In The Area of Assembly 2 With The Hazard And Operability Study And Fault Tree Analysis (Case Study: PT. Astra Daihatsu Motor)]The development of industry in Indonesia, especially in the manufacturing industry, has experienced rapid progress. The industrial labor population increased as industry development and national industrial value added increased by as many as 30,992 people in 2018, an increase of 17.92% compared to 2017. However, the prevention and countermeasures in cases of workplace accidents are still not considered as priority, including in PT. Astra Daihatsu Motor. Therefore a research has been conducted in the Assembly 2 area at the PT. Astra Daihatsu Motor in the Sunter area, Jakarta, using the applicability of Hazard and Operability Study (HAZOP) method and the Fault Tree Analysis (FTA) method to carefully identify potential hazards and reveal potentially dangerous elements in the system. In this study 17 sources of hazards were found with 2 sources including high risk level, 3 medium risk level sources, and 12 low risk level sources.  Deductive analysis with Fault Tree Analysis is obtained, namely 5 basic events from Thinner and 4 basic events from the Heater Lamps with recommendations on aspects of design, construction, and handling training in the material.Keywords: work accident; hazard and operability; risk level; fault tree analysis

scholarly journals ANALISIS PENGURANGAN WASTE PADA PROSES PERAWATAN KERETA

2019 ◽  
Vol 1 (1) ◽  
pp. 34-42
Author(s):  
Ardiansyah Odi ◽  
Akhmad Nidhomuz Zaman ◽  
Siti Rohana Nasution ◽  
Sambas Sundana
Keyword(s):  
Lead Time ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Value Added ◽  
Tree Analysis ◽  
Big Picture

Tulisan ini menjelaskan tentang identifikasi waste pada perawatan kereta bagian bogie dan memberikan rekomendasi perbaikan yang bertujuan untuk mengurangi waste yang terjadi. Dengan menggunakan pendekatan lean concept yang lebih dominan ke arah lean service, penelitian ini dimulai dengan menggambarkan big picture mapping dan pembobotan nilai waste berdasarkan kuesioner menggunakan VALSAT. Waste juga diidentifikasi menggunakan fault tree analysis yang selanjutnya dilakukan perhitungan nilai kritis waste menggunakan FMEA kemudian dilakukan rekomendasi perbaikan menggunakan pendekatan 5W+1H. Hasil perhitungan berdasarkan data yang dikumpulkan, didapatkan bahwa total lead time pengerjaan perawatan kereta yang sebelumnya sebesar 995 menit menjadi 873 menit. Dengan presentase dari value added activity sebesar 93% dan non – necessary value adding sebesar 7%. Dan berdasarkan analisa FMEA didapatkan bahwa waste kritis yang diperlukan perbaikan adalah waste unnecessary motion dengan skor RPN sebesar 140.

scholarly journals Sand casting safety assessment for foundry enterprises: fault tree analysis, Heinrich accident triangle, HAZOP–LOPA, bow tie model

2018 ◽  
Vol 5 (10) ◽  
pp. 180915 ◽  
Author(s):  
Qingwei Xu ◽  
Kaili Xu ◽  
Xiwen Yao ◽  
Jinjia Zhang ◽  
Ben Wang
Keyword(s):  
Safety Assessment ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Sand Casting ◽  
Risk Level ◽  
Foundry Sand ◽  
Tree Analysis ◽  
Preventative Measures ◽  
Explosion Accidents ◽  
Bow Tie

Sand casting operations, though commonplace, pose a significant threat of explosion accidents. This paper presents a novel sand casting safety assessment technique based on fault tree analysis, Heinrich accident triangle, hazard and operability–layer of protection analysis (HAZOP–LOPA) and bow tie model components. Minimal cut sets and minimal path sets are first determined based on fault tree analysis, then the frequency of sand casting explosion accidents is calculated based on the Heinrich accident triangle. Third, the risk level of venting quality can be reduced by adopting HAZOP–LOPA; the residual risk level of venting quality remains excessive even after adopting two independent protective layers. The bow tie model is then adopted to determine the causes and consequences of venting quality. Five preventative measures are imposed to enhance the venting quality of foundry sand accompanied by 16 mitigative safety measures. Our results indicate that the risk attributable to low foundry sand venting quality can be minimized via bow tie analysis.

scholarly journals Perbaikan Proses Pengujian Qualitas Pada Produk Donut Mix Untuk Meningkatkan Produktivitas

2021 ◽  
Vol 6 (2) ◽  
pp. 93
Author(s):  
Nur Fadilah Fatma ◽  
Henri Ponda ◽  
Dian Yuliani
Keyword(s):  
Fault Tree ◽  
Fault Tree Analysis ◽  
Value Added ◽  
Test Methods ◽  
Flow Process ◽  
Tree Analysis ◽  
Current Test ◽  
The World ◽  
Sample Testing ◽  
The Impact

A company, will experience a process of ups and downs where this is a common thing. At the end of 2020, the world was shocked by the corona virus pandemic in all parts of the world. The impact of this pandemic has led to the confinement of employees as in this company. So that it makes productivity decrease, especially in the Quality department. To deal with this, the company asks employees to make changes in the sample testing flow process, to identify non-value-added activities. This resulted in disruption of the shipping process and many samples piled up. The purpose of this study is to identify and plan improvements that lead to non-value-added activities. This study uses the Fault Tree Analysis (FTA) and 5W1H methods. The FTA analysis shows that the cause of non-value-added activity is the mixing process is too long, too many processes during molding and the proofing process is too long. Based on this FTA analysis, priorities for corrective action plans can be determined to implement these improvements. The improvement plan uses the 5W1H method, which is to review the current test methods. The results of this study were very effective because they were able to reduce the processing time by 59 minutes.Keywords: Fault Tree Analysis, 5W1H, flow process, effectiveness and pandemic.

Analisis Faktor Keterlambatan COD Proyek PLN UIP Kalbagtim dengan Metode Analytical Hierarchy Process dan Fault Tree Analysis

2021 ◽  
Vol 6 (1) ◽  
pp. 34
Author(s):  
Avira Dinda Pradiani ◽  
Nunung Nurhasanah
Keyword(s):  
Analytical Hierarchy Process ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Fish Bone ◽  
Risk Level ◽  
Pareto Chart ◽  
Tree Analysis ◽  
East Kalimantan ◽  
Hierarchy Process ◽  
A Company

<p><strong><span lang="IN">PLN </span><span>Unit Induk Pembangunan Kalimantan Bagian Timur</span><span lang="IN"> (PLN UIP Kalbagtim) is a company that is responsible for electricity needs in the East Kalimantan region. PLN UIP Kalbagtim covers three types of projects. There are power projects, substation projects, and transmission projects. However, many of these projects experienced delays in their Commercial Operation Date (COD). PLN UIP Kalbagtim only measures the risk level generally and does not measure the root causes of the possible occurrence of this risk. Based on these problems, a study was conducted to identify the projects that experienced delays the most using the Pareto diagram, then analyzed the factors and root causes of the delay using a fish-bone diagram, then using the Analytical Hierarchy Process method, data processing was done to obtain the probability value of each root event. Furthermore, using the Fault Tree Analysis method, the probability value of delay is calculated until the smallest value is found. From the research that has been done, it can be concluded that the transmission project in the form of SUTT is the project that most often experiences delays due to machine, man, material, method, and money factors. The factor that must be set as the priority or focus of the company is the money factor and the root of the incident in it will also be automatically deleted so that the possibility of delays is reduced from 52.71% to 25.28%. </span></strong></p><p><strong><em>Keywords -</em></strong><em> Analytical Hierarchy Process, Fault Tree Analysis, Pareto Chart, Fish-bone Diagram</em></p><p><strong><span lang="IN"><br /></span></strong></p>

Fault Tree Analysis for a Modern Communication System

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Kamal Hamid ◽  
Nadim Chahine
Keyword(s):  
Communication System ◽  
Communication Systems ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Theory And Practice ◽  
Tree Analysis ◽  
Satisfactory Performance ◽  
System Components ◽  
Link Budget ◽  
Simulation Results

Wireless communications became one of the most widespread means for transferring information. Speed and reliability in transferring the piece of information are considered one of the most important requirements in communication systems in general. Moreover, Quality and reliability in any system are considered the most important criterion of the efficiency of this system in doing the task it is designed to do and its ability for satisfactory performance for a certain period of time, Therefore, we need fault tree analysis in these systems in order to determine how to detect an error or defect when happening in communication system and what are the possibilities that make this error happens. This research deals with studying TETRA system components, studying the physical layer in theory and practice, as well as studying fault tree analysis in this system, and later benefit from this study in proposing improvements to the structure of the system, which led to improve gain in Link Budget. A simulation and test have been done using MATLAB, where simulation results have shown that the built fault tree is able to detect the system’s work by 82.4%.

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