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.

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 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

Spacecraft Fault Diagnosis Based on Telemetry Data Mining and Fault Tree Analysis and Design of Expert System

2013 ◽  
Vol 760-762 ◽  
pp. 1062-1066 ◽  
Author(s):  
Xiang Gao ◽  
Tao Zhang ◽  
Hong Jin Liu ◽  
Jian Gong
Keyword(s):  
Data Mining ◽  
Fault Diagnosis ◽  
Expert System ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Telemetry Data ◽  
Tree Analysis ◽  
Analysis And Design ◽  
Diagnosis Method ◽  
The Impact

In this paper, a fault diagnosis method for spacecraft based on telemetry data mining and fault tree analysis was proposed. Decision trees are constructed from the history telemetry data of the spacecraft, and are used to classify the current data which is unknown whether it is fault. If there is a fault, the fault tree method will be used to analyze the fault reason and the impact on the spacecraft system. This method can effectively solve the problem of diagnostic knowledge acquisition. We design and construct a fault diagnosis expert system for spacecraft based on this diagnosis method. An experiment is presented to prove the effectiveness and practicality of the expert system.

Design Quality Cost System through Fault Tree Analysis (FTA) for FNB Cast Iron Foundry Industry

2016 ◽  
Vol 24 ◽  
pp. 165-171
Author(s):  
Shailee G. Acharya ◽  
J.A. Vadher
Keyword(s):  
Cast Iron ◽  
System Development ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Design Quality ◽  
Quality Cost ◽  
Tree Analysis ◽  
Cost System ◽  
Iron Foundry ◽  
The Impact

The approach taken by this paper is expected to motivate the Furan No Bake (FNB) sand casting foundries to use a standardized system of classification to show unwanted casting defects for highly effective failure analysis. It will also motivate foundries to develop new systems to quantify process parameters relating to the defects. Any reduction in the scrap and rework also highly influences the impact on environment of industry. This paper covers the various aspects of a systematic approach for understanding and quality cost system development in cast iron foundries through Fault Tree Analysis (FTA).

scholarly journals Reliability Analysis of Operation for Cableways by FTA (Fault Tree Analysis) Method

1970 ◽  
Vol 22 (3) ◽  
pp. 163-173
Author(s):  
Sergej Težak ◽  
Zdravko Toš ◽  
Ivo Jurić
Keyword(s):  
Quality Of Service ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Analysis Method ◽  
Tree Analysis ◽  
Winter Tourism ◽  
Different Types ◽  
The Impact ◽  
Types Of Faults

This paper examines the reliability of the operation of cableway systems in Slovenia, which has major impact on the quality of service in the mountain tourism, mainly in wintertime. Different types of cableway installations in Slovenia were captured in a sample and fault tree analysis (FTA) was made on the basis of the obtained data. The paper presents the results of the analysis. With these results it is possible to determine the probability of faults of different types of cableways, which types of faults have the greatest impact on the termination of operation, which components of cableways fail most, what is the impact of age of cableways on the occurrence of the faults. Finally, an attempt was made to find if occurrence of faults on individual cableway installation has also impact on traffic on this cableway due to reduced quality of service. KEYWORDS: cableways, aerial ropeways, chairlifts, ski-tows, quality, faults, fault tree analysis, reliability, service quality, winter tourism, mountain tourist centre

scholarly journals RISK MANAGEMENT ON THE WARSHIP TASK OPERATIONS

JOURNAL ASRO ◽  
2018 ◽  
Vol 9 (1) ◽  
pp. 23
Author(s):  
Diksono Diksono ◽  
I Made Jiwa ◽  
Suparno Suparno
Keyword(s):  
Risk Mitigation ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Main Tool ◽  
Main Task ◽  
Event Tree ◽  
Event Tree Analysis ◽  
Tree Analysis ◽  
Formal Safety Assessment ◽  
The Impact

ABSTRACT The main task of the Indonesia Navy is to enforce the law and maintain security in the territorial sea of national jurisdiction, so that the Indonesian Navy is required to have the main tool of weapons systems (Alutsista) are always ready to carry out the task. The frequent occurrence of accidents experienced by the Indonesian Warship (KRI). This reduces the ability of Warship in performing the task. The purpose of this research is to investigate the causes and effects of accidents, and seek risk mitigation that is considered appropriate. Formal Safety Assessment (FSA) is a structured and systematic methodology used for maritime safety analysis. The fault tree analysis is used to investigate the cause of marine accidents and the event tree analysis is used to determine the impact of an accident. The results of this study are FSA can be effectively applied in accident investigations, although the calculation of cost benefit analysis for warships can be ignored because the Warship task cannot be compared to the value of money.  Keywords: Task Operation, Warship, FSA, fault tree analysis, event tree analysis

scholarly journals ANALISA TURUNNYA KUALITAS STERILISASI PADA ULTRAVIOLET WATER STERILIZER DI MT. DRAGONARIA DENGAN METODE FAULT TREE ANALYSIS

2017 ◽  
Vol 7 (2) ◽  
pp. 1622-1632
Author(s):  
Aditya Arin Sasongko ◽  
Abdi Seno ◽  
Andy Wahyu Hermanto
Keyword(s):  
Drinking Water ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Logic Gates ◽  
Ultraviolet Rays ◽  
Tree Analysis ◽  
Sterilization Process ◽  
Simple Logic ◽  
The Impact

Ultraviolet water sterilizer is a long cylindrical device used for the sterilization of water into  drinkable water. Ultraviolet water sterilizer has two main parts: an adapter and UV tubes. The  adapter serves to drain ration electricity in accordance with the voltage and current required by  ultraviolet water sterilizer. Tubes UV is containing lamps germicides where light is equipment  major unruk make the water drinkable and the water will flow along the ultraviolet rays, so that the  water flowing in the tube is passed through the sterilization process with ultraviolet rays so that the  water unfit for consumption. The problems that the authors take in this study are the factors that  affect the declining quality of sterilization, the impact of what happens when the quality of  sterilization decreased, and what efforts made to keep the quality of sterilization is not decreased.  The method used is the method of fault tree analysis, a method to find the root of the problem  by using a fault tree and simple logic gates to help determine the basic problem. Fault tree analysis  method consists of a top event, intermediate event, and basic event where all three events are  interrelated to form the fault tree that can be seen cause and effect. Data collected through  observation, interviews, and literature directly to the subject related to the factors, the impact, as  well as the efforts of the decline in the sterilization process to the sterilizer in order to improve the  quality of drinking water.  The cause of the decline to the sterilizer sterilization process in order to improve the quality  of drinking water in MT. Dragonaria that dirty filters, dirty water tubes, and the dirty germicidal  lamp or berdampaknya resulting in less fresh water, complaint against the company, as well as the  ship operational cost is reduced. Therefore made some efforts to improve the quality of the results  of sterilization including cleaning filters, cleaning water tubes, and also clean the germicidal lamp,  as well as auxiliary engine checks periodically so that the quality of sterilization can be increased. 

Study on Reliability Assessment of HVDC System Considering the Impact of Station Power Using System

2013 ◽  
Vol 347-350 ◽  
pp. 1482-1486
Author(s):  
Bao Rong Zhou ◽  
Xiao Ming Jin ◽  
Jian Bin Chen ◽  
Xin Ze Wang ◽  
Yuan Zeng
Keyword(s):  
System Reliability ◽  
Fault Tree ◽  
Reliability Assessment ◽  
Fault Tree Analysis ◽  
Reliability Evaluation ◽  
Analysis Method ◽  
Tree Analysis ◽  
Hvdc System ◽  
Important Impact ◽  
The Impact

Based on the introduction of the station power using system, this paper used fault tree analysis method to model the reliability of station power using system, which had been always ignored in traditional HVDC system reliability evaluation but actually had an important impact on the result of evaluation. Whats more, it assessed the reliability of the whole HVDC system (included station power using system) by means of frequency and duration method. Finally, an example was given to prove the correctness and validity of the proposed theory.

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