Application of FMEA and Pareto Analysis Methods in the Process of Industrial Bread Making in Romania

Zero defects or nearly zero faulty products production process represents a new and important concern towards quality control of production systems. The requirement of a pertinent statistical control is important for identifying and monitoring defects, the main source of defects that occur in industrial bread making process. The current study was focused on applying two analysis methods Failure Mode and Effects Analyses, abbreviated FMEA and Pareto. Analysis concerning two technological stages that were considered as having a major impact on the quality of the final products. It was observed that the percent of nonconformities decreased in a significant manner – from 30% in 2018 to 5% in 2019 by applying the FMEA analysis. Also, the Pareto diagram showed that the application of several corrective measurements conducted to important decreases of Risk Priority Number from 288 to 128 and the severity decreased from 8 to 5 in the mixing process and from 128 to 81 for the baking process.

Problems of sustainable “green” development of alternative energy

The paper analyzes the known risks of power supply failure in the case of further development of renewable energy sources. The use of FMEA analysis allowed to analyze the significance of various risks of alternative energy. It is shown that the use of the FMEA method is becoming one of the most important areas of technosphere safety for the further development of alternative energy. The introduction of the share of alternative energy into the total energy balance leads to a decrease in the share of traditional sources of energy generation. In turn, a decrease in the share of traditional sources of energy production in the case of a combination of unfavorable natural factors causes to the collapse of the energy supply system and causes a complete shutdown of alternative energy.

Process improvement design at PT URW using failure mode and effect analysis

PT URW is a company engaged in the textile sector that processes yarn into semi-finished fabrics. Such is the case that PT URW has a problem with its waste materials. To address this, the researcher has implemented the method of failure mode and effect analysis (FMEA). In data collection and processing, the researcher defined the problem, collected data, took measurements using the critical waste method, and interpreted the data into the Pareto Chart. The area that had the greatest value was continued to the analysis stages of critical waste analysis, FMEA analysis, and alternative solutions. The research was concluded by providing corrective solutions based on the potential causes that had been found in the previous stage and by validating the formed planned improvements.

Integrasi Statistical Process Control dan Failure Mode And Effect Analysis Guna Meminimalisasi Defect Pada Proses Produksi Pipa PVC

<p><em>Quality can be referred as fitness to use. Furthermore, Quality standard is considered as a way in order to meet customers’ need. PT AZ is a manufacture enterprise which produce polyvinyl chloride (PVC) pipes. This firm has been implementing a Standard Operating Procedure (SOP) in maintaining defect with no more than 2,5% reject product during process production. However, such defects have been happened in production line which were not meet company standards. This study aims to evaluate defect along production process in order to find suitable solution in improving product quality. Seven Tools and Failure and Mode and Effect Analysis (FMEA) were used as research method. The results showed that there were 3 types of defects, namely spot defect, sink marks ant scratch defect. Furthermore, the results of the Cause-and-effect diagram show that human error, </em><em>material</em><em>s and machine are considered as main factors in contributing such defect. In addition, result from FMEA analysis detect that analysis and calculation of the highest RPN 147, namely the human factor is considered as the highest Risk Priority Number with 147 score. This study suggest that further training and supervision should be give to employees in order to improve employers’’ knowledge</em></p><p><em><br /></em></p>

Implementasi Metode Overall Equipment Effectiveness Berbasis Six Big Losses Guna Mengevaluasi Efektivitas Mesin Packing Semen

Integrated maintenance management is an important factor in maintaining the stability of machine operations in manufacturing companies. PT AAAA Factory Gresik is a cement manufacturing company, where the Section Division of Gresik Finish Mill Packer Operation has a problem of downtime cement packing machine 40 kg and causes production delay. This study aims to evaluate the effectiveness of the 40kg cement packing machine as well as to calculate losses due to unproductiveness of the packing machine. Overall Equipment Effectiveness (OEE), Six Big Losses, and Failure Mode and Effect Analysis (FMEA) were used as research method. This study found that OEE value for January-December 2019 of 41.25% are considered as lower percentage in compare with the ideal value of international standards which is 85%. Moreover, the largest average losses are found, namely reduce speed losses, idle and stoppages minor losses and defects in process with percentage in following order, 4.49%, 4.49% and 2.76%.Result from FMEA analysis have been identified 3 highest Risk Priority Number (RPN), namely transportation with an RPN value of 294, the second RPN value of 288 is a blockage in the packing machine, finally the engine button is jammed with an RPN value of 252. The proposed improvement scenario is the start of the engine operating operators checking and cleaning machines regularly and the marketing division expands the sales market.

A Concept of Risk Prioritization in FMEA Analysis for Fluid Power Systems

FMEA analysis is a tool of quality improvement that has been widely used for decades. Its classical version prioritizes risk of failure by risk priority number (RPN). The RPN is a product of severity (S), occurrence (O), and detection (D), where all of the factors have equal levels of significance. This assumption is one of the most commonly criticized drawbacks, as it has given unreasonable results for real-world applications. The RPN can produce equal values for combinations of risk factors with different risk implications. Another issue is that of the uncertainties and subjectivities of information employed in FMEA analysis that may arise from lack of knowledge, experience, and employed linguistic terms. Many alternatives of risk assessment methods have been proposed to overcome the weaknesses of classical FMEA risk management in which we can distinguish methods of modification of RPN numbers of employing new tools. In this study, we propose a modification of the traditional RPN number. The main difference is that severity and occurrence are valued based on subfactors. The detection number remained unchanged. Additionally, the proposed method prioritizes risk in terms of implied risk to the systems by implementing functional failures (effects of potential failures). A typical fluid power system was used to illustrate the application of this method. The method showed the correct failure classification, which meets the industrial experience and other research results of failures of fluid power systems.

Evaluation of the cost-effectiveness of fmea analysis (assembly of aircraft tail as-semblies at PJSC VASO)

The problems of improving the quality of technological processes in domestic enterprises due to their high relevance are reflected in numerous publications of both theoretical and practical nature. However, the performance assessment procedures in the standards are schematically not properly spelled out. This makes it difficult in practice to choose evaluation mechanisms and methods. The priority mechanism of improvement of the enterprise's activity in the field of quality is measurement of efficiency and efficiency of the current quality management system. In our opinion, any activity aimed at improving quality should be economically justified at the stage of its planning. The article proposes a mechanism for assessing the cost-effectiveness of using one of the tools of quality management – analysis of the types, consequences and causes of potential consequences of the industrial production process. The purpose of this analysis is to ensure that all process quality requirements with increased risk are met by developing corrective measures to eliminate the occurrence of probable failures. The article provides an example of such a process-specific analysis. The presented mechanism for assessing the economic efficiency of QMS is based on the real financial performance of the enterprise and can be used at domestic industrial enterprises to measure the costs and results of investments in product (work, services) quality management.

FMEA and Risks Assessment for Thermochemical Energy Storage Systems Based on Carbonates

Thermochemical energy storage systems from carbonates, mainly those based on calcium carbonate, have been gaining momentum in the last few years. However, despite the considerable interest in the process, the Technology Readiness Level (TRL) is still low. Therefore, facing the progressive development of the technology at different scales is essential to carry out a comprehensive risk assessment and a Failure Mode Effect and Analysis (FMEA) process to guarantee the safety and operation of the technology systems. In this study, the methodology was applied to a first-of-its-kind prototype, and it is a valuable tool for assessing safe design and operation and potential scaling up. The present work describes the methodology for carrying out these analyses to construct a kW-scale prototype of an energy storage system based on calcium carbonate. The main potential risks occur during the testing and operation stages (>50% of identified risks), being derived mainly from potential overheating in the reactors, failures in the control of the solar shape at the receiver, and potential failures of the control system. Through the assessment of Risk Priority Numbers (RPNs), it was identified that the issues requiring more attention are related to hot fluid path to avoid loss of heat transfer and potential damages (personal and on the facilities), mainly due to their probability to occur (>8 on a scale of 10). The results derived from the FMEA analysis show the need for specific control measures in reactors, especially in the calciner, with high operation temperatures (1000 °C) and potential effects of overheating and corrosion.