Procedure for Failure Mode, Effects, and Criticality Analysis (FMECA)

This document provides guidelines for the accomplishment of Failure Mode, Effects, and Criticality Analysis (FMECA) on the Apollo program. It is a procedure for analysis of hardware items to determine those items contributing most to system unreliability and crew safety problems

Reliability failure mode, effects, and criticality analysis : addendum 2 PSE

This addendum updates the System Failure Mode, Effects and Criticality Analysis (FMECA) for the Passive Seismic Experiment (PSE) Array A-2D, and E to the date of this addendum.prepared by R.W. Hiebert.B-

Reliability failure mode, effects, and criticality analysis : addendum 1; HFE

This addendum is an update to 501 B for Heat Flow Experiment (HFE), Array A-2, D, E. Contained in this addendum is the discussion of the changes and the updated Failure Mode, Effects and Criticality Analysis (FMECA) Work Sheets.prepared by R.W. Hiebert.B-

Enhance maintenance problem recognition techniques and its application to palm oil mills

This paper discusses the application of enhanced maintenance problem recognition techniques. The main contribution of this study is the proposed combined techniques, namely snapshot model, failure mode, effect and criticality analysis (FMECA), Pareto analysis, and decision analysis by using information technology (IT). The snapshot model is part of the maintenance modelling technique while FMECA, Pareto analysis, and decision analysis are part of maintenance reliability techniques. Each of the techniques and the proposed combined techniques is explained. The case study used for this enhanced technique was the palm oil mills maintenance problem. The result and possible further enhancement is also discussed

Identifikasi Kegagalan Komponen Pada Container Crane Menggunakan Failure Mode Effects and Criticality Analysis (FMECA) Dan Fault Tree Analysis (FTA)

Didalam kawasan pelabuhan, terdapat terminal petikemas sebagai penyedia akses transportasi bongkar-muat petikemas dari kapal ke darat maupun sebaliknya. Untuk mendukung seluruh tahapan proses yang dilakukan pada terminal petikemas, maka keberadaan sebuah pesawat angkat-angkut sangat dibutuhkan dan memiliki peranan penting dalam proses layanan yang disediakan oleh perusahaan terminal petikemas contohnya seperti Container Crane (CC). Menurut Triatmodjo pengertian Container Crane adalah jenis crane portal tinggi berkaki tegak yang mengangkat benda dengan hoist yang dipasang di sebuah troly hoist dan dapat bergerak secara horizontal pada sepasang rel yang dipasang di bawah balok atau lantai kerja. Sehingga akan berpengaruh terhadap produktifitas apabila terjadi kendala. Oleh karena itu perlu diadakannya sebuah perencanaan yang matang untuk meminimalisir terjadinya kegagalan sistem yang dapat berpengaruh langsung terhadap perusahaan baik secara fisik dan material. Berdasarkan data kecelakaan dari perusahaan pada tahun 2019 dan 2020 terdapat beberapa kejadian yang disebabkan oleh kegagalan pada komponen Container Crane (CC) . Dan dengan menggunakan metode Failure Mode, Effects, and Criticality Analysis (FMECA) maka dapat diketahui mode kegagalan suatu sistem, subsistem, atau komponen. Selain itu, juga didapatkan nilai Criticality ranking. Dari Criticality ranking tersebut, risiko yang memiliki nilai paling tinggi akan dicari skenario penyebab dasar terjadinya kegagalan menggunakan metode Fault Tree Analysis (FTA). Metode Fault Tree Analysis (FTA) adalah suatu teknik yang digunakan untuk mengidentifikasi bahaya yang berperan terhadap terjadinya kegagalan

Enhanced maintenance problem recognition techniques and its application to palm oil mills

This paper discusses the application of enhanced maintenance problem recognition techniques. The main contribution of this study is the proposed combined techniques, namely snapshot model, failure mode, effect and criticality analysis (FMECA),Pareto analysis, and decision analysis by using information technology (IT). The snapshot model is part of the maintenance modelling technique while FMECA, Pareto analysis, and decision analysis are part of maintenance reliability techniques.Each of the techniques and the proposed combined techniques is explained. The case study used for this enhanced technique was the palm oil mills maintenance problem. The result and possible further enhancement is also discussed

Analisis dan Peningkatan Kinerja Mesin Bubut Menggunakan Failure Mode Effects Criticality Analysis di Bengkel XYZ

Bengkel XYZ merupakan perusahaan yang memproduksi dan memperbaiki produk komponen. Bengkel XYZ sering menghadapi masalah downtime sehingga aktivitas produksi menjadi terhambat dan menyebabkan tertundanya pengiriman pesanan konsumen. Perhitungan Overall Equipment Effectiveness (OEE) menunjukan terdapat mesin bubut  yang memiliki nilai OEE dibawah 85%, yang berarti kinerjanya belum baik berdasarkan standard yang ditetapkan oleh Japan Institute of Plant Maintenance (JIPM), yaitu pada mesin bubut IK, mesin bubut IIS, dan mesin bubut IIIS. Penelitian ini bertujuan untuk mengidentifikasi penyebab dan dampak yang ditimbulkan oleh mesin bubut yang memiliki kinerja belum baik menggunakan failure mode effect and criticality analysis (FMECA). Hasil analisis identifikasi FMECA menunjukkan: (1) pada mesin bubut IK potential failure modes terdapat 1 kategori tolerable dan 8 kategori unacceptable memiliki critical priority tertinggi, yaitu ketidak-presisian pada chuck dengan nilai RPN sebesar 900, (2) pada mesin bubut IIS potential failure modes terdapat 1 kategori tolerable dan 7 kategori unacceptable memiliki critical priority tertinggi yaitu kerusakan pada main bearing dan kerusakan pada gearbox dengan nilai RPN a sebesar 900, (3) pada mesin bubut IIIS potential failure modes terdapat 2 kategori tolerable dan 9 kategori unacceptable dengan critical priority tertinggi, yaitu kerusakan pada internal dinamo motor memiliki nilai RPN 900. Perbaikan yang dilakukan Bengkel XYZ adalah dengan membuat perencanaan perawatan mesin bubut, standar kebersihan mesin, tanggung jawab bagi operator, dan pelatihan bagi operator serta untuk mempertahankan kondisi mesin agar tetap terkontrol dapat melakukan daily checklist untuk memeriksa keadaan mesi

Preliminary designs for 25 kWe advanced Stirling conversion systems for dish electric applications

Under the Department of Energy's (DOE) Solar Thermal Technology Program, Sandia National Laboratories is evaluating heat engines for terrestrial Solar Distributed Heat Receivers. The Stirling engine has been identified by Sandia as one of the most promising engines for terrestrial applications. The Stirling engine also has the potential to meet DOE's performance and cost goals. The NASA Lewis Research Center is conducting Stirling engine technology development activities directed toward a dynamic power source for space applications. Space power systems requirements include high reliability, very long life, low vibration and high efficiency. The free-piston Stirling engine has the potential for future high power space conversion systems, either nuclear or solar powered. Although both applications appear to be quite different, their requirements complement each other. Preliminary designs feature a free-piston Stirling engine, a liquid metal heat transport system, and a means to provide nominally 25 kW electric power to a utility grid while meeting DOE's performance and long term cost goals. The Cummins design incorporates a linear alternator to provide the electrical output, while the STC design generates electrical power indirectly through a hydraulic pump/motor coupled to an induction generator. Both designs for the ASCS's will use technology which can reasonably be expected to be available in the early 1990'

Microbiological contamination models for use in risk assessment during pharmaceutical production

This paper describes the fundamental mechanisms of microbial contamination during manufacture of pharmaceutical products. Models are derived that describe air and surface contact contamination. These models can be used to develop and improve methods of microbial risk assessment. The use of the FMEA (FMECA) method of risk assessment is discussed and, when used with the correct risk factors, its use endorsed

Risk Assessment of a Wind Turbine: A New FMECA-Based Tool With RPN Threshold Estimation

A wind turbine is a complex system used to convert the kinetic energy of the wind into electrical energy. During the turbine design phase, a risk assessment is mandatory to reduce the machine downtime and the Operation & Maintenance cost and to ensure service continuity. This paper proposes a procedure based on Failure Modes, Effects, and Criticality Analysis to take into account every possible criticality that could lead to a turbine shutdown. Currently, a standard procedure to be applied for evaluation of the risk priority number threshold is still not available. Trying to fill this need, this paper proposes a new approach for the Risk Priority Number (RPN) prioritization based on a statistical analysis and compares the proposed method with the only three quantitative prioritization techniques found in literature. The proposed procedure was applied to the electrical and electronic components included in a Spanish 2 MW on-shore wind turbine