نتایج جستجو برای: failure mode effect and criticality analysis fmeca
تعداد نتایج: 17632325 فیلتر نتایج به سال:
در این رساله با به کارگیری فرآیند fmea (failure mode and effect analysis و با نگاهی چند جانبه و علت گرا ریشه های احتمالی خرابی یک پمپ گریز از مرکز با سرویس lpg مورد بررسی و مطالعه قرار گرفته است. ابتدا با جمع آوری و بررسی آمار خرابی 368 پمپ در یک دوره هشت ساله، پمپ با بیشترین آمار خرابی به عنوان یک نمونه مطالعاتی انتخاب شد و با بررسی مستندات مربوط به فعالیت های تعمیراتی پمپ مذکور، مشخص شد که...
Predicting the failure modes effect and criticality analysis (FMECA) of a dynamic positioning (DP) system using fuzzy logic is aim this research. The identification DP systems subsystems, classification into critical less-critical levels based on Risk Priority Number (RPN) to depict main root causes in are some objectives support goal. offers details number issues, including their effects funct...
Gas path fault diagnosis of a gas turbine is complex task involving field data analysis and knowledge-based reasoning. In this paper, data-knowledge hybrid driven method for proposed by integrating physical model-based (GPA) with ontology model. Firstly, GPA used to extract the features from data. Secondly, virtual distance mapping algorithm developed map result specific feature criteria indivi...
prevention of medication errors in neonatal intensive care units (nicus) is of paramount importance due to age-specific and physiological conditions of neonates. this study aimed to evaluate the risk of medication prescription and administration via failure mode and effects analysis (fmea), which was carried out at the research and medical teaching center of imam reza hospital in mashhad, iran....
The paper describes modern technologies of Computer Network Reliability. Software tool is developed to estimate of the CCN critical failure probability (construction of a criticality matrix) by results of the FME(C)A-technique. The internal information factors, such as collisions and congestion of switchboards, routers and servers, influence on a network reliability and safety (besides of hardw...
Risk analysis and management is the cornerstone of any scienceand risk-based approach1 for modern drug development and manufacturing.2 In order to understand and document processes and products, standard risk analysis tools have been adapted from other industries and academia. These tools include Ishikawa Diagrams,3 P-Diagrams, Preliminary Hazard Analysis (PHA), Failure Modes and Effect Analysi...
This paper develops a Failure Mode, Effects and Criticality Analysis (FMECA) for heating, ventilation air conditioning (HVAC) system in railway. HVAC is safety critical which must ensure emergency case of fire loss primary functions. A study the HVAC's areas mandatory to optimize its reliability availability consequently guarantee low operation maintenance cost. The first part describes FMECA p...
Medical robots can perform complex tasks and share their working area with humans. Therefore, they belong to safety critical systems. In nowadays development process, safety is often managed by the way of dependability techniques. We propose a new global approach, based on the risk concept in order to guide designers along the safety analysis of such complex systems. Safety depends on risk mana...
This paper proposes a methodology for managing complex sewerage networks based on the concomitant use of two performance evaluation methods, namely, failure modes, effects, and criticality analysis (FMECA) analytical hierarchy process (AHP). The FMECA is used to determine risks structural failures making it possible establish these failures. AHP check relationship consistency between indicators...
Failure Modes, Effects, and Criticality Analysis are widely used to assess the failure modes of a system, along with their causes effects. Several Multi-Criteria Decision-Making approaches have been developed overcome limitations traditional FMECA. In these approaches, several multiple criteria considered determine criticality values assign ranks. only one expert can involve in analysis. By inc...
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