نتایج جستجو برای: risk priority number
تعداد نتایج: 2056004 فیلتر نتایج به سال:
Introduction: The safety of CNG stations is important because of their location in urban areas, as well as to prevent accidents and to protect the safety of personnel, property, and environment. An event occurrence analysis with probability updating is the key to dynamic safety analysis. Methods and materials: In this study, the Failure Modes and Effects Analysis (FMEA) technique was used to d...
in this paper, we present a revised similarity measure based onchen-and-chen's similarity measure for fuzzy risk analysis. the revisedsimilarity measure uses the corrected formulae to calculate the centre ofgravity points, therefore it is more effective than the chen-and-chen'smethod. the revised similarity measure can overcome the drawbacks of theexisting methods. we have also proposed a new ...
Failure mode and effects analysis (FMEA) is a well-known approach for correlating the failure modes of a system to their effects, with the objective of assessing their criticality. The criticality of a failure mode is traditionally established by its risk priority number (RPN), which is the product of the scores assigned to the three risk factors, which are likeness of occurrence, the chance of...
The purpose of this study is to determine the type failures, causes, as well efforts and proposed actions that can be taken improve performance pneumatic system CNC milling machines. Failure Mode Effect Analysis (FMEA) method used find priority problems through Risk Priority Number (RPN) for components machine. results critical component analysis were a leakage occurs in valve component, which ...
the world health organization’s (who’s) world health report 2010, “health systems financing, the path to universal coverage,” promoted universal health coverage (uhc) as an aspirational objective for country health systems. yet, in addition to the dimensions of services and coverage, distribution of coverage in the population, and financial risk protection highlighted by the report, the conside...
The safety of high risk jobs especially in oil refining activities is a major concern. In the present paper, the welding risks in Tehran oil refinery have been assessed using the Job Safety Analysis (JSA) and the effectiveness of the controlling methods have been investigated. A descriptive study was conducted on 33 risks of 10 welding tasks in Tehran oil refinery (north unit). After arrangi...
prevention of coronary heart disease, mainly by reducing the levels of known risk factors in the population, remains a priority in public health. this cross-sectional study on randomly selected medical students during their internship was conducted from july 2001 to april 2002 in order to determine the prevalence of major coronary artery disease (cad) risk factors. this survey was done by filli...
Consider aI~lUlti-priority, nonpreemptive, N-server Poisson arrival queueing system. The number of servers requested by an arrival has a known probability distribution. Service times are negative exponential. In order to save available servers for higher priority customers., arriving customers of each lower priority are deliberately queued whenever the number of servers busy equals or exceeds a...
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