نتایج جستجو برای: preventive and corrective maintenance
تعداد نتایج: 16847184 فیلتر نتایج به سال:
Knowledge based on personal experience (tacit knowledge) acquired in problem solving actions and maintenance is the fundamental basis for technicians companies with great physical assets. Generally, there no proper policy managing strategic knowledge its capture. In this article, through qualitative studies (grounded theory) surveys conducted technicians, aim was to obtain perception of technic...
the present study was an attempt to compare the effect of peer metalinguistic corrective feedback on elementary and intermediate efl learners speaking ability to see which level benefits more from this type of feedback. to this end, 117 female efl learners at grade 3, al-zahra high school in kermanshah, iran were non-randomly chosen. the homogeneity of the participants was attained through a pi...
We analyze a system of N components with dependent failure times. The goal is to obtain the optimal block replacement interval (different for each component) over a finite horizon that minimizes the expected total maintenance cost. In addition, we allow each preventive maintenance action to change the future joint failure time distribution. We illustrate our methodology with an example from Sou...
Preventive maintenance scheduling of generating units is addressed as a long-term scheduling in power system studies aiming to increase the reliability incorporating cost reduction. It consists of knowing which generating units should be shut down for regular safety inspection. In this paper, a new formulation of preventive maintenance scheduling associated with cost reduction index (CRI) is pr...
this paper presents a new bi-objective mathematical model for a permutation flowshop scheduling problem with availability constraint in case of preventive maintenance operations on machines. in this paper, preventive maintenance is flexible and there is not a certain time for the maintenance operation; however, time between two consecutive maintenance operations for each machine should not be g...
In this paper, we investigate two dimensional leased contracts for a dump truck operated in a mining industry. To keep the truck in a good operational condition, an imperfect preventive maintenance (PM) policy is applied. When the truck fails then corrective maintenance (CM) is done. PM and/or CM can be leased to an external agent or a lessor for an economic reason. The situation under study is...
-From the preliminary stage of software engineering, selection of appropriate enforcement of standards remained a challenge for stakeholders during entire cycle of software development, but it can lead to reduce the efforts desired for software maintenance phase. Corrective maintenance is the reactive modification of a software product performed after delivery to correct discovered faults. Stud...
Ammonium Hydroxide production unit (AHPU) is one of the widely used and important units available in many industries such as oil gas, petrochemical, power plants. In this research, for first time, a detailed systematic inspection maintenance plan AHPU is determined based on prioritization equipment using equipment’s risk analysis. Equipment’s failure calculated based probability ...
This is a proposal of the content of a licentiate thesis in Innovation and Design at Mälardalen University, Sweden. The contents of the licentiate thesis are concerning Condition Based Maintenance (CBM) in technical systems. The need to make more effective maintenance actions have been shown in various national and international scientific papers. It has also been shown that the traditional mai...
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