دانلود رایگان مقاله انگلیسی ارزیابی قابلیت اطمینان فازی وقایع پایه درخت های خطا از طریق پردازش داده های کیفی به همراه ترجمه فارسی
عنوان فارسی مقاله: | ارزیابی قابلیت اطمینان فازی وقایع پایه درخت های خطا از طریق پردازش داده های کیفی |
عنوان انگلیسی مقاله: | A fuzzy reliability assessment of basic events of fault trees through qualitative data processing |
رشته های مرتبط: | مهندسی صنایع، بهینه سازی سیستم ها، برنامه ریزی و تحلیل سیستم |
فرمت مقالات رایگان | مقالات انگلیسی و ترجمه های فارسی رایگان با فرمت PDF میباشند |
کیفیت ترجمه | کیفیت ترجمه این مقاله خوب میباشد |
توضیحات | صفحات 7 الی 12 ترجمه شده است. |
نشریه | الزویر – Elsevier |
کد محصول | f213 |
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جستجوی ترجمه مقالات | جستجوی ترجمه مقالات مهندسی صنایع |
بخشی از ترجمه فارسی مقاله: . بررسی الگوریتم 6. یک مطالعه ی حالت گویا |
بخشی از مقاله انگلیسی: 5. Algorithm verification In this section, we describe how the proposed fuzzy reliability algorithm is validated. To investigate the feasibility of the proposed algorithm, the actual failure probabilities taken from the US Combustion Engineering reactor protection system (CERPS) during the period 1984 through 1998 operating experience, which are well documented in Wierman et al. [50], are compared to the failure probabilities generated by the algorithm. Many authors in the past have used this data source to validate their experimental studies. Bondavalli and Filippini [4] used this data source to validate their proposed stochastic Petri net to assess the availability and performance of the safety function of the reactor protection system. In the study by Bartha et al. [1], this data was used to validate their proposed periodic and outage testing methodology of the reactor protection systems in the Paks Nuclear Power Plant. Meanwhile, Kang and Han [23] used this data source to calculate alpha parameters to make the common cause failure event failure probabilities suitable for the emergency diesel generator for Ulchin Unit 3. Bickel [2] used this data set to evaluate the risk implications of the core protection calculator system failure in the reactor protection system. Component failure probabilities in Wierman et al. [50] are presented in three different values, i.e. best estimate, lower bound, and upper bound reliability values. The best estimate reliability value is the recommended reliability data to be used in the FTA. Meanwhile, the upper and the lower bound reliability values represent a range of reliability data estimation. To verify the feasibility and the applicability of the proposed algorithm, the basic event failure probabilities generated by the proposed algorithm have to be between the upper and the lower bound reliability values and as close as possible to the best estimate reliability value. If the results show that the generated failure probabilities are beyond the range of the reliability data estimation, the membership functions to represent the qualitative data need to be explored in more detail. 6. An illustrative case study This section describes the data sets used to verify the proposed algorithm and quantify the algorithm performance as well as carry out result analysis to verify the feasibility of the proposed algorithm. 6.1. Basic event data sets A reactor protection system is one of many safety systems in commercial reactors that comprises numerous electronic and mechanical components to produce an automatic or manual rapid shutdown when the reactor experiences disturbed conditions and requires a trip to stop the nuclear reaction. Basic events used here are taken from the CERPS fault tree presented in Wierman et al. [50]. We can see from Table 2 that there are 37 basic events to be assessed. To illustrate how the proposed algorithm generates the basic event failure probabilities of the CERPS fault tree, we choose two basic events from Table 2, i.e. b5 and b18. The failure probabilities for all other basic events generated by the algorithm are shown in Appendix A. |