کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
806259 1468222 2016 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Time-dependent unavailability of equipment in an ageing NPP: Sensitivity study of a developed model
ترجمه فارسی عنوان
عدم دسترسی به تجهیزات وابسته به زمان در یک NPP سالم: مطالعه حساسیت یک مدل توسعه یافته
کلمات کلیدی
عدم دسترسی به زمان؛ تجهیزات ایمنی پیری؛ تجزیه و تحلیل میزان حساسیت
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی


• Calculation of time-dependent unavailability of an ageing NPP equipment.
• Sensitivity study of a previously developed model.
• Influence of the aggregation limiter on component unavailability calculation.

A previously developed model for assessing time-dependent unavailability of ageing safety equipment is briefly presented at the beginning of this paper. One of the essential features of this model is that it simultaneously considers the effects of ageing, testing, preventive and corrective maintenance and overhaul.The main focus of this paper is aimed towards performing sensitivity analysis of the developed model. A component level resolution is selected as the basis for performing the analysis. Investigation of the influence of different component-relevant input parameters on the calculated equipment unavailability is the goal of the analysis. The dependency of the calculated component unavailability on the corresponding surveillance test interval is of a particular interest. The focus is being given to one of the specifics of the developed model – the aggregation approach, i.e. the aggregation limiter that copes with the breach of computational memory.The results show that a relatively low value of the aggregation limiter implicates discrepancies in the shape of the component unavailability as a function of the surveillance test interval in some cases. These discrepancies are being substantially reduced with the increase of the value of the limiter. Consequently, longer computational time and higher memory requirements are directed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reliability Engineering & System Safety - Volume 148, April 2016, Pages 11–20
نویسندگان
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