کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7195406 1468218 2016 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Determining and verifying the safety integrity level of the safety instrumented systems with the uncertainty and security aspects
ترجمه فارسی عنوان
تعیین و تایید سطح ایمنی سیستم های ایمنی با جنبه های عدم اطمینان و امنیت
کلمات کلیدی
مدل سازی احتمالی، سطح ایمنی ایمنی، معیارهای مشترک، سطح اطمینان ارزیابی، ایمنی، امنیت، عدم قطعیت، سیستم ایمنی ابزار،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی
Safety and security aspects consist of two different group of functional requirements for the control and protection systems. In the paper it is proposed that the security analysis results can be used as a factor increasing or decreasing the risk level. It concerns a process of determining required safety integrity level of given safety functions. The authors propose a new approach for functional safety risk analysis. In this case the security factor influences the value of required safety integrity level SIL by changing the frequency of accident scenario. It can be done by using the methodology of modified risk graph. On the other hand there is a verification of required SIL fulfillment for designed safety-related system which implements safety function. In this case the result of security analysis is affecting uncertainty of probabilistic model parameters. The proposed method takes into consideration the sensitivity analysis of probabilistic models of E/E/PE or safety instrumented systems SIS as well as the uncertainty of probabilistic results. It uses differential factors, which are helpful for effective verification of required SIL of the E/E/PE or SIS systems taking into account results of sensitivity analysis and/or assessment of uncertainty ranges obtained from probabilistic models developed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reliability Engineering & System Safety - Volume 152, August 2016, Pages 259-272
نویسندگان
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