Abstract




 
   

IJE TRANSACTIONS C: Aspects Vol. 31, No. 9 (September 2018) 1487-1497    Article in Press

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  A PRIORITIZATION MODEL FOR HSE RISK ASSESSMENT USING COMBINED FAILURE MODE AND EFFECT ANALYSIS (FMEA) AND FUZZY INFERENCE SYSTEM: A CASE STUDY IN IRANIAN CONSTRUCTION INDUSTRY
 
A. Ardeshir, P. Farnood Ahmadi and H. Bayat
 
( Received: December 27, 2017 – Accepted in Revised Form: April 26, 2018 )
 
 

Abstract    The problem of insufficient data and uncertainty in modeling play a significant role in many engineering and management problems. Therefore, applying some techniques and decision-making processes is essential to attain proper solutions for aforementioned problems under accurate consideration. In this paper, an application of fuzzy inference system for modeling the indeterminacy involved in the problem of HSE risk assessment is presented. For this purpose, Failure Mode and Effect Analysis (FMEA), one of the most practical techniques with high reliability in HSE risk assessment is integrated with fuzzy inference system. The proposed model is executed according to the Mamdani algorithm and fuzzy logic toolbox of MATLAB software. With respect to a case study, a comparison between the proposed model and common FMEA risk assessment approach is made for prioritization of the HSE risks. The selected HSE risk factors which were analyzed are listed in three categories as follows: (a) health risks; (b) safety risks and (c) environmental risks. Based on the proposed model, falling and slipping of workers grouping with safety risks is ranked as the first serious risk with the risk priority number of 0.7938 and skin injury which is classified with health risks is considered as an inconsiderable risk with the lowest risk priority number of 0.0223. Ultimately, by applying the method on a case study, the results indicate that the proposed model by considering economic aspects as an intelligent risk evaluation tool provides more detailed and precise results.

 

Keywords    FMEA, Fuzzy Inference System, HSE Risk Assessment, Mamdani Algorithm, Construction Industry

 

چکیده   

مسئله عدم دسترسی به اطلاعات کافی و عدم قطعیت در مدل‌سازی، نقش قابل توجهی در بروز مشکلات مهندسی و مدیریتی ایفا می‌کند. از این‌رو، بکارگیری تکنیک‌ها و فرآیندهای تصمیم‌گیری به منظور دستیابی به راه‌حل‌های مطمئن برای حل مسائل موجود تحت یک سنجش دقیق ضروری است. در این مقاله، کاربرد یک سیستم خبره فازی (FIS) برای مدل‌سازی عدم قطعیت موجود در بررسی ریسک‌های HSE مورد تحلیل قرار گرفته است. برای رسیدن به این منظور، از ترکیب یک تکنیک کاربردی با قابلیت اطمینان بالا در تحلیل ریسک‌های HSE به نام روش تجزیه و تحلیل عوامل شکست (FMEA) و سیستم خبره فازی (FIS) استفاده شده است. مدل پیشنهادی بر اساس الگوریتم ممدانی و ابزار منطق فازی موجود در نرم‌افزار متلب اجرا می‌شود. با توجه به مطالعه موردی، مقایسه‌ای بین آنالیز ریسک‌های HSE بر اساس مدل پیشنهادی و روش متداول FMEA انجام شده است. ریسک‌های مورد بررسی در سه بخش ایمنی، بهداشت و سلامت، و محیط زیست دسته‌بندی شده‌اند. طبق نتایج بدست آمده از مدل پیشنهادی، لغزش و افتادن کارگران جدی‌ترین ریسک با اهمیت بالا شناخته شده است که نمره اولويت خطرپذيري آن برابر با 7938/0 می‌باشد. درحالی که جراحت پوستی به عنوان کم‌اهمیت‌ترین ریسک شناسایی شده است که نمره اولويت خطرپذيري آن 0223/0 بدست آمده است. در نهایت با بکارگیری مدل پیشنهادی در آنالیز ریسک‌های مطالعه موردی، نتایج بدست آمده نشان می‌دهند که مدل پیشنهادی به عنوان یک سیستم هوشمند ارزیاب ریسک با در نظر گرفتن جنبه‌های اقتصادی نتایج دقیق‌تری را ارائه می‌دهد.

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