نتایج جستجو برای: top event

تعداد نتایج: 324566  

Introduction: LPG storage tanks contain of large volumes of flammable and pressurized gases. Release of these fluids can lead to disastrous accidents such BLEVE, fiery explosion. Therefore, identifying the causes, consequences, probabilities and scenarios of accidents using Bowtie technique, that is combination of Fault Tree Analyses (FTA) and Event Tree Analyses (ETA), is imperative and the pu...

Journal: :international journal of marine science and engineering 2011
m. r. miri lavasani j. wang z. yang j. finlay

fault tree analysis (fta) as a probabilistic risk assessment (pra) method is used to identify basic causes leading to an undesired event, to represent logical relation of these basic causes in leading to the event, and finally to calculate the probability of occurrence of this event. to conduct a quantitative fta, one needs a fault tree along with failure data of the basic events (bes). someti...

Eskandari, Tahereh , Mirzaei Aliabadi, Mostafa , Mohammadfam, Iraj ,

Introduction: The safety of CNG stations is important because of their location in urban areas, as well as to prevent accidents and to protect the safety of personnel, property, and environment. An event occurrence analysis with probability updating is the key to dynamic safety analysis. Methods and materials: In this study, the Failure Modes and Effects Analysis (FMEA) technique was used to d...

Journal: :international journal of marine science and engineering 2011
m. kasaeyan j. wang i. jenkinson m. r. miri lavasani

the traditional event tree analysis uses a single probability to represent each top event. however, it is unrealistic to evaluate the occurrence of each event by using a crisp value without considering the inherent uncertainty and imprecision a state has. the fuzzy set theory is universally applied to deal with this kind of phenomena. the main purpose of this study is to construct an easy metho...

I. Jenkinson J. Wang M. Kasaeyan, M. R. Miri Lavasani

The traditional event tree analysis uses a single probability to represent each top event. However, it is unrealistic to evaluate the occurrence of each event by using a crisp value without considering the inherent uncertainty and imprecision a state has. The fuzzy set theory is universally applied to deal with this kind of phenomena. The main purpose of this study is to construct an easy metho...

Journal: :Journal of Physics: Conference Series 2013

ژورنال: سلامت و محیط زیست 2014
جوان, زیبا, جوزی, سید علی, عصمت ساعتلو, سید جعفر ,

Background and Objectives: Chemical spillage of equipment is possible in petrochemical processes. Occurrence of such event can result in firing and explosion and consequently would bring about some risks to the environment affected. The aim of this study was to assess environmental risks in Olefin Plant, Arya Sasol Petrochemical Company in order to identify environmental risks at producing sour...

Introduction: Emotional stimulus is processed automatically in a bottom-up way or can be processed voluntarily in a top-down way. Imaging studies have indicated that bottom-up and top-down processing are mediated through different neural systems. However, temporal differentiation of top-down versus bottom-up processing of facial emotional expressions has remained to be clarified. The present st...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تحصیلات تکمیلی علوم پایه زنجان - دانشکده علوم زمین 1388

three medium magnitude events happened inside the transitional border of south alborz and central iran; namely kahak-qom 2007/06/18 event with ml 5.6, zanjan 2008/05/27 event with ml 5.3 and aradan-garmsar 2007/11/19 event with ml 5.1. this provides us the opportunity to compute focal mechanism and stress drop of the events and compare them with those events happened within the alborz range.

Journal: :Irrigation & Drainage Systems Engineering 2015

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