Filters








13 Hits in 11.8 sec

Stochastic modeling and analysis of vapor cloud explosions domino effects in chemical plants

Diego Sierra, Leonardo Montecchi, Ivan Mura
2019 Journal of the Brazilian Computer Society  
In this work, we propose a stochastic modeling methodology to perform a probabilistic analysis of the likelihood of domino effects caused by propagating vapor cloud explosions.  ...  Our methodology combines mathematical models of the physical characteristics of the explosion, with stochastic state-based models representing the actual propagation among equipment units and the effect  ...  Felipe Muñoz Giraldo from the Department of Chemical Engineering of Universidad de los Andes to the conceptual formulation of the failure propagation model.  ... 
doi:10.1186/s13173-019-0092-8 fatcat:ye3qmkfnhjbrfkay4bnonqwv6q

Dynamic Vulnerability Assessment of Process Plants with respect to Vapor Cloud Explosions

Chao Chen, Nima Khakzad, Genserik Reniers
2020 Reliability Engineering & System Safety  
A B S T R A C T Vapor cloud explosion (VCE) accidents in recent years such as the Buncefield accident in 2005 indicate that VCEs in process plants may lead to unpredicted overpressures, resulting in catastrophic  ...  The developed methodology consists of six steps: (i) identification of hazardous installations and potential loss of containment (LOC), (ii) analysis of vapor cloud dispersion, (iii) identification and  ...  We also appreciate the anonymous reviewers and the editor for their constructive comments and suggestions.  ... 
doi:10.1016/j.ress.2020.106934 fatcat:otxcaeprg5b35jhosbai76fi6u

A Risk-based MILP Approach for Optimal Placement of Flammable Gas Detectors

A. Rad, D. Rashtchian
2016 Chemical Engineering Transactions  
Gas detectors play an important role in safety of process plants. In-time detection of flammable gas releases may prevent major fire and explosion as well as property loss in process plants.  ...  A risk-based methodology is proposed for optimal placement of point type flammable gas detectors in which first the risk (defined as a combination of scenario frequency, delayed ignition probability and  ...  Vapor Cloud Explosion (VCE) and flash fire are reportedly the most serious outcomes of delayed flammable gas release detection, and the ultimate goal of a detection systems is normally set on VCE and flash  ... 
doi:10.3303/cet1653025 doaj:b92b7e1c2c9048ccbaa52401c7cc3a3b fatcat:c3zsubkfx5f27p5bkgruetbkhi

Comparison of Risk-based Maintenance Approaches Applied to a Natural Gas Regulating and Metering Station

Leonardo Leoni, Filippo De Carlo, Fabio Sgarbossa, Nicola Paltrinieri
2020 Chemical Engineering Transactions  
In the second technique, Hierarchical Bayesian Network (HBN) is adopted to estimate the probability of failure components, while the severity is assessed via Failure, Mode, Effects and Criticality Analysis  ...  In the last decades, many researchers have directed their efforts towards the safety improvement of plants where hazardous substances are processed or handled.  ...  fires, pool fires, fireballs or Vapor Cloud Explosions (VCE).  ... 
doi:10.3303/cet2082020 doaj:326311d0e5004939bef8a432ed4a5d93 fatcat:xy42iwpfnfdbpfn7n6d4s3yzpe

Safety Related Challenges when Designing Sustainable Cities

Göran Nygren, Björn Yndemark, Johan Lundin
2019 International Journal of Applied Science  
A risk analysis approach used in an ongoing project in the final stage of the planning process, which makes it possible to discuss experiences and difficulties based on work in practice.  ...  This paper presents challenges, experiences and results in connection with the analysis of the risks associated with an underground bus terminal operated with gas-powered buses.  ...  (UCVE), pressure vessel explosion and domino effects.  ... 
doi:10.30560/ijas.v2n3p25 fatcat:lfhe3kxbb5g2rkdiql6oyzuxbm

Process hazard analysis, hazard identification and scenario definition: Are the conventional tools sufficient, or should and can we do much better?

Ian Cameron, Sam Mannan, Erzsébet Németh, Sunhwa Park, Hans Pasman, William Rogers, Benjamin Seligmann
2017 Chemical engineering research & design  
Today, properties of materials are not regarded as a problem but 50 years ago they were. Many test methods did not yet exist. Phenomena such as runaway or vapor cloud explosion were unknown.  ...  Domino effects due to blast, fragments/projectiles, and/or jets/flooding originating from a primary event should in a risk assessment be handled in a subsequent analysis.  ... 
doi:10.1016/j.psep.2017.01.025 fatcat:vupycsf63jgcrdml2wslta2vva

Development of methodology for treating pressure waves from explosions accounting for modeling and data uncertainties [article]

Arizal, Universitäts- Und Landesbibliothek Sachsen-Anhalt, Martin-Luther Universität, Ulrich Hauptmanns
2018
I thank him for introducing me to this exciting field of study. His lively, enthusiastic and energetic has always inspired me in my career and life.  ...  I would like to thank the other members of the promotion committee, in particular to Professor Axel Schönbucher, the University of Duisburg-Essen, and Dr. Bernd Broeckmann, the Managing  ...  Vapor cloud explosions in history As stated earlier, the vapor cloud explosion is considered the most devastating and destructive event that may happen in typical chemical process and production plants  ... 
doi:10.25673/3857 fatcat:4kxt2uztwvepjpjxzc7yr4mwry

CASCADING EVENTS TRIGGERING INDUSTRIAL ACCIDENTS: QUANTITATIVE ASSESSMENT OF NATECH AND DOMINO SCENARIOS

Amos Necci
unpublished
In this chapter three main topics are analyzed: the analysis of past accidents, the development of fragility models for process equipment and the development of risk analysis and safety management methods  ...  In this thesis, a state of the art of available approaches to the modelling, assessment, prevention and management of domino and NaTech events is described.  ...  Vapor Cloud Explosion are considered.  ... 
fatcat:qqkiyinq7nbh3bx27cqwzq32xe

Volume 56, Number 1 (January 2003)

Editorial Board
2003 Journal of range management  
However, any interpretations and conclusions represented above obviously remain those of the authors. Manuscript accepted 20 Oct. 2002.  ...  Fay, and K.M. Havstad. Acknowledgments We are indebted to the helpful suggestions and comments provided by George W. Brown III, Sherri L. Johnson, and a third reviewer.  ...  The statistical model selected for the analysis was a mixed effects repeated measures factori-al experiment design.  ... 
doi:10.2458/azu_jrm_v56i1_board fatcat:of67uuzdjfae5bybokfmh6252e

Pushing gravity: new perspectives on Le Sage gravity [article]

Victor Christianto, Matthew R. Edwards
2020 Figshare  
After a chaotic period featuring vortex ether models and the like, gravity was at last put on a firm scientific footing by Newton.  ...  In the following centuries Newton's theory saw success after success, until a few unexplained anomalies, such as the advance of the perihelion of Mercury, paved the way for Einstein's General Relativity  ...  This procedure naturally would cancel the differing effects upon different fault structures, and result in the display of a negligibly small correlation."  ... 
doi:10.6084/m9.figshare.12387275.v1 fatcat:2s447ekqybambi2fib5cnamlfi

Power pulsing of the CALICE tile hadron calorimeter

Mathias Reinecke
2016 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop (NSS/MIC/RTSD)  
I will also discuss the complementary experimental approaches being adopted by the Hyper-Kamiokande experiment in Japan and the JUNO experiment in China.  ...  This achievement was recognised through the award of the 2015 Nobel prize for physics to the leaders of the SNO and Super-Kamiokande experiments for the conclusive establishment of the phenomenon of neutrino  ...  All these issues can be reduced using event-by-event measurement approach along with technique of spatial and temporal coincidence and simple model of charge collection.  ... 
doi:10.1109/nssmic.2016.8069748 fatcat:zjgd7dmfdbhntb4kfwdtrlejhi

INTEROPERABILITY FOR MODELING AND SIMULATION IN MARITIME EXTENDED FRAMEWORK [article]

GIOVANNI LUCA MAGLIONE
2019
A variety of techniques and methodology have been fruitfully applied in the researches, ranging from interoperable simulation, discrete event simulation, stochastic simulation, artificial intelligence,  ...  decision support system and even human behaviour modelling.  ...  The complexity due to the explosive nature of the context, the long-term effects of the decisions overpassing human horizons and the presence of multiple interactions and stochastic factors make it evident  ... 
doi:10.15167/maglione-giovanni-luca_phd2019-05-22 fatcat:z72k7oc76fd7nhr5wo32oqpzwi

DOAS spectroscopy onboard the CARIBIC passenger aircraft – trace gas concentration, and flux measurement of localized sources

David Josef Walter
2013
The results of these measurements are presented with focus on SO 2 and NO 2 , which were observed in the downwind plumes of large industrial plants and cities.  ...  Using flux calculations, the emission of SO 2 from a nickel smelter in Norilsk (Siberia) and the NO 2 emission of the city of Paris are estimated.  ...  This allows detailed analysis of the chemical and physical processes taking place in the UTLS itself or in the 'history' of the probed air masses.  ... 
doi:10.11588/heidok.00015440 fatcat:yxgz4dxotbcileelrur2sihdcu