Analysis and assessment of a critical event during an underground coal gasification experiment

Krause, E.; Krzemień, Alicja; Smoliński, Adam

doi:10.1016/j.jlp.2014.12.014

Cited by 17 publications

(14 citation statements)

References 12 publications

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“…A fault tree may reveal the main causes of an accident and provide a basis for determining safety measures by subsequent qualitative and quantitative analysis of the tree. Fault tree analysis has been applied to explosion assessments in oil storage tanks [ 13 ], methane operations [ 14 , 15 ], air pollution-related fields [ 16 ] and traffic accidents [ 17 – 19 ]. The present study marks the first time that fault tree analysis has been introduced into sand casting safety assessment.…”

Section: Introductionmentioning

confidence: 99%

Sand casting safety assessment for foundry enterprises: fault tree analysis, Heinrich accident triangle, HAZOP–LOPA, bow tie model

Yao

et al. 2018

R. Soc. open sci.

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Sand casting operations, though commonplace, pose a significant threat of explosion accidents. This paper presents a novel sand casting safety assessment technique based on fault tree analysis, Heinrich accident triangle, hazard and operability–layer of protection analysis (HAZOP–LOPA) and bow tie model components. Minimal cut sets and minimal path sets are first determined based on fault tree analysis, then the frequency of sand casting explosion accidents is calculated based on the Heinrich accident triangle. Third, the risk level of venting quality can be reduced by adopting HAZOP–LOPA; the residual risk level of venting quality remains excessive even after adopting two independent protective layers. The bow tie model is then adopted to determine the causes and consequences of venting quality. Five preventative measures are imposed to enhance the venting quality of foundry sand accompanied by 16 mitigative safety measures. Our results indicate that the risk attributable to low foundry sand venting quality can be minimized via bow tie analysis.

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Section: Introductionmentioning

confidence: 99%

Sand casting safety assessment for foundry enterprises: fault tree analysis, Heinrich accident triangle, HAZOP–LOPA, bow tie model

Yao

et al. 2018

R. Soc. open sci.

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“…Only three EU countries are self-sufficient in terms of availability of this energy resources, i.e., the Czech Republic (−11.6 %), Estonia (−0.1 %) and Poland (−10.4 %) Table 3. Coal mining is a strategic sector of the Polish economy and plays a key role in ensuring the energy security of the country however, must be subject to a continuous process of restructuring in order to adapt to current market requirements (Burchart-Korol et al 2014; Dubiński and Turek 2014; Krause et al 2015; Bluszcz and Kijewska 2015; Kijewska 2016a, b; Blaschke and Gawlik 1999; Gawlik and Mokrzycki 2014; Brzychczy 2012; Kustra and Kubacki 2009; Kustra and Sierpińska 2008; Krzemień et al 2013; Jonek-Kowalska 2015; Nawrocki and Jonek-Kowalska 2016; Strozik et al 2016; Ranosz 2014). …”

Section: The Analysis Of the Energy Market Of The European Union Membmentioning

confidence: 99%

European economies in terms of energy dependence

Bluszcz

2016

Qual Quant

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The sustainable development and energy security are currently the priority challenges for the European Union countries. The sustainable and stable development of European economies is closely dependent on the stable access to energy resources. The constant increase of the demand for electricity requires long-term planning of the common European policy. The aim of the article is to analyse the fuel and energy resources situation of the member states with regard to their energy balances and with the determination of their import dependence in relation to fossil fuels, such as: coal, oil and natural gas. Based on the collected statistical data the analysis of clusters was presented in order to separate homogenous subsets, that is groups of the European Union Member States. The squared Euclidean distance has been adopted as the measure of similarities of the member states in the clusters, and the k-means algorithm has been used as the method of grouping. As a result of the analysis seven clusters were selected-groups of homogenous countries in terms of the import dependence due to the major energy resources (oil, natural gas and coal). The results of the paper can constitute bases for shaping the appropriate long-term common energy policy for the listed potential groups of countries. Statistical data were collected based on the Eurostat publication.

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“…The innovation of the proposed method lies in generating the composite importance of a basic event from the fundamental importance via grey relational analysis, while bow tie analysis reveals the most critical basic event. We used grey relational analysis and the bow tie model as an extension of previous studies on fault tree analysis [ 11 , 12 , 26 ]. To take different aspects of a single basic event into consideration, we used a composite importance for the single basic event as calculated by grey relational analysis.…”

Section: Introductionmentioning

confidence: 99%

Mine safety assessment based on basic event importance: grey relational analysis and bow tie model

et al. 2018

R. Soc. open sci.

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Safety assessments are a crucial first step in preventing coal and gas outburst accidents. The main purpose of this study was to create a new accident prevention technique using a novel safety assessment method based on fault tree basic event importance, grey relational analysis and the bow tie model. The innovation of the proposed method lies in generating the composite importance of a basic event from the fundamental importance via grey relational analysis; bow tie analysis serves to reveal the most critical basic event. First, the minimal cut sets and minimal path sets of a coal and gas outburst accident are determined by fault tree analysis. The role of minimal cut and path sets is determined and the coal and gas outburst occurrence frequency is calculated accordingly. Second, the structure, probability, critical and Fussell–Vesely importance ranked basic events differently due to different aspects of the basic events as investigated. We establish a composite importance to represent single basic events and achieved new ranking results by grey relational analysis. Third, the critical basic event low permeability coefficient is analysed via bow tie model and safety measures are defined which prevent the dangerous consequences of a low permeability coefficient. An actual coal and gas outburst accident is used as a case study to test the feasibility and effectiveness of the proposed method.

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Analysis and assessment of a critical event during an underground coal gasification experiment

Cited by 17 publications

References 12 publications

Sand casting safety assessment for foundry enterprises: fault tree analysis, Heinrich accident triangle, HAZOP–LOPA, bow tie model

Sand casting safety assessment for foundry enterprises: fault tree analysis, Heinrich accident triangle, HAZOP–LOPA, bow tie model

European economies in terms of energy dependence

Mine safety assessment based on basic event importance: grey relational analysis and bow tie model

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