Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 12 of 12 for “"HAZOP"”.
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Expert systems for fault tree synthesis
Hazard and operability (HAZOP) studies on chemical process plants are very time consuming, and often tedious, tasks. The requirement for HAZOP studies is that a team of experts systematically analyse every conceivable process deviation, identifying possible causes and any hazards that may result. …
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Real-time process plant fault diagnosis
… are obtained from a hazard and operability (HAZOP) study on the process plant. The result of the HAZOP study is recorded as cause and symptom equations which are translated into a data structure and stored in the computer as a file for the package to access. Probability values are assigned to …
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Reliability Analysis for Hazard and Operability Studies
… is used as a tool within hazard and operability (Hazop) studies. The present study proposes a new methodology for obtaining the exact TOP event probability of coherent fault trees. The technique uses a top-down approach similar to that of FATRAM. This new Fault Tree Disjoint Reduction Algorithm …
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Modelling framework for assessing nuclear regulatory effectiveness
… demonstrates that the hazard and operability (HAZOP) technique, used in the nuclear industry to identify hazards associated with an activity, can be adapted to qualitatively assess the robustness of organisational processes. The HAZOP method was applied to the ONR inspection process and led to …
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Expert systems for fault analysis
… support for Fault Analysis in general, covering HAZOP, Fault Tree Analysis, FMEA and Fault Diagnosis in the Process Industries. This thesis described a proposed architecture for such an Expert System. The purpose of the System is to produce a descriptive model of faults and fault propagation from …
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The Development of a Semi-Open Refrigeration Cycle for the Crystallisation of Aqueous Salts
… Sulphuric Acid and Liquid Butane, a substantial Hazop and HAZAN study has been carried out. <br/><br/>From this data the pilot plant was constructed, with all necessary safety features. Computer monitoring and partial computer control was installed.<br/><br/>The pilot plant was operated as a …
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Analysis of Health and Safety Risk Assessment in Manufacturing Industry: A Case Study of Tanzania Breweries Limited
… job observation (PJO) and hazard operability (HAZOP). Based on the findings it is recommended that health and safety risk assessment should be entrenched at shop flow level in order to reduce lost time injuries. The following suggestion should be taken into consideration, training and education …
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Novel supercritical biodiesel plant design & process scale-up
… A comprehensive design package includes the HAZOP study, control narrative, P&ID, process simulation and a conceptual 3D sketch"-- Abstract, p. iii</p>
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CO AND CO2 HYDROGENATION BY FISCHER TROPSCH SYNTHESIS PROMOTED WITH IRON BASED HETEROGENEOUS CATALYSIS: DATA COLLECTION AND PROCESS DESIGN
… evaluated through Life Cycle Assessment (LCA), HAZOP/LOPA safety analysis, and artificial intelligence tools (artificial neural networks) for performance optimization. This integrated approach provides a comprehensive perspective on CO/CO2 conversion, representing an important step toward the …
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Contributions to the foundations of a safety case for the use of GNSS in railway environments
… critical analysis techniques such as FMEA, HAZOP and FTA are reviewed to illustrate the evaluation of safety integrity values and the possibility of system risk, leading to the formation of a structured safety case. Three main data sets from electrified, rural and urban rail environments …
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Risk-modeling tools for designing resilient micro energy grids
… This study develops a hazard and operability (HAZOP) matrix for MEGs by proposing a resilience matrix. In addition, it proposes two advanced risk-modeling approaches, namely fault tree and layer of resilience analysis (LORA), for risk and resilience analysis of MEG. Selected independent …
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On the safety of LNG-fuelled ships
… to the recommendations produced by a benchmark HAZOP study and selective quantitative risk assessment method.;This project established and demonstrated the way that the quantitative risk assessment techniques can be used to investigate the safety of a variety of novel marine LNG plants. A series …