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 20 of 25 for “"Quantitative Risk Assessment"”.
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Advanced Quantitative Risk Assessment of Offshore Gas Pipeline Systems
… identified in the research are associated with risk modelling under circumstances where the lack of data or high level of uncertainty exists. This PhD research adopts an object-oriented approach, a natural and straightforward mechanism of organising information of the real world systems, to …
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Nonparametric Statistical Approaches for Benchmark Dose Estimation in Quantitative Risk Assessment
A major component of quantitative risk assessment involves dose-response modeling. Therein, an appropriate statistical model that approximately quantifies the relationship between exposure level (dose) and response (adverse endpoint) is fit to experimental data. The objective of this dissertation …
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Novel application of quantitative risk assessment modelling to a continuous fermenter
In food and pharmaceutical industries plant failure can be costly and sometimes catastrophic to public health. This thesis uses the notion of Friday 13th Syndrome, ie. the unexpected failure of a well-operated plant, to develop a new and rigorous mathematical model of a generalised, continuous …
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Quantitative risk assessment in drill casing design for oil and gas wells
… to the traditional working stress design (WSD), Quantitative Risk Assessment (QRA) provides the methodology for quantifying the risk of the design for a particular scenario. The full QRA methodology was discussed and a mathematical model, based on Generalised Pareto Distribution (GPD) and …
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Quantitative risk assessment of pesticides in drinking water under current and future climates
Risk assessment approaches have become critical for pesticide risk management and mitigation. Despite this, scientists and pesticide regulators have acknowledged the need to improve representation of variability in input data, and uncertainty in pesticide fate processes in existing approaches. …
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A quantitative risk assessment of exposure to nitrates in drinking water and thyroid disorders in East Anglia, United Kingdom
… nitrates in drinking water and goitre, the risk assessment framework was used to estimate lifetime excess risk of thyroid cancer in East Anglia given widespread nitrate contamination of drinking water sources in the region. Thyroid cancer was used as a proxy for goitre given that malignancy …
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Exploring the current methods used to improve the safety of autonomous agricultural machines and evaluating the effectiveness and applicability of a more quantitative risk assessment method
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-02-04 without embargo terms
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On the safety of LNG-fuelled ships
… particular, they lack explicit requirements in quantitative terms.;It is true that there are rules and guidance for design and operation of LNG process systems in chemical industry with a relatively long history, and they can to some extent be used to safeguard the use of LNG as a fuel, but the …
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Models and Methodologies to Address Emerging Needs in Network and Supply Chain Optimization
… for the problem. Finally, Chapter 4 pursues a quantitative risk assessment of the complete poultry supply chain in China. This work is supported by collaborators in biological engineering, poultry science and numerous companies and universities throughout China. This effort considers …
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A risk management process for complex projects
… to identify, assess, track and document project risks was explored. Using the systems engineering approach, an adaptable, repeatable risk management process was designed for complex projects (typically multi-million dollar electronics I defense contracts with advanced technology, aggressive …
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An Evaluation of Different Risk Ranking Systems for Contaminated Sites
Risk ranking systems for contaminated sites have been developed by different jurisdictions with similar purpose, but it is not clear whether they provide results that are comparable. The United States’ Preliminary Assessment (PA) system, Sweden’s Methods for Inventories of Contaminated Sites (MICS) …
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Web-Based and Geospatially Enabled Tool for Water and Wastewater Pipeline Infrastructure Risk Management
Advanced pipeline risk management is contingent on accurately locating the buried pipelines, the milieu, and also the physical condition of the pipelines. The web-based and geospatially enabled tool presented in this thesis provides an improved way to assess the risks associated with the failure of …
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A methodology for the identification of critical locations in infrastructures
… and involves various disciplines including quantitative risk assessment and decision analysis. The methodology is illustrated through the presentation of a portion on the analysis conducted on the community of the Massachusetts Institute of Technology.
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Unified architecture of mobile ad hoc network security (MANS) system
… of the data traffic in the networks. Finally, quantitative risk assessment model is proposed to numerically evaluate MANS security.
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Investigating new accident causation, risk assessment, and mitigation strategy selection tools in the petroleum industry
… to identify, evaluate, and mitigate potential risks that can negatively impact their process operations. Additionally, government agencies and nonprofit professional societies guide the petroleum industry with regulatory guidelines, standards, and recommended best practices. The industry and …
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The development of automatic fire protection methods for computing and telecommunications areas
… fundamental reasons why companies implement fire risk management for their essential information technology systems. For many years a key element used to protect these critical assets was the installation of a fixed Halon 1301 gas extinguishing system. Often, the mere presence of a computer was …
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Sequencing Abandoned Wellsite Reclamations
… indicator and is estimated using preliminary quantitative risk assessment methods. Data supporting this assessment is from publicly available environmental reports on completed wellsite reclamations. Adverse public responses to abandoned wellsites are treated as indicators of negative social …
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Development of a Framework for Integrated Oil and gas Pipeline Monitoring and Incident Mitigation System (IOPMIMS)
… countries including Germany and the UK. The risks posed by these third-party activities on Oil and Gas pipelines are enormous and could be measured in terms of financial costs, environmental damages as well as health and safety implications. The quest for an end to these malicious activities …
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Model-Based Safety Assessment of Industrial Automation Systems using IEC 61499
… demonstrate the that these systems mitigate the risk to human lives, as much as reasonably possible. IEC 61508 is a standard of functional safety for generic electric, electronic, and programmable electronic (E/E/PE) systems and is used as the principal guide in this thesis. IEC 61508 adopts a …
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Epidemiological Models to Inform the Design And Evaluation of Official Plans for Risk-Based Surveillance of Foreign Hemorrhagic Fevers of Swine
… swine fever (CSF), and how to calculate the risk of introduction, as well as measures for early detection in case of incursions in free areas. This document is divided into chapters. Chapter 1 includes the introduction of the thesis, where the characteristic of the diseases of concern are …
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