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 42 for “"process industry"”.
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Utility Disturbance Management in the Process Industry
Use of utilities, such as steam and cooling water, is very common at industrial sites. Utilities are often shared between several production areas, and a disturbance in the supply of a utility is therefore likely to affect a large part of the production site, and cause great loss of revenue. In …
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Factors affecting human reliability in the chemical process industry
… may influence human reliability within chemical process plants - these factors are referred to as Performance Shaping Factors (PSFs). Following a period of familiarization within the industry, a number of case studies were undertaken covering a range of basic influencing factors. Plant records …
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Advancing Human Performance Models for Enhancing Safety in Process Industry
L'abstract è presente nell'allegato / the abstract is in the attachment
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Hierarchical Scheduling and Utility Disturbance Management in the Process Industry
… deals with control of production at large-scale process industrial sites in the presence of disturbances. The main focus is on disturbances in the supply of utilities such as steam, cooling water and electricity. A general method for reducing the revenue loss due to disturbances in utilities is …
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Methodology for Assessing Learning from Incidents - a Process Industry Perspective
… considered one of the most important ways in the process industry to learn from experiences for improving safety performance. Most companies have a formal incident learning system and considerable resources are used for reporting incidents and for utilising these experiences to prevent future …
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Development of quantitative methods for sustainability assessment in process industry
… inherently safer and environmentally friendlier processes, besides assuring the economic competitiveness of the industrial activities. The different forms of impact (e.g. environmental, economic and societal) are frequently characterized by conflicting reduction strategies and must be …
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Simulation-based fault propagation analysis of process industry using process variable interaction analysis
… safety concerns in chemical and petrochemical process industry. The huge explosion of Nowruz oil Field platform that happened in Persian gulf-IRAN at 1983, along with other disastrous events have effected chemical industrial renaissance and led to high demand to enhance safety. Oil and chemical …
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Real time safety verification in the process industry using fault semantic networks (FSN)
In the process industry, there are uncertainties associated with each variable, which might lead to process deviations and hazards. In order to accurately quantify the risks associated with these hazard scenarios, quantitative probability should be calculated. The process dynamically changes during …
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Analysis and Design of Software-Based Optimal PID Controllers
A large process industry can have somewhere between five hundred and five thousand control loops, and PID controllers are used in 90–97% of the cases. It is well-known that only 20–30% of the controllers in the process industry are tuned satisfactorily, but with the methods available today it is …
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The effect of energy input on precipitation in an oscillating grid reactor
The move to cleaner production has led to the process industry aiming at producing chemicals in a pure form and at the lowest possible cost. In practice this has resulted in a shift from treating processes as "black boxes" towards developing more concise models which reveal what happens within …
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A structured approach to identification techniques for the analysis of industrial processes
Currently process industry faces a paradoxical situation. On the one hand there is the urgent need to optimise the performance of processes by increasing throughput, decreasing operating costs while increasing the product quality. On the other hand there are only few specialists in industry who are …
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A FIS Risk Analysis Approach as a Tool to Prioritize Risks
… applied to assess the risks in a drug dispensing process in a pharmacy, and also in a chemical process industry. The tool uses Bow-tie analysis and fuzzy concepts to analyze and prioritize a risk by computing its score. The risks, risk factors, and impacts were identified based on reported events …
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PID control of TITO systems
… two input signals and two output signals in the process industry. Two design methods that can be combined to form a core in an algorithm for automatic design and tuning for the considered systems are presented. The proposed controller consists of a decoupler and a diagonal PID controller. This …
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MODEL BASED SYSTEMS ENGINEERING APPROACH FOR COLLABORATIVE REQUIREMENTS IN COOLING WATER SYSTEM DESIGN
Evaluation of the manufacturing process industry confirms that there is still manual exchange of product data between design and procurement engineers and equipment suppliers. Manual data exchange incurs human error, increases the cost, and takes more time. Also manual data exchange prevents …
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Biomanufacturing Automation Plug & Play
In the biopharmaceutical industry today, the software of manufacturing equipment requires custom coding and lengthy efforts to integrate any new piece of equipment with others in a process. Plug-and-play is an evolving concept that would enable new equipment to quickly connect and seamlessly …
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Construction of a classification hierarchy for process underspecification to streamline life-cycle assessment
… assessment of the impact of various products and processes. Life cycle assessment (LCA), a quantitative assessment method, has been employed primarily to products, analyzing the energy inputs and environmental consequences for the manufacture and use of specific goods. While it has not seen …
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Electroplating process plant automation and management using emerging automation and communications technologies
The Electroplating (EP) process industry is currently facing some challenging process control problems in their production plant due to an insufficient level of automation being applied in the industry; the control is largely manual, and the monitoring of both plant and processes is ad hoc. The …
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Development and applications of novel optimal control algorithms
… on one hand for its implementation in the process industry and, on the other hand, as a novel nonlinear optimal control algorithm. The main feature of the technique is that it has been designed so as to achieve the correct optimum of the process in spite of inaccuracies in the mathematical …
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On Automation of the PID Tuning Procedure
Within process industry, and in many other areas, the PID controller is responsible for handling regulatory control. An educated guess is that the number of executing PID control loops lies in the billions (2011) and there are no signs indicating a decrease of this number. Properly tuning the PID …
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