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 79 for “"Decommissioning"”.
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Tritium speciation in nuclear decommissioning materials
… into the fabric of the buildings. When nuclear decommissioning works and environmental assessments are undertaken it is necessary to accurately evaluate tritium activities in a wide range of materials prior to any waste sentencing. Of the various materials comprising UK radioactive wastes, …
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Decision-support for decommissioning offshore platforms.
An estimated 2,500 offshore decommissioning projects are expected to be completed between 2018 and 2040 with significant accompanying challenges. In this research, a decision model for decommissioning offshore platforms is developed. The decommissioning decision model (DDM) aids logical …
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Decommissioning considerations for molten salt type reactors
… The current proposed designs do not document how decommissioning will be addressed. The decontamination activities necessary for these reactor technologies upon their shut-down are not available in the open literature. The intent of the experiments performed in this work is to investigate the …
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Study of contaminants in plasmas during decommissioning processes
… components are subjected to plasma-based decommissioning processes are developed. Two parallel plasma systems are developed and investigated. A better-understood argon plasma based system has temperature measurement methods developed, along with an exploration of the resultant behavior …
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Facing the Leadership Challenges on Decommissioning United States Navy Ships
… ships have been decommissioned. Although ship decommissionings were postponed immediately after the September 11th attack, today the Navy is again engaged in “rightsizing” its force. Depending on the type of ship and its age, a ship faces different fates after the decommissioning process has …
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An investigation into the forecasting of skills in nuclear decommissioning
… the nature of skills forecasting in nuclear decommissioning and that which makes skills forecasting information useful. The study adopts a pragmatic approach using an interpretative, qualitative case study research design and draws on aspects of a critical realist approach to uncover, …
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Optimising the decommissioning of pipeline protection structures in the North Sea
… whilst promoting a circular economy around decommissioning. Before investigating potential decommissioning scenarios, it is necessary to understand the spatial context and contamination status of mattresses. The overall aim of this thesis was to assess pipeline protection structure …
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Mechanistic Dissection of Tcf7l1-Dependent Enhancer Decommissioning During Exit from Naïve Pluripotency
… findings suggest that Tcf7l1-mediated enhancer decommissioning serves as a critical mechanism by which pluripotent cells rapidly alter the response to signaling pathways in preparation for gastrulation, and it may be a mechanism used in diverse cell types for modulating effects of Wnt/β-catenin …
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Decommissioning the UKCS: increasing flexibility of approach through proportionate regulation and evidence based practice.
… gain environmental benefit from the challenge of decommissioning redundant offshore oil and gas infrastructure, through an alternative evidence-based practice and proportionate regulatory approach. Despite nearly thirty years of periodic decommissioning activity, the regulatory drivers and …
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The emergence of sustainable decommissioning of buildings on nuclear licensed sites in the UK
… is concerned with the emergence of sustainable decommissioning practice for buildings situated on nuclear sites within the United Kingdom. It reports on developments within the Civil Nuclear Sector that have enabled sustainable practices to become embedded in current business functions. The …
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Characterization of PVA-Borax-fructose gel for the capture of radioactive wastes generated during nuclear decommissioning activities
… solid, liquid and gaseous waste generated from decommissioning works, characterization of gel properties as well as the properties of the individual constituents of polymer gels has been completed. Characteristics of constituents were investigated over varied concentrations and environments. …
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Remediation and restoration of ocean exposed cliff-top, in the context of Dounreay (Scotland) nuclear power plant decommissioning
… the Dounreay Nuclear Power Plant, now undergoing decommissioning. The intention is to restore cliff-top habitat with native vegetation, blending in with its surroundings and necessitating minimal maintenance. The overall objective of this PhD research was to help develop a plan for the restoration …
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RESTORATION OF NATIVE PLANT COMMUNITIES AFTER ROAD DECOMMISSIONING: EFFECT OF SEED MIX AND SOIL PROPERTIES ON VEGETATIVE ESTABLISHMENT
Road decommissioning is increasingly recognized as a critical first step in the restoration of terrestrial and aquatic habitats. In the past two years alone, the United States Congress has appropriated $90 million for road removal and watershed restoration. Despite this relatively large public …
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RESTORATION OF NATIVE PLANT COMMUNITIES AFTER ROAD DECOMMISSIONING: EFFECT OF SEED MIX AND SOIL PROPERTIES ON VEGETATIVE ESTABLISHMENT
Road decommissioning is increasingly recognized as a critical first step in the restoration of terrestrial and aquatic habitats. In the past two years alone, the United States Congress has appropriated $90 million for road removal and watershed restoration. Despite this relatively large public …
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Integrated Technologies for the Decommissioning of LWR Primary Systems: Cutting, Chemical Decontamination, and Conditioning of Spent Ion Exchange Resins
L'abstract è presente nell'allegato / the abstract is in the attachment
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Monte Carlo modeling and variance reduction technique applications for heavily shielded geometries in the decommissioning of nuclear power plants
L'abstract è presente nell'allegato / the abstract is in the attachment
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A study of the dose reduction benefits of electrostatic precipitation in the capture of radionuclide aerosols produced during decommissioning processes
Radionuclide aerosols are produced during nuclear decommissioning processes. These aerosols, if not controlled, can spread and impart a dose to workers and the environment. This work proposes the employment of electrostatic precipitators (ESPs) as area filters that capture radionuclide aerosols …
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The Decommissioning of Offshore Oil and Gas Installations and Structures in Nigeria and South Africa in the context of international best practices
… attempts to examine the laws relating to the decommissioning of offshore oil and gas installations and structures in Nigeria and South Africa, in the context of international best practices as typified by the regimes in operation in Norway and the United Kingdom. The extent to which these …
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