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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 88 for “"radioactive waste"”.
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The geochemistry of radioactive waste disposal
… affect radionuclide migration from a low level radioactive waste disposal site located in a clay deposit. From initial sorption studies on smectite minerals, increased Kd with decreasing initial cation concentration was observed, and three sorption mechanisms were identified. The observation of …
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Economic Aspects of Radioactive Waste Management
The prevailing low-level radioactive waste disposal facility siting paradigm has achieved very limited success, despite expensive cooperative efforts undertaken across a number of states. I begin this dissertation by exploring possible weaknesses in the paradigm's economic foundation, both with …
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Characterization of pozzolanic cement for radioactive waste disposal
… material for permanently encasing high-level radioactive waste (HLW) and spent-nuclear fuel (SNF) in disposal canisters. This particular cement was produced by mixing lime or portland cement with volcanic tuff, a natural pozzolanic material extracted from Yucca Mountain, Nevada; …
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The regulation of low-level radioactive waste in Massachusetts
Thesis (M.C.P.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 1983.
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Integrated optimization approach for plasma-based radioactive waste treatment process
… (ICP) torch for low- and intermediate-level radioactive waste treatment purposes. Traditional segregated optimization approaches fail to capture the complex multiphysical interactions between fluid flow, plasma behavior, and waste processing. The proposed framework couples computational fluid …
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Predicting radioactive waste glass properties with machine learning and modelling
… which currently vitrifies its high-level radioactive waste (HLW), ultimately in preparation for deep geological disposal. This data has largely been collected in isolation, and there has been an open question whether this data could be of value when used collectively. With this motivation, …
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Dealing with Uncertainty in Low Level Radioactive Waste Disposal Facility Design
Made available in DSpace on 2017-07-06T18:59:20Z (GMT). No. of bitstreams: 3 Weger_Hans_T_MS.pdf: 66174452 bytes, checksum: 41b783b0b565f9582e3ae2043583f08e (MD5) Weger_Hans_T_MS_ABS.pdf: 466599 bytes, checksum: 577766c083182d8def0f94c9e5d9130a (MD5) license.txt: 4813 bytes, checksum: …
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Study of the Radionuclide Composition of Radioactive Waste Streams in the Nuclear Power Plant /
… the work was to develop a model of formation of radioactive waste streams in the Ignalina NPP technological media and methodology for assessment of the radionuclide composition. In the dissertation, formation of radioactive waste streams in the Ignalina Nuclear Power Plant is analyzed, …
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A Low Level Radioactive Waste Volume and Activity Projection for the Clinton Power Station
Made available in DSpace on 2017-07-06T18:59:19Z (GMT). No. of bitstreams: 3 Weber_Roger_D_MS.pdf: 81252897 bytes, checksum: 1868ca1df12b51e1d9f01aad298ed739 (MD5) Weber_Roger_D_MS_ABS.pdf: 962946 bytes, checksum: e8c1b2ef4c5c9935e30be09193d63d71 (MD5) license.txt: 4813 bytes, checksum: …
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Fluid Flow and Energy Transport in a High-Level Radioactive Waste Repository in Unsaturated Alluvium
… might be suitable for disposing of high-level radioactive wastes. This thesis examines the possible effects of a strong heat source on temperature and the movement of water (vapor and liquid) in a repository located in unsaturated alluvium. The partial differential equations governing the …
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Radiation Shielding Design and Radioactive Waste Assessment of Horizontal Compact High Temperature Gas-Cooled Reactor
… of Incoloy 800H was characterized as a class C waste component after 40 years of reactor operation. It was proposed that 2.25Cr-1Mo alloy be considered as barrel material to decrease activity levels. The reactor pressure vessel (RPV) and RCCS tubes made of carbon steel were characterized as a …
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Geomechanical aspects of Sintered Silicon Carbide (SSiC) waste canisters for disposal of high level radioactive waste
High-level radioactive waste (HLW) poses threat to the biosphere. Geological disposal is accepted as a safe way for HLW disposal. Waste canisters made of Sintered Silicon Carbide (SSiC) are proposed and geomechanical safety aspects relating to such SSiC canisters are investigated. First part of the …
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The pre-negotiation phase of regulatory negotiation : the case of the low-level radioactive waste rule
Thesis (M.C.P.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 1984.
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Application of a passive electrochemical noise technique to localized corrosion of candidate radioactive waste container materials
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1994.
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Post-Closure Silica Transport in the Proposed High Level Radioactive Waste Repository at Yucca Mountain, Nevada
The United States plans to bury high level radioactive waste from commercial power reactors and from nuclear weapons manufacturing in Yucca Mountain, Nevada. Yucca Mountain, located about 80 miles northwest of Las Vegas, consists of horizontally bedded tuff deposits. Although the region is very …
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Developing an understanding of the relationship between the durability of simplified and complex UK radioactive waste glasses
Safely disposing of radioactive waste glass within a geological disposal facility requires a thorough understanding of the kinetics and mechanisms of their aqueous dissolution over geological timescales. Whilst a significant number of studies have taken place on international waste glass …
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The role of accessory minerals in inhibiting bentonite erosion in the geological disposal of higher activity radioactive waste
… in the approval of safety cases for disposal of radioactive waste in crystalline rock. Currently, quantitative mass loss assessments are based on a 100% montmorillonite buffer and lead to unacceptable mass loss predictions. In practice however, the buffer will be comprised of ≈80% montmorillonite …
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Investigating the effects of magnesium on the structure and durability of radioactive waste glasses by solid-state NMR
Radioactive waste glasses containing Mg have been shown to have much poorer (~one order of magnitude) aqueous durability in long-term, compared with those have a similar amount of Ca as the alkaline-earth constituent. This is the case between two non-radioactive research surrogates: MW glasses …
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