Research and development activities waste fixation program. Quarterly progress report, January--March 1976

McElroy, J.L.

doi:10.2172/7143781

Cited by 3 publications

(6 citation statements)

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“…Coating thicknesses varied from 10 ~m to 120 ~m. (72) Temperatures of 900 to 1100 0 C were required for application of PyC coatings by methane and 1100 to 1350 0 C were required for SiC coatings by silane. The coated particles demonstrated good bonding, high strength, and excellent leach resistance.…”

Section: Coatingsmentioning

confidence: 99%

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Review of high-level waste form properties. [146 bibliographies]

Rusín¹

1980

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This report is a review of waste form options for the immobilization of high-level-liquid wastes from the nuclear fuel cycle. This review covers the status of international research and development on waste formS as of May 1979. Although the emphasis in this report is on waste form properties, process parameters are discussed where they may affect final waste form properties. A summary table is provided listing properties of various nuclear waste form options. It is concluded that proposed waste forms have properties falling within a relatively narrow range. In regard to crystalline versus glass waste forms, the conclusion is that either glass ~crystalline materials can be shown to have some advantage when a single property is considered; however, at this date no single waste form offers optimum properties over the entire range of characteristics investigated. A long-term effort has been applied to the development of glass and calcine waste forms. Several additional waste forms have enough promise to warrant continued research and development to bring their state of development up to that of glass and calcine. Synthetic minerals, the multi barrier approach with coated particles in a metal matrix, and high pressure-high temperature ceramics offer potential advantages and need further study. Although this report discusses waste form properties, the total waste management system should be considered in the final selection of a waste form option. Canister design, canister materials, overpacks, engineered barriers, and repository characteristics, as well as the waste form, affect the overall performance of a waste management system. These parameters were not considered in this comparison.

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Section: Coatingsmentioning

confidence: 99%

“…The coated particles demonstrated good bonding, high strength, and excellent leach resistance. (73,74) The high temperature for SiC deposition was a major disadvantage, considering potential radionuclide volatilization during processing. The calcine also displayed some reduction due to the PyC.…”

Section: Coatingsmentioning

confidence: 99%

Review of high-level waste form properties. [146 bibliographies]

Rusín¹

1980

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“…The coated particles demonstrated good bonding, high strength, and excellent leach resistance. (30,31) The high temperature for SiC deposition was a major disadvantage, considering potential radionuclide volatilization during processing. The calcine also displayed some reduction due to the PyC.…”

Section: Review Of Initial Coating Developmentmentioning

confidence: 99%

“…(32) The coating studies at Oak Ridge National laboratory involved the application of PyC on spray-calcined simulated waste. Coatings of good integrity were produced by starting at 850 0 C with acetylene and then switching to a mixture of methyl acetylene and propadiene at 1150 0 C. (33) In addition to PyC and SiC, technology for CVD of several other materials had been demonstrated by BCL. Thus, candidate materials in addition to PyC and SiC were selected for evaluation as coatings for the multibarrier concept.…”

Section: Review Of Initial Coating Developmentmentioning

confidence: 99%

Multibarrier waste forms. Part I. Development

Rusín¹,

Lokken²,

Lukacs³

et al. 1978

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Material 58 18. Superca1cine Substrate Densities 19. Tap Density and Sintered Density of Copper Spheres of Various Size Distributions (Sintered for 8 hr at 950 0 C in a dynamic vacuum) 20. Properties and Costs of Metal Matrix Candidates ix MULTIBARRIER WASTE FORMS PART I: DEVELOPMENT 4 Matrix EncaQsulation Pb-10Sn vacuum cast 400 0 C Al-12Si vacuum cast 650°C Al-12Si vacuum cast 650 0 C Cu gravity sintered 9000C-8 hr Uncoated supercalcine Vacuum-cast PyC/ Al20 3-coated supercaldne Glass-coated supercalcine Vacuum-cast Simulated wasteglass marbles Vacuum-cast FIGURE 2. Polished Sections of the One-Liter Multibarrier Demonstrations 9

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“…pl es. (5) The glass loading in the matrix was %60 ~01%. unfractured marbles for 10-mm waste glass, 6-mm and 3-mm chemical glass was 13.17%, 31.01%, and 76.35%, respectively.…”

Section: Visually No Significantmentioning

confidence: 99%

Research and development activities Waste Fixation Program. Quarterly progress report, January--March 1977

McElroy¹

1977

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Research and development activities waste fixation program. Quarterly progress report, January--March 1976

Cited by 3 publications

References 0 publications

Review of high-level waste form properties. [146 bibliographies]

Review of high-level waste form properties. [146 bibliographies]

Multibarrier waste forms. Part I. Development

Research and development activities Waste Fixation Program. Quarterly progress report, January--March 1977

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