Waste packages

I mentioned that new computer codes - RAFSCATT 1 and RAF-SCATT 2 have been very recently formulated by Dr. Gary Jacobs and Mr. William Anderson of Rockwell Hanford s Basalt Waste Isolation Project. These codes relate required engineered barrier (i.e., waste packages and seals performance to draft NRC and EPA criteria). A key part of these codes is that they partition... [Pg.449]

Computer codes, RAFSCATT 1 and RAFSCATT 2, waste packages... [Pg.457]

Seals performance and waste packages, computer codes,... [Pg.473]

LIFE CYCLE ANALYSIS OF RECYCLING AND RECOVERY OF HOUSEHOLDS PLASTICS WASTE PACKAGING MATERIALS. SUMMARY REPORT APME... [Pg.55]

WASTE PACKAGING REPLACES HEAVY OIL IN BLAST FURNACE Colvin R... [Pg.81]

The Mina Fe deposit at Salamanca, Spain, presents an interesting potential analogue for waste package interactions with SNF. The oxidized zone has a large abundance of Fe(III) and Mn-Fe oxyhydroxides (Perez del Villar et al. 2002). [Pg.84]

Jollivet, P., Nicolas, M. Vernaz, E. 1998. Estimating the alteration kinetics of the French vitrified high-level waste package in a geologic repository. Nuclear Technology, 123, 67-81. [Pg.409]

Subclassifications of Fuel-Cycle Wastes. As shown in the third level of the hierarchy in Figure 1.1, transuranic waste and low-level waste are further divided into different subclasses. The subclassification of transuranic waste as contact handled or remotely handled is based on the level of external radiation in contact with a waste package. This subclassification is related to requirements for protection of workers during waste operations, but it is not related to requirements for protection of the public following disposal. [Pg.13]

Concentrations of long-lived, alpha-emitting radionuclides restricted to 4 kBq g 1 in individual waste packages and average of 0.4 kBq g 1 over all waste packages... [Pg.18]

If colloids generated by waste package component interactions readily flocculate or are otherwise removed from solution soon after formation, they may not represent a waste management problem because colloidal transport of radionuclides would be limited. [Pg.71]

Such a mechanism would require modifications to some concepts of solubility controlled release. This report concerns a preliminary effort to determine some of the sorption properties of colloidal species representative of those formed during waste form/waste package interaction tests. Sorption of actinides and Tc on those colloids as a function of pH at 25°C was studied. [Pg.71]

Radionuclide release rates from the waste package... [Pg.147]

Benson, L. V. Teague L. S. "A Tabulation of Thermodynamic Data for Chemical Reactions Involving 58 Elements Common to Radioactive Waste Package Systems, Topical Report No. 4 for Rockwell Hanford Operations, LBL-11448, Lawrence Berkeley Laboratory, University-ofCalifornia, Berkeley, California, 1980. [Pg.163]

Since crushed basalt has been recommended as a major backfill component (1), experiments were completed to evaluate the rate of dissolved oxygen consumption and the redox conditions that develop in basalt-water systems under conditions similar to those expected in the near-field environment of a waste package. Two approaches to this problem were used in this study (l)the As(III)/As(V) redox couple as an indirect method of monitoring Eh and (2) the measurement of dissolved oxygen levels in solutions from hydrothermal experiments as a function of time. The first approach involves oxidation state determinations on trace levels of arsenic in solution (4-5) and provides an estimate of redox conditions over restricted intervals of time, depending on reaction rates and sensitivities of the analyses. The arsenic oxidation state approach also provides data at conditions that are more reducing than in solutions with detectable levels of dissolved oxygen. [Pg.179]

Temperature-time calculations (27) indicate that, initially, the waste package will be at temperatures of >100°C for hundreds of years. Thus, the rates of oxygen consumption and establishment of reducing conditions, as determined in this study, are rapid compared to these times. [Pg.188]

The experimental results of this study may also be applicable to processes occurring in the disturbed rock zones around a waste package. The surface area/volume ratio for these experiments is approximately equivalent to the solution in a 10-pm-wide planar fracture (33). With a fracture abundance of... [Pg.188]

Waste Package Concepts for Use in the Conceptual Design of the Nuclear Waste Repository in Basalt, AESD-TME-3142, Westinghouse Electric Co., Pittsburgh, Pennsylvania, for Battelle Project Management Division, Office of Nuclear Waste Isolation, Sept., 1982. [Pg.191]

Migration of contaminated groundwater has been identified as the principal mechanism for radionuclide transport from a repository to the biosphere. Over the lifetime of the repository, it is assumed that groundwater will become contaminated as the result of hydrothermal reactions and interactions within and near waste packages. [Pg.194]

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