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[en] In qualified processes, process-related characteristics or process parameters can occur (e.g.: the ability of the fixing material used to flow), by the inspection of which compliance with certain requirements of the final store is ensured and which are individually determined for the type of waste and conditioning plant concerned in the qualification of a conditioning process. There is an explanation of which properties and characteristics are to be determined or to be inspected in qualified processes, and how one judges, by test criteria, whether the requirements of the final store are being complied with. (orig.)
[de]Bei qualifizierten Verfahren koennen prozessbezogene Kenngroessen oder Verfahrensparameter auftreten (z.B. die Fliessfaehigkeit des verwendeten Fixierungsmittels), durch deren Kontrolle die Einhaltung bestimmter Anforderungen des Endlagers sichergestellt wird, und die bei der Qualifizierung eines Konditionierungsverfharens individuell fuer die jeweilige Abfallart und Konditionierungsanlage festgelegt werden. Es wird erlaeutert, welche Eigenschaften und Kenngroessen bei qualifizierten Verfahren zu ermitteln bzw. zu kontrollieren sind, und wie anhand von Pruefkriterien beurteilt wird, ob die Anforderungen des Endlagers eingehalten werden. (orig.)
[en] As part of the DWPF Startup Test Program, a parametric study has been performed to determine a range of welder operating parameters which will produce acceptable final welds for canistered waste forms. The parametric window of acceptable welds defined by this study is 90,000 ± 15,000 lb of force, 248,000 ± 22,000 amps of current, and 95 ± 15 cycles (at sign 60 cops) for the time of application of the current
[en] DOE-NE separations research is focused today on developing a science-based understanding that builds on historical research and focuses on combining a fundamental understanding of separations and waste forms processes with small-scale experimentation coupled with modeling and simulation. The result of this approach is the development of a predictive capability that supports evaluation of separations and waste forms technologies. The specific suite of technologies explored will depend on and must be integrated with the fuel development effort, as well as an understanding of potential waste form requirements. This five-year implementation plan lays out the specific near-term tactical investments in people, equipment and facilities, and customer capture efforts that will be required over the next five years to quickly and safely bring on line the capabilities needed to support the science-based goals and objectives of INL's Advanced Separations and Waste Forms RD and D Capabilities Strategic Plan.
[en] This report summarizes the 2011 fiscal+calendar year efforts for developing waste forms for a spent salt generated in reprocessing nuclear fuel with an electrochemical separations process. The two waste forms are tellurite (TeO2-based) glasses and sol-gel-derived high-halide mineral analogs to stable minerals found in nature.
[en] Topics covered in this Nuclear Technology and Research Development (NTRD) monthly update include: Advanced Fuels Campaign, Material Recovery and Waste Forms Development, MPACT Campaign, Fuel Cycle Options Campaign, Joint Fuel Cycle Study Activities, and AFCI-HQ Program Support.
[en] Highlights: • Cerium containing iron phosphate based glass-ceramic waste forms were synthesized. • Main structural units of the glass-ceramics are Q0, Q1 and a small amount of Q2. • Good thermal stability of the glass-ceramics is obtained. • LRFe and LRCe of the glass-ceramics are 3.5 × 10−5 and 5.0 × 10−5 g m−2 d−1 respectively. • Slow cooling is a potential method to prepare iron phosphate based glass-ceramics.