Crystal accumulation in the Hanford Waste Treatment Plant high level waste melter. Preliminary settling and resuspension testing
- Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)
The full-scale, room-temperature Hanford Tank Waste Treatment and Immobilization Plant (WTP) High-Level Waste (HLW) melter riser test system was successfully operated with silicone oil and magnetite particles at a loading of 0.1 vol %. Design and construction of the system and instrumentation, and the selection and preparation of simulant materials, are briefly reviewed. Three experiments were completed. A prototypic pour rate was maintained, based on the volumetric flow rate. Settling and accumulation of magnetite particles were observed at the bottom of the riser and along the bottom of the throat after each experiment. The height of the accumulated layer at the bottom of the riser, after the first pouring experiment, approximated the expected level given the solids loading of 0.1 vol %. More detailed observations of particle resuspension and settling were made during and after the third pouring experiment. The accumulated layer of particles at the bottom of the riser appeared to be unaffected after a pouring cycle of approximately 15 minutes at the prototypic flow rate. The accumulated layer of particles along the bottom of the throat was somewhat reduced after the same pouring cycle. Review of the time-lapse recording showed that some of the settling particles flow from the riser into the throat. This may result in a thicker than expected settled layer in the throat.
- Research Organization:
- Savannah River Site (SRS), Aiken, SC (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC09-08SR22470
- OSTI ID:
- 1256681
- Report Number(s):
- SRNL-STI-2016-00113; TRN: US1700211
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
HANFORD RESERVATION
HIGH-LEVEL RADIOACTIVE WASTES
RADIOACTIVE WASTE FACILITIES
WASTE PROCESSING
MAGNETITE
PARTICLES
LAYERS
SILICONES
PARTICLE RESUSPENSION
TEMPERATURE RANGE 0273-0400 K
CERAMIC MELTERS
OILS
FLOW RATE
CRYSTALS
TANKS
CONSTRUCTION
DESIGN
DEPOSITION
DEMONSTRATION PLANTS