Small-Scale High Temperature Melter-1 (SSHTM-1) Data Package

Abstract

This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor Battelle Memorial Institute, nor any of their employees, makes any warranty, express or implied, or assumesany legal liability or responsibility for the accuracy, completeness, or.usefulness of any information, apparafus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by 'trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof, or Battelle Memorial Institute. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.

Tank waste remediation system phase I high-level waste feed processability assessment report

“…During FY 1994, two melter tests, SSHTM-1 and SSHTM-2, were completed using a simulated NCAW waste and blended DST/SST waste (Abrigo 1995b, Smith 1995. The SSHTM-1 test was divided into two segments with two separate feeds: (1) a 50 wt% NCAW feed using glycolic acid in lieu of formic acid as the chemical reductant and (2) a 50 wt% NCAW feed using only nitric acid (and no organic acid) to adjust the rheology of the feed.…”

“…During segment 1 of SSHTM-1, 1200 L of NCAW feed (with glycolic acid) were processed at temperatures of 1,350 to 1,400 "C, producing 520 kgs of glass (Abrigo 1995b, Smith 1995. Glass processing rates varied from 16 to about 26 kg/h-m2.…”

Nuclear Waste Vitrification in the United States: Recent Developments and Future Options

“…But the improvements must be balanced against the increased volatility and the reduced melter life. Limited testing of such concepts was reported by Pacific Northwest National Laboratory in the 1980s and 1990s 16,18,19 …”

“…Limited testing of such concepts was reported by Pacific Northwest National Laboratory in the 1980s and 1990s. 16,18,19 Dramatic improvements on induction melters have also been implemented. AREVA recently installed a cold-crucible induction melter (CCIM) at the LaHague reprocessing facility (UP2-800) in France.…”

Evaluation of alternative chemical additives for high-level waste vitrification feed preparation processing

“…Feed preparation studies conducted with a frit (commonly referred to as the fiscal year (FY) 1991 frit) highlighted the susceptibility of HLW melter feeds to continual changes in rheological properties (Grunewald et al 1993;Hutson 1993;Gaskill et al 1995). Changes in frit composition have mitigated the aging effect to some degree, but it still persists in recent melter feed slurries (Smith et al 1995a). Development of methods to adequately characterize this phenomenon are being developed.…”