HWVP pilot-scale vitrification system campaign: LFCM-8 summary report

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

“…The destruction and removal efficiency (DRE) for formic acid was recently determined for liquid-fed ceramic melters. The destruction of formate was at least 99.8 percent for feeds containing 37 to 46 g/L formate (Perez 1994). Similar tests have been performed at SRS to assess destruction of organics in the DWPF melter (Crow 1984(Crow , 1987.…”

“…The average online efficiency of the PAMELA melter was 85 percent, while the efficiency was greater than 98 percent during the recent LFCM tests conducted by PNNL (Perez 1994). In practice, melter efficiencies of less than 70 percent should be expected during the first year of operation for a production plant with some increase in online efficiency as problems are worked out of the process.…”

Process system evaluation-consolidated letters. Volume 1. Alternatives for the off-gas treatment system for the low-level waste vitrification process

“…As & the case with the combustion melter, these estimates are based on the waste composition data provided in the WHC flowcharts ( h e 1994), and it is assumed there will be a 14-year processing lifetime. The estimates presented in Table 2.2 are based on arrent waste inventory, the LFCM-8 report (Perez et al 1993), and the simul'ant recipes in the LLW-Vit Statement of Work (Wilson 1994). An assumed air inleakage rate of 1, OOO S C F M is inchded in the total off-gas flow rate of 4,400 SCFM; The assumed DFs for nitrogen, iodine, carbon, and mercury are 1; for fluorine and chlorine, 4; for sulfur, 10; and for phosphorus, 50 (Perez et al 1993).…”

“…. Film coolers have been used to quench off-gases from thermal treatment of radioactive waste'both at PNL and in a number of operating plants (Perez et al 1993, IAEA 1989. They are a reliable, proven technology.…”