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Title: Sludge Batch 5 Slurry Fed Melt Rate Furnace Test with Frits 418 and 550

Abstract

Based on Melt Rate Furnace (MRF) testing for the Sludge Batch 5 (SB5) projected composition and assessments of the potential frits with reasonable operating windows, the Savannah River National Laboratory (SRNL) recommended Slurry Fed Melt Rate Furnace (SMRF) testing with Frits 418 and 550. DWPF is currently using Frit 418 with SB5 based on SRNL's recommendation due to its ability to accommodate significant sodium variation in the sludge composition. However, experience with high boron containing frits in DWPF indicated a potential advantage for Frit 550 might exist. Therefore, SRNL performed SMRF testing to assess Frit 550's potential advantages. The results of SMRF testing with SB5 simulant indicate that there is no appreciable difference in melt rate between Frit 418 and Frit 550 at a targeted 34 weight % waste loading. Both batches exhibited comparable behavior when delivered through the feed tube by the peristaltic pump. Limited observation of the cold cap during both runs showed no indication of major cold cap mounding. MRF testing, performed after the SMRF runs due to time constraints, with the same two Slurry Mix Evaporator (SME) dried products led to the same conclusion. Although visual observations of the cross-sectioned MRF beakers indicated differences in themore » appearance of the two systems, the measured melt rates were both {approx}0.6 in/hr. Therefore, SRNL does not recommend a change from Frit 418 for the initial SB5 processing in DWPF. Once the actual SB5 composition is known and revised projections of SB5 after the neptunium stream addition and any decants is provided, SRNL will perform an additional compositional window assessment with Frit 418. If requested, SRNL can also include other potential frits in this assessment should processing of SB5 with Frit 418 result in less than desirable melter throughput in DWPF. The frits would then be subjected to melt rate testing at SRNL to determine any potential advantages.« less

Authors:
;
Publication Date:
Research Org.:
Savannah River Site (SRS), Aiken, SC
Sponsoring Org.:
USDOE
OSTI Identifier:
947193
Report Number(s):
SRNL-STI-2008-00508
TRN: US0901425
DOE Contract Number:  
DE-AC09-08SR22470
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; EVAPORATORS; FURNACES; NEPTUNIUM; RADIOACTIVE WASTE PROCESSING; SAVANNAH RIVER PLANT; SLUDGES; VITRIFICATION; CHEMICAL COMPOSITION

Citation Formats

Miller, Donald, and Pickenheim, Bradley. Sludge Batch 5 Slurry Fed Melt Rate Furnace Test with Frits 418 and 550. United States: N. p., 2009. Web. doi:10.2172/947193.
Miller, Donald, & Pickenheim, Bradley. Sludge Batch 5 Slurry Fed Melt Rate Furnace Test with Frits 418 and 550. United States. https://doi.org/10.2172/947193
Miller, Donald, and Pickenheim, Bradley. 2009. "Sludge Batch 5 Slurry Fed Melt Rate Furnace Test with Frits 418 and 550". United States. https://doi.org/10.2172/947193. https://www.osti.gov/servlets/purl/947193.
@article{osti_947193,
title = {Sludge Batch 5 Slurry Fed Melt Rate Furnace Test with Frits 418 and 550},
author = {Miller, Donald and Pickenheim, Bradley},
abstractNote = {Based on Melt Rate Furnace (MRF) testing for the Sludge Batch 5 (SB5) projected composition and assessments of the potential frits with reasonable operating windows, the Savannah River National Laboratory (SRNL) recommended Slurry Fed Melt Rate Furnace (SMRF) testing with Frits 418 and 550. DWPF is currently using Frit 418 with SB5 based on SRNL's recommendation due to its ability to accommodate significant sodium variation in the sludge composition. However, experience with high boron containing frits in DWPF indicated a potential advantage for Frit 550 might exist. Therefore, SRNL performed SMRF testing to assess Frit 550's potential advantages. The results of SMRF testing with SB5 simulant indicate that there is no appreciable difference in melt rate between Frit 418 and Frit 550 at a targeted 34 weight % waste loading. Both batches exhibited comparable behavior when delivered through the feed tube by the peristaltic pump. Limited observation of the cold cap during both runs showed no indication of major cold cap mounding. MRF testing, performed after the SMRF runs due to time constraints, with the same two Slurry Mix Evaporator (SME) dried products led to the same conclusion. Although visual observations of the cross-sectioned MRF beakers indicated differences in the appearance of the two systems, the measured melt rates were both {approx}0.6 in/hr. Therefore, SRNL does not recommend a change from Frit 418 for the initial SB5 processing in DWPF. Once the actual SB5 composition is known and revised projections of SB5 after the neptunium stream addition and any decants is provided, SRNL will perform an additional compositional window assessment with Frit 418. If requested, SRNL can also include other potential frits in this assessment should processing of SB5 with Frit 418 result in less than desirable melter throughput in DWPF. The frits would then be subjected to melt rate testing at SRNL to determine any potential advantages.},
doi = {10.2172/947193},
url = {https://www.osti.gov/biblio/947193}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {2}
}