Freeze and restart of the DWPF Scale Glass Melter

Technical Report · Mon Jul 31 04:00:00 EDT 1989

DOI:https://doi.org/10.2172/10190331· OSTI ID:10190331

Choi, A S

After over two years of successful demonstration of many design and operating concepts of the DWPF Melter system, the last Scale Glass Melter campaign was initiated on 6/9/88 and consisted of two parts; (1) simulation of noble metal buildup and (2) freeze and subsequent restart of the melter under various scenarios. The objectives were to simulate a prolonged power loss to major heating elements and to examine the characteristics of transient melter operations during a startup with a limited supply of lid heat. Experimental results indicate that in case of a total power loss to the lower electrodes such as due to noble metal deposition, spinel crystals will begin to form in the SRL 165 composite waste glass pool in 24 hours. The total lid heater power required to initiate joule heating was the same as that during slurry-feeding. Results of a radiative heat transfer analysis in the plenum indicate that under the identical operating conditions, the startup capabilities of the SGM and the DWPF Melter are quite similar, despite a greater lid heater to melt surface area ratio in the DWPF Melter.

• Research Organization: Westinghouse Savannah River Co., Aiken, SC (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC09-89SR18035
• OSTI ID: 10190331
• Report Number(s): WSRC-RP--89-635; WSRC-RP--89-634; ON: DE93003260
• Country of Publication: United States
• Language: English

Related Subjects

052001
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
CERAMIC MELTERS
DESIGN
ELECTRIC CONDUCTIVITY
GLASS
HEAT TRANSFER
HEATING
HIGH-LEVEL RADIOACTIVE WASTES
QUALITY ASSURANCE
SYMMETRY
THERMOCOUPLES
THERMODYNAMICS
VITRIFICATION
WASTE PROCESSING