2014 Enhanced LAW Glass Property-Composition Models, Phase 2

Crystal accumulation in the Hanford Waste Treatment Plant high level waste melter: Summary of FY2016 experiements

“…Given the identification of the T 1% constraint as one of the most influential constraints for estimated Hanford HLW glass volumes, ORP has initiated a program to evaluate whether this constraint can be relaxed or whether new constraints could be developed to replace the current T 1% approach. 7,8 A road map was developed to guide research and development efforts for a crystal tolerant glass processing strategy for WTP. 9 The basis of this potential, alternative approach will be an empirical model predicting the crystal accumulation in the WTP glass discharge riser and melter bottom as a function of glass composition, time, and temperature.…”

Crystal accumulation in the Hanford Waste Treatment Plant high level waste melter: Summary of 2017 experiments

“…Given the identification of the T1% constraint as one of the most influential constraints for estimated Hanford HLW glass volumes, ORP has initiated a program to evaluate whether this constraint can be relaxed or whether new constraints could be developed to replace the current T1% approach. 7,8 A road map was developed to guide research and development efforts for a crystal tolerant glass processing strategy for WTP. 9 The basis of this potential, alternative approach will be an empirical model predicting the crystal accumulation in the WTP glass discharge riser and melter bottom as a function of glass composition, time, and temperature.…”

Crystallization in High Level Waste (HLW) Glass Melters: Savannah River Site Operational Experience

“…Given the identification of the T 1% constraint as one of the most influential constraints for estimated Hanford HLW glass volumes, the DOE-Office of River Protection (ORP) has initiated a program to evaluate whether this constraint can be relaxed or whether new constraints could be developed to replace the current T 1% approach. 11,12 A study of the design and operation of the WTP HLW melter suggests that spinel accumulation in the 76 mm diameter glass discharge riser is the most limiting design aspect of the melter, and can most likely prevent discharge of the molten glass into canisters, especially when considering frequent and periodic idling. * A road map 13 was recently prepared to further inform research and development efforts for the crystal tolerant glass processing strategy for WTP.…”