scholarly journals Tank Waste Remediation System High-Level Waste Melter Vitrification System Development and Testing Strategy

10.2172/65032 ◽  
1995 ◽  
Author(s):  
R.B. Calmus
Keyword(s):  
System Development ◽  
High Level Waste ◽  
Testing Strategy ◽  
Waste Remediation ◽  
High Level ◽  
Tank Waste

Models and Strategies for Blending Nuclear Wastes to Minimize Immobilized Waste Volume

1995 ◽  
Vol 412 ◽  
Author(s):  
M. Hoza
Keyword(s):  
High Level Waste ◽  
Nuclear Wastes ◽  
Low Level ◽  
Wide Variability ◽  
Stable Glass ◽  
High Level ◽  
Tank Waste

AbstractHanford tank waste will be separated into high-level and low-level portions; each portion will then be vitrified to produce a stable glass form for disposal. Because of the wide variability in the tank waste compositions, blending is being considered as a way to reduce the number of distinct compositions that must be vitrified and to minimize the resultant volume of vitrified waste.This paper discusses several approaches to blending and models developed to formulate blends for each approach. The models produce optimized blends which minimize the volume of glass required such that all composition and property constraints on the glass are satisfied. The paper will discuss several blending strategies, and will provide the results of calculations comparing the approaches and strategies. Finally, an overall strategy for retrieving, blending, and vitrifying Hanford tank waste will be briefly discussed.Results of the calculations for high-level waste show that an effective blending strategy can greatly reduce the volume of glass required to immobilize the waste.

scholarly journals Waste Loading Enhancements for Hanford Low-Activity Waste Glasses

2011 ◽  
Author(s):  
Albert A. Kruger
Keyword(s):  
Waste Treatment ◽  
The United States ◽  
Washington State ◽  
High Level Waste ◽  
United States Department ◽  
Hanford Site ◽  
Geological Repository ◽  
High Level ◽  
Low Activity ◽  
Tank Waste

About 50 million gallons of mixed waste is currently stored in underground tanks at The United States Department of Energy’s (DOE) Hanford site in Washington state. The Hanford Tank Waste Treatment and Immobilization Plant (WTP) will provide the Office of River Protection (ORP) with a means of treating this waste by vitrification for subsequent disposal. The tank waste will be separated into low- and high-activity waste fractions, which will then be vitrified respectively into Immobilized Low Activity Waste (ILAW) and Immobilized High Level Waste (IHLW) products. The ILAW product is destined for disposal in an engineered facility at Hanford site while the IHLW product will be disposed in a national geological repository. Both waste forms must meet a variety of requirements to ensure the protection of the environment before they can be accepted for disposal.

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