This paper will discuss the history, progress, and future activities that will define and mitigate the mission risk. An evaluation of demonstration program results will identify potential mission improvement considerations that will help ensure successful mission completion. The Hanford mixing and sampling demonstration program will identify DST mixing performance capability, will evaluate representative sampling techniques, and will estimate feed batch consistency.
![mixing agitator design mixing agitator design](https://proquipinc.com/wp-content/uploads/2015/06/Proquip-industrial-mixers-shaft-with-2-impellers.jpg)
![mixing agitator design mixing agitator design](https://image.slidesharecdn.com/agitatordesignandselection-131108020731-phpapp01/95/agitator-design-and-selection-29-638.jpg)
Inconsistent feed to the WTP could cause additional batch-to-batch operational adjustments that reduce operating efficiency and have the potential to increase the overall mission length. It has been demonstrated that homogenous mixing ofHLW sludge in Hanford DSTs is not likely achievable more » with the baseline design thereby causing representative sampling and consistent feed delivery to be more difficult. DOE's River Protection Project (RPP) mission modeling and WTP facility modeling assume that individual 3785 cubic meter (l million gallon) HLW feed tanks are homogenously mixed, representatively sampled, and consistently delivered to the WTP.
![mixing agitator design mixing agitator design](https://i.ytimg.com/vi/05EYiC8x07s/maxresdefault.jpg)
The ability to effectively mix, sample, certify, and deliver consistent batches of High Level Waste (HLW) feed from the Hanford Double Shell Tanks (DST) to the Waste Treatment and Immobilization Plant (WTP) presents a significant mission risk with potential to impact mission length and the quantity of HLW glass produced.