Inventory-Based Computational Analysis of Hanford Tank Waste

摘要

This report describes a systematic computational analysis of waste solids layers in the Hanford Tank Farms. With hundreds of individual waste layers, and many individual MCNP calculations required for each search, layer-by-layer analysis would have been excessively time-consuming on previous generations of computers, leading to the development of the CWM and other idealizations. Increases in computer processing speeds have meant that these calculations are now possible.These calculations confirmed that the assumptions used to create the CWM were reasonable. While a number of tank layers calculated maximum plutonium concentration limits less than 2.6 g/L, these layers, taken together, only comprise 0.2% of the total plutonium mass in all of tank farms. The remainder of the plutonium is located in layers bounded by the CWM analysis.