Implications of the Statistical Review of The Side-By-Side Comparison of DWPFs Two Leeman ICPS

The Statistical Consulting Section of the Savannah River National Laboratory has conducted a statistical evaluation of side-by-side measurement data generated at the Defense Waste Processing Facility, DWPF, using two Leeman Labs Inductively Coupled Plasma Atomic Emission Spectrometers, ICPs, the production ICP, designated as M-13, and a new Leeman ICP, designated as M-14. The purpose of this report is to document the implications of the statistical evaluation relative to the qualification of the M-14 for use at DWPF. While additional work is needed to fully integrate the M-14 and M-13 ICPs into DWPFs operational systems use of the M-14 ICP will be adequate for sludge/frit blending and will lead to reliable SME acceptability decisions for product quality. For a sludge/frit system that is limited by a process property prediction such as viscosity or liquidus temperature as waste loading is increased, the SME blending strategy can be adjusted to lessen the impact of an incomplete definition of the M-14s measurement uncertainty on the PCCS acceptability decision until such time as the complete definition of that uncertainty can be determined for the M-14 as well as the M-13. A task is currently underway to address this issue. However, the evaluations presented in this report result in no changes, nor recommendations for changes, to PCCS