Total Measurement Uncertainty for the Plutonium Finishing Plant Segmented Gamma Scanner Assay System.

Fazzari, D. M.

Technical Information Center Oak Ridge Tennessee

关键词: Sources;    Uncertainty effects;    Source distribution;    Isotopic uncertainties;    Segmented gamma scan assay;   

RP-ID  :  DE2003805999

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

This report presents the results of an evaluation of the Total Measurement Uncertainty (TMU) for the Canberra manufactured Segmented Gamma Scanner Assay System (SGSAS) as employed at the Hanford Plutonium Finishing Plant (PFP). In this document, TMU embodies the combined uncertainties due to all of the individual random and systematic sources of measurement uncertainty. It includes uncertaintys arising from corrections and factors applied to the analysis of transuranic waste to compensate for inhomogeneities and interferences from the waste matrix and radioactive components. These include uncertainty components for any assumptions contained in the calibration of the system or computation of the data. Uncertainties are propagated at 1 sigma. The final total measurement uncertainty value is reported at the 95% confidence level. The SGSAS is a gamma assay system that is used to assay plutonium and uranium waste.