Procedure of Measurement Error Analysis for Safeguards Verification

摘要

The inspectorate must perform analysis of operator's measurement data to verify that the operator's measurement accuracy has been kept at his declared level in the design information. A method to be used for such a purpose is the paired comparison applied to the paired data set composed of the inspector data and the corresponding operator's data. The inspector's data are obtained by the independent measurements on the basis of random sampling method. This report describes the paired comparison method briefly and shows an example of application of the method to the data obtained during a physical inventory taking at a low enriched uranium fabrication plant. It also describes a specific method which was considered to apply to the special data containing some groups of nominal values. Such a group of data has no variance and consequently an ordinal paired comparison is not applicable to those data set. This report was submitted to the IAEA Advisory Group Meeting on ''Evaluation of the Quality of Safeguards Non-Destructive Assay Measurement Data,'' held at the IAEA from 7-9 November, 1979. (Atomindex citation 12:625423)