The Application of Fixed and Random Error to Shipper/Receiver Differences

In order to determine if a statistically significant difference exists between shipper and receiver measurements, a statistical combination of the shipper’s and receiver’s limit-oferror (LOE) is calculated to determine the shipper/receiver limit-of -error, LOES/R. The shipper’s and receiver’s LOE may possess random and systematic components. Depending on the interpretation of the systematic and random components, the determination of the LOES/R can be performed by several different calculational methods. These calculational methods and their associated underlying assumptions are reviewed in the context of the LANL shipper receiver program. This paper, by presenting the assumptions that form the basis of a site-specific shipper/receiver difference calculation, can assist those individuals responsible for calculating LOES/R.