Year
1977
Abstract
A liquid volume calibration instrument using a noncorwentlonal technique was needed for the sophisticated plutonium processing facility nearing completion at the Rocky Flats Plant of Rockwell International. It features displacement pistons standardized by dimensional inspection and uses automatic microprocessor control to provide validity checks and a complete data record. The instrument calibrates remote Special Nuclear Material (SNM) tankage of special design under program control but retains alternate operation modes and the ability to operate in general environments. Calibration data produced on punched paper tape is directly entered into an associated data base which provides analytical treatment in accordance with ANSI Nl5.19-1975, \"Volume Calibration Techniques for Nuclear Material Control.\" Design considerations, operation, and the results of experiments are discussed. Some error sources are evaluated and composite advantages in the calibration of process tankage are given with emphasis on tank volume reliability for SNM measurements.