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Cost effective mass standard calibration intervals [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1995.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
5 pages : digital, PDF file
Additional Creators
Westinghouse Savannah River Company, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
National Institute of Standards and Technology (NIST) traceable standard weights serve as the foundation of mass measurement control programs. These standards are normally recalibrated annually at a cost of approximately $100 per weight. The Savannah River Site (SRS) has more than 4,000 standard weights. Most have recalibration intervals of 1 year. The cost effectiveness of the current practice was questioned. Are these mass standards being calibrated too often, and are all of these standards needed for calibration and QC activities? Statistical analyses of data from the calibration histories were performed on a random sample of eight weight sets. The analyses indicated no time effects or significant trends in the weight masses for periods of from 5 to 8 years. In other words, calibration checks were being performed too frequently. In addition, current electronic balance technology does not require a traditional set of standard weights that cover the entire weighing range of a balance. At the most, only 2 or 3 standards are needed for most weighing systems. Hence, by increasing weight set recalibration frequencies from 1 to 3 years, and by reducing the number standards calibrated by 80%, annual cost savings of over $400,000 are attainable at SRS. Details of the data analysis, technological advances, and cost savings are included in the paper.
Report Numbers
E 1.99:wsrc-ms--95-0027
E 1.99: conf-950787--89
conf-950787--89
wsrc-ms--95-0027
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
11/01/1995.
"wsrc-ms--95-0027"
" conf-950787--89"
"DE96001912"
36. annual meeting of the Institute for Nuclear Materials Management, Palm Desert, CA (United States), 9-12 Jul 1995.
Clark, J.P.; Shull, A.H.
Funding Information
AC09-89SR18035
View MARC record | catkey: 14111662