| Both sides previous revisionPrevious revisionNext revision | Previous revisionNext revisionBoth sides next revision |
| articles:optimizing_calibration_intervals [2020/01/14 13:17] – [Reducing Waste: Through Optimizing Calibration Intervals] rrandall | articles:optimizing_calibration_intervals [2021/12/27 10:08] – [Reducing Waste: Through Optimizing Calibration Intervals] rrandall |
|---|
| One company I visited, had over 13,000 instruments in their calibration system. They'd contracted all of the calibrations with a metrology laboratory that "optimized" their calibration intervals for them. The number of instruments found "Out-of-Tolerance" dropped from 5% (650 instruments) per year to less than 0.5% (only 65 instruments)! This reduced their risk (of "Out-of-Tolerance" instruments being used to inspect product), reduced their administrative costs (associated with performing "Out-of-Tolerance" impact analysis), and reduced their total annual cost for calibration services (fewer calibrations were performed)! | One company I visited, had over 13,000 instruments in their calibration system. They'd contracted all of the calibrations with a metrology laboratory that "optimized" their calibration intervals for them. The number of instruments found "Out-of-Tolerance" dropped from 5% (650 instruments) per year to less than 0.5% (only 65 instruments)! This reduced their risk (of "Out-of-Tolerance" instruments being used to inspect product), reduced their administrative costs (associated with performing "Out-of-Tolerance" impact analysis), and reduced their total annual cost for calibration services (fewer calibrations were performed)! |
| |
| <note>An excellent paper on this topic is [[https://us.flukecal.com/literature/articles-and-education/electrical-calibration/papers-articles/calibration-intervals-manuf|"Calibration Intervals, A Manufacturer's Perspective"]], written by David Deaver - [[https://us.flukecal.com|Fluke Corporation]].</note> | <note>To provide a balanced view of this topic, a paper defending use of the 12-month interval is [[https://us.flukecal.com/literature/articles-and-education/electrical-calibration/papers-articles/calibration-intervals-manuf|"Calibration Intervals, A Manufacturer's Perspective"]], written by David Deaver - [[https://us.flukecal.com|Fluke Corporation]].</note> |
| ===== Methodologies for the Determination of Calibration Intervals ===== | ===== Methodologies for the Determination of Calibration Intervals ===== |
| |
| |
| <note>{{ :articles:t.o._33k-1-100-1_30_november_2015_.pdf |T.O. 33K-1-100-1}}, "Table 3.1 General Calibration TOs", also lists the "Calibration TO" for each instrument "item type"; which can be obtained separately.</note> | <note>{{ :articles:t.o._33k-1-100-1_30_november_2015_.pdf |T.O. 33K-1-100-1}}, "Table 3.1 General Calibration TOs", also lists the "Calibration TO" for each instrument "item type"; which can be obtained separately.</note> |
| | |
| | For laboratory standards, refer to [[https://www.nist.gov/system/files/documents/2020/03/24/gmp-11-calibration-intervals-20190506.pdf|NIST GMP 11 -Good Measurement Practice for Assignment and Adjustment of Calibration Intervals for Laboratory Standards]]. |
