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House-of-security approach to measurement in analytical chemistry: quantification of human error using expert judgments |
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| Authors: | Ilya Kuselman Elena Kardash Emil Bashkansky Francesca Pennecchi Stephen L R Ellison Karen Ginsbury Malka Epstein Ale? Fajgelj Yury Karpov |
| Institution: | 1. National Physical Laboratory of Israel (INPL), Danciger “A” Bldg, Givat Ram, 91904, Jerusalem, Israel 2. Department of Industrial Engineering and Management, ORT Braude College, 21982, Karmiel, Israel 3. Istituto Nazionale di Ricerca Metrologica (INRIM), 91 Strada delle Cacce, 10135, Turin, Italy 4. Laboratory of Government Chemist Ltd (LGC), Queens Road, Teddington, Middlesex, TW11 0LY, UK 5. PCI Pharmaceutical Consulting Israel Ltd, 61/1 Trumpeldor Str, 4949601, Petah Tikva, Israel 6. System Advanced Laboratories Ltd, 1 Yarmuch Str, 81220, Yavne, Israel 7. International Atomic Energy Agency (IAEA), Vienna International Centre, P.O. Box 100, 1400, Vienna, Austria 8. State Research and Design Institute for Rare Metal Industry (GIREDMET), B. Tolmachevskyi per. 5, 119017, Moscow, Russia |
| Abstract: | A new technique for quantification of human errors in chemical analysis using expert judgments is described. This technique is based on the house-of-security approach developed recently in the field of safety and security for prevention of terrorist and criminal attacks against an organization. The following relative quantification parameters (expressed in %) are proposed in the technique: (a) likelihood score of human error in a chemical analytical measurement/testing method, (b) severity score of human error for reliability of the test results, (c) importance score of a component of a laboratory quality system, and (d) effectiveness score of the quality system as a whole in preventing/blocking human error. As an example, 34 scenarios of human error in pH measurement of groundwater are discussed and quantified. |
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