Practical guidance on decision rules, guard banding, and wording statements of conformity under ISO/IEC 17025:2017. Freely available. ILAC Quality & Accreditation
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18 results for “Decision rule”
Decision-rule vocabulary (simple/stringent/relaxed acceptance) widely referenced in dimensional conformance and guard-banding practice. ASME Dimensional
Decision rules for proving conformance or nonconformance with a specification given measurement uncertainty — the dimensional-metrology companion to guard-banding practice. ISO Dimensional
Dictionary
Decision rule
A documented rule describing how measurement uncertainty is accounted for when stating conformity with a specified requirement — required by ISO/IEC 17025:2017 when…
The 2017 revision of ISO/IEC 17025 made decision rules explicit: whenever a laboratory states conformity, the rule that accounts for measurement uncertainty must…
…require the certificate to state the decision rule applied. 'Pass' with no rule and no uncertainty is not evidence of conformity you can lean…
…Where decision rules regarding uncertainties and tolerances are not part of the documentary standard, decision rules will be agreed to by the customer and…
…A verification is normally *based on* calibration data — you compare the observed errors (plus their uncertainty, per your decision rule) with the tolerance. So…
Standards
ISO/IEC 17025:2017 — General requirements for the competence of testing and calibration laboratories
…impartiality, resource and process requirements, metrological traceability, decision rules for conformity statements, and reporting. Accreditation of calibration and testing laboratories is granted against this…
…Document whichever route you take as your decision rule and get customer agreement where 17025 requires it.