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ISO/IEC Guide 98-4:2012

Uncertainty of measurement -- Part 4: Role of measurement uncertainty in conformity assessment

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This document provides guidance and procedures for assessing the conformity of an item (entity, object or system) with specified requirements. The item might be, for example, a gauge block, a grocery scale or a blood sample. The procedures can be applied where the following conditions exist: The procedures developed in this document can be used to realize an interval, called an acceptance interval, of permissible measured values of the property of interest. Acceptance limits can be chosen so as to balance the risks associated with accepting non-conforming items (consumer's risk) or rejecting conforming items (producer's risk). Two types of conformity assessment problems are addressed. The first is the setting of acceptance limits that will assure that a desired conformance probability for a single measured item is achieved. The second is the setting of acceptance limits to assure an acceptable level of confidence on average as a number of (nominally identical) items are measured. Guidance is given for their solution. This document contains examples to illustrate the guidance provided. The concepts presented can be extended to more general conformity assessment problems based on measurements of a set of scalar measurands. Documents such as references [19, 13] cover sector-specific aspects of conformity assessment. The audience of this document includes quality managers, members of standards development organizations, accreditation authorities and the staffs of testing and measuring laboratories, inspection bodies, certification bodies, regulatory agencies, academics and researchers.
Sisällysluettelo
Sidokset
Velvoittavat viittaukset
ISO/IEC 17000:2004 Conformity assessment — Vocabulary and general principles.
ISO 3534-1:2006 Statistics — Vocabulary and symbols — Part 1: Probability and general statistical terms.
ISO 3534-2:2006 Statistics — Vocabulary and symbols - Part 2: Applied statistics.
Vahvistuspäivä
19.11.2012
Julkaisupäivä
19.11.2012
Painos
2012
Sivumäärä
49
Julkaisun kieli
englanti

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