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Referenced initially in Australian Standard AS 1851:2012 a non-conformance is not a defect but rather an observation about a system or item of equipment where no immediate action is required, however must be recorded for future reference or action. This is in contrast to a non-critical defect or critical defect where action is required.

Australian Standard AS 1851 introduced the terms non-conformance, non-critical defect and critical defect in the 2012 edition of the Standard. The definition was accompanied by a flowchart (Figure 1.5.6 - Routine Service Activity Failure) to illustrate the difference between each of these terms.

AS1851 2012 Critical Defect Non Conformance Flowchart - Table 1.5.6 Routine Service Activity Failure


In preparing this definition, we have drawn from various sources including Legislation, Codes, Standards and industry information, research and knowledge.  Like the english language, these definitions may subtly change from time to time. As such these definitions are provided solely on the basis that users will be responsible for making their own assessment of the definition and and are advised to verify all relevant representations, statements and information.