- Defect
In the context of routine service and maintenance of fire protection systems and equipment, described in Australian Standards AS 1851 and AS/NZS 2293.2, a defect is identified as any condition, shortcoming, imperfection, failure, flaw, or fault that has or may adversely affect the intended operation, performance, or reliability of an item of equipment, component, system or measure. Such a defect has the potential to compromise the effectiveness of a safety measure during a fire or other related emergency.
A defect can be classified into two categories:
- Non-Critical Defect: A non-critical defect is a defect that does not render the system completely inoperative or significantly impair life safety but still adversely affects performance and requires correction within a reasonable timeframe.
- Critical Defect: A defect that can or does render a fire protection system or component of a system inoperative, significantly impairs its functionality, or severely impacts life safety, requiring immediate rectification.
In contrast, a Non-Conformance is an observation or condition not meeting prescribed standards or requirements but does not immediately impact the system’s functionality or safety, requiring only documentation and future review.
Australian Standard AS 1851 introduced the terms non-conformance, non-critical defect and critical defect first in the AS 1851 2005 edition of the Standard and then amended 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.
