AS/NZS IEC 60812:2020 pdf free.Australian/New Zealand Standard Failure modes and effects analysis (FMEA and FMECA).
An FMEA is a method in which an item or a process is broken down into elements and, foreach element in turn, failure modes and effects are identified and analysed.This is to identifyany required improvements by eliminating adverse effects or reducing their likelihood orseverity.The purpose of adding a criticality analysis is to enable prioritization of the failuremodes for potential treatment.
The reasons for which FMEA is undertaken include the following:
to identify those failure modes which have unwanted effects on system operation，forexample preclude or significantly degrade operation or affect the safety of the user andother persons;
to improve the design and development of items or processes in a cost effective manner by intervening early in the development programme;
to identify risks as part of a risk management process (ISo 31000);
to satisfy statutory and business obligations by demonstrating that foreseeable risks have been identified and accounted for;
to provide a foundation for other dependability analyses (Annex D discusses therelationship between FMEA and other dependability analysis methods);
to develop and support a reliability test programme;
to provide a basis for planning maintenance and support programmes such as throughreliability centred maintenance (IEC 60300-3-11);
as a key process within an asset management system (ISo 55000).
ln general，FMEA is a method to analyse the effect of single failures. If FMEA is used to analyse failure of interdependent items, then these can be considered，with limitations, in the analysis (5.3.6 and 5.3.7.2).
An FMEA requires a person or persons (e.g. team) to take responsibility for the following:
managing the process of conducting the FMEA;
deciding the form of the FMEA so that it is tailored for the application context;
identifying and analysing the failure modes and effects of the item or process;
determining required treatments;
reporting the FMEA including treatments and recommendations.
For convenience in this document, the title “failure modes and effects analysis” abbreviated to“FMEA””is used as a generic term to represent any application or degree of tailoring of theanalysis, including FMECA.
The term “item” or “process” is used to denote the subject of the FMEA analysis.The item orprocess can be part of a larger system for which multiple FMEA analyses are required.Examples of the terms commonly associated with the top，mid and low hierarchy levels aregiven in Table 1.AS/NZS IEC 60812 pdf download.