6. Assess the initial criticality of potential failures
Criticality is assessed on the basis of three criteria: severity, likelihood and detectability. These criteria are rated, often from 1 to 10 (but another rating can be chosen), and have only a relative value. It's useful for the group to use benchmarks to obtain a consistent rating. Here, by way of example, we propose some benchmarks for a rating from 1 to 10.
6.1 Severity of effects
It represents the level of consequences of the failure. Example of a rating:
1 - 2: very low; easily and inexpensively repaired;
3 - 4: limited to the product; effect quickly repairable at a lower cost than the product;
5 - 6: extended to effects linked to product...
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Assess the initial criticality of potential failures
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Standards and reference works
NF EN 60812:2006 (ex NF X 60-510) System reliability analysis techniques - Procedure for analyzing failure modes and their effects (FMEA)
NF EN16271:2013, (ex NF X 50-151) Value management - Functional expression of need and functional specifications - Requirements for the expression and validation of the need to be satisfied in the process of acquiring...
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