Meeting Functional Safety (IEC 61508, ISO 26262) Standards
Optimizing Diagnostic Design Tradeoffs
exida's FMEDAx finds design problems and predicts failure rates and modes. This technique meets requirements for certification to safety standards like ISO 26262 and IEC 61508.
Failure Modes Effects and Diagnostics Analysis (FMEDA) is a failure rate/failure mode prediction technique invented by engineers at exida. FMEDA uses component failure rates chosen per a given design strength profile in combination with an operational profile which specifies an application and environment.
The FMEDA technique is performed on a specific device (e.g., ball valve, pressure transmitter, electronic module, etc.) specified down to the manufacturer and series/model. Variables that must be considered in the analysis include:
The FMEDAx Tool user enters this information for the specific design based on product schematics and mechanical design documents along with knowledge on the potential impact of expected failure modes and how they would be handled in the specific system under evaluation. This analysis is a part of the typical high-quality product design certification process for a product certified to IEC 61508 for a particular Safety Integrity Level (SIL).
The FMEDAx tool was created by the inventors of the FMEDA technique and incorporates the knowledge developed over decades of use. The FMEDAx tool comes with one or more specified component databases that cover all needed components and the proper operational profile.
exida has developed three general purpose component failure databases: electrical, mechanical, and sensors.