Identify potential failures before they impact your business
A Failure Mode, Effects and Criticality Analysis (FMECA) is a procedure for identifying potential failure modes in a system and classifying them according to their severity. The two-part process involves:
- Identifying failure modes and their effects
- Ranking failure modes based on both the severity and probability of that failure mode occurring (Criticality Analysis)
Using the FMECA module of Reliability Workbench™, you get the full framework and reporting facilities to construct FMECAs to industry standards or your own custom requirements. It provides a simple and interactive graphical method for constructing a block diagram, representing logical connections between the sub-systems and components constituting the overall plant or system. You can extend the diagram to represent failure modes at various hierarchical levels.
Availability Workbench™, Reliability Workbench™, FaultTree+™, and Hazop+™ are trademarks of Isograph Limited, the author and owner of products bearing these marks. ARMS Reliability is an authorised distributor of those products, and a trainer in respect of their use.
- Commercial aircraft FMEA
Commercial aircraft FMEAs are a special format of FMEA, allowing users to define failure modes and effects at unit, system, engine and aircraft level.
- How to construct a FMECA
The FMECA procedure involves the following steps:
- Define the system to be analyzed
- Construct a hierarchical block diagram
- Identify failure modes at all levels of indenture
- Assign effects to the failure modes
- Assign severity categories to effects
- Enter other failure mode data such as failure detection methods, failure rates, etc.
- Rank failure modes in terms of severity and criticality
- Produce reports highlighting critical failures
- Recommend redesign or maintenance actions to reduce critical failures
- Process and design FMEA
Process and design FMEAs provide an alternative approach to performing a FMEA. Occurrence, severity and detection rankings replace apportionments and failure rates. Risk Priority Numbers (RPNs) are calculated by multiplying the severity, occurrence and detection ranking numbers together.
- Supported Industry Standards
- BS 5760 Part 5
- GJB 1391-92
- AIAG FMEA 3
- SAE J1739