FMEA – Design
The Design FMEA is used to identify and evaluate potential defects early on in the development and design phase of a product or service, and to derive measures for minimizing risk. The goal is to identify design weaknesses before the product or service is launched on the market.
In this excerpt, a design FMEA was performed for a cordless screwdriver. The image below shows the scope of the FMEA as defined in advance—that is, the status at the time the document was created.
Interpretation of the Results
The task priority number shows that two measures were rated H. These measures should be prioritized, meaning they should be implemented as soon as possible to reduce the risk.
The TP number is calculated by multiplying Severity × Occurrence × Detection.
Nowadays, the AP is increasingly used. AP stands for task priority and places greater emphasis on the significance of the consequence of a failure. The AP table is shown in the image below.
In the Improve phase, select the Design FMEA and the number of rows you want to evaluate, and then click Create Worksheet.
Preliminary Work
- Analysis of the scope: Sometimes a design FMEA that examines an entire product is too broad. In this case, the scope must be narrowed down to a single component.
- Clearly classify the components and functions.
RPZ (Risk Priority Number): A product of risk assessment criteria
Occurrence: Probability that a design error will occur
Significance: Impact of the defect on function or customer
Detectability: Probability of detecting the defect before delivery
