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What does "Class" mean in an FMEA?

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Miner

Forum Moderator
Staff member
Admin
#6
I found the following description.

For Automotive applications the following applies:

Critical Characteristic is a product feature, dimension or note that reasonably anticipated variation could directly affect compliance with government regulations or safe operation of the equipment. Any of those characteristics that affect a failure mode with a severity of 9 or 10 must be reviewed to determine if they should become a critical characteristic.

Significant Characteristic is a feature, dimension, or note that reasonably anticipated variation could affect principal fit, function, durability, customer satisfaction, or manufacturability. Any of those characteristics that affect a failure mode with a severity of 5 to 8 and an occurrence of 4 or higher must be reviewed to determine if they should become a significant characteristic
 

Jimmy123

Involved In Discussions
#7
I found the following description.

For Automotive applications the following applies:

Critical Characteristic is a product feature, dimension or note that reasonably anticipated variation could directly affect compliance with government regulations or safe operation of the equipment. Any of those characteristics that affect a failure mode with a severity of 9 or 10 must
be reviewed to determine if they should become a critical characteristic.

Significant Characteristic is a feature, dimension, or note that reasonably anticipated variation could affect principal fit, function, durability, customer satisfaction, or manufacturability. Any of those characteristics that affect a failure mode with a severity of 5 to 8 and an occurrence of 4 or higher must be reviewed to determine if they should become a significant characteristic
How does this improve the quality?
 

Miner

Forum Moderator
Staff member
Admin
#8
These are characteristics that require special action to mitigate the risk. That action might be a design change to reduce the severity, preventive controls to reduce occurrence, or detection controls.
 
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