Example of Pot. Failure Mode Analysis case studies

Case

Severity

Occurrence

Detection

Potential failure

Solution

1

L

L

L
  • None

 

2

L

H

L
  • Waste in production
  • Not severe NG shipped to customer

 

3

L

L

H
  • Not severe NG shipped to customer

 

4

H

L

L
  • Severe NG likely to be shipped to customer

 

5

H

L

H
  • Severe NG maybe shipped to customer

 

6

H

H

L
  • Severe NG shipped to customer
  • Severe NG of work-in-process

 

7

L

H

H
  • Not severe NG shipped to customer

 

8

H

H

H
  • Severe NG shipped to customer

 

H = High (~ 7, 8, 9, 10)

L = Low (~ 1, 2, 3, 4)

Selection of Recommended Action for high RPN

  1. Take recommended actions for every potential failure that have high RPN
  2. For 2 potential failures that have the same RPN, put priority for recommended action for failure that have more severity.
  3. For 2 potential failures that have the same RPN and the same severity number, put priority for recommended action for failure that have

Home

QS9000

APQP

PFMEA

SPC

MSA

QSA

Links

About Author

E-Mail