Based on
FMEA manual
Case 1
Severity – 8 Occurrence – 2 Detection – 2
Severity is ranked 8 Means ---- Loss of primary function / 100 % product to be scrapped
Occurance is ranked 2 Means ---- 1 part in 1,000,000 ( LOW OCCURANCE)
Detection is ranked 2 means ------ in station only part error is detected / prevented making discrepant part
Case 2
Severity – 2 Occurrence – 2 Detection – 8
Severity is ranked 2 Means ---- noticed by discriminating customer 25% / Slight incovienince to operator or process
Occurance is ranked 2 Means ---- 1 part in 1,000,000 ( LOW OCCURANCE)
Detection is ranked 8 means ------ failure detection is post process by visual or by audible means
Case 3
Severity – 2 Occurrence – 8 Detection – 2
Severity is ranked 2 Means ---- noticed by discriminating customer 25% / Slight incovienince to operator or process
Occurance is ranked 8 Means ---- 1 part in 50
Detection is ranked 2 means ------ in station only part error is detected / prevented making discrepant part
To me case 1 is best even though severity is high, Occurance is low and detection prevents the problem to next stage
Case 3 is worst -occurance is high