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FMEA-Worksheet

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					Rating

Degree of Severity Customer will not notice the acverse Effect or it is insignificant

1

Proability of Occurrence Frequency 1 in … Likelyhood of occurences is remote

Ability to Detect Sure that the potentiona Failure will be found or precented before reaching 1,000,000 the next customer Almost certain that the potentiona failure will be found or prevented before reaching the next customer 20,000 Low likelyhood that the portiential failure will reach the nect customer 5,000 undetected Controls may detect or prevent the potential failure from reaching the next 2,000 customer Moderate likelyhood that the potentila failure will 500 reach the next customer Controls are unlikely to detect or prevent the potentila failure from reaching the next customer 100 Poor likelyhood that the potential failure will be detected or prevented befroe reaching the next 50 customer Very poor likelyhood thtat the potential failure will be detected or prevented befroe reaching the next 20 customer Current controls probably will not even detect the potential failure 10 Absolute certainty that the current controls will not detect the potential failure. 2

100%

Customer will probably experience slight Low failure rate with supporting annoyance documentation

2
Customer will experience annoyance due to the slight degradation of performance low failure rate without supporting documentation

99%

3

95%

4

Customer dissatisfaction due to reduced Occaisional failures performance

90%

5

Customer is made uncomfortable or their productivity is reduced by the continued degradation of the effect Warrantty repair or significant product quality complaint

Relatively moderate failure rate with supporting documentation Moderate failure rate without supporting documentation

85%

6
High degree of customer dissatisfaction Relatively high failure rate with due to component failure without supporting documentation complete loss of function. Productivuty impacted by high scrap or rework levels. Very high degree of dissatishfaction with High Failure rate without a negitiave impact on safety or supporting docuemtnation governmental regulations

80%

7

70%

8

60%

9

10

Customer endangered due to the adverse effect on safe system performance with warning defore failure or violation of governemntal regularions Customer endangered due to the adverse effect on safe system performance without warning before failure or violation of governmental regulation

Failure is almost certain based on some data

50%

Assured of failure based on data

<50%

Failure modes and effects analysis (FMEA)
Project: Date:

Prepared by:

SEV = How severe is effect on the customer? OCC = How frequent is the cause likely to occur? DET = How probable is detection of cause? RPN = Risk priority number in order to rank concerns; calculated as SEV x OCC x DET

Process step

Potential failure mode

Potential failure effects

S E V

Potential causes

O C C

Current process controls

D E T

R P N

Actions recommended What are the actions for reducing the occurrence of the cause or for improving its detection? You should provide actions on all high RPNs and on severity ratings of 9 or 10.

Responsibility (target date)

Actions taken

N S e E w V

N O e C w C

N D e E w T

N R e P w N

What is the step?

In what ways can the step go wrong?

What is the impact on the customer if the failure mode is not prevented or corrected?

10

What causes the step to go wrong? (i.e., How could the failure mode occur?)

10

What are the existing controls that either prevent the failure mode from occurring or detect it should it occur?

10

1000

Who is responsible for the recommended action? What date should it be completed by?

What were the actions implemented? Include completion month/year (then recalculate resulting RPN).

10

10

10

1000

0

0

0

0

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