What is Failure Mode , Failure Effects, Potential Causes and Current Detection of Failure Mode Effect Analysis ( FMEA ) and give an example follow the form below ?

Item:

Function:

Reference:

Responsible:

Vacuum cleaner Model #321

Remove dirt effectively

FMEA

Enter Name

Process Step

Failure Mode (Local)

Failure Effects (System)

SEV

Potential Causes

OCC

Present Controls

DET

RPN

Correction (Action)

Vacuum floor

low vacuum

dirt-removal is slow and inefficient

7

dirt-bag is full

7

open vacuum cleaner and check if bag is full

9

441

add "Bag-Full" indicator (blinking LED) to advise user to change the bag

Vacuum floor

low vacuum

dirt-removal is slow and inefficient

7

customer used vacuum cleaner to removed spilled water

6

none

10

420

add warning in operation manual

Vacuum floor

loss of vacuum, motor runs

loss of vacuum, motor overheats, motor burns out = total failure

9

large item (cloth) gets into the vacuum hose and blocks the air flow

5

none, detected only by change of sound (motor works harder)

8

360

add mesh in front of the vacuum inlet to prevent larger items to be sucked into the hose

Vacuum floor

loss of vacuum, motor does not run

total loss of function, requires repair

9

motor overheated, burned-out by extensive non-stop use over several hours

2

none, detected only by smell of overheated motor

9

162

add thermal-fuse to prevent the motor from overheating/failure

Replace dirt bag

dirt spills out

floor dirty, needs to be vacuumed again

2

bag fits too tight = needs strong force to be removed = uncontrolled, dirt spills out

7

none

8

112

redesign fitting, include a bag-release clamp