Page 189 - Design for Six Sigma for Service (Six SIGMA Operational Methods)

Value Engineering 161

Open Depress
valve level
Release
fuel
Contain Enclose Apply
fuel fuel force
Ignite Produce Ignite
cigarette flame fuel

Produce Energize Strike Rub
spark particles flint material
Figure 7.14 Primary Path of FAST Diagram for Cigarette Lighter

This analysis clearly defines the task for product improvement. It breaks the
problem down into functions that must be improved, revised, or eliminated
to achieve the goal. The FAST diagram clearly identifies functions and their
relationship to each other. Cost visibility analysis can identify high-cost
areas. We now are ready to identify the relationship between cost and
function. Specifically, we are ready to identify the cost for each function.
Also, after clearly defining each function, we are able to identify the best
cost for each function. The difference between current cost and the best cost
is the profit improvement target. This provides us with an estimate of profit
improvement potential. Table 7.11 provides an example of cost-function
work sheet based on Example 7.3.

How Why

Manage Control Restrict
flame flow exit Open Depress
valve level
Protect Release
flame fuel
Contain Enclose Apply Activate Stimulate
Ignite Produce Ignite fuel fuel force thumb muscle
cigarette flame fuel
Accommodate
Produce Energize Strike Rub hand
spark particles flint material
When
Rotate
wheel
Scope

Figure 7.15 FAST Diagram for Cigarette Lighter