2-1

A vessel temperature is controlled around a set point of 200 C. If temperatures are more than 5 C from set point, product is discolored and must be recycled. What is the most appropriate measure of control performance for this loop?

2-2

A blending process makes C by mixing A and B. C is required to contain at least 20% of A, the more expensive component. The present control system has a composition range of 4% and makes no off-specification material. A new system will have a range of 2%. Without any changes in operating practice, how much process improvement will be realized using the new system?

2-3

What change in operating practice to the process described in Example 2-2 will generate a process improvement using the new system?

2-4

In Example 2-3, what would the cash flows be for Scenario A? For Scenario B? Assume that if the sample system is not working properly, no revenues are generated.

2-5

In Example 2-3, what would the payback be for Scenario A? For Scenario B?

2-6

In Example 2-2, if Project X's first cost, could be reduced to $75,000, which projects would be funded?

2-7

If the scenarios in Example 2-3 were combined, what would the cash flow look like?

2-1

The most appropriate measure is percentage within limits, between 195 and 205 C. This measure has a direct impact on process performance.

2-2

Use of the new control system, without operating changes, will improve neither the production nor the...