EPEI Calculator

Formula

To calculate the External Production Equipment Efficiency Index (EPEI):

\[ \text{EPEI} = \frac{\text{CTP}}{\text{ACT}} \]

Where:

\(\text{CTP}\) is the sum of all changeover times across every member of the product family
\(\text{ACT}\) is the time available for changeovers

What is EPEI?

The External Production Equipment Efficiency Index (EPEI) is a metric used to assess the efficiency of equipment changeovers in a production environment. It helps in understanding how effectively the available time for changeovers is utilized relative to the total changeover time required. A lower EPEI value indicates better efficiency.

Example Calculation 1

Let's assume the following values:

Sum of Changeover Times (CTP) = 120 minutes
Time Available for Changeovers (ACT) = 300 minutes

Using the formula:

\[ \text{EPEI} = \frac{120}{300} = 0.40 \]

External Production Equipment Efficiency Index (EPEI): 0.40

Example Calculation 2

Let's assume the following values:

Sum of Changeover Times (CTP) = 150 minutes
Time Available for Changeovers (ACT) = 450 minutes

Using the formula:

\[ \text{EPEI} = \frac{150}{450} = 0.33 \]

External Production Equipment Efficiency Index (EPEI): 0.33