Types of Reliability Growth Analysis

Before you can perform a Reliability Growth Analysis, you must collect data, or numeric values representing some variable's performance, over some period of time. All data that you collect will be:

Based on events (e.g., a failure).

-or-
Not based on an event, i.e. based on the consequence of an event (e.g., repair cost).

Both data that is event-based and not event-based will also be:

Grouped (i.e., datapoints represent multiple measurements or an amount).

or-
Non-grouped (i.e., datapoints represent a single measurement).

By default, the GE Digital APM system assumes that your data is not grouped. You can specify that your analysis includes grouped data by including the amount of data per datapoint on the Select Data Fields screen. Data that is not event-based typically measures an amount (e.g., repair cost) and is grouped data.

Event-based data can be derived from:

Failure Dates: Specific dates on which failures occurred. (e.g., 1/3/2012)
Cumulative Operating Time: An amount of time that has passed since the piece of equipment was put into service (e.g., 10 days).

Data that is not event-based is usually derived from cumulative operating time.