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	Word Report Template Data Source Functions Function Wizard Functions

Expected Failures

Description: Returns the expected number of failures for the specified period of time for one unit. If the data source contains failure times for non-repairable systems, the result is accurate when the start time is close to 0 and the end time is less than the MTTF value. If the data source contains the times to the first failure of a repairable system, the result is valid for any start and end time values.

Field Format: [EFAILURES(Source Number)(Start Time; End Time)]

• Source Number is the associated data source number.

• Start Time and End Time are the start age and additional operating time duration, respectively, of the period for which the number of failures are calculated.

Remarks:

• The Start Time and End Time values must be greater than 0.

Example:

• [EFAILURES(1)(500,200)]

Returns:

• 0.2920

Note that this value will vary depending on the source data set.