AAOM Handbook

MS.16 Update Activity Actual Frequency and Duration

Context

The Operating Master Schedule (OMS) provides a roadmap of the work activities appropriate to delivery of the business expectations, and the distribution of the duration for each activity. The OMS is the approved specification of the Right Work, Right Time and Right Way As with any map an OMS can only be used effectively if we are able to accurately identify and track our current position against the expected position and desired end point. To achieve this we need an appropriate level of forecast detail and must provide regular, timely and accurate feedback of actual versus expected progress at this same level of detail. A usable rolling forecast will be made up of the; • actual frequency and duration of the events linked to each OMS Activity, for each reporting interval, to date, plus • projected distributions of frequency and duration for the remainder of the OMS time horizon. For low sample rate Activities the actual values recorded in the OMS for a reporting interval will represent the outcomes for a single event. For high sample rate Activities the actual values recorded in the OMS for a reporting interval will represent the total count and the average duration for multiple events. The timing/frequency of the events linked to each Activity should be extracted from the appropriate systems of record and recorded in the OMS to match the reporting interval (typically monthly).

Purpose

To track actual results against the OMS forecast.

Quantity

The following information should be imported to the OMS.

For each low sample rate Service Activity in the OMS; • The occurrence of an event linked to the Activity in the measurement period, and • The duration of the event. For each high sample rate Service Activity in the OMS; • The total number of occurrences of events linked to the Activity in the measurement period, and • The average duration of the events.

For each high sample Production Activity in the OMS; • The total output for the measurement period,

© McAlear Management Consultants 2006

Operational Planning: Set Operating Master Schedule

Updated: August 2018

Page 45