AAOM Handbook

In order to understand these critical issues we need an understanding of the distribution of Work Centre Resource Type demand over time.

Once the Work Centre Resource Types are defined, and an estimate for the quantities of each per Activity made, a projection of the OMS/EPS Work Centre demand over time can be created. The forecast can be displayed in both a control chart and histogram of the demand for specified intervals over time. Where rapid changes in demand for a resource occur, we can determine from the OMS/EPS the Activity(s) that create the demand, and hence the predictability and likely urgency of that demand.

Purpose

To determine the nature of the demand for each Work Centre Resource Type.

Quantity

• One control chart of the demand for each Work Centre Resource Type. • One histogram of the demand for each Work Centre Resource Type.

Quality

A control chart should be produced for each Work Centre Resource Type in the OMS/EPS.

The control chart should indicate the total Work Centre Resource Type demand for at least two budget (typically 12 month) periods.

The control chart sample interval should be no larger than the Schedule Period for the execution schedule in which the Resource is used. That is if the schedule period is 1 day then the control chart needs to show at least the daily values of total demand. If the schedule period is 1 week then the control chart needs to show at least the weekly values of total demand.

A histogram shall be produced for each Work Centre Resource Type in the OMS/EPS.

The histogram should indicate the distribution of the forecast total demand for each Work Centre Resource Type for each stable period of the resource demand control chart.

The histogram data quantisation (bin size) should as a guide be around 5% of the maximum value of the Resource Type demand control chart.

Time

At each forecast update interval (typically quarterly).

Resources

Completion of this task is the accountability of the role nominated on the configured Expenditure Schedule flowchart.

© McAlear Management Consultants 2006

Operational Planning: Set Expenditure Schedule

Updated: August 2018

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