AAOM Handbook

WA.17 Is Work Scheduling System Generated Work > Approval Threshold Context A Work Scheduling Systems (WSS) can be used to automatically create Work Orders for any work that recurs based on a measurable trigger parameter. WSS generated Work Orders are triggered from the measured values of parameters such as time, operating hours, volume transferred, or occurrence of an event such as another work activity etc. The WSS scheduled Work Orders are established based on approved Production and Service strategies and should reflect the implementation of the Operating Master Schedule. The Operating Master Schedule (OMS), and its regular revisions, are assessed for their ability to deliver the stable process performance at the confidence levels required for the process Performance Targets. The OMS specifically identifies those Activities that can have a high impact on the stability of the process performance around its target, and groups the bulk of the production and service work into other Activity populations for statistical modelling. The OMS and its regular revisions must be approved by the appropriate manager, and hence, after the content of the WSS is updated to reflect the approved Operating Master Schedule we can say that Work Orders generated by the WSS are also approved in principle. The majority of the WSS generated work packages will have work scope and timing that is well defined and regulated by the approved Production and Service strategies. However, where work packages have significant potential for variation between the OMS assumptions and their actual scope and timing when due, their approval should be considered when they become due. Based on the circumstances at that time, the scope and timing that is necessary, appropriate and funded may be revised. If a Work Order that is forecast by the WSS has the potential to impact performance stability, that is greater than the threshold agreed by the responsible manager, that Work Order must be reviewed and approved before further commitment of resources. Purpose To approve high impact WSS generated work packages before they are committed to the schedule. Quantity All WSS scheduled work that is above a defined impact threshold processed through the Work Approval Process immediately they appear on the forecast.