AAOM Handbook

MS.03 Set Up Scheduling Model Elements

Context

Each of the Work Packages derived from the selection of Production and Service Strategies is necessary to deliver the performance targets for a process, but the target performance cannot be achieved unless all of these Work Packages are executed at the right time and in the right way. The trigger parameters defined for each work package specify how the right time for the execution of each Work Package is determined. Some of the most common trigger events are; • a specified date, • a calendar time interval (e.g. days or weeks), • an operating parameter (e.g. utilisation or operating rate), • a condition parameter (e.g. a wear, contamination level), or • completion of another Work Package (e.g. when replacement of a worn component triggers an overhaul of the replaced item). TA MS.02, Specify Activities for Scheduling Model, defined the set of Activities (based in the Production and Service Strategy work) that will determine both how the process will operate, and what performance it is likely to deliver. A Scheduling Model must be able to take the information on these Activities, combine it with the Operating Parameters from the Production Strategy, and produce reliable forecasts of the frequency and timing of the Production and Service Work Packages that will be generated for a process. The Scheduling Model must also be able to take operating parameter and resourcing data and apply it to the Work Package forecasts to produce reliable forecasts for process output and resource demands. A basic principle of the Operating Model is that Service Work cannot be displaced by Production work, since by definition Service work is risk management. Service work can be adjusted in the schedule, to minimise its impact on Production work, but not displaced. Hence, in instances where a Service Work Package in the schedule would prevent or constrain Production work (by requiring downtime or a lowered operating rate, quality or efficiency) the Scheduling Model must apply this constraint to the scheduling of the Production work and to the modelling of the process output. Hence, to build and run the Scheduling Model, the Activities, their trigger parameters, a forecast of process operating parameters (utilisation, availability, operating rate, quality rate, efficiency), the key labour and equipment (Resource Types), and the dependencies and interactions between Work Packages must be entered into an appropriate model.

Purpose

To set up the Operating Master Schedule Activities within the Scheduling Model.

© McAlear Management Consultants 2006

Operational Planning: Set Operating Master Schedule

Updated: August 2018

Page 13