AAOM Handbook

• the Equipment/Workplace type (e.g. pumps, valves, ore pass, drains), and • the work type (production or service) • the strategy type (e.g. preventive, predictive, predicted repair, breakdown repair, etc.) and • the type of trigger parameter (tonnes, kilometres, calendar hours, operating hours) that best predicts the occurrence of the work. Many activities within the Operating Master Schedule will relate to individual Equipment or Workplaces. However there are some instances where activities can only be built into the Schedule at a higher level of the Business Structure. These will include some predictive and preventive Service Work that is incorporated into work packages that span across Equipment or Workplaces (e.g. vibration monitoring for rolling element bearings may include all electric motors in a Productive Unit or a Process), and some work packages arising from apparently random events (e.g. extreme weather events and those based on an operate to failure (OTF) service strategy) where it is improbable that an event will occur within a Business Structure element in a reporting interval. In the latter case, reliable predictions can only be made for similarly characterised events over a larger sample population. For example, if the average life of electric motors in a process is 5 years, and the service strategy for these is OTF, it is not possible to predict the failure of an individual motor in a reporting interval with an acceptable degree of confidence. However, it is possible to predict that within a population of 10 motors in the process 2 failures are likely in any reporting interval, with a best case of perhaps 1 and a worst case of 3. Similarly, while it may not be possible to predict that an extreme weather event will affect an individual operation within a business, it may be possible to predict that such an event is probable in at least one of a group of geographically distributed operations. The set of Activities that meet the above criteria, extracted from the Production and Service Work packages will allow the construction of a practical and meaningful Operating Master Schedule.

Purpose

To identify the Activities that will be used to construct the Operating Master Schedule.

Quantity

• One Operating Master Schedule Activity for each of the few Production and Service Work packages that have the highest total estimated impact on performance and costs. • One Operating Master Schedule Activity for each grouping of Production and Service Work packages that summarises the numerous low impact work packages. • One Operating Master Schedule Activity for each significant random event that will impact on process output and/or costs.

© McAlear Management Consultants 2006

Operational Planning: Set Operating Master Schedule

Updated: August 2018

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