Update PM drop percentage by Latest Finish
Explanation
This Activity is used to regulate the urgency in scheduling the PM Action.
It is achieved by adjusting the PM
drop (%) defined
on the Maintenance
Planning and Scheduling Dataset.
The default PM drop percentage is 0.5%. PM drop (%) value will be overridden
by Event drop (%) if the PM Action calendar plan line is based
on an Event Period.
Prerequisites
- Schedule PM Action must be enabled in the Maintenance Planning and Scheduling Dataset.
System Effects
When the PM drop (%) is high it gives a high incentive to schedule PM Actions as soon as possible (to be able to be scheduled as soon as possible, having a relatively high base value is important. Otherwise PM Actions may get unscheduled). Since PM Actions are preventive pre-planned work, general recommended to use a lower PM drop (%) value.
ex:
Below graphs illustrates how base value drops within 10 days for the same PM Action when two different PM drop (%) are applied.
Earliest Start : 1 - December
Latest Finish : 10 - December
PM drop 0.5%
When the PM drop (%) is low, the value drop is minimal with time. Hence PSO has the capability to push work to a later day and allow other important work to use early time slots.
PM drop 30%
When the PM drop percentage is high, the value drops rapidly with time. Hence PSO has to schedule it in earliest possible time slot to preserve the value.