Hi,
In my experience, we always manage Spare Parts as stock materials. The planning is done with reorder point and the we consider variable price.
These materials are received into the inventory in different ways, these are the most frequent options:
- against a purchase orders. The Reorder point and MRP will generate replenishment orders that will be converted into Purchase Orders.
- against a maintenance order, that will generate a requisition which will be converted into a purchase orders. In this case, the maintenance order works as a collector.
The consumption can also be made in different ways. These are the most commons:
- consume against a cost center
- consume against a maintenance order
Hope this helps,
Kind Regards,
Mariano