Challenge
The RET is the main public transport operator of Rotterdam. The maintenance department is responsible for carrying out preventive and corrective maintenance activities for trams, subways and buses. Spare parts are kept in stock in order to carry out the maintenance jobs. The logistics department suffers from (predominantly) expensive parts that have become obsolete. Keeping these parts on stock is costly, hence the desire arises to dispose these parts. Depreciating the value of spares is only allowed to a limited extent, which means that disposing the parts involves taking the unforeseen costs. When postponing the disposal decision, the costs will further increase due to the ongoing holding costs.
