The system is not designed to consider all than one life-cycle stages. A different definition of life-cycle costing is used here. The system does not consider all potentially hidden, contingent, or external costs associated with different material alternatives. Alternatively, they may be able to estimate the percentage impacts, for instance, of liability or waste management costs on the operating costs. The program allows costs to be broken down only to a certain extent, which may force users to lump certain cost categories together.
Users have to set up a single value for downtime periods for maintenance and repair.
They can take into account the residual or scrap value of material after replacement. This is the actual discount rate that is used for the PV calculations. Costs should be entered as per-unit values, which are later multiplied by the number of units to obtain overall costs. The inflation rate is always assumed to be less than the cost of capital. The program discounts all cash flows to get PVs, which can then be used as a basis for comparison.