In most multi-item inventory systems, the ordering costs consist of a major cost and a minor cost for each item included. Applying for every individual item a cyclic inventory policy, where the cycle length is a multiple of some basic cycle time, reduces the major ordering costs. An efficient...

In this paper we verify the conditions under which the marginal cost approch of Berg holds. As observed by Aven and dekker the validity of the marginal cost approch gives rise to useful framework of single component maintenance optimization models which covers almost all models used in practice