In most inventory systems, it is assumed that stock items can be stored indefinitely to meet
future demands. However, the effects of perishability cannot be ignored for certain types
of inventories, which may become partially or entirely unsuitable for consumption as time
passes. Typical examples are fresh produce, blood cells, chemicals, photographic films, drugs
and other pharmaceuticals. In this work, we investigate a perishable inventory management
system with a constant market demand rate in a production environment with a minimum
inventory volume (Imin) requirement that must be kept at all times.