Lot-sizing decision method for deteriorating items in MRP system

Abstrcat The problem of deterioration items is rarely considered in existing MRP(Material Requierment Planning)ordering methods. Thus, based on the paper (published in Computer Industrial Engineering, 36, 219—225, 1999) by Wee, this paper proposes a programming model in which varying deterioration rate and initial inventory levels are involved according to MRP characteristics. Then a corresponding heuristic algorithm is given. At the end of this paper, two numerical examples are provided to demonstrate the effectiveness of the proposed model.