Ramin Sadeghian - Assistant Professor in Department of Industrial Engineering, Engineering Department , Bu Ali Sina University, Hamedan, Iran.

The Materials Requirements Planning (MRP) method that is applied in production planning and management has some weaknesses. One of its waknesses is that the time in MRP method is discrete, and is considered as time period. Hence we are not able to arder our requirements at irregular time moments or periods. In this paper , a new form of MRP is nitroduced that is named Continuous Materials Requirements Planning (CMRP) approach. We discuss the disadvantages of Discrete MRP (DMRP) approach and analyze the coditions, applications and the manner of applying CMRP approah in our problems.

Discrete Materials Requirements Planning (DMRP), Continuous Materials Requirements Planning (CMRP), Order Type (OT), Lot for Lot (L4L)