SCSC2003 Abstract S01921
An application of a finite MRP procedure based on simulation
An application of a finite MRP procedure based on simulation
Submitting Author: Dr. Tommaso Rossi
Abstract:
The limits of material requirements planning (MRP) may be described as
impossibility of operating with finite production capacity and as the
need to receive in input a constant value of lead-time. The approaches
developed so far may cope just with the first one of those lacks by
having into account capacity constraints out of the procedure.
The paper presents the application of a new MRP method, suitable to
manage the production capacity and independent from fixed lead-times, to
a site of an international pharmaceutical company. The proposed
procedure, through a simplified simulation model of the production
system, allows to obtain a plan, which complies with resources capacity
and which does not need to receive estimated lead-time values as input.
In particular, the simulation is based on a model that expresses the
technological cycles as sequences of resources to be used and precession
rules, for each different article produced. Each resource has a finite
capacity and can process a list of items. The model simulates the
production process, identifying infeasibilities and sequencing
production orders according to user defined rules and is able to
considers the orders in progress, updates the availability and the net
requirements of products and adjusts the quantity to produce.
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