The paper presents a method designed to get an improvement of the system performance in a case study, a large company that produces materials for writing. The method arises from a literature survey and from the particular characteristics of the case study. The method argues that the improvement on MRP performance is attained by system nervousness reduction which is supported by two main factors: i) system parameters must be determined in a precise way; ii) integrated production planning and scheduling focused on development of a realistic Master Production Schedule (MPS), which takes account the system capacity. The method was applied and the results were: reduction of system nervousness, reduction of inventory costs, improvement of service level, increase of the workers satisfaction and increase the reliance on the MRP system.
MRP system; system nervousness reduction; performance improvement; case study
