Use of network planning methods in designing modernization of agri-food processing enterprise to improve organization of production : example of meat processing plant
2018
Francik, S., University of Agriculture in Krakow (Poland) | Pedryc, N., University of Agriculture in Krakow (Poland) | Hebda, T., University of Agriculture in Krakow (Poland) | Brzychczyk, B., University of Agriculture in Krakow (Poland)
Project management is an integral part of any investment process. Any project management process consists of three main components: planning, scheduling and controlling. Scheduling is a frequent task in the manufacturing processes. There are various methods for scheduling, of which the most popular are the Program Evaluation and Review Technique (PERT), and Critical Path Method (CPM) – developed in 1956–1958. PERT and CPM are basically time-oriented methods in the sense that they both lead to the determination of a time schedule. The most important difference between them is that originally the time estimates for the activities were assumed deterministic in CPM and probabilistic in PERT. In this paper the PERT-COST method was used to design the modernization of production processes in a meat processing plant. The PERT-COST method adds the consideration of costs to the schedule developed by the PERT procedure. The main objective in the time-cost trade-off problems has always been the reduction in the total cost. Reducing the original project duration (“crashing PERT networks”) is aimed at meeting a desired deadline while incurring the lowest cost. The research method used in the work included the typical PERT procedure (identification of specific activities and milestones, determination of the proper sequence of actions, development of a network diagram, estimation of the time of each activity, determining the critical path) and cost analysis (PERT-COST) to determine how to reduce the time schedule, while minimizing the increase in the total costs. In this paper the PERT-COST method was used to design the modernization of production processes in a meat processing plant. The production processes were analysed: sausages, pork meats, smoked meats and block products. Then, for each of the production processes, network diagrams were developed and a time-cost analysis was carried out. An optimal plan to shorten the duration of individual production processes was developed.
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